Version 1.52

Begin: Fix for unused "Debug" (fix for 3b83cd2 )

Begin: Moved some code inside of the big if (first_begin_of_the_frame) scope

NewFrame: Allow MovedWindow setting the ImGuiWindowFlags_NoInputs after moving has started in order to be able to detect windows below it, which is useful for e.g. docking mechanisms.

NewFrame: Removed unnecessary call to FindHoveredWindow() and simplified code (went through this multiple times, hopefully haven't broken anything)

Internal: BeginTooltipEx() in imgui_internal.h

Merged a bit of code from Navigation branch to ease further merging (InnerRect is currently not required in the Master branch)

Minor renaming.

Comments about mouse setup and clearing HoveredWindow when mouse down isn't owned by imgui (will affect some future hovered test and drag'n drop patterns) (#143, #1382, #1392)

Added most basic form of Disabled flag to disable interactions (but visuals aren't altered), in imgui_internals.h, undocumented/unsupported (#211, #1012)

Removed direct dependency on sprintf() in imgui.cpp (#1038) ...

(NB: imgui_demo stills uses it)

ImFormatString, ImFormatStringV(): clarifying specs so that passing a NULL buffer should return the desired length. (#1038)

Renamed IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS/IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS to IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS/IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS for consistency. (ref #238, #520, #738)

Added IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS support in imconfig.h (#1038)

Add missing CloseClipboard call

Fixed typos

ColorButton: As a small convenience, provide a text baseline.

ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.

Fixed calling SetNextTreeNodeOpen() on a collapsed window leaking to next frame.

Factorized some code (+ declared as static function without namespace, a pattern with the Nav branch has started to use)

MenuItem(): Tweaks to mimic exact spacing of BeginMenu() when inside a menu bar, which is a little misleading imho but may be useful. (#1387)

MenuItem(): Tweak to not draw over all horizontal space when in horizontal layout mode. (#1387)

Comments

Popups: Fixed right-click to close popups not handling modal windows properly. (~#439)

Popups: similarly to previous commit, we fix reopening a popup within a popup stack from truncating the whole stack. This is done by properly refocusing the lower level popup. (~#439)

Popups: fixed CloseInactivePopups() so that right-clicking to close one level of popups in a popups stack won't close the whole stack. This is done by properly refocusing the lower level popup. Fixes 87ae408 (~#439)

Added OpenPopupOnItemClick(); helper which mimic BeginPopupContextItem() but doesn't do the open. ...

Made the color popups uses this standard function so they handle reopening a context menu.

BeginPopupContextItem(), BeginPopupContextWindow(): Using newly introduced IsItemHovered() flags to allow reopening another context menu (over same or not same item) with right-click. (#439) (+1 squashed commits)

IsWindowHovered(): Changed default behavior to now return false is a widget from another window is active + Added support for ImGuiHoveredFlags_AllowWhenBlockedByActiveItem. (relate to drag'n drop idoms: #143)

IsItemHovered(), IsWindowHovered(): added flags to enable various and more specific behavior. Will enable improvements for popups/context menus and drag'n drop. (relate ~#439, #1013, #143, #925) ...

The legacy confusing IsItemRectHovered(), IsWindowRectHovered() can be completely removed now.
Changed IsWindowHovered() behavior with default parameter: it now return false is the window is blocked by a popup.
Demo: Added tests for those two functions.