Merge branch 'master' into context

Moved extra_fonts/ to misc/fonts/. Moved .natvis file to misc/natvis/ (#1569)

Style: Enable window border by default. (#707)

Metrics: Minor formatting tweaks

Internals: Renaming.

Scrollbar: Fix for ScrollbarY enable check after ScrollbarX has been enabled. (#1574) Looks like a bug introduced in c36e586.

Scrollbar: Fix ScrollbarX enable test subtracting WindowPadding.x. This has been here since 65a191c (#246) tho at the time it is possible that SizeContents wasn't calculated as evenly. ...

Test: auto-resize with: ImGui::Begin("Test", NULL, ImGuiWindowFlags_HorizontalScrollbar); ImGui::Button("##xxx", ImVec2(500,500)); ImGui::End();

Fixed potential warning (forward declaration and definition didn't match signature. forward declaration only here for consistency)

Fix SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Broken in eab6333. (#1363)

Merge branch 'master' into context

Fixed old Begin() calling SetNextWindowBgAlpha() with negative values. (#1567, #1568)

Clear BgAlphaCond properly after consuming it. Fixes 9a76fd3 (#1567)

Comments (#1567)

Added SetNextWindowBgAlpha() helper. (#1567) particularly helpul with the marking of the old 5-parameters version of Begin() as obsolete.

Internals: Exposed SetCurrentFont() in imgui_internal.h

Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)

Internals: Moved unnecessary MovingWindowMoveId field.

Tweaked FAQ.

Context: NewFrame() asserts (#1565)

Reorganized context handling to be more explicit, ...

- YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
- removed Shutdown() function, as DestroyContext() serve this purpose.
- you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwhise CreateContext() will create its own font atlas instance.
- removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
- removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts
(#1565, #586, #992, #1007, #1558)

Context: Renamed SetMemoryAllocators() to SetAllocatorFunctions(). Tweaked comments. (#1565, #586, #992, #1007, #1558)

Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)

Context: Removed allocator parameters from CreateContext(), they are now setup with SetMemoryAllocators() and shared by all contexts. (#1565, #586, #992, #1007, #1558)

Comments

Simplified return of ImGui::IsKeyReleased()

ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple context. Also remove the last remaining undesirable dependency on GImGui in imgui_draw.cpp, finishing the work recently done with ImDrawListSharedData. Hurra! (#939)

Horizontal mouse wheel: renamed io.MouseHorizWheel to io.MouseWheelH. Reorganized the code in NewFrame(). Examples: Updated GLFW+GL and SDL+GL accordingly. (#1463)

Merge branch 'tseeker/20171127-feature-horiz-wheel' of https://github.com/tseeker/imgui into tseeker-tseeker/20171127-feature-horiz-wheel ...

# Conflicts:
#	examples/sdl_opengl2_example/imgui_impl_sdl_gl2.cpp
#	examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp

Renaming for consistency.

Basic undocumented/unsupported combination of Child+Tooltip. The full feature needs substancially more work but this is enough for simplest cases. (#1345)