- Removed explicit PCH.
- Fixed includes to compile for all supported engine versions, including non-unity builds.
- Configured build.cs to treat ImGui as an engine module and added stricter compilation rules.
- The old DPI Scale setting was replaced by DPI Scaling Info, which contains information about scale and method of scaling.
- ImGui Context Manager handles scaling in ImGui by scaling all styles, rebuilding fonts using a different size, and raising OnFontAtlasBuilt event.
- ImGui Module Manager uses OnFontAtlasBuilt event to rebuild font textures.
- The update policy in Texture Manager was loosened to update existing resources rather than throwing an exception. This is less strict but it is now more useful since our main texture can now change. The throwing behavior used in the public interface is now handled before calling to the Texture Manager.
- Canvas size can be set to custom width and height, desktop size or viewport size.
- The old Adaptive Canvas Size is replaced by the viewport size type.
- Custom and desktop size types can be also extended to the viewport size but they will never be smaller than their base sizes.
Merged 4 commits fixing build errors when compiling this as an engine plugin:
- Changed include directives to use full paths (ex. <ICursor.h> -> <GenericPlatform/ICursor.h>).
- Added categories to FImGuiKeyInfo properties (required for all blueprint exposed types in engine plugins).
- Added explicit configuration of PCHUsage (without that it is assumed to be UseExplicitOrSharedPCHs in engine plugins and UseSharedPCHs in game ones) - amended to work also in the older engine versions.
- With the mouse sharing enabled, SImGuiWidget can update mouse position without enabling hit-tests. Actual input mode depends whether mouse cursor is hovering any ImGui window or not.
- Added to context proxy interface to read whether that context has mouse hovering any window.
- Added boilerplate code to support mouse sharing settings, properties and commands.
