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Fonts: added ImFontAtlas::SetFontLoader() to dynamically change font loader at runtime without using internal API. (#8752, #8465)

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ocornut 2025-06-30 20:01:02 +02:00
parent 8ccfdf7ba0
commit b7e5d76c79
5 changed files with 20 additions and 11 deletions
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imgui.h
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@ -3493,7 +3493,7 @@ struct ImFontConfig
// [Internal]
ImFontFlags Flags; // Font flags (don't use just yet, will be exposed in upcoming 1.92.X updates)
ImFont* DstFont; // Target font (as we merging fonts, multiple ImFontConfig may target the same font)
const ImFontLoader* FontLoader; // Custom font backend for this source (other use one stored in ImFontAtlas)
const ImFontLoader* FontLoader; // Custom font backend for this source (default source is the one stored in ImFontAtlas)
void* FontLoaderData; // Font loader opaque storage (per font config)
IMGUI_API ImFontConfig();
@ -3590,6 +3590,7 @@ struct ImFontAtlas
IMGUI_API void Clear(); // Clear everything (input fonts, output glyphs/textures)
IMGUI_API void CompactCache(); // Compact cached glyphs and texture.
IMGUI_API void SetFontLoader(const ImFontLoader* font_loader); // Change font loader at runtime.
// As we are transitioning toward a new font system, we expect to obsolete those soon:
IMGUI_API void ClearInputData(); // [OBSOLETE] Clear input data (all ImFontConfig structures including sizes, TTF data, glyph ranges, etc.) = all the data used to build the texture and fonts.
@ -3698,7 +3699,7 @@ struct ImFontAtlas
int FontNextUniqueID; // Next value to be stored in ImFont->FontID
ImVector<ImDrawListSharedData*> DrawListSharedDatas; // List of users for this atlas. Typically one per Dear ImGui context.
ImFontAtlasBuilder* Builder; // Opaque interface to our data that doesn't need to be public and may be discarded when rebuilding.
const ImFontLoader* FontLoader; // Font loader opaque interface (default to stb_truetype, can be changed to use FreeType by defining IMGUI_ENABLE_FREETYPE). Don't set directly!
const ImFontLoader* FontLoader; // Font loader opaque interface (default to use FreeType when IMGUI_ENABLE_FREETYPE is defined, otherwise default to use stb_truetype). Use SetFontLoader() to change this at runtime.
const char* FontLoaderName; // Font loader name (for display e.g. in About box) == FontLoader->Name
void* FontLoaderData; // Font backend opaque storage
unsigned int FontLoaderFlags; // Shared flags (for all fonts) for font loader. THIS IS BUILD IMPLEMENTATION DEPENDENT (e.g. Per-font override is also available in ImFontConfig).