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Fonts: AddFont() functions now allow size_pixels==0.0f (only required when using certain functions)

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Fonts: AddFont() funcitons allow size_pixels==0 for merged fonts.
This commit is contained in:
ocornut
2025-06-06 16:33:02 +02:00
parent bc394410a2
commit 02f58b3207
3 changed files with 12 additions and 7 deletions
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8
imgui.h
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@@ -3577,10 +3577,10 @@ struct ImFontAtlas
IMGUI_API ~ImFontAtlas();
IMGUI_API ImFont* AddFont(const ImFontConfig* font_cfg);
IMGUI_API ImFont* AddFontDefault(const ImFontConfig* font_cfg = NULL);
IMGUI_API ImFont* AddFontFromFileTTF(const char* filename, float size_pixels, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL);
IMGUI_API ImFont* AddFontFromMemoryTTF(void* font_data, int font_data_size, float size_pixels, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL); // Note: Transfer ownership of 'ttf_data' to ImFontAtlas! Will be deleted after destruction of the atlas. Set font_cfg->FontDataOwnedByAtlas=false to keep ownership of your data and it won't be freed.
IMGUI_API ImFont* AddFontFromMemoryCompressedTTF(const void* compressed_font_data, int compressed_font_data_size, float size_pixels, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL); // 'compressed_font_data' still owned by caller. Compress with binary_to_compressed_c.cpp.
IMGUI_API ImFont* AddFontFromMemoryCompressedBase85TTF(const char* compressed_font_data_base85, float size_pixels, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL); // 'compressed_font_data_base85' still owned by caller. Compress with binary_to_compressed_c.cpp with -base85 parameter.
IMGUI_API ImFont* AddFontFromFileTTF(const char* filename, float size_pixels = 0.0f, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL);
IMGUI_API ImFont* AddFontFromMemoryTTF(void* font_data, int font_data_size, float size_pixels = 0.0f, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL); // Note: Transfer ownership of 'ttf_data' to ImFontAtlas! Will be deleted after destruction of the atlas. Set font_cfg->FontDataOwnedByAtlas=false to keep ownership of your data and it won't be freed.
IMGUI_API ImFont* AddFontFromMemoryCompressedTTF(const void* compressed_font_data, int compressed_font_data_size, float size_pixels = 0.0f, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL); // 'compressed_font_data' still owned by caller. Compress with binary_to_compressed_c.cpp.
IMGUI_API ImFont* AddFontFromMemoryCompressedBase85TTF(const char* compressed_font_data_base85, float size_pixels = 0.0f, const ImFontConfig* font_cfg = NULL, const ImWchar* glyph_ranges = NULL); // 'compressed_font_data_base85' still owned by caller. Compress with binary_to_compressed_c.cpp with -base85 parameter.
IMGUI_API void RemoveFont(ImFont* font);
IMGUI_API void Clear(); // Clear everything (input fonts, output glyphs/textures)

5
imgui_draw.cpp
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@@ -4533,11 +4533,14 @@ static bool ImGui_ImplStbTrueType_FontSrcInit(ImFontAtlas* atlas, ImFontConfig*
}
src->FontLoaderData = bd_font_data;
if (src->MergeMode && src->SizePixels == 0.0f)
src->SizePixels = src->DstFont->Sources[0]->SizePixels;
if (src->SizePixels >= 0.0f)
bd_font_data->ScaleFactor = stbtt_ScaleForPixelHeight(&bd_font_data->FontInfo, 1.0f);
else
bd_font_data->ScaleFactor = stbtt_ScaleForMappingEmToPixels(&bd_font_data->FontInfo, 1.0f);
if (src != src->DstFont->Sources[0])
if (src->MergeMode && src->SizePixels != 0.0f)
bd_font_data->ScaleFactor *= src->SizePixels / src->DstFont->Sources[0]->SizePixels; // FIXME-NEWATLAS: Should tidy up that a bit
return true;

6
misc/freetype/imgui_freetype.cpp
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@@ -421,7 +421,9 @@ void ImGui_ImplFreeType_FontSrcDestroy(ImFontAtlas* atlas, ImFontConfig* src)
bool ImGui_ImplFreeType_FontBakedInit(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src)
{
IM_UNUSED(atlas);
const float size = baked->Size * (src->SizePixels / baked->ContainerFont->Sources[0]->SizePixels); // FIXME-NEWATLAS: Should tidy up that a bit
float size = baked->Size;
if (src->MergeMode && src->SizePixels != 0.0f)
size *= (src->SizePixels / baked->ContainerFont->Sources[0]->SizePixels);
ImGui_ImplFreeType_FontSrcData* bd_font_data = (ImGui_ImplFreeType_FontSrcData*)src->FontLoaderData;
bd_font_data->BakedLastActivated = baked;
@@ -637,7 +639,7 @@ static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state)
#else
state->svg->setMatrix(state->svg->matrix().identity()); // Reset the svg matrix to the default value
state->svg->render(bitmap, state->matrix); // state->matrix is already scaled and translated
#endif
#endif
state->err = FT_Err_Ok;
return state->err;
}