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Fonts: GetFontBaked() default to searching for closest size font.

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ocornut 2025-03-03 16:14:41 +01:00
parent e98a314e06
commit 161e222322
2 changed files with 43 additions and 11 deletions
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53
imgui_draw.cpp
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@ -3716,6 +3716,30 @@ ImFontBaked* ImFontAtlasBuildAddFontBaked(ImFontAtlas* atlas, ImFont* font, floa
return baked;
}
// FIXME-OPT: This is not a fast query. Adding a BakedCount field in Font might allow to take a shortcut for the most common case.
ImFontBaked* ImFontAtlasBuildGetClosestFontBakedMatch(ImFontAtlas* atlas, ImFont* font, float font_size)
{
ImFontAtlasBuilder* builder = atlas->Builder;
ImFontBaked* closest_larger_match = NULL;
ImFontBaked* closest_smaller_match = NULL;
for (int baked_n = 0; baked_n < builder->BakedPool.Size; baked_n++)
{
ImFontBaked* baked = &builder->BakedPool[baked_n];
if (baked->ContainerFont != font || baked->WantDestroy)
continue;
if (baked->Size > font_size && (closest_larger_match == NULL || baked->Size < closest_larger_match->Size))
closest_larger_match = baked;
if (baked->Size < font_size && (closest_smaller_match == NULL || baked->Size > closest_smaller_match->Size))
closest_smaller_match = baked;
}
if (closest_larger_match)
if (closest_smaller_match == NULL || (closest_larger_match->Size >= font_size * 2.0f && closest_smaller_match->Size > font_size * 0.5f))
return closest_larger_match;
if (closest_smaller_match)
return closest_smaller_match;
return NULL;
}
void ImFontAtlasBuildDiscardFontBaked(ImFontAtlas* atlas, ImFont* font, ImFontBaked* baked)
{
ImFontAtlasBuilder* builder = atlas->Builder;
@ -4976,9 +5000,9 @@ void ImFontAtlasBakedSetFontGlyphBitmap(ImFontAtlas* atlas, ImFontBaked* baked,
ImFontAtlasTextureBlockQueueUpload(atlas, tex, r->x, r->y, r->w, r->h);
}
// FIXME-NEWATLAS: Implement AddRemapChar() which was removed since transitioning to baked logic.
void ImFont::AddRemapChar(ImWchar from_codepoint, ImWchar to_codepoint, bool overwrite_dst)
{
// FIXME-BAKED: Implement AddRemapChar()
IM_UNUSED(from_codepoint);
IM_UNUSED(to_codepoint);
IM_UNUSED(overwrite_dst);
@ -5092,8 +5116,8 @@ ImFontBaked* ImFont::GetFontBaked(float size)
ImFontAtlas* atlas = ContainerAtlas;
ImFontAtlasBuilder* builder = atlas->Builder;
// FIXME-BAKED: Design for picking a nearest size?
// FIXME-BAKED: Altering font density won't work right away.
// FIXME-NEWATLAS: Design for picking a nearest size based on some criterias?
// FIXME-NEWATLAS: Altering font density won't work right away.
ImGuiID baked_id = ImFontAtlasBakedGetId(FontId, size);
ImFontBaked** p_baked_in_map = (ImFontBaked**)builder->BakedMap.GetVoidPtrRef(baked_id);
baked = *p_baked_in_map;
@ -5105,17 +5129,24 @@ ImFontBaked* ImFont::GetFontBaked(float size)
return baked;
}
// FIXME-BAKED: If loading is locked, find closest match
if (Flags & ImFontFlags_LockBakedSizes)
// If atlas is locked, find closest match
// FIXME-OPT: This is not an optimal query.
if ((Flags & ImFontFlags_LockBakedSizes) || atlas->Locked)
{
IM_ASSERT(LastBaked);
return LastBaked;
baked = ImFontAtlasBuildGetClosestFontBakedMatch(atlas, this, size);
if (baked != NULL)
{
baked->LastUsedFrame = builder->FrameCount;
LastBaked = baked;
return baked;;
}
if (atlas->Locked)
{
IM_ASSERT(!atlas->Locked && "Cannot use dynamic font size with a locked ImFontAtlas!"); // Locked because rendering backend does not support ImGuiBackendFlags_RendererHasTextures!
return NULL;
}
}
// FIXME-BAKED: If atlas is locked, find closest match
if (atlas->Locked)
IM_ASSERT(!atlas->Locked && "Cannot use dynamic font size with a locked ImFontAtlas!"); // Locked because rendering backend does not support ImGuiBackendFlags_RendererHasTextures!
// Create new
baked = ImFontAtlasBuildAddFontBaked(atlas, this, size, baked_id);
LastBaked = baked;

1
imgui_internal.h
View file

@ -3779,6 +3779,7 @@ IMGUI_API void ImFontAtlasBuildSetupFontSpecialGlyphs(ImFontAtlas*
IMGUI_API void ImFontAtlasBuildDiscardBakes(ImFontAtlas* atlas, int unused_frames);
IMGUI_API void ImFontAtlasBuildDiscardFont(ImFontAtlas* atlas, ImFont* font);
IMGUI_API ImFontBaked* ImFontAtlasBuildAddFontBaked(ImFontAtlas* atlas, ImFont* font, float font_size, ImGuiID baked_id);
IMGUI_API ImFontBaked* ImFontAtlasBuildGetClosestFontBakedMatch(ImFontAtlas* atlas, ImFont* font, float font_size);
IMGUI_API void ImFontAtlasBuildDiscardFontBaked(ImFontAtlas* atlas, ImFont* font, ImFontBaked* baked);
IMGUI_API void ImFontAtlasBuildDiscardFontBakedGlyph(ImFontAtlas* atlas, ImFont* font, ImFontBaked* baked, ImFontGlyph* glyph);
IMGUI_API void ImFontAtlasBuildPreloadAllGlyphRanges(ImFontAtlas* atlas); // Legacy