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i18n: simplify RebuildFonts() — remove glyph ranges and ref size workaround

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In v1.92+ with an updated backend, glyph ranges are handled dynamically
and do not need to be specified. Remove GetGlyphRangesChineseSimplifiedCommon(),
the zh_label_ranges English stub, and the explicit SizePixels on AddFontDefault()
that was added to work around the ImplicitRefSize assertion. Use plain
MergeMode instead.
This commit is contained in:
xuk 2026-06-10 16:59:39 +08:00
parent e8fdf812b2
commit e9cd46672a
1 changed files with 5 additions and 14 deletions
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19
examples/example_apple_metal/main.mm
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@ -51,15 +51,10 @@ static void RebuildFonts()
{
ImGuiIO& io = ImGui::GetIO();
io.Fonts->ClearFonts();
// v1.92: must pass explicit SizePixels so base font is not marked ImplicitRefSize,
// otherwise MergeMode on the CJK font triggers an assertion.
ImFontConfig default_cfg;
default_cfg.SizePixels = 13.0f;
io.Fonts->AddFontDefault(&default_cfg);
io.Fonts->AddFontDefault();
// Merge CJK font:
// zh_CN → full common range (~2500 glyphs, renders all translated text)
// English → only "中文" (2 glyphs U+4E2D,U+6587) so Language menu label renders correctly
// Merge a CJK font so the Language menu and translated strings render correctly.
// In v1.92+ with an updated backend, glyph ranges are handled dynamically and do not need to be specified.
// Hiragino Sans GB is designed for Simplified Chinese; fall back to STHeiti.
const char* font_paths[] = {
"/System/Library/Fonts/Hiragino Sans GB.ttc",
@ -71,13 +66,9 @@ static void RebuildFonts()
if (access(font_paths[i], R_OK) == 0) { chosen = font_paths[i]; break; }
}
if (chosen) {
static const ImWchar zh_label_ranges[] = { 0x4E2D, 0x4E2D, 0x6587, 0x6587, 0 };
bool is_zh = (strcmp(imgui_i18n::getLocale(), "zh_CN") == 0);
ImFontConfig cfg;
cfg.MergeMode = true;
cfg.PixelSnapH = true;
io.Fonts->AddFontFromFileTTF(chosen, 13.0f, &cfg,
is_zh ? io.Fonts->GetGlyphRangesChineseSimplifiedCommon() : zh_label_ranges);
cfg.MergeMode = true;
io.Fonts->AddFontFromFileTTF(chosen, 13.0f, &cfg);
}
io.Fonts->Build();
}