GlyphData FontCascadeFonts::glyphDataForNormalVariant(UChar32 c, const FontDescription& description)
{
const unsigned pageNumber = c / GlyphPage::size;
for (unsigned fallbackIndex = 0; true; ++fallbackIndex) {
auto& fontRanges = realizeFallbackRangesAt(description, fallbackIndex);
if (fontRanges.isNull())
break;
auto* font = fontRanges.fontForCharacter(c);
auto* page = font ? font->glyphPage(pageNumber) : nullptr;
if (!page)
continue;
GlyphData data = page->glyphDataForCharacter(c);
if (data.font) {
if (data.font->platformData().orientation() == Vertical && !data.font->isTextOrientationFallback()) {
if (!FontCascade::isCJKIdeographOrSymbol(c))
return glyphDataForNonCJKCharacterWithGlyphOrientation(c, description.nonCJKGlyphOrientation(), data);
if (!data.font->hasVerticalGlyphs()) {
// Use the broken ideograph font data. The broken ideograph font will use the horizontal width of glyphs
// to make sure you get a square (even for broken glyphs like symbols used for punctuation).
return glyphDataForVariant(c, description, BrokenIdeographVariant, fallbackIndex);
}
#if PLATFORM(COCOA)
if (data.font->platformData().syntheticOblique())
return glyphDataForCJKCharacterWithoutSyntheticItalic(c, data);
#endif
}
return data;
}
}
return glyphDataForSystemFallback(c, description, NormalVariant);
}
GlyphData FontCascadeFonts::glyphDataForVariant(UChar32 c, const FontCascadeDescription& description, FontVariant variant, unsigned fallbackIndex)
{
while (true) {
auto& fontRanges = realizeFallbackRangesAt(description, fallbackIndex++);
if (fontRanges.isNull())
break;
GlyphData data = fontRanges.glyphDataForCharacter(c);
if (!data.font)
continue;
// The variantFont function should not normally return 0.
// But if it does, we will just render the capital letter big.
if (const Font* variantFont = data.font->variantFont(description, variant))
return variantFont->glyphDataForCharacter(c);
return data;
}
return glyphDataForSystemFallback(c, description, variant);
}
