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Fix #10161: Ignore ascender in FallbackLayouter for non-built-in fonts. (#10169)

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PeterN 2022-11-13 17:10:34 +00:00 committed by GitHub
parent 89a2d0a605
commit cea62ef73d
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1 changed files with 9 additions and 2 deletions
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11
src/gfx_layout.cpp
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@ -333,18 +333,25 @@ public:
FallbackParagraphLayout::FallbackVisualRun::FallbackVisualRun(Font *font, const WChar *chars, int char_count, int x) :
font(font), glyph_count(char_count)
{
const bool isbuiltin = font->fc->IsBuiltInFont();
this->glyphs = MallocT<GlyphID>(this->glyph_count);
this->glyph_to_char = MallocT<int>(this->glyph_count);
/* Positions contains the location of the begin of each of the glyphs, and the end of the last one. */
this->positions = MallocT<float>(this->glyph_count * 2 + 2);
this->positions[0] = x;
this->positions[1] = font->fc->GetAscender();
for (int i = 0; i < this->glyph_count; i++) {
this->glyphs[i] = font->fc->MapCharToGlyph(chars[i]);
if (isbuiltin) {
this->positions[2 * i + 1] = font->fc->GetAscender(); // Apply sprite font's ascender.
} else if (chars[i] >= SCC_SPRITE_START && chars[i] <= SCC_SPRITE_END) {
this->positions[2 * i + 1] = font->fc->GetAscender() - font->fc->GetGlyph(this->glyphs[i])->height - 1; // Align sprite glyphs to font baseline.
} else {
this->positions[2 * i + 1] = 0; // No ascender adjustment.
}
this->positions[2 * i + 2] = this->positions[2 * i] + font->fc->GetGlyphWidth(this->glyphs[i]);
this->positions[2 * i + 3] = font->fc->GetAscender();
this->glyph_to_char[i] = i;
}
}