static inline float applyFontTransforms(GlyphBuffer* glyphBuffer, bool ltr, int& lastGlyphCount, const SimpleFontData* fontData, WidthIterator& iterator, TypesettingFeatures typesettingFeatures, CharactersTreatedAsSpace& charactersTreatedAsSpace)
{
ASSERT(typesettingFeatures & (Kerning | Ligatures));
if (!glyphBuffer)
return 0;
int glyphBufferSize = glyphBuffer->size();
if (glyphBuffer->size() <= lastGlyphCount + 1)
return 0;
GlyphBufferAdvance* advances = glyphBuffer->advances(0);
float widthDifference = 0;
for (int i = lastGlyphCount; i < glyphBufferSize; ++i)
widthDifference -= advances[i].width();
if (!ltr)
glyphBuffer->reverse(lastGlyphCount, glyphBufferSize - lastGlyphCount);
#if !ENABLE(SVG_FONTS)
UNUSED_PARAM(iterator);
#else
// We need to handle transforms on SVG fonts internally, since they are rendered internally.
if (fontData->isSVGFont()) {
// SVG font ligatures are handled during glyph selection, only kerning remaining.
if (iterator.run().renderingContext() && (typesettingFeatures & Kerning)) {
// FIXME: We could pass the necessary context down to this level so we can lazily create rendering contexts at this point.
// However, a larger refactoring of SVG fonts might necessary to sidestep this problem completely.
iterator.run().renderingContext()->applySVGKerning(fontData, iterator, glyphBuffer, lastGlyphCount);
}
} else
#endif
fontData->applyTransforms(glyphBuffer->glyphs(lastGlyphCount), advances + lastGlyphCount, glyphBufferSize - lastGlyphCount, typesettingFeatures);
if (!ltr)
glyphBuffer->reverse(lastGlyphCount, glyphBufferSize - lastGlyphCount);
for (size_t i = 0; i < charactersTreatedAsSpace.size(); ++i) {
int spaceOffset = charactersTreatedAsSpace[i].first;
const OriginalAdvancesForCharacterTreatedAsSpace& originalAdvances = charactersTreatedAsSpace[i].second;
if (spaceOffset && !originalAdvances.characterIsSpace)
glyphBuffer->advances(spaceOffset - 1)->setWidth(originalAdvances.advanceBeforeCharacter);
glyphBuffer->advances(spaceOffset)->setWidth(originalAdvances.advanceAtCharacter);
}
charactersTreatedAsSpace.clear();
for (int i = lastGlyphCount; i < glyphBufferSize; ++i)
widthDifference += advances[i].width();
lastGlyphCount = glyphBufferSize;
return widthDifference;
}
static inline float applyFontTransforms(GlyphBuffer* glyphBuffer, bool ltr, int& lastGlyphCount, const SimpleFontData* fontData, WidthIterator& iterator, TypesettingFeatures typesettingFeatures, CharactersTreatedAsSpace& charactersTreatedAsSpace)
{
ASSERT(typesettingFeatures & (Kerning | Ligatures));
if (!glyphBuffer)
return 0;
int glyphBufferSize = glyphBuffer->size();
if (glyphBuffer->size() <= lastGlyphCount + 1)
return 0;
GlyphBufferAdvance* advances = glyphBuffer->advances(0);
float widthDifference = 0;
for (int i = lastGlyphCount; i < glyphBufferSize; ++i)
widthDifference -= advances[i].width();
if (!ltr)
glyphBuffer->reverse(lastGlyphCount, glyphBufferSize - lastGlyphCount);
#if ENABLE(SVG_FONTS)
// We need to handle transforms on SVG fonts internally, since they are rendered internally.
if (fontData->isSVGFont()) {
// SVG font fallbacks doesn't work properly and will not have a renderingContext. see: textRunNeedsRenderingContext()
// SVG font ligatures are handled during glyph selection, only kerning remaining.
if (iterator.run().renderingContext() && (typesettingFeatures & Kerning))
iterator.run().renderingContext()->applySVGKerning(fontData, iterator, glyphBuffer, lastGlyphCount);
} else
#endif
fontData->applyTransforms(glyphBuffer->glyphs(lastGlyphCount), advances + lastGlyphCount, glyphBufferSize - lastGlyphCount, typesettingFeatures);
if (!ltr)
glyphBuffer->reverse(lastGlyphCount, glyphBufferSize - lastGlyphCount);
for (size_t i = 0; i < charactersTreatedAsSpace.size(); ++i) {
int spaceOffset = charactersTreatedAsSpace[i].first;
const OriginalAdvancesForCharacterTreatedAsSpace& originalAdvances = charactersTreatedAsSpace[i].second;
if (spaceOffset && !originalAdvances.characterIsSpace)
glyphBuffer->advances(spaceOffset - 1)->setWidth(originalAdvances.advanceBeforeCharacter);
glyphBuffer->advances(spaceOffset)->setWidth(originalAdvances.advanceAtCharacter);
}
charactersTreatedAsSpace.clear();
for (int i = lastGlyphCount; i < glyphBufferSize; ++i)
widthDifference += advances[i].width();
lastGlyphCount = glyphBufferSize;
return widthDifference;
}
static inline float applyFontTransforms(GlyphBuffer* glyphBuffer, bool ltr, int& lastGlyphCount, const SimpleFontData* fontData, TypesettingFeatures typesettingFeatures, CharactersTreatedAsSpace& charactersTreatedAsSpace)
{
ASSERT(typesettingFeatures & (Kerning | Ligatures));
if (!glyphBuffer)
return 0;
int glyphBufferSize = glyphBuffer->size();
if (glyphBuffer->size() <= lastGlyphCount + 1)
return 0;
GlyphBufferAdvance* advances = glyphBuffer->advances(0);
float widthDifference = 0;
for (int i = lastGlyphCount; i < glyphBufferSize; ++i)
widthDifference -= advances[i].width();
if (!ltr)
glyphBuffer->reverse(lastGlyphCount, glyphBufferSize - lastGlyphCount);
fontData->applyTransforms(glyphBuffer->glyphs(lastGlyphCount), advances + lastGlyphCount, glyphBufferSize - lastGlyphCount, typesettingFeatures);
if (!ltr)
glyphBuffer->reverse(lastGlyphCount, glyphBufferSize - lastGlyphCount);
for (size_t i = 0; i < charactersTreatedAsSpace.size(); ++i) {
int spaceOffset = charactersTreatedAsSpace[i].first;
const OriginalAdvancesForCharacterTreatedAsSpace& originalAdvances = charactersTreatedAsSpace[i].second;
if (spaceOffset && !originalAdvances.characterIsSpace)
glyphBuffer->advances(spaceOffset - 1)->setWidth(originalAdvances.advanceBeforeCharacter);
glyphBuffer->advances(spaceOffset)->setWidth(originalAdvances.advanceAtCharacter);
}
charactersTreatedAsSpace.clear();
for (int i = lastGlyphCount; i < glyphBufferSize; ++i)
widthDifference += advances[i].width();
lastGlyphCount = glyphBufferSize;
return widthDifference;
}