CGRect subfontbbox(CGFontRef font, int lo, int hi) { int i, first; CGRect bbox; bbox.origin.x = 0; bbox.origin.y = 0; bbox.size.height = 0; bbox.size.width = 0; first = 1; for(i=lo; i<=hi; i++) { UniChar u; CGGlyph g; CGRect r; u = mapUnicode(i); CGFontGetGlyphsForUnichars(font, &u, &g, 1); if(g == 0 || !CGFontGetGlyphBBoxes(font, &g, 1, &r)) continue; r.size.width += r.origin.x; r.size.height += r.origin.y; if(first) { bbox = r; first = 0; continue; } if(bbox.origin.x > r.origin.x) bbox.origin.x = r.origin.x; if(bbox.origin.y > r.origin.y) bbox.origin.y = r.origin.y; if(bbox.size.width < r.size.width) bbox.size.width = r.size.width; if(bbox.size.height < r.size.height) bbox.size.height = r.size.height; } bbox.size.width -= bbox.origin.x; bbox.size.height -= bbox.origin.y; return bbox; }
bool GlyphPage::fill(UChar* buffer, unsigned bufferLength, const Font* fontData) { bool haveGlyphs = false; Vector<CGGlyph, 512> glyphs(bufferLength); if (!shouldUseCoreText(buffer, bufferLength, fontData)) { // We pass in either 256 or 512 UTF-16 characters: 256 for U+FFFF and less, 512 (double character surrogates) // for U+10000 and above. It is indeed possible to get back 512 glyphs back from the API, so the glyph buffer // we pass in must be 512. If we get back more than 256 glyphs though we'll ignore all the ones after 256, // this should not happen as the only time we pass in 512 characters is when they are surrogates. CGFontGetGlyphsForUnichars(fontData->platformData().cgFont(), buffer, glyphs.data(), bufferLength); for (unsigned i = 0; i < GlyphPage::size; ++i) { if (!glyphs[i]) setGlyphDataForIndex(i, 0, 0); else { setGlyphDataForIndex(i, glyphs[i], fontData); haveGlyphs = true; } } } else { // Because we know the implementation of shouldUseCoreText(), if the font isn't for text combine and it isn't a system font, // we know it must have vertical glyphs. if (fontData->platformData().isForTextCombine() || fontData->isSystemFont()) CTFontGetGlyphsForCharacters(fontData->platformData().ctFont(), buffer, glyphs.data(), bufferLength); else CTFontGetVerticalGlyphsForCharacters(fontData->platformData().ctFont(), buffer, glyphs.data(), bufferLength); // When buffer consists of surrogate pairs, CTFontGetVerticalGlyphsForCharacters and CTFontGetGlyphsForCharacters // place the glyphs at indices corresponding to the first character of each pair. ASSERT(bufferLength == GlyphPage::size || bufferLength == 2 * GlyphPage::size); unsigned glyphStep = bufferLength / GlyphPage::size; for (unsigned i = 0; i < GlyphPage::size; ++i) { if (!glyphs[i * glyphStep]) setGlyphDataForIndex(i, 0, 0); else { setGlyphDataForIndex(i, glyphs[i * glyphStep], fontData); haveGlyphs = true; } } } return haveGlyphs; }
void load(XFont *f) { int i, j; CGFontRef font; CFStringRef s; UniChar u[256]; CGGlyph g[256]; CGRect bbox; if(f->loaded) return; f->loaded = 1; s = c2mac(f->name); font = CGFontCreateWithFontName(s); CFRelease(s); if(font == nil) return; // assume bbox gives latin1 is height/ascent for all bbox = subfontbbox(font, 0x00, 0xff); f->unit = CGFontGetUnitsPerEm(font); f->height = bbox.size.height; f->originy = bbox.origin.y; // figure out where the letters are for(i=0; i<0xffff; i+=0x100) { for(j=0; j<0x100; j++) { u[j] = mapUnicode(i+j); g[j] = 0; } CGFontGetGlyphsForUnichars(font, u, g, 256); for(j=0; j<0x100; j++) { if(g[j] != 0) { f->range[i>>8] = 1; f->nrange++; break; } } }
void drawTextWithSpacing(GraphicsContext* graphicsContext, const SimpleFontData* font, const wxColour& color, const GlyphBuffer& glyphBuffer, int from, int numGlyphs, const FloatPoint& point) { graphicsContext->save(); wxGCDC* dc = static_cast<wxGCDC*>(graphicsContext->platformContext()); wxFont* wxfont = font->getWxFont(); graphicsContext->setFillColor(graphicsContext->fillColor(), DeviceColorSpace); CGContextRef cgContext = static_cast<CGContextRef>(dc->GetGraphicsContext()->GetNativeContext()); CGFontRef cgFont; #ifdef wxOSX_USE_CORE_TEXT && wxOSX_USE_CORE_TEXT cgFont = CTFontCopyGraphicsFont((CTFontRef)wxfont->OSXGetCTFont(), NULL); #else ATSFontRef fontRef; fontRef = FMGetATSFontRefFromFont(wxfont->MacGetATSUFontID()); if (fontRef) cgFont = CGFontCreateWithPlatformFont((void*)&fontRef); #endif CGContextSetFont(cgContext, cgFont); CGContextSetFontSize(cgContext, wxfont->GetPointSize()); CGFloat red, green, blue, alpha; graphicsContext->fillColor().getRGBA(red, green, blue, alpha); CGContextSetRGBFillColor(cgContext, red, green, blue, alpha); CGAffineTransform matrix = CGAffineTransformIdentity; matrix.b = -matrix.b; matrix.d = -matrix.d; CGContextSetTextMatrix(cgContext, matrix); CGContextSetTextPosition(cgContext, point.x(), point.y()); const FloatSize* advanceSizes = static_cast<const FloatSize*>(glyphBuffer.advances(from)); int size = glyphBuffer.size() - from; CGSize sizes[size]; CGGlyph glyphs[numGlyphs]; // if the function doesn't exist, we're probably on tiger and need to grab the // function under its old name, CGFontGetGlyphsForUnicodes if (!CGFontGetGlyphsForUnichars) CGFontGetGlyphsForUnichars = (CGFontGetGlyphsForUnicharsPtr)dlsym(RTLD_DEFAULT, "CGFontGetGlyphsForUnicodes"); // Let's make sure we got the function under one name or another! ASSERT(CGFontGetGlyphsForUnichars); CGFontGetGlyphsForUnichars(cgFont, glyphBuffer.glyphs(from), glyphs, numGlyphs); for (int i = 0; i < size; i++) { FloatSize fsize = advanceSizes[i]; sizes[i] = CGSizeMake(fsize.width(), fsize.height()); } CGContextShowGlyphsWithAdvances(cgContext, glyphs, sizes, numGlyphs); if (cgFont) CGFontRelease(cgFont); graphicsContext->restore(); }
bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData) { bool haveGlyphs = false; Vector<CGGlyph, 512> glyphs(bufferLength); if (!shouldUseCoreText(buffer, bufferLength, fontData)) { // We pass in either 256 or 512 UTF-16 characters: 256 for U+FFFF and less, 512 (double character surrogates) // for U+10000 and above. It is indeed possible to get back 512 glyphs back from the API, so the glyph buffer // we pass in must be 512. If we get back more than 256 glyphs though we'll ignore all the ones after 256, // this should not happen as the only time we pass in 512 characters is when they are surrogates. CGFontGetGlyphsForUnichars(fontData->platformData().cgFont(), buffer, glyphs.data(), bufferLength); for (unsigned i = 0; i < length; ++i) { if (!glyphs[i]) setGlyphDataForIndex(offset + i, 0, 0); else { setGlyphDataForIndex(offset + i, glyphs[i], fontData); haveGlyphs = true; } } } else if (!fontData->platformData().isCompositeFontReference() && ((fontData->platformData().widthVariant() == RegularWidth) ? wkGetVerticalGlyphsForCharacters(fontData->platformData().ctFont(), buffer, glyphs.data(), bufferLength) : CTFontGetGlyphsForCharacters(fontData->platformData().ctFont(), buffer, glyphs.data(), bufferLength))) { // When buffer consists of surrogate pairs, wkGetVerticalGlyphsForCharacters and CTFontGetGlyphsForCharacters // place the glyphs at indices corresponding to the first character of each pair. unsigned glyphStep = bufferLength / length; for (unsigned i = 0; i < length; ++i) { if (!glyphs[i * glyphStep]) setGlyphDataForIndex(offset + i, 0, 0); else { setGlyphDataForIndex(offset + i, glyphs[i * glyphStep], fontData); haveGlyphs = true; } } } else { // We ask CoreText for possible vertical variant glyphs RetainPtr<CFStringRef> string = adoptCF(CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, buffer, bufferLength, kCFAllocatorNull)); RetainPtr<CFAttributedStringRef> attributedString = adoptCF(CFAttributedStringCreate(kCFAllocatorDefault, string.get(), fontData->getCFStringAttributes(0, fontData->hasVerticalGlyphs() ? Vertical : Horizontal))); RetainPtr<CTLineRef> line = adoptCF(CTLineCreateWithAttributedString(attributedString.get())); CFArrayRef runArray = CTLineGetGlyphRuns(line.get()); CFIndex runCount = CFArrayGetCount(runArray); // Initialize glyph entries for (unsigned index = 0; index < length; ++index) setGlyphDataForIndex(offset + index, 0, 0); Vector<CGGlyph, 512> glyphVector; Vector<CFIndex, 512> indexVector; bool done = false; // For the CGFont comparison in the loop, use the CGFont that Core Text assigns to the CTFont. This may // be non-CFEqual to fontData->platformData().cgFont(). RetainPtr<CGFontRef> cgFont = adoptCF(CTFontCopyGraphicsFont(fontData->platformData().ctFont(), 0)); for (CFIndex r = 0; r < runCount && !done ; ++r) { // CTLine could map characters over multiple fonts using its own font fallback list. // We need to pick runs that use the exact font we need, i.e., fontData->platformData().ctFont(). CTRunRef ctRun = static_cast<CTRunRef>(CFArrayGetValueAtIndex(runArray, r)); ASSERT(CFGetTypeID(ctRun) == CTRunGetTypeID()); CFDictionaryRef attributes = CTRunGetAttributes(ctRun); CTFontRef runFont = static_cast<CTFontRef>(CFDictionaryGetValue(attributes, kCTFontAttributeName)); RetainPtr<CGFontRef> runCGFont = adoptCF(CTFontCopyGraphicsFont(runFont, 0)); // Use CGFont here as CFEqual for CTFont counts all attributes for font. bool gotBaseFont = CFEqual(cgFont.get(), runCGFont.get()); if (gotBaseFont || fontData->platformData().isCompositeFontReference()) { // This run uses the font we want. Extract glyphs. CFIndex glyphCount = CTRunGetGlyphCount(ctRun); const CGGlyph* glyphs = CTRunGetGlyphsPtr(ctRun); if (!glyphs) { glyphVector.resize(glyphCount); CTRunGetGlyphs(ctRun, CFRangeMake(0, 0), glyphVector.data()); glyphs = glyphVector.data(); } const CFIndex* stringIndices = CTRunGetStringIndicesPtr(ctRun); if (!stringIndices) { indexVector.resize(glyphCount); CTRunGetStringIndices(ctRun, CFRangeMake(0, 0), indexVector.data()); stringIndices = indexVector.data(); } if (gotBaseFont) { for (CFIndex i = 0; i < glyphCount; ++i) { if (stringIndices[i] >= static_cast<CFIndex>(length)) { done = true; break; } if (glyphs[i]) { setGlyphDataForIndex(offset + stringIndices[i], glyphs[i], fontData); haveGlyphs = true; } } #if !PLATFORM(IOS) } else { const SimpleFontData* runSimple = fontData->getCompositeFontReferenceFontData((NSFont *)runFont); if (runSimple) { for (CFIndex i = 0; i < glyphCount; ++i) { if (stringIndices[i] >= static_cast<CFIndex>(length)) { done = true; break; } if (glyphs[i]) { setGlyphDataForIndex(offset + stringIndices[i], glyphs[i], runSimple); haveGlyphs = true; } } } #endif // !PLATFORM(IOS) } } } } return haveGlyphs; }
bool SimpleFontData::fillGlyphPage(GlyphPage* pageToFill, unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength) const { bool haveGlyphs = false; Vector<CGGlyph, 512> glyphs(bufferLength); if (!shouldUseCoreText(buffer, bufferLength, this)) { CGFontGetGlyphsForUnichars(platformData().cgFont(), buffer, glyphs.data(), bufferLength); for (unsigned i = 0; i < length; ++i) { if (glyphs[i]) { pageToFill->setGlyphDataForIndex(offset + i, glyphs[i], this); haveGlyphs = true; } } } else if (!platformData().isCompositeFontReference() && platformData().widthVariant() != RegularWidth && CTFontGetGlyphsForCharacters(platformData().ctFont(), buffer, glyphs.data(), bufferLength)) { // When buffer consists of surrogate pairs, CTFontGetGlyphsForCharacters // places the glyphs at indices corresponding to the first character of each pair. unsigned glyphStep = bufferLength / length; for (unsigned i = 0; i < length; ++i) { if (glyphs[i * glyphStep]) { pageToFill->setGlyphDataForIndex(offset + i, glyphs[i * glyphStep], this); haveGlyphs = true; } } } else { // We ask CoreText for possible vertical variant glyphs RetainPtr<CFStringRef> string(AdoptCF, CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, buffer, bufferLength, kCFAllocatorNull)); RetainPtr<CFAttributedStringRef> attributedString(AdoptCF, CFAttributedStringCreate(kCFAllocatorDefault, string.get(), getCFStringAttributes(0, hasVerticalGlyphs() ? Vertical : Horizontal))); RetainPtr<CTLineRef> line(AdoptCF, CTLineCreateWithAttributedString(attributedString.get())); CFArrayRef runArray = CTLineGetGlyphRuns(line.get()); CFIndex runCount = CFArrayGetCount(runArray); Vector<CGGlyph, 512> glyphVector; Vector<CFIndex, 512> indexVector; bool done = false; // For the CGFont comparison in the loop, use the CGFont that Core Text assigns to the CTFont. This may // be non-CFEqual to platformData().cgFont(). RetainPtr<CGFontRef> cgFont(AdoptCF, CTFontCopyGraphicsFont(platformData().ctFont(), 0)); for (CFIndex r = 0; r < runCount && !done ; ++r) { // CTLine could map characters over multiple fonts using its own font fallback list. // We need to pick runs that use the exact font we need, i.e., platformData().ctFont(). CTRunRef ctRun = static_cast<CTRunRef>(CFArrayGetValueAtIndex(runArray, r)); ASSERT(CFGetTypeID(ctRun) == CTRunGetTypeID()); CFDictionaryRef attributes = CTRunGetAttributes(ctRun); CTFontRef runFont = static_cast<CTFontRef>(CFDictionaryGetValue(attributes, kCTFontAttributeName)); RetainPtr<CGFontRef> runCGFont(AdoptCF, CTFontCopyGraphicsFont(runFont, 0)); // Use CGFont here as CFEqual for CTFont counts all attributes for font. bool gotBaseFont = CFEqual(cgFont.get(), runCGFont.get()); if (gotBaseFont || platformData().isCompositeFontReference()) { // This run uses the font we want. Extract glyphs. CFIndex glyphCount = CTRunGetGlyphCount(ctRun); const CGGlyph* glyphs = CTRunGetGlyphsPtr(ctRun); if (!glyphs) { glyphVector.resize(glyphCount); CTRunGetGlyphs(ctRun, CFRangeMake(0, 0), glyphVector.data()); glyphs = glyphVector.data(); } const CFIndex* stringIndices = CTRunGetStringIndicesPtr(ctRun); if (!stringIndices) { indexVector.resize(glyphCount); CTRunGetStringIndices(ctRun, CFRangeMake(0, 0), indexVector.data()); stringIndices = indexVector.data(); } if (gotBaseFont) { for (CFIndex i = 0; i < glyphCount; ++i) { if (stringIndices[i] >= static_cast<CFIndex>(length)) { done = true; break; } if (glyphs[i]) { pageToFill->setGlyphDataForIndex(offset + stringIndices[i], glyphs[i], this); haveGlyphs = true; } } } else { const SimpleFontData* runSimple = getCompositeFontReferenceFontData((NSFont *)runFont); if (runSimple) { for (CFIndex i = 0; i < glyphCount; ++i) { if (stringIndices[i] >= static_cast<CFIndex>(length)) { done = true; break; } if (glyphs[i]) { pageToFill->setGlyphDataForIndex(offset + stringIndices[i], glyphs[i], runSimple); haveGlyphs = true; } } } } } } } return haveGlyphs; }