FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer)
{
ASSERT_ARG(buffer, buffer);
#if ENABLE(OPENTYPE_SANITIZER)
OpenTypeSanitizer sanitizer(buffer);
RefPtr<SharedBuffer> transcodeBuffer = sanitizer.sanitize();
if (!transcodeBuffer)
return 0; // validation failed.
buffer = transcodeBuffer.get();
#endif
#if OS(WINDOWS)
// Introduce the font to GDI. AddFontMemResourceEx should be used with care, because it will pollute the process's
// font namespace (Windows has no API for creating an HFONT from data without exposing the font to the
// entire process first).
String fontName = createUniqueFontName();
HANDLE fontReference = renameAndActivateFont(buffer, fontName);
if (!fontReference)
return 0;
return new FontCustomPlatformData(fontReference, fontName);
#elif OS(UNIX) || PLATFORM(BREWMP)
RemoteFontStream* stream = new RemoteFontStream(buffer);
SkTypeface* typeface = SkTypeface::CreateFromStream(stream);
stream->unref();
if (!typeface)
return 0;
return new FontCustomPlatformData(typeface);
#else
notImplemented();
return 0;
#endif
}
FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer)
{
ASSERT_ARG(buffer, buffer);
#if USE(OPENTYPE_SANITIZER)
OpenTypeSanitizer sanitizer(buffer);
RefPtr<SharedBuffer> transcodeBuffer = sanitizer.sanitize();
if (!transcodeBuffer)
return 0; // validation failed.
buffer = transcodeBuffer.get();
#else
RefPtr<SharedBuffer> sfntBuffer;
if (isWOFF(buffer)) {
Vector<char> sfnt;
if (!convertWOFFToSfnt(buffer, sfnt))
return 0;
sfntBuffer = SharedBuffer::adoptVector(sfnt);
buffer = sfntBuffer.get();
}
#endif
ATSFontContainerRef containerRef = 0;
RetainPtr<CGFontRef> cgFontRef;
#ifndef BUILDING_ON_LEOPARD
RetainPtr<CFDataRef> bufferData(AdoptCF, buffer->createCFData());
RetainPtr<CGDataProviderRef> dataProvider(AdoptCF, CGDataProviderCreateWithCFData(bufferData.get()));
cgFontRef.adoptCF(CGFontCreateWithDataProvider(dataProvider.get()));
if (!cgFontRef)
return 0;
#else
// Use ATS to activate the font.
// The value "3" means that the font is private and can't be seen by anyone else.
ATSFontActivateFromMemory((void*)buffer->data(), buffer->size(), 3, kATSFontFormatUnspecified, NULL, kATSOptionFlagsDefault, &containerRef);
if (!containerRef)
return 0;
ItemCount fontCount;
ATSFontFindFromContainer(containerRef, kATSOptionFlagsDefault, 0, NULL, &fontCount);
// We just support the first font in the list.
if (fontCount == 0) {
ATSFontDeactivate(containerRef, NULL, kATSOptionFlagsDefault);
return 0;
}
ATSFontRef fontRef = 0;
ATSFontFindFromContainer(containerRef, kATSOptionFlagsDefault, 1, &fontRef, NULL);
if (!fontRef) {
ATSFontDeactivate(containerRef, NULL, kATSOptionFlagsDefault);
return 0;
}
cgFontRef.adoptCF(CGFontCreateWithPlatformFont(&fontRef));
// Workaround for <rdar://problem/5675504>.
if (cgFontRef && !CGFontGetNumberOfGlyphs(cgFontRef.get()))
cgFontRef = 0;
if (!cgFontRef) {
ATSFontDeactivate(containerRef, NULL, kATSOptionFlagsDefault);
return 0;
}
#endif // !defined(BUILDING_ON_LEOPARD)
FontCustomPlatformData* fontCustomPlatformData = new FontCustomPlatformData(containerRef, cgFontRef.releaseRef());
#if USE(SKIA_ON_MAC_CHROMIUM)
RemoteFontStream* stream = new RemoteFontStream(buffer);
fontCustomPlatformData->m_typeface = SkTypeface::CreateFromStream(stream);
stream->unref();
#endif
return fontCustomPlatformData;
}