1 /* 2 * Copyright (C) 2007, 2008, 2010 Apple Inc. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #include "config.h" 22 #include "FontCustomPlatformData.h" 23 24 #include "FontPlatformData.h" 25 #include "OpenTypeSanitizer.h" 26 #include "SharedBuffer.h" 27 #include "WOFFFileFormat.h" 28 #include <ApplicationServices/ApplicationServices.h> 29 30 namespace WebCore { 31 32 FontCustomPlatformData::~FontCustomPlatformData() 33 { 34 #if defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD) 35 if (m_atsContainer) 36 ATSFontDeactivate(m_atsContainer, NULL, kATSOptionFlagsDefault); 37 #endif 38 CGFontRelease(m_cgFont); 39 } 40 41 FontPlatformData FontCustomPlatformData::fontPlatformData(int size, bool bold, bool italic, FontOrientation orientation, TextOrientation textOrientation, FontWidthVariant widthVariant, FontRenderingMode) 42 { 43 return FontPlatformData(m_cgFont, size, bold, italic, orientation, textOrientation, widthVariant); 44 } 45 46 FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer) 47 { 48 ASSERT_ARG(buffer, buffer); 49 50 #if ENABLE(OPENTYPE_SANITIZER) 51 OpenTypeSanitizer sanitizer(buffer); 52 RefPtr<SharedBuffer> transcodeBuffer = sanitizer.sanitize(); 53 if (!transcodeBuffer) 54 return 0; // validation failed. 55 buffer = transcodeBuffer.get(); 56 #else 57 RefPtr<SharedBuffer> sfntBuffer; 58 if (isWOFF(buffer)) { 59 Vector<char> sfnt; 60 if (!convertWOFFToSfnt(buffer, sfnt)) 61 return 0; 62 63 sfntBuffer = SharedBuffer::adoptVector(sfnt); 64 buffer = sfntBuffer.get(); 65 } 66 #endif 67 68 ATSFontContainerRef containerRef = 0; 69 70 RetainPtr<CGFontRef> cgFontRef; 71 72 #if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD) 73 RetainPtr<CFDataRef> bufferData(AdoptCF, buffer->createCFData()); 74 RetainPtr<CGDataProviderRef> dataProvider(AdoptCF, CGDataProviderCreateWithCFData(bufferData.get())); 75 76 cgFontRef.adoptCF(CGFontCreateWithDataProvider(dataProvider.get())); 77 if (!cgFontRef) 78 return 0; 79 #else 80 // Use ATS to activate the font. 81 82 // The value "3" means that the font is private and can't be seen by anyone else. 83 ATSFontActivateFromMemory((void*)buffer->data(), buffer->size(), 3, kATSFontFormatUnspecified, NULL, kATSOptionFlagsDefault, &containerRef); 84 if (!containerRef) 85 return 0; 86 ItemCount fontCount; 87 ATSFontFindFromContainer(containerRef, kATSOptionFlagsDefault, 0, NULL, &fontCount); 88 89 // We just support the first font in the list. 90 if (fontCount == 0) { 91 ATSFontDeactivate(containerRef, NULL, kATSOptionFlagsDefault); 92 return 0; 93 } 94 95 ATSFontRef fontRef = 0; 96 ATSFontFindFromContainer(containerRef, kATSOptionFlagsDefault, 1, &fontRef, NULL); 97 if (!fontRef) { 98 ATSFontDeactivate(containerRef, NULL, kATSOptionFlagsDefault); 99 return 0; 100 } 101 102 cgFontRef.adoptCF(CGFontCreateWithPlatformFont(&fontRef)); 103 #ifndef BUILDING_ON_TIGER 104 // Workaround for <rdar://problem/5675504>. 105 if (cgFontRef && !CGFontGetNumberOfGlyphs(cgFontRef.get())) 106 cgFontRef = 0; 107 #endif 108 if (!cgFontRef) { 109 ATSFontDeactivate(containerRef, NULL, kATSOptionFlagsDefault); 110 return 0; 111 } 112 #endif // !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD) 113 114 return new FontCustomPlatformData(containerRef, cgFontRef.releaseRef()); 115 } 116 117 bool FontCustomPlatformData::supportsFormat(const String& format) 118 { 119 return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype") || equalIgnoringCase(format, "woff"); 120 } 121 122 } 123