1 /* 2 * This file is part of the internal font implementation. 3 * It should not be included by source files outside of it. 4 * 5 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24 #ifndef FontPlatformData_h 25 #define FontPlatformData_h 26 27 #include "StringImpl.h" 28 29 #ifdef __OBJC__ 30 @class NSFont; 31 #else 32 class NSFont; 33 #endif 34 35 typedef struct CGFont* CGFontRef; 36 #ifndef BUILDING_ON_TIGER 37 typedef const struct __CTFont* CTFontRef; 38 #endif 39 40 #include <CoreFoundation/CFBase.h> 41 #include <objc/objc-auto.h> 42 #include <wtf/RetainPtr.h> 43 44 typedef UInt32 ATSUFontID; 45 46 namespace WebCore { 47 48 class String; 49 50 #ifndef BUILDING_ON_TIGER 51 inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); } 52 #endif 53 54 struct FontPlatformData { 55 FontPlatformData(float size, bool syntheticBold, bool syntheticOblique) 56 : m_syntheticBold(syntheticBold) 57 , m_syntheticOblique(syntheticOblique) 58 , m_atsuFontID(0) 59 , m_size(size) 60 , m_font(0) 61 #ifdef BUILDING_ON_TIGER 62 , m_cgFont(0) 63 #endif 64 { 65 } 66 67 FontPlatformData(NSFont *nsFont, bool syntheticBold = false, bool syntheticOblique = false); 68 69 FontPlatformData(CGFontRef cgFont, ATSUFontID fontID, float size, bool syntheticBold, bool syntheticOblique) 70 : m_syntheticBold(syntheticBold) 71 , m_syntheticOblique(syntheticOblique) 72 , m_atsuFontID(fontID) 73 , m_size(size) 74 , m_font(0) 75 , m_cgFont(cgFont) 76 { 77 } 78 79 FontPlatformData(const FontPlatformData&); 80 81 ~FontPlatformData(); 82 83 FontPlatformData(WTF::HashTableDeletedValueType) : m_font(hashTableDeletedFontValue()) { } 84 bool isHashTableDeletedValue() const { return m_font == hashTableDeletedFontValue(); } 85 86 float size() const { return m_size; } 87 bool syntheticBold() const { return m_syntheticBold; } 88 bool syntheticOblique() const { return m_syntheticOblique; } 89 90 bool m_syntheticBold; 91 bool m_syntheticOblique; 92 93 ATSUFontID m_atsuFontID; 94 float m_size; 95 96 unsigned hash() const 97 { 98 ASSERT(m_font != 0 || m_cgFont == 0); 99 uintptr_t hashCodes[2] = { (uintptr_t)m_font, m_syntheticBold << 1 | m_syntheticOblique }; 100 return StringImpl::computeHash(reinterpret_cast<UChar*>(hashCodes), sizeof(hashCodes) / sizeof(UChar)); 101 } 102 103 const FontPlatformData& operator=(const FontPlatformData& f); 104 105 bool operator==(const FontPlatformData& other) const 106 { 107 return m_font == other.m_font && m_syntheticBold == other.m_syntheticBold && m_syntheticOblique == other.m_syntheticOblique && 108 m_cgFont == other.m_cgFont && m_size == other.m_size && m_atsuFontID == other.m_atsuFontID; 109 } 110 111 NSFont *font() const { return m_font; } 112 void setFont(NSFont *font); 113 114 bool roundsGlyphAdvances() const; 115 bool allowsLigatures() const; 116 117 #ifndef BUILDING_ON_TIGER 118 CGFontRef cgFont() const { return m_cgFont.get(); } 119 #else 120 CGFontRef cgFont() const { return m_cgFont; } 121 #endif 122 123 #ifndef NDEBUG 124 String description() const; 125 #endif 126 127 private: 128 static NSFont *hashTableDeletedFontValue() { return reinterpret_cast<NSFont *>(-1); } 129 130 NSFont *m_font; 131 #ifndef BUILDING_ON_TIGER 132 RetainPtr<CGFontRef> m_cgFont; 133 #else 134 CGFontRef m_cgFont; // It is not necessary to refcount this, since either an NSFont owns it or some CachedFont has it referenced. 135 #endif 136 }; 137 138 } 139 140 #endif 141