1 /* 2 * This file is part of the internal font implementation. 3 * 4 * Copyright (C) 2006, 2008 Apple Inc. All rights reserved. 5 * Copyright (C) 2007-2008 Torch Mobile, Inc. 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 SimpleFontData_h 25 #define SimpleFontData_h 26 27 #include "FontData.h" 28 #include "FontPlatformData.h" 29 #include "GlyphPageTreeNode.h" 30 #include "GlyphWidthMap.h" 31 #include "TypesettingFeatures.h" 32 #include <wtf/OwnPtr.h> 33 34 #if USE(ATSUI) 35 typedef struct OpaqueATSUStyle* ATSUStyle; 36 #endif 37 38 #if (PLATFORM(WIN) && !OS(WINCE)) \ 39 || (OS(WINDOWS) && PLATFORM(WX)) 40 #include <usp10.h> 41 #endif 42 43 #if PLATFORM(CAIRO) 44 #include <cairo.h> 45 #endif 46 47 #if PLATFORM(QT) 48 #include <QFont> 49 #endif 50 51 #if PLATFORM(HAIKU) 52 #include <Font.h> 53 #endif 54 55 namespace WebCore { 56 57 class FontDescription; 58 class FontPlatformData; 59 class SharedBuffer; 60 class SVGFontData; 61 class WidthMap; 62 63 enum Pitch { UnknownPitch, FixedPitch, VariablePitch }; 64 65 class SimpleFontData : public FontData { 66 public: 67 SimpleFontData(const FontPlatformData&, bool customFont = false, bool loading = false, SVGFontData* data = 0); 68 virtual ~SimpleFontData(); 69 70 public: 71 const FontPlatformData& platformData() const { return m_platformData; } 72 SimpleFontData* smallCapsFontData(const FontDescription& fontDescription) const; 73 74 // vertical metrics 75 int ascent() const { return m_ascent; } 76 int descent() const { return m_descent; } 77 int lineSpacing() const { return m_lineSpacing; } 78 int lineGap() const { return m_lineGap; } 79 float maxCharWidth() const { return m_maxCharWidth; } 80 float avgCharWidth() const { return m_avgCharWidth; } 81 float xHeight() const { return m_xHeight; } 82 unsigned unitsPerEm() const { return m_unitsPerEm; } 83 84 float widthForGlyph(Glyph) const; 85 float platformWidthForGlyph(Glyph) const; 86 87 float spaceWidth() const { return m_spaceWidth; } 88 float adjustedSpaceWidth() const { return m_adjustedSpaceWidth; } 89 90 #if PLATFORM(CG) || PLATFORM(CAIRO) || (OS(WINDOWS) && PLATFORM(WX)) 91 float syntheticBoldOffset() const { return m_syntheticBoldOffset; } 92 #endif 93 94 Glyph spaceGlyph() const { return m_spaceGlyph; } 95 96 virtual const SimpleFontData* fontDataForCharacter(UChar32) const; 97 virtual bool containsCharacters(const UChar*, int length) const; 98 99 void determinePitch(); 100 Pitch pitch() const { return m_treatAsFixedPitch ? FixedPitch : VariablePitch; } 101 102 #if ENABLE(SVG_FONTS) 103 SVGFontData* svgFontData() const { return m_svgFontData.get(); } 104 bool isSVGFont() const { return m_svgFontData; } 105 #else 106 bool isSVGFont() const { return false; } 107 #endif 108 109 virtual bool isCustomFont() const { return m_isCustomFont; } 110 virtual bool isLoading() const { return m_isLoading; } 111 virtual bool isSegmented() const; 112 113 const GlyphData& missingGlyphData() const { return m_missingGlyphData; } 114 115 #ifndef NDEBUG 116 virtual String description() const; 117 #endif 118 119 #if PLATFORM(MAC) || (PLATFORM(CHROMIUM) && OS(DARWIN)) 120 NSFont* getNSFont() const { return m_platformData.font(); } 121 #endif 122 123 #if USE(CORE_TEXT) 124 CTFontRef getCTFont() const; 125 CFDictionaryRef getCFStringAttributes(TypesettingFeatures) const; 126 #endif 127 128 #if USE(ATSUI) 129 void checkShapesArabic() const; 130 bool shapesArabic() const 131 { 132 if (!m_checkedShapesArabic) 133 checkShapesArabic(); 134 return m_shapesArabic; 135 } 136 #endif 137 138 #if PLATFORM(QT) 139 QFont getQtFont() const { return m_platformData.font(); } 140 #endif 141 142 #if PLATFORM(WIN) || (OS(WINDOWS) && PLATFORM(WX)) 143 bool isSystemFont() const { return m_isSystemFont; } 144 #if !OS(WINCE) // disable unused members to save space 145 SCRIPT_FONTPROPERTIES* scriptFontProperties() const; 146 SCRIPT_CACHE* scriptCache() const { return &m_scriptCache; } 147 #endif 148 static void setShouldApplyMacAscentHack(bool); 149 static bool shouldApplyMacAscentHack(); 150 #endif 151 152 #if PLATFORM(WX) 153 wxFont* getWxFont() const { return m_platformData.font(); } 154 #endif 155 156 private: 157 void platformInit(); 158 void platformGlyphInit(); 159 void platformCharWidthInit(); 160 void platformDestroy(); 161 162 void initCharWidths(); 163 164 void commonInit(); 165 166 #if (PLATFORM(WIN) && !OS(WINCE)) \ 167 || (OS(WINDOWS) && PLATFORM(WX)) 168 void initGDIFont(); 169 void platformCommonDestroy(); 170 float widthForGDIGlyph(Glyph glyph) const; 171 #endif 172 173 int m_ascent; 174 int m_descent; 175 int m_lineSpacing; 176 int m_lineGap; 177 float m_maxCharWidth; 178 float m_avgCharWidth; 179 float m_xHeight; 180 unsigned m_unitsPerEm; 181 182 FontPlatformData m_platformData; 183 184 mutable GlyphWidthMap m_glyphToWidthMap; 185 186 bool m_treatAsFixedPitch; 187 188 #if ENABLE(SVG_FONTS) 189 OwnPtr<SVGFontData> m_svgFontData; 190 #endif 191 192 bool m_isCustomFont; // Whether or not we are custom font loaded via @font-face 193 bool m_isLoading; // Whether or not this custom font is still in the act of loading. 194 195 Glyph m_spaceGlyph; 196 float m_spaceWidth; 197 float m_adjustedSpaceWidth; 198 199 GlyphData m_missingGlyphData; 200 201 mutable SimpleFontData* m_smallCapsFontData; 202 203 #if PLATFORM(CG) || PLATFORM(CAIRO) || (OS(WINDOWS) && PLATFORM(WX)) 204 float m_syntheticBoldOffset; 205 #endif 206 207 #ifdef BUILDING_ON_TIGER 208 public: 209 void* m_styleGroup; 210 211 private: 212 #endif 213 214 #if USE(ATSUI) 215 public: 216 mutable HashMap<unsigned, ATSUStyle> m_ATSUStyleMap; 217 mutable bool m_ATSUMirrors; 218 mutable bool m_checkedShapesArabic; 219 mutable bool m_shapesArabic; 220 221 private: 222 #endif 223 224 #if USE(CORE_TEXT) 225 mutable RetainPtr<CTFontRef> m_CTFont; 226 mutable HashMap<unsigned, RetainPtr<CFDictionaryRef> > m_CFStringAttributes; 227 #endif 228 229 #if PLATFORM(WIN) || (OS(WINDOWS) && PLATFORM(WX)) 230 bool m_isSystemFont; 231 #if !OS(WINCE) // disable unused members to save space 232 mutable SCRIPT_CACHE m_scriptCache; 233 mutable SCRIPT_FONTPROPERTIES* m_scriptFontProperties; 234 #endif 235 #endif 236 }; 237 238 239 #if !PLATFORM(QT) 240 ALWAYS_INLINE float SimpleFontData::widthForGlyph(Glyph glyph) const 241 { 242 float width = m_glyphToWidthMap.widthForGlyph(glyph); 243 if (width != cGlyphWidthUnknown) 244 return width; 245 246 width = platformWidthForGlyph(glyph); 247 m_glyphToWidthMap.setWidthForGlyph(glyph, width); 248 249 return width; 250 } 251 #endif 252 253 } // namespace WebCore 254 255 #endif // SimpleFontData_h 256
