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:
platformData()71 const FontPlatformData& platformData() const { return m_platformData; }
72 SimpleFontData* smallCapsFontData(const FontDescription& fontDescription) const;
73
74 // vertical metrics
ascent()75 int ascent() const { return m_ascent; }
descent()76 int descent() const { return m_descent; }
lineSpacing()77 int lineSpacing() const { return m_lineSpacing; }
lineGap()78 int lineGap() const { return m_lineGap; }
maxCharWidth()79 float maxCharWidth() const { return m_maxCharWidth; }
avgCharWidth()80 float avgCharWidth() const { return m_avgCharWidth; }
xHeight()81 float xHeight() const { return m_xHeight; }
unitsPerEm()82 unsigned unitsPerEm() const { return m_unitsPerEm; }
83
84 float widthForGlyph(Glyph) const;
85 float platformWidthForGlyph(Glyph) const;
86
spaceWidth()87 float spaceWidth() const { return m_spaceWidth; }
adjustedSpaceWidth()88 float adjustedSpaceWidth() const { return m_adjustedSpaceWidth; }
89
90 #if PLATFORM(CG) || PLATFORM(CAIRO) || (OS(WINDOWS) && PLATFORM(WX))
syntheticBoldOffset()91 float syntheticBoldOffset() const { return m_syntheticBoldOffset; }
92 #endif
93
spaceGlyph()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();
pitch()100 Pitch pitch() const { return m_treatAsFixedPitch ? FixedPitch : VariablePitch; }
101
102 #if ENABLE(SVG_FONTS)
svgFontData()103 SVGFontData* svgFontData() const { return m_svgFontData.get(); }
isSVGFont()104 bool isSVGFont() const { return m_svgFontData; }
105 #else
isSVGFont()106 bool isSVGFont() const { return false; }
107 #endif
108
isCustomFont()109 virtual bool isCustomFont() const { return m_isCustomFont; }
isLoading()110 virtual bool isLoading() const { return m_isLoading; }
111 virtual bool isSegmented() const;
112
missingGlyphData()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))
getNSFont()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;
shapesArabic()130 bool shapesArabic() const
131 {
132 if (!m_checkedShapesArabic)
133 checkShapesArabic();
134 return m_shapesArabic;
135 }
136 #endif
137
138 #if PLATFORM(QT)
getQtFont()139 QFont getQtFont() const { return m_platformData.font(); }
140 #endif
141
142 #if PLATFORM(WIN) || (OS(WINDOWS) && PLATFORM(WX))
isSystemFont()143 bool isSystemFont() const { return m_isSystemFont; }
144 #if !OS(WINCE) // disable unused members to save space
145 SCRIPT_FONTPROPERTIES* scriptFontProperties() const;
scriptCache()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)
getWxFont()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)
widthForGlyph(Glyph glyph)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