1 /*
2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc.
3 * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
4 * Copyright (C) 2007 Holger Hans Peter Freyther
5 * Copyright (C) 2007 Pioneer Research Center USA, Inc.
6 * Copyright (C) 2010, 2011 Brent Fulgham <bfulgham@webkit.org>
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25 // FIXME: This is temporary until all ports switch to using this file.
26 #if OS(WIN)
27 #include "platform/fonts/win/FontPlatformDataWin.h"
28 #elif !OS(MACOSX)
29 #include "platform/fonts/harfbuzz/FontPlatformDataHarfBuzz.h"
30
31 #else
32
33 #ifndef FontPlatformData_h
34 #define FontPlatformData_h
35
36 #include "platform/PlatformExport.h"
37 #include "platform/fonts/FontOrientation.h"
38 #include "platform/fonts/FontWidthVariant.h"
39
40 #if OS(MACOSX)
41 OBJC_CLASS NSFont;
42
43 typedef struct CGFont* CGFontRef;
44 typedef const struct __CTFont* CTFontRef;
45
46 #include <CoreFoundation/CFBase.h>
47 #include <objc/objc-auto.h>
48 #endif
49
50 #include "wtf/Forward.h"
51 #include "wtf/HashTableDeletedValueType.h"
52 #include "wtf/PassRefPtr.h"
53 #include "wtf/RefCounted.h"
54 #include "wtf/RetainPtr.h"
55 #include "wtf/text/StringImpl.h"
56
57 #if OS(MACOSX)
58 #include "platform/fonts/mac/MemoryActivatedFont.h"
59 #endif
60
61 #if OS(MACOSX)
62 typedef struct CGFont* CGFontRef;
63 typedef const struct __CTFont* CTFontRef;
64 typedef UInt32 FMFont;
65 typedef FMFont ATSUFontID;
66 typedef UInt32 ATSFontRef;
67 #endif
68
69 namespace WebCore {
70
71 class FontDescription;
72 class SharedBuffer;
73
74 #if OS(MACOSX)
75 class HarfBuzzFace;
76 #endif
77
78 #if OS(MACOSX)
toCTFontRef(NSFont * nsFont)79 inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); }
80 #endif
81
82 class PLATFORM_EXPORT FontPlatformData {
83 public:
84 FontPlatformData(WTF::HashTableDeletedValueType);
85 FontPlatformData();
86 FontPlatformData(const FontPlatformData&);
87 FontPlatformData(const FontDescription&, const AtomicString& family);
88 FontPlatformData(float size, bool syntheticBold, bool syntheticOblique, FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
89
90 #if OS(MACOSX)
91 FontPlatformData(NSFont*, float size, bool isPrinterFont = false, bool syntheticBold = false, bool syntheticOblique = false,
92 FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
93 FontPlatformData(CGFontRef, float size, bool syntheticBold, bool syntheticOblique, FontOrientation, FontWidthVariant);
94 #endif
95
96 ~FontPlatformData();
97
98 #if OS(MACOSX)
font()99 NSFont* font() const { return m_font; }
100 void setFont(NSFont*);
101 #endif
102
103 #if OS(MACOSX)
cgFont()104 CGFontRef cgFont() const { return m_cgFont.get(); }
105 CTFontRef ctFont() const;
106
107 bool roundsGlyphAdvances() const;
108 bool allowsLigatures() const;
109 #endif
110
111 String fontFamilyName() const;
112 bool isFixedPitch() const;
size()113 float size() const { return m_size; }
setSize(float size)114 void setSize(float size) { m_size = size; }
syntheticBold()115 bool syntheticBold() const { return m_syntheticBold; }
syntheticOblique()116 bool syntheticOblique() const { return m_syntheticOblique; }
isColorBitmapFont()117 bool isColorBitmapFont() const { return m_isColorBitmapFont; }
isCompositeFontReference()118 bool isCompositeFontReference() const { return m_isCompositeFontReference; }
119 #if OS(MACOSX)
isPrinterFont()120 bool isPrinterFont() const { return m_isPrinterFont; }
121 #endif
orientation()122 FontOrientation orientation() const { return m_orientation; }
widthVariant()123 FontWidthVariant widthVariant() const { return m_widthVariant; }
124
setOrientation(FontOrientation orientation)125 void setOrientation(FontOrientation orientation) { m_orientation = orientation; }
126
127 #if OS(MACOSX)
128 HarfBuzzFace* harfBuzzFace();
129 #endif
130
hash()131 unsigned hash() const
132 {
133 #if OS(MACOSX)
134 ASSERT(m_font || !m_cgFont);
135 uintptr_t hashCodes[3] = { (uintptr_t)m_font, m_widthVariant, static_cast<uintptr_t>(m_isPrinterFont << 3 | m_orientation << 2 | m_syntheticBold << 1 | m_syntheticOblique) };
136 return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
137 #endif
138 }
139
140 const FontPlatformData& operator=(const FontPlatformData&);
141
142 bool operator==(const FontPlatformData& other) const
143 {
144 return platformIsEqual(other)
145 && m_size == other.m_size
146 && m_syntheticBold == other.m_syntheticBold
147 && m_syntheticOblique == other.m_syntheticOblique
148 && m_isColorBitmapFont == other.m_isColorBitmapFont
149 && m_isCompositeFontReference == other.m_isCompositeFontReference
150 #if OS(MACOSX)
151 && m_isPrinterFont == other.m_isPrinterFont
152 #endif
153 && m_orientation == other.m_orientation
154 && m_widthVariant == other.m_widthVariant;
155 }
156
isHashTableDeletedValue()157 bool isHashTableDeletedValue() const
158 {
159 #if OS(MACOSX)
160 return m_font == hashTableDeletedFontValue();
161 #endif
162 }
163
164 #ifndef NDEBUG
165 String description() const;
166 #endif
167
168 private:
169 bool platformIsEqual(const FontPlatformData&) const;
170 void platformDataInit(const FontPlatformData&);
171 const FontPlatformData& platformDataAssign(const FontPlatformData&);
172 #if OS(MACOSX)
173 // Load various data about the font specified by |nsFont| with the size fontSize into the following output paramters:
174 // Note: Callers should always take into account that for the Chromium port, |outNSFont| isn't necessarily the same
175 // font as |nsFont|. This because the sandbox may block loading of the original font.
176 // * outNSFont - The font that was actually loaded, for the Chromium port this may be different than nsFont.
177 // The caller is responsible for calling CFRelease() on this parameter when done with it.
178 // * cgFont - CGFontRef representing the input font at the specified point size.
179 void loadFont(NSFont*, float fontSize, NSFont*& outNSFont, CGFontRef&);
hashTableDeletedFontValue()180 static NSFont* hashTableDeletedFontValue() { return reinterpret_cast<NSFont *>(-1); }
181 #endif
182
183 public:
184 bool m_syntheticBold;
185 bool m_syntheticOblique;
186 FontOrientation m_orientation;
187 float m_size;
188 FontWidthVariant m_widthVariant;
189
190 private:
191 #if OS(MACOSX)
192 NSFont* m_font;
193 #endif
194
195 #if OS(MACOSX)
196 RetainPtr<CGFontRef> m_cgFont;
197 mutable RetainPtr<CTFontRef> m_CTFont;
198
199 RefPtr<MemoryActivatedFont> m_inMemoryFont;
200 RefPtr<HarfBuzzFace> m_harfBuzzFace;
201 #endif
202
203 bool m_isColorBitmapFont;
204 bool m_isCompositeFontReference;
205 #if OS(MACOSX)
206 bool m_isPrinterFont;
207 #endif
208 };
209
210 } // namespace WebCore
211
212 #endif // FontPlatformData_h
213
214 #endif
215