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 mac switch to using FontPlatformDataHarfBuzz.h and we merge it with this file.
26 #if !OS(MACOSX)
27 #include "platform/fonts/harfbuzz/FontPlatformDataHarfBuzz.h"
28
29 #else
30
31 #ifndef FontPlatformData_h
32 #define FontPlatformData_h
33
34 #include "platform/PlatformExport.h"
35 #include "platform/fonts/FontOrientation.h"
36 #include "platform/fonts/FontWidthVariant.h"
37
38 #if OS(MACOSX)
39 OBJC_CLASS NSFont;
40
41 typedef struct CGFont* CGFontRef;
42 typedef const struct __CTFont* CTFontRef;
43
44 #include <CoreFoundation/CFBase.h>
45 #include <objc/objc-auto.h>
46 #endif
47
48 #include "wtf/Forward.h"
49 #include "wtf/HashTableDeletedValueType.h"
50 #include "wtf/PassRefPtr.h"
51 #include "wtf/RefCounted.h"
52 #include "wtf/RetainPtr.h"
53 #include "wtf/text/StringImpl.h"
54
55 #if OS(MACOSX)
56 #include "platform/fonts/mac/MemoryActivatedFont.h"
57 #include "third_party/skia/include/core/SkTypeface.h"
58 #endif
59
60 #if OS(MACOSX)
61 typedef struct CGFont* CGFontRef;
62 typedef const struct __CTFont* CTFontRef;
63 typedef UInt32 FMFont;
64 typedef FMFont ATSUFontID;
65 typedef UInt32 ATSFontRef;
66 #endif
67
68 namespace WebCore {
69
70 class FontDescription;
71 class SharedBuffer;
72
73 #if OS(MACOSX)
74 class HarfBuzzFace;
75 #endif
76
77 #if OS(MACOSX)
toCTFontRef(NSFont * nsFont)78 inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); }
79 #endif
80
81 class PLATFORM_EXPORT FontPlatformData {
82 public:
83 FontPlatformData(WTF::HashTableDeletedValueType);
84 FontPlatformData();
85 FontPlatformData(const FontPlatformData&);
86 FontPlatformData(const FontDescription&, const AtomicString& family);
87 FontPlatformData(float size, bool syntheticBold, bool syntheticOblique, FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
88
89 #if OS(MACOSX)
90 FontPlatformData(NSFont*, float size, bool syntheticBold = false, bool syntheticOblique = false,
91 FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
92 FontPlatformData(CGFontRef, float size, bool syntheticBold, bool syntheticOblique, FontOrientation, FontWidthVariant);
93 #endif
94
95 ~FontPlatformData();
96
97 #if OS(MACOSX)
font()98 NSFont* font() const { return m_font; }
99 void setFont(NSFont*);
100 #endif
101
102 #if OS(MACOSX)
cgFont()103 CGFontRef cgFont() const { return m_cgFont.get(); }
104 CTFontRef ctFont() const;
105 SkTypeface* typeface() 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
orientation()120 FontOrientation orientation() const { return m_orientation; }
widthVariant()121 FontWidthVariant widthVariant() const { return m_widthVariant; }
122
setOrientation(FontOrientation orientation)123 void setOrientation(FontOrientation orientation) { m_orientation = orientation; }
124
125 #if OS(MACOSX)
126 HarfBuzzFace* harfBuzzFace();
127 #endif
128
hash()129 unsigned hash() const
130 {
131 #if OS(MACOSX)
132 ASSERT(m_font || !m_cgFont);
133 uintptr_t hashCodes[3] = { (uintptr_t)m_font, m_widthVariant, static_cast<uintptr_t>(m_orientation << 2 | m_syntheticBold << 1 | m_syntheticOblique) };
134 return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
135 #endif
136 }
137
138 const FontPlatformData& operator=(const FontPlatformData&);
139
140 bool operator==(const FontPlatformData& other) const
141 {
142 return platformIsEqual(other)
143 && m_size == other.m_size
144 && m_syntheticBold == other.m_syntheticBold
145 && m_syntheticOblique == other.m_syntheticOblique
146 && m_isColorBitmapFont == other.m_isColorBitmapFont
147 && m_isCompositeFontReference == other.m_isCompositeFontReference
148 && m_orientation == other.m_orientation
149 && m_widthVariant == other.m_widthVariant;
150 }
151
isHashTableDeletedValue()152 bool isHashTableDeletedValue() const
153 {
154 #if OS(MACOSX)
155 return m_font == hashTableDeletedFontValue();
156 #endif
157 }
158
159 #ifndef NDEBUG
160 String description() const;
161 #endif
162
163 private:
164 bool platformIsEqual(const FontPlatformData&) const;
165 void platformDataInit(const FontPlatformData&);
166 const FontPlatformData& platformDataAssign(const FontPlatformData&);
167 #if OS(MACOSX)
168 // Load various data about the font specified by |nsFont| with the size fontSize into the following output paramters:
169 // Note: Callers should always take into account that for the Chromium port, |outNSFont| isn't necessarily the same
170 // font as |nsFont|. This because the sandbox may block loading of the original font.
171 // * outNSFont - The font that was actually loaded, for the Chromium port this may be different than nsFont.
172 // The caller is responsible for calling CFRelease() on this parameter when done with it.
173 // * cgFont - CGFontRef representing the input font at the specified point size.
174 void loadFont(NSFont*, float fontSize, NSFont*& outNSFont, CGFontRef&);
hashTableDeletedFontValue()175 static NSFont* hashTableDeletedFontValue() { return reinterpret_cast<NSFont *>(-1); }
176 #endif
177
178 public:
179 bool m_syntheticBold;
180 bool m_syntheticOblique;
181 FontOrientation m_orientation;
182 float m_size;
183 FontWidthVariant m_widthVariant;
184
185 private:
186 #if OS(MACOSX)
187 NSFont* m_font;
188 #endif
189
190 #if OS(MACOSX)
191 RetainPtr<CGFontRef> m_cgFont;
192 mutable RetainPtr<CTFontRef> m_CTFont;
193
194 RefPtr<MemoryActivatedFont> m_inMemoryFont;
195 RefPtr<HarfBuzzFace> m_harfBuzzFace;
196 mutable RefPtr<SkTypeface> m_typeface;
197 #endif
198
199 bool m_isColorBitmapFont;
200 bool m_isCompositeFontReference;
201 };
202
203 } // namespace WebCore
204
205 #endif // FontPlatformData_h
206
207 #endif
208