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
toCTFontRef(NSFont * nsFont)51 inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); }
52 #endif
53
54 struct FontPlatformData {
FontPlatformDataFontPlatformData55 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
FontPlatformDataFontPlatformData69 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
FontPlatformDataFontPlatformData83 FontPlatformData(WTF::HashTableDeletedValueType) : m_font(hashTableDeletedFontValue()) { }
isHashTableDeletedValueFontPlatformData84 bool isHashTableDeletedValue() const { return m_font == hashTableDeletedFontValue(); }
85
sizeFontPlatformData86 float size() const { return m_size; }
syntheticBoldFontPlatformData87 bool syntheticBold() const { return m_syntheticBold; }
syntheticObliqueFontPlatformData88 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
hashFontPlatformData96 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
fontFontPlatformData111 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
cgFontFontPlatformData118 CGFontRef cgFont() const { return m_cgFont.get(); }
119 #else
cgFontFontPlatformData120 CGFontRef cgFont() const { return m_cgFont; }
121 #endif
122
123 #ifndef NDEBUG
124 String description() const;
125 #endif
126
127 private:
hashTableDeletedFontValueFontPlatformData128 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