1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* Copyright (C) 2006, 2010, 2013 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef FontGlyphs_h
#define FontGlyphs_h
#include "FontSelector.h"
#include "SimpleFontData.h"
#include "WidthCache.h"
#include <wtf/Forward.h>
#include <wtf/MainThread.h>
#if PLATFORM(IOS)
#include "WebCoreThread.h"
#endif
namespace WebCore {
class GlyphPageTreeNode;
class GraphicsContext;
class IntRect;
class FontDescription;
class FontPlatformData;
class FontSelector;
const int cAllFamiliesScanned = -1;
class FontGlyphs : public RefCounted<FontGlyphs> {
WTF_MAKE_NONCOPYABLE(FontGlyphs);
public:
typedef HashMap<int, GlyphPageTreeNode*, DefaultHash<int>::Hash> GlyphPages;
class GlyphPagesStateSaver {
public:
GlyphPagesStateSaver(FontGlyphs& glyphs)
: m_glyphs(glyphs)
, m_pages(glyphs.m_pages)
, m_pageZero(glyphs.m_pageZero)
{
}
~GlyphPagesStateSaver()
{
m_glyphs.m_pages = m_pages;
m_glyphs.m_pageZero = m_pageZero;
}
private:
FontGlyphs& m_glyphs;
GlyphPages& m_pages;
GlyphPageTreeNode* m_pageZero;
};
static PassRef<FontGlyphs> create(PassRefPtr<FontSelector> fontSelector) { return adoptRef(*new FontGlyphs(fontSelector)); }
static PassRef<FontGlyphs> createForPlatformFont(const FontPlatformData& platformData) { return adoptRef(*new FontGlyphs(platformData)); }
~FontGlyphs() { releaseFontData(); }
bool isForPlatformFont() const { return m_isForPlatformFont; }
std::pair<GlyphData, GlyphPage*> glyphDataAndPageForCharacter(const FontDescription&, UChar32, bool mirror, FontDataVariant) const;
bool isFixedPitch(const FontDescription&) const;
void determinePitch(const FontDescription&) const;
bool loadingCustomFonts() const { return m_loadingCustomFonts; }
FontSelector* fontSelector() const { return m_fontSelector.get(); }
// FIXME: It should be possible to combine fontSelectorVersion and generation.
unsigned fontSelectorVersion() const { return m_fontSelectorVersion; }
unsigned generation() const { return m_generation; }
WidthCache& widthCache() const { return m_widthCache; }
const SimpleFontData* primarySimpleFontData(const FontDescription&) const;
const FontData* primaryFontData(const FontDescription& description) const { return realizeFontDataAt(description, 0); }
WEBCORE_EXPORT const FontData* realizeFontDataAt(const FontDescription&, unsigned index) const;
private:
FontGlyphs(PassRefPtr<FontSelector>);
FontGlyphs(const FontPlatformData&);
WEBCORE_EXPORT void releaseFontData();
mutable Vector<RefPtr<FontData>, 1> m_realizedFontData;
mutable GlyphPages m_pages;
mutable GlyphPageTreeNode* m_pageZero;
mutable const SimpleFontData* m_cachedPrimarySimpleFontData;
RefPtr<FontSelector> m_fontSelector;
mutable WidthCache m_widthCache;
unsigned m_fontSelectorVersion;
mutable int m_familyIndex;
unsigned short m_generation;
mutable unsigned m_pitch : 3; // Pitch
mutable bool m_loadingCustomFonts : 1;
bool m_isForPlatformFont : 1;
};
inline bool FontGlyphs::isFixedPitch(const FontDescription& description) const
{
if (m_pitch == UnknownPitch)
determinePitch(description);
return m_pitch == FixedPitch;
};
inline const SimpleFontData* FontGlyphs::primarySimpleFontData(const FontDescription& description) const
{
ASSERT(isMainThread());
if (!m_cachedPrimarySimpleFontData)
m_cachedPrimarySimpleFontData = primaryFontData(description)->fontDataForCharacter(' ');
return m_cachedPrimarySimpleFontData;
}
}
#endif
|
