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
|
/*
* Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CSSFontSelector_h
#define CSSFontSelector_h
#include "core/CoreExport.h"
#include "core/css/FontFaceCache.h"
#include "platform/fonts/FontSelector.h"
#include "platform/fonts/GenericFontFamilySettings.h"
#include "platform/heap/Handle.h"
#include "wtf/Forward.h"
#include "wtf/HashMap.h"
#include "wtf/HashSet.h"
namespace blink {
class CSSFontSelectorClient;
class Document;
class FontDescription;
class CORE_EXPORT CSSFontSelector : public FontSelector {
public:
static CSSFontSelector* create(Document* document) {
return new CSSFontSelector(document);
}
~CSSFontSelector() override;
unsigned version() const override { return m_fontFaceCache.version(); }
PassRefPtr<FontData> getFontData(const FontDescription&,
const AtomicString&) override;
void willUseFontData(const FontDescription&,
const AtomicString& family,
const String& text) override;
void willUseRange(const FontDescription&,
const AtomicString& familyName,
const FontDataForRangeSet&) override;
bool isPlatformFontAvailable(const FontDescription&,
const AtomicString& family);
void fontFaceInvalidated();
// FontCacheClient implementation
void fontCacheInvalidated() override;
void registerForInvalidationCallbacks(CSSFontSelectorClient*);
void unregisterForInvalidationCallbacks(CSSFontSelectorClient*);
Document* document() const { return m_document; }
FontFaceCache* fontFaceCache() { return &m_fontFaceCache; }
const GenericFontFamilySettings& genericFontFamilySettings() const {
return m_genericFontFamilySettings;
}
void updateGenericFontFamilySettings(Document&);
DECLARE_VIRTUAL_TRACE();
protected:
explicit CSSFontSelector(Document*);
void dispatchInvalidationCallbacks();
private:
// TODO(Oilpan): Ideally this should just be a traced Member but that will
// currently leak because ComputedStyle and its data are not on the heap.
// See crbug.com/383860 for details.
WeakMember<Document> m_document;
// FIXME: Move to Document or StyleEngine.
FontFaceCache m_fontFaceCache;
HeapHashSet<WeakMember<CSSFontSelectorClient>> m_clients;
GenericFontFamilySettings m_genericFontFamilySettings;
};
} // namespace blink
#endif // CSSFontSelector_h
|
