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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2009 Torch Mobile, Inc.
*
* 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 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 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.
*/
#include "config.h"
#include "CachedFont.h"
#include "CachedFontClient.h"
#include "CachedResourceClientWalker.h"
#include "CachedResourceLoader.h"
#include "FontCustomPlatformData.h"
#include "FontDescription.h"
#include "FontPlatformData.h"
#include "MemoryCache.h"
#include "SharedBuffer.h"
#include "TextResourceDecoder.h"
#include "TypedElementDescendantIterator.h"
#include "WOFFFileFormat.h"
#include <wtf/Vector.h>
#if ENABLE(SVG_FONTS)
#include "NodeList.h"
#include "SVGDocument.h"
#include "SVGElement.h"
#include "SVGFontElement.h"
#include "SVGGElement.h"
#include "SVGNames.h"
#endif
namespace WebCore {
CachedFont::CachedFont(const ResourceRequest& resourceRequest, SessionID sessionID, Type type)
: CachedResource(resourceRequest, type, sessionID)
, m_loadInitiated(false)
, m_hasCreatedFontDataWrappingResource(false)
{
}
CachedFont::~CachedFont()
{
}
void CachedFont::load(CachedResourceLoader&, const ResourceLoaderOptions& options)
{
// Don't load the file yet. Wait for an access before triggering the load.
setLoading(true);
m_options = options;
}
void CachedFont::didAddClient(CachedResourceClient* client)
{
ASSERT(client->resourceClientType() == CachedFontClient::expectedType());
if (!isLoading())
static_cast<CachedFontClient*>(client)->fontLoaded(*this);
}
void CachedFont::finishLoading(SharedBuffer* data)
{
m_data = data;
setEncodedSize(m_data.get() ? m_data->size() : 0);
setLoading(false);
checkNotify();
}
void CachedFont::beginLoadIfNeeded(CachedResourceLoader& loader)
{
if (!m_loadInitiated) {
m_loadInitiated = true;
CachedResource::load(loader, m_options);
}
}
bool CachedFont::ensureCustomFontData(const AtomicString&)
{
return ensureCustomFontData(m_data.get());
}
bool CachedFont::ensureCustomFontData(SharedBuffer* data)
{
if (!m_fontCustomPlatformData && !errorOccurred() && !isLoading() && data) {
RefPtr<SharedBuffer> buffer(data);
#if !PLATFORM(COCOA)
if (isWOFF(*buffer)) {
Vector<char> convertedFont;
if (!convertWOFFToSfnt(*buffer, convertedFont))
buffer = nullptr;
else
buffer = SharedBuffer::adoptVector(convertedFont);
}
#endif
m_fontCustomPlatformData = buffer ? createFontCustomPlatformData(*buffer) : nullptr;
m_hasCreatedFontDataWrappingResource = m_fontCustomPlatformData && (buffer == m_data);
if (!m_fontCustomPlatformData)
setStatus(DecodeError);
}
return m_fontCustomPlatformData.get();
}
RefPtr<Font> CachedFont::createFont(const FontDescription& fontDescription, const AtomicString&, bool syntheticBold, bool syntheticItalic, const FontFeatureSettings& fontFaceFeatures, const FontVariantSettings& fontFaceVariantSettings)
{
return Font::create(platformDataFromCustomData(fontDescription, syntheticBold, syntheticItalic, fontFaceFeatures, fontFaceVariantSettings), true, false);
}
FontPlatformData CachedFont::platformDataFromCustomData(const FontDescription& fontDescription, bool bold, bool italic, const FontFeatureSettings& fontFaceFeatures, const FontVariantSettings& fontFaceVariantSettings)
{
ASSERT(m_fontCustomPlatformData);
#if PLATFORM(COCOA)
return m_fontCustomPlatformData->fontPlatformData(fontDescription, bold, italic, fontFaceFeatures, fontFaceVariantSettings);
#else
UNUSED_PARAM(fontFaceFeatures);
UNUSED_PARAM(fontFaceVariantSettings);
return m_fontCustomPlatformData->fontPlatformData(fontDescription, bold, italic);
#endif
}
void CachedFont::allClientsRemoved()
{
m_fontCustomPlatformData = nullptr;
}
void CachedFont::checkNotify()
{
if (isLoading())
return;
CachedResourceClientWalker<CachedFontClient> walker(m_clients);
while (CachedFontClient* client = walker.next())
client->fontLoaded(*this);
}
bool CachedFont::mayTryReplaceEncodedData() const
{
// If a FontCustomPlatformData has ever been constructed to wrap the internal resource buffer then it still might be in use somewhere.
// That platform font object might directly reference the encoded data buffer behind this CachedFont,
// so replacing it is unsafe.
return !m_hasCreatedFontDataWrappingResource;
}
}
|
