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| 1 /* | |
| 2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. | |
| 3 * Copyright (C) 2009 Torch Mobile, Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * | |
| 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 25 */ | |
| 26 | |
| 27 #include "core/fetch/FontResource.h" | |
| 28 | |
| 29 #include "core/fetch/FetchRequest.h" | |
| 30 #include "core/fetch/ResourceClientWalker.h" | |
| 31 #include "core/fetch/ResourceFetcher.h" | |
| 32 #include "platform/Histogram.h" | |
| 33 #include "platform/SharedBuffer.h" | |
| 34 #include "platform/fonts/FontCustomPlatformData.h" | |
| 35 #include "platform/fonts/FontPlatformData.h" | |
| 36 #include "wtf/CurrentTime.h" | |
| 37 | |
| 38 namespace blink { | |
| 39 | |
| 40 // Durations of font-display periods. | |
| 41 // https://tabatkins.github.io/specs/css-font-display/#font-display-desc | |
| 42 static const double fontLoadWaitShortLimitSec = 0.1; | |
| 43 static const double fontLoadWaitLongLimitSec = 3.0; | |
| 44 | |
| 45 enum FontPackageFormat { | |
| 46 PackageFormatUnknown, | |
| 47 PackageFormatSFNT, | |
| 48 PackageFormatWOFF, | |
| 49 PackageFormatWOFF2, | |
| 50 PackageFormatSVG, | |
| 51 PackageFormatEnumMax | |
| 52 }; | |
| 53 | |
| 54 static FontPackageFormat packageFormatOf(SharedBuffer* buffer) { | |
| 55 if (buffer->size() < 4) | |
| 56 return PackageFormatUnknown; | |
| 57 | |
| 58 const char* data = buffer->data(); | |
| 59 if (data[0] == 'w' && data[1] == 'O' && data[2] == 'F' && data[3] == 'F') | |
| 60 return PackageFormatWOFF; | |
| 61 if (data[0] == 'w' && data[1] == 'O' && data[2] == 'F' && data[3] == '2') | |
| 62 return PackageFormatWOFF2; | |
| 63 return PackageFormatSFNT; | |
| 64 } | |
| 65 | |
| 66 static void recordPackageFormatHistogram(FontPackageFormat format) { | |
| 67 DEFINE_THREAD_SAFE_STATIC_LOCAL( | |
| 68 EnumerationHistogram, packageFormatHistogram, | |
| 69 new EnumerationHistogram("WebFont.PackageFormat", PackageFormatEnumMax)); | |
| 70 packageFormatHistogram.count(format); | |
| 71 } | |
| 72 | |
| 73 FontResource* FontResource::fetch(FetchRequest& request, | |
| 74 ResourceFetcher* fetcher) { | |
| 75 DCHECK_EQ(request.resourceRequest().frameType(), | |
| 76 WebURLRequest::FrameTypeNone); | |
| 77 request.mutableResourceRequest().setRequestContext( | |
| 78 WebURLRequest::RequestContextFont); | |
| 79 return toFontResource( | |
| 80 fetcher->requestResource(request, FontResourceFactory())); | |
| 81 } | |
| 82 | |
| 83 FontResource::FontResource(const ResourceRequest& resourceRequest, | |
| 84 const ResourceLoaderOptions& options) | |
| 85 : Resource(resourceRequest, Font, options), | |
| 86 m_loadLimitState(LoadNotStarted), | |
| 87 m_corsFailed(false), | |
| 88 m_fontLoadShortLimitTimer(this, | |
| 89 &FontResource::fontLoadShortLimitCallback), | |
| 90 m_fontLoadLongLimitTimer(this, &FontResource::fontLoadLongLimitCallback) { | |
| 91 } | |
| 92 | |
| 93 FontResource::~FontResource() {} | |
| 94 | |
| 95 void FontResource::didAddClient(ResourceClient* c) { | |
| 96 DCHECK(FontResourceClient::isExpectedType(c)); | |
| 97 Resource::didAddClient(c); | |
| 98 if (m_loadLimitState == ShortLimitExceeded || | |
| 99 m_loadLimitState == LongLimitExceeded) | |
| 100 static_cast<FontResourceClient*>(c)->fontLoadShortLimitExceeded(this); | |
| 101 if (m_loadLimitState == LongLimitExceeded) | |
| 102 static_cast<FontResourceClient*>(c)->fontLoadLongLimitExceeded(this); | |
| 103 } | |
| 104 | |
| 105 void FontResource::setRevalidatingRequest(const ResourceRequest& request) { | |
| 106 // Reload will use the same object, and needs to reset |m_loadLimitState| | |
| 107 // before any didAddClient() is called again. | |
| 108 m_loadLimitState = LoadNotStarted; | |
| 109 Resource::setRevalidatingRequest(request); | |
| 110 } | |
| 111 | |
| 112 void FontResource::startLoadLimitTimers() { | |
| 113 DCHECK(isLoading()); | |
| 114 DCHECK_EQ(m_loadLimitState, LoadNotStarted); | |
| 115 m_loadLimitState = UnderLimit; | |
| 116 m_fontLoadShortLimitTimer.startOneShot(fontLoadWaitShortLimitSec, | |
| 117 BLINK_FROM_HERE); | |
| 118 m_fontLoadLongLimitTimer.startOneShot(fontLoadWaitLongLimitSec, | |
| 119 BLINK_FROM_HERE); | |
| 120 } | |
| 121 | |
| 122 bool FontResource::ensureCustomFontData() { | |
| 123 if (!m_fontData && !errorOccurred() && !isLoading()) { | |
| 124 if (data()) | |
| 125 m_fontData = FontCustomPlatformData::create(data(), m_otsParsingMessage); | |
| 126 | |
| 127 if (m_fontData) { | |
| 128 recordPackageFormatHistogram(packageFormatOf(data())); | |
| 129 } else { | |
| 130 setStatus(DecodeError); | |
| 131 recordPackageFormatHistogram(PackageFormatUnknown); | |
| 132 } | |
| 133 } | |
| 134 return m_fontData.get(); | |
| 135 } | |
| 136 | |
| 137 FontPlatformData FontResource::platformDataFromCustomData( | |
| 138 float size, | |
| 139 bool bold, | |
| 140 bool italic, | |
| 141 FontOrientation orientation) { | |
| 142 DCHECK(m_fontData); | |
| 143 return m_fontData->fontPlatformData(size, bold, italic, orientation); | |
| 144 } | |
| 145 | |
| 146 void FontResource::fontLoadShortLimitCallback(TimerBase*) { | |
| 147 if (!isLoading()) | |
| 148 return; | |
| 149 DCHECK_EQ(m_loadLimitState, UnderLimit); | |
| 150 m_loadLimitState = ShortLimitExceeded; | |
| 151 ResourceClientWalker<FontResourceClient> walker(clients()); | |
| 152 while (FontResourceClient* client = walker.next()) | |
| 153 client->fontLoadShortLimitExceeded(this); | |
| 154 } | |
| 155 | |
| 156 void FontResource::fontLoadLongLimitCallback(TimerBase*) { | |
| 157 if (!isLoading()) | |
| 158 return; | |
| 159 DCHECK_EQ(m_loadLimitState, ShortLimitExceeded); | |
| 160 m_loadLimitState = LongLimitExceeded; | |
| 161 ResourceClientWalker<FontResourceClient> walker(clients()); | |
| 162 while (FontResourceClient* client = walker.next()) | |
| 163 client->fontLoadLongLimitExceeded(this); | |
| 164 } | |
| 165 | |
| 166 void FontResource::allClientsAndObserversRemoved() { | |
| 167 m_fontData.reset(); | |
| 168 Resource::allClientsAndObserversRemoved(); | |
| 169 } | |
| 170 | |
| 171 void FontResource::checkNotify() { | |
| 172 m_fontLoadShortLimitTimer.stop(); | |
| 173 m_fontLoadLongLimitTimer.stop(); | |
| 174 | |
| 175 Resource::checkNotify(); | |
| 176 } | |
| 177 | |
| 178 bool FontResource::isLowPriorityLoadingAllowedForRemoteFont() const { | |
| 179 DCHECK(!url().protocolIsData()); | |
| 180 DCHECK(!isLoaded()); | |
| 181 ResourceClientWalker<FontResourceClient> walker(clients()); | |
| 182 while (FontResourceClient* client = walker.next()) { | |
| 183 if (!client->isLowPriorityLoadingAllowedForRemoteFont()) { | |
| 184 return false; | |
| 185 } | |
| 186 } | |
| 187 return true; | |
| 188 } | |
| 189 | |
| 190 void FontResource::onMemoryDump(WebMemoryDumpLevelOfDetail level, | |
| 191 WebProcessMemoryDump* memoryDump) const { | |
| 192 Resource::onMemoryDump(level, memoryDump); | |
| 193 if (!m_fontData) | |
| 194 return; | |
| 195 const String name = getMemoryDumpName() + "/decoded_webfont"; | |
| 196 WebMemoryAllocatorDump* dump = memoryDump->createMemoryAllocatorDump(name); | |
| 197 dump->addScalar("size", "bytes", m_fontData->dataSize()); | |
| 198 memoryDump->addSuballocation(dump->guid(), "malloc"); | |
| 199 } | |
| 200 | |
| 201 } // namespace blink | |
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Chromium Code Reviews
Issue 2501543002:
Loading: move FontResource to core/loader/resource (Closed)
