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| 1 /* | |
| 2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #ifndef FontResource_h | |
| 27 #define FontResource_h | |
| 28 | |
| 29 #include "core/CoreExport.h" | |
| 30 #include "core/fetch/Resource.h" | |
| 31 #include "core/fetch/ResourceClient.h" | |
| 32 #include "platform/Timer.h" | |
| 33 #include "platform/fonts/FontOrientation.h" | |
| 34 #include "platform/heap/Handle.h" | |
| 35 #include <memory> | |
| 36 | |
| 37 namespace blink { | |
| 38 | |
| 39 class FetchRequest; | |
| 40 class ResourceFetcher; | |
| 41 class FontPlatformData; | |
| 42 class FontCustomPlatformData; | |
| 43 class FontResourceClient; | |
| 44 | |
| 45 class CORE_EXPORT FontResource final : public Resource { | |
| 46 public: | |
| 47 using ClientType = FontResourceClient; | |
| 48 | |
| 49 static FontResource* fetch(FetchRequest&, ResourceFetcher*); | |
| 50 ~FontResource() override; | |
| 51 | |
| 52 void didAddClient(ResourceClient*) override; | |
| 53 | |
| 54 void setRevalidatingRequest(const ResourceRequest&) override; | |
| 55 | |
| 56 void allClientsAndObserversRemoved() override; | |
| 57 void startLoadLimitTimers(); | |
| 58 | |
| 59 void setCORSFailed() override { m_corsFailed = true; } | |
| 60 bool isCORSFailed() const { return m_corsFailed; } | |
| 61 String otsParsingMessage() const { return m_otsParsingMessage; } | |
| 62 | |
| 63 bool ensureCustomFontData(); | |
| 64 FontPlatformData platformDataFromCustomData( | |
| 65 float size, | |
| 66 bool bold, | |
| 67 bool italic, | |
| 68 FontOrientation = FontOrientation::Horizontal); | |
| 69 | |
| 70 // Returns true if the loading priority of the remote font resource can be | |
| 71 // lowered. The loading priority of the font can be lowered only if the | |
| 72 // font is not needed for painting the text. | |
| 73 bool isLowPriorityLoadingAllowedForRemoteFont() const; | |
| 74 | |
| 75 void onMemoryDump(WebMemoryDumpLevelOfDetail, | |
| 76 WebProcessMemoryDump*) const override; | |
| 77 | |
| 78 private: | |
| 79 class FontResourceFactory : public ResourceFactory { | |
| 80 public: | |
| 81 FontResourceFactory() : ResourceFactory(Resource::Font) {} | |
| 82 | |
| 83 Resource* create(const ResourceRequest& request, | |
| 84 const ResourceLoaderOptions& options, | |
| 85 const String& charset) const override { | |
| 86 return new FontResource(request, options); | |
| 87 } | |
| 88 }; | |
| 89 FontResource(const ResourceRequest&, const ResourceLoaderOptions&); | |
| 90 | |
| 91 void checkNotify() override; | |
| 92 void fontLoadShortLimitCallback(TimerBase*); | |
| 93 void fontLoadLongLimitCallback(TimerBase*); | |
| 94 | |
| 95 enum LoadLimitState { | |
| 96 LoadNotStarted, | |
| 97 UnderLimit, | |
| 98 ShortLimitExceeded, | |
| 99 LongLimitExceeded | |
| 100 }; | |
| 101 | |
| 102 std::unique_ptr<FontCustomPlatformData> m_fontData; | |
| 103 String m_otsParsingMessage; | |
| 104 LoadLimitState m_loadLimitState; | |
| 105 bool m_corsFailed; | |
| 106 Timer<FontResource> m_fontLoadShortLimitTimer; | |
| 107 Timer<FontResource> m_fontLoadLongLimitTimer; | |
| 108 | |
| 109 friend class MemoryCache; | |
| 110 }; | |
| 111 | |
| 112 DEFINE_RESOURCE_TYPE_CASTS(Font); | |
| 113 | |
| 114 class FontResourceClient : public ResourceClient { | |
| 115 public: | |
| 116 ~FontResourceClient() override {} | |
| 117 static bool isExpectedType(ResourceClient* client) { | |
| 118 return client->getResourceClientType() == FontType; | |
| 119 } | |
| 120 ResourceClientType getResourceClientType() const final { return FontType; } | |
| 121 virtual void fontLoadShortLimitExceeded(FontResource*) {} | |
| 122 virtual void fontLoadLongLimitExceeded(FontResource*) {} | |
| 123 | |
| 124 // Returns true if loading priority of remote font resources can be lowered. | |
| 125 virtual bool isLowPriorityLoadingAllowedForRemoteFont() const { | |
| 126 // Only the RemoteFontFaceSources clients can prevent lowering of loading | |
| 127 // priority of the remote fonts. Set the default to true to prevent | |
| 128 // other clients from incorrectly returning false. | |
| 129 return true; | |
| 130 } | |
| 131 }; | |
| 132 | |
| 133 } // namespace blink | |
| 134 | |
| 135 #endif | |
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Chromium Code Reviews
Issue 2501543002:
Loading: move FontResource to core/loader/resource (Closed)
