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1 /* | 1 /* |
2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) | 2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) |
3 Copyright (C) 2001 Dirk Mueller <mueller@kde.org> | 3 Copyright (C) 2001 Dirk Mueller <mueller@kde.org> |
4 Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) | 4 Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
5 Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. | 5 Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. |
6 | 6 |
7 This library is free software; you can redistribute it and/or | 7 This library is free software; you can redistribute it and/or |
8 modify it under the terms of the GNU Library General Public | 8 modify it under the terms of the GNU Library General Public |
9 License as published by the Free Software Foundation; either | 9 License as published by the Free Software Foundation; either |
10 version 2 of the License, or (at your option) any later version. | 10 version 2 of the License, or (at your option) any later version. |
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37 namespace blink { | 37 namespace blink { |
38 | 38 |
39 class FetchRequest; | 39 class FetchRequest; |
40 class FloatSize; | 40 class FloatSize; |
41 class ImageResourceObserver; | 41 class ImageResourceObserver; |
42 class MemoryCache; | 42 class MemoryCache; |
43 class ResourceClient; | 43 class ResourceClient; |
44 class ResourceFetcher; | 44 class ResourceFetcher; |
45 class SecurityOrigin; | 45 class SecurityOrigin; |
46 | 46 |
| 47 // ImageResource class represents an image type resource. |
| 48 // |
| 49 // As for the lifetimes of m_image and m_data, see this document: |
| 50 // https://docs.google.com/document/d/1v0yTAZ6wkqX2U_M6BNIGUJpM1s0TIw1VsqpxoL7ac
iY/edit?usp=sharing |
47 class CORE_EXPORT ImageResource final : public Resource, public ImageObserver, p
ublic MultipartImageResourceParser::Client { | 51 class CORE_EXPORT ImageResource final : public Resource, public ImageObserver, p
ublic MultipartImageResourceParser::Client { |
48 friend class MemoryCache; | 52 friend class MemoryCache; |
49 USING_GARBAGE_COLLECTED_MIXIN(ImageResource); | 53 USING_GARBAGE_COLLECTED_MIXIN(ImageResource); |
50 public: | 54 public: |
51 using ClientType = ResourceClient; | 55 using ClientType = ResourceClient; |
52 | 56 |
53 static ImageResource* fetch(FetchRequest&, ResourceFetcher*); | 57 static ImageResource* fetch(FetchRequest&, ResourceFetcher*); |
54 | 58 |
55 static ImageResource* create(blink::Image* image) | 59 static ImageResource* create(blink::Image* image) |
56 { | 60 { |
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94 void didAddClient(ResourceClient*) override; | 98 void didAddClient(ResourceClient*) override; |
95 | 99 |
96 void addObserver(ImageResourceObserver*); | 100 void addObserver(ImageResourceObserver*); |
97 void removeObserver(ImageResourceObserver*); | 101 void removeObserver(ImageResourceObserver*); |
98 bool hasClientsOrObservers() const override { return Resource::hasClientsOrO
bservers() || !m_observers.isEmpty() || !m_finishedObservers.isEmpty(); } | 102 bool hasClientsOrObservers() const override { return Resource::hasClientsOrO
bservers() || !m_observers.isEmpty() || !m_finishedObservers.isEmpty(); } |
99 | 103 |
100 ResourcePriority priorityFromObservers() override; | 104 ResourcePriority priorityFromObservers() override; |
101 | 105 |
102 void allClientsAndObserversRemoved() override; | 106 void allClientsAndObserversRemoved() override; |
103 | 107 |
| 108 PassRefPtr<SharedBuffer> resourceBuffer() const override; |
104 void appendData(const char*, size_t) override; | 109 void appendData(const char*, size_t) override; |
105 void error(const ResourceError&) override; | 110 void error(const ResourceError&) override; |
106 void responseReceived(const ResourceResponse&, std::unique_ptr<WebDataConsum
erHandle>) override; | 111 void responseReceived(const ResourceResponse&, std::unique_ptr<WebDataConsum
erHandle>) override; |
107 void finish(double finishTime = 0.0) override; | 112 void finish(double finishTime = 0.0) override; |
108 | 113 |
109 // For compatibility, images keep loading even if there are HTTP errors. | 114 // For compatibility, images keep loading even if there are HTTP errors. |
110 bool shouldIgnoreHTTPStatusCodeErrors() const override { return true; } | 115 bool shouldIgnoreHTTPStatusCodeErrors() const override { return true; } |
111 | 116 |
112 bool isImage() const override { return true; } | 117 bool isImage() const override { return true; } |
113 | 118 |
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174 bool m_hasDevicePixelRatioHeaderValue; | 179 bool m_hasDevicePixelRatioHeaderValue; |
175 HashCountedSet<ImageResourceObserver*> m_observers; | 180 HashCountedSet<ImageResourceObserver*> m_observers; |
176 HashCountedSet<ImageResourceObserver*> m_finishedObservers; | 181 HashCountedSet<ImageResourceObserver*> m_finishedObservers; |
177 }; | 182 }; |
178 | 183 |
179 DEFINE_RESOURCE_TYPE_CASTS(Image); | 184 DEFINE_RESOURCE_TYPE_CASTS(Image); |
180 | 185 |
181 } // namespace blink | 186 } // namespace blink |
182 | 187 |
183 #endif | 188 #endif |
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