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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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34 namespace blink { | 34 namespace blink { |
35 | 35 |
36 class ImageResourceClient; | 36 class ImageResourceClient; |
37 class FetchRequest; | 37 class FetchRequest; |
38 class ResourceFetcher; | 38 class ResourceFetcher; |
39 class FloatSize; | 39 class FloatSize; |
40 class Length; | 40 class Length; |
41 class MemoryCache; | 41 class MemoryCache; |
42 class LayoutObject; | 42 class LayoutObject; |
43 class SecurityOrigin; | 43 class SecurityOrigin; |
44 class SVGImageForContainer; | |
45 | 44 |
46 class CORE_EXPORT ImageResource final : public Resource, public ImageObserver { | 45 class CORE_EXPORT ImageResource final : public Resource, public ImageObserver { |
47 friend class MemoryCache; | 46 friend class MemoryCache; |
48 | 47 |
49 public: | 48 public: |
50 typedef ImageResourceClient ClientType; | 49 typedef ImageResourceClient ClientType; |
51 | 50 |
52 static ResourcePtr<ImageResource> fetch(FetchRequest&, ResourceFetcher*); | 51 static ResourcePtr<ImageResource> fetch(FetchRequest&, ResourceFetcher*); |
53 | 52 |
54 ImageResource(blink::Image*); | 53 ImageResource(blink::Image*); |
55 // Exposed for testing | 54 // Exposed for testing |
56 ImageResource(const ResourceRequest&, blink::Image*); | 55 ImageResource(const ResourceRequest&, blink::Image*); |
57 ~ImageResource() override; | 56 ~ImageResource() override; |
58 | 57 |
59 void load(ResourceFetcher*, const ResourceLoaderOptions&) override; | 58 void load(ResourceFetcher*, const ResourceLoaderOptions&) override; |
60 | 59 |
61 blink::Image* image(); // Returns the nullImage() if the image is not availa
ble yet. | 60 blink::Image* image(); // Returns the nullImage() if the image is not availa
ble yet. |
62 blink::Image* imageForLayoutObject(const LayoutObject*); // Returns the null
Image() if the image is not available yet. | |
63 bool hasImage() const { return m_image.get(); } | 61 bool hasImage() const { return m_image.get(); } |
64 // Side effect: ensures decoded image is in cache, therefore should only be
called when about to draw the image. | 62 // Side effect: ensures decoded image is in cache, therefore should only be
called when about to draw the image. |
65 // FIXME: Decoding image on the main thread is expensive, so rather than for
cing decode, consider returning false | 63 // FIXME: Decoding image on the main thread is expensive, so rather than for
cing decode, consider returning false |
66 // when image is not decoded yet, as we do in case of deferred decoding. | 64 // when image is not decoded yet, as we do in case of deferred decoding. |
67 bool currentFrameKnownToBeOpaque(const LayoutObject*); | 65 bool currentFrameKnownToBeOpaque(const LayoutObject*); |
68 | 66 |
69 static std::pair<blink::Image*, float> brokenImage(float deviceScaleFactor);
// Returns an image and the image's resolution scale factor. | 67 static std::pair<blink::Image*, float> brokenImage(float deviceScaleFactor);
// Returns an image and the image's resolution scale factor. |
70 bool willPaintBrokenImage() const; | 68 bool willPaintBrokenImage() const; |
71 | 69 |
72 bool canRender(const LayoutObject& layoutObject, float multiplier) { return
!errorOccurred() && !imageSizeForLayoutObject(&layoutObject, multiplier).isEmpty
(); } | 70 bool canRender(const LayoutObject& layoutObject, float multiplier) { return
!errorOccurred() && !imageSizeForLayoutObject(&layoutObject, multiplier).isEmpty
(); } |
73 | 71 |
74 void setContainerSizeForLayoutObject(const ImageResourceClient*, const IntSi
ze&, float); | |
75 bool usesImageContainerSize() const; | 72 bool usesImageContainerSize() const; |
76 bool imageHasRelativeWidth() const; | 73 bool imageHasRelativeWidth() const; |
77 bool imageHasRelativeHeight() const; | 74 bool imageHasRelativeHeight() const; |
78 // The device pixel ratio we got from the server for this image, or 1.0. | 75 // The device pixel ratio we got from the server for this image, or 1.0. |
79 float devicePixelRatioHeaderValue() const { return m_devicePixelRatioHeaderV
alue; } | 76 float devicePixelRatioHeaderValue() const { return m_devicePixelRatioHeaderV
alue; } |
80 bool hasDevicePixelRatioHeaderValue() const { return m_hasDevicePixelRatioHe
aderValue; } | 77 bool hasDevicePixelRatioHeaderValue() const { return m_hasDevicePixelRatioHe
aderValue; } |
81 | 78 |
82 enum SizeType { | 79 enum SizeType { |
83 NormalSize, // Report the size of the image associated with a certain la
youtObject | 80 IntrinsicSize, // Report the intrinsic size. |
84 IntrinsicSize, // Report the intrinsic size, i.e. ignore whatever has be
en set extrinsically. | |
85 IntrinsicCorrectedToDPR, // Report the intrinsic size corrected to accou
nt for image density. | 81 IntrinsicCorrectedToDPR, // Report the intrinsic size corrected to accou
nt for image density. |
86 }; | 82 }; |
87 // This method takes a zoom multiplier that can be used to increase the natu
ral size of the image by the zoom. | 83 // This method takes a zoom multiplier that can be used to increase the natu
ral size of the image by the zoom. |
88 LayoutSize imageSizeForLayoutObject(const LayoutObject*, float multiplier, S
izeType = NormalSize); // returns the size of the complete image. | 84 LayoutSize imageSizeForLayoutObject(const LayoutObject*, float multiplier, S
izeType = IntrinsicSize); // returns the size of the complete image. |
89 void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHei
ght, FloatSize& intrinsicRatio); | 85 void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHei
ght, FloatSize& intrinsicRatio); |
90 | 86 |
91 bool isAccessAllowed(SecurityOrigin*); | 87 bool isAccessAllowed(SecurityOrigin*); |
92 | 88 |
93 void updateImageAnimationPolicy(); | 89 void updateImageAnimationPolicy(); |
94 | 90 |
95 void didAddClient(ResourceClient*) override; | 91 void didAddClient(ResourceClient*) override; |
96 void didRemoveClient(ResourceClient*) override; | 92 void didRemoveClient(ResourceClient*) override; |
97 | 93 |
98 void allClientsRemoved() override; | 94 void allClientsRemoved() override; |
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135 ImageResource(const ResourceRequest&); | 131 ImageResource(const ResourceRequest&); |
136 | 132 |
137 void clear(); | 133 void clear(); |
138 | 134 |
139 void setCustomAcceptHeader(); | 135 void setCustomAcceptHeader(); |
140 void createImage(); | 136 void createImage(); |
141 void updateImage(bool allDataReceived); | 137 void updateImage(bool allDataReceived); |
142 void clearImage(); | 138 void clearImage(); |
143 // If not null, changeRect is the changed part of the image. | 139 // If not null, changeRect is the changed part of the image. |
144 void notifyObservers(const IntRect* changeRect = nullptr); | 140 void notifyObservers(const IntRect* changeRect = nullptr); |
145 IntSize svgImageSizeForLayoutObject(const LayoutObject*) const; | |
146 blink::Image* svgImageForLayoutObject(const LayoutObject*); | |
147 bool loadingMultipartContent() const; | 141 bool loadingMultipartContent() const; |
148 | 142 |
149 float m_devicePixelRatioHeaderValue; | 143 float m_devicePixelRatioHeaderValue; |
150 | 144 |
151 typedef HashMap<const ImageResourceClient*, RefPtr<SVGImageForContainer>> Im
ageForContainerMap; | |
152 OwnPtr<ImageForContainerMap> m_imageForContainerMap; | |
153 | |
154 RefPtr<blink::Image> m_image; | 145 RefPtr<blink::Image> m_image; |
155 bool m_hasDevicePixelRatioHeaderValue; | 146 bool m_hasDevicePixelRatioHeaderValue; |
156 }; | 147 }; |
157 | 148 |
158 DEFINE_RESOURCE_TYPE_CASTS(Image); | 149 DEFINE_RESOURCE_TYPE_CASTS(Image); |
159 | 150 |
160 } | 151 } |
161 | 152 |
162 #endif | 153 #endif |
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