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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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23 #ifndef ImageResourceObserver_h | 23 #ifndef ImageResourceObserver_h |
24 #define ImageResourceObserver_h | 24 #define ImageResourceObserver_h |
25 | 25 |
26 #include "core/CoreExport.h" | 26 #include "core/CoreExport.h" |
27 #include "platform/graphics/ImageAnimationPolicy.h" | 27 #include "platform/graphics/ImageAnimationPolicy.h" |
28 #include "platform/network/ResourceLoadPriority.h" | 28 #include "platform/network/ResourceLoadPriority.h" |
29 #include "wtf/Forward.h" | 29 #include "wtf/Forward.h" |
30 | 30 |
31 namespace blink { | 31 namespace blink { |
32 | 32 |
33 class ImageResource; | 33 class ImageResourceContent; |
34 class IntRect; | 34 class IntRect; |
35 | 35 |
36 class CORE_EXPORT ImageResourceObserver { | 36 class CORE_EXPORT ImageResourceObserver { |
37 public: | 37 public: |
38 virtual ~ImageResourceObserver() {} | 38 virtual ~ImageResourceObserver() {} |
39 | 39 |
40 // Called whenever a frame of an image changes, either because we got more | 40 // Called whenever a frame of an image changes, either because we got more |
41 // data from the network or because we are animating. If not null, the IntRect | 41 // data from the network or because we are animating. If not null, the IntRect |
42 // is the changed rect of the image. | 42 // is the changed rect of the image. |
43 virtual void imageChanged(ImageResource*, const IntRect* = 0) {} | 43 virtual void imageChanged(ImageResourceContent*, const IntRect* = 0) {} |
44 | 44 |
45 // Called just after imageChanged() if all image data is received or errored. | 45 // Called just after imageChanged() if all image data is received or errored. |
46 // TODO(hiroshige): Merge imageNotifyFinished() into imageChanged(). | 46 // TODO(hiroshige): Merge imageNotifyFinished() into imageChanged(). |
47 virtual void imageNotifyFinished(ImageResource*) {} | 47 virtual void imageNotifyFinished(ImageResourceContent*) {} |
48 | 48 |
49 // Called to find out if this client wants to actually display the image. Used | 49 // Called to find out if this client wants to actually display the image. Used |
50 // to tell when we can halt animation. Content nodes that hold image refs for | 50 // to tell when we can halt animation. Content nodes that hold image refs for |
51 // example would not render the image, but LayoutImages would (assuming they | 51 // example would not render the image, but LayoutImages would (assuming they |
52 // have visibility: visible and their layout tree isn't hidden e.g., in the | 52 // have visibility: visible and their layout tree isn't hidden e.g., in the |
53 // b/f cache or in a background tab). | 53 // b/f cache or in a background tab). |
54 // | 54 // |
55 // An implementation of this method is not allowed to add or remove | 55 // An implementation of this method is not allowed to add or remove |
56 // ImageResource observers. | 56 // ImageResource observers. |
57 virtual bool willRenderImage() { return false; } | 57 virtual bool willRenderImage() { return false; } |
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68 | 68 |
69 // Name for debugging, e.g. shown in memory-infra. | 69 // Name for debugging, e.g. shown in memory-infra. |
70 virtual String debugName() const = 0; | 70 virtual String debugName() const = 0; |
71 | 71 |
72 static bool isExpectedType(ImageResourceObserver*) { return true; } | 72 static bool isExpectedType(ImageResourceObserver*) { return true; } |
73 }; | 73 }; |
74 | 74 |
75 } // namespace blink | 75 } // namespace blink |
76 | 76 |
77 #endif | 77 #endif |
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