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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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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(ImageResource*) {} |
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 // |
| 55 // An implementation of this method is not allowed to add or remove |
| 56 // ImageResource observers. |
54 virtual bool willRenderImage() { return false; } | 57 virtual bool willRenderImage() { return false; } |
55 | 58 |
56 // Called to get imageAnimation policy from settings | 59 // Called to get imageAnimation policy from settings. An implementation of |
| 60 // this method is not allowed to add or remove ImageResource observers. |
57 virtual bool getImageAnimationPolicy(ImageAnimationPolicy&) { return false; } | 61 virtual bool getImageAnimationPolicy(ImageAnimationPolicy&) { return false; } |
58 | 62 |
| 63 // Return the observer's requested resource priority. An implementation of |
| 64 // this method is not allowed to add or remove ImageResource observers. |
59 virtual ResourcePriority computeResourcePriority() const { | 65 virtual ResourcePriority computeResourcePriority() const { |
60 return ResourcePriority(); | 66 return ResourcePriority(); |
61 } | 67 } |
62 | 68 |
63 // Name for debugging, e.g. shown in memory-infra. | 69 // Name for debugging, e.g. shown in memory-infra. |
64 virtual String debugName() const = 0; | 70 virtual String debugName() const = 0; |
65 | 71 |
66 static bool isExpectedType(ImageResourceObserver*) { return true; } | 72 static bool isExpectedType(ImageResourceObserver*) { return true; } |
67 }; | 73 }; |
68 | 74 |
69 } // namespace blink | 75 } // namespace blink |
70 | 76 |
71 #endif | 77 #endif |
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