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1 /* | 1 /* |
2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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35 public: | 35 public: |
36 // Indicates to the embedder that the compositor is about to begin a | 36 // Indicates to the embedder that the compositor is about to begin a |
37 // frame. This is is a signal to flow control mechanisms that a frame is | 37 // frame. This is is a signal to flow control mechanisms that a frame is |
38 // beginning. This call will be followed by updateAnimations and then | 38 // beginning. This call will be followed by updateAnimations and then |
39 // layout, which should be used for actual animation or tree manipulation | 39 // layout, which should be used for actual animation or tree manipulation |
40 // tasks. FIXME: make pure virtual once upstream deps are satisfied. | 40 // tasks. FIXME: make pure virtual once upstream deps are satisfied. |
41 virtual void willBeginFrame() { } | 41 virtual void willBeginFrame() { } |
42 | 42 |
43 // Updates animation and layout. These are called before the compositing | 43 // Updates animation and layout. These are called before the compositing |
44 // pass so that layers can be updated at the given frame time. | 44 // pass so that layers can be updated at the given frame time. |
45 virtual void updateAnimations(double frameBeginTime) = 0; | 45 virtual void updateAnimations(double monotonicFrameBeginTime) = 0; |
46 virtual void layout() = 0; | 46 virtual void layout() = 0; |
47 | 47 |
48 // Applies a scroll delta to the root layer, which is bundled with a page | 48 // Applies a scroll delta to the root layer, which is bundled with a page |
49 // scale factor that may apply a CSS transform on the whole document (used | 49 // scale factor that may apply a CSS transform on the whole document (used |
50 // for mobile-device pinch zooming). This is triggered by events sent to the | 50 // for mobile-device pinch zooming). This is triggered by events sent to the |
51 // compositor thread through the WebCompositor interface. | 51 // compositor thread through the WebCompositor interface. |
52 virtual void applyScrollAndScale(const WebSize& scrollDelta, float scaleFact
or) = 0; | 52 virtual void applyScrollAndScale(const WebSize& scrollDelta, float scaleFact
or) = 0; |
53 | 53 |
54 // Creates a 3D context suitable for the compositing. This may be called | 54 // Creates a 3D context suitable for the compositing. This may be called |
55 // more than once if the context gets lost. | 55 // more than once if the context gets lost. |
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79 // internally schedule a compositing pass when needed. | 79 // internally schedule a compositing pass when needed. |
80 virtual void scheduleComposite() = 0; | 80 virtual void scheduleComposite() = 0; |
81 | 81 |
82 protected: | 82 protected: |
83 virtual ~WebLayerTreeViewClient() { } | 83 virtual ~WebLayerTreeViewClient() { } |
84 }; | 84 }; |
85 | 85 |
86 } // namespace WebKit | 86 } // namespace WebKit |
87 | 87 |
88 #endif // WebLayerTreeViewClient_h | 88 #endif // WebLayerTreeViewClient_h |
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