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1 /* | 1 /* |
2 * Copyright (c) 2010, Google Inc. All rights reserved. | 2 * Copyright (c) 2010, 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 are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * 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 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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92 | 92 |
93 virtual void didAddVerticalScrollbar(Scrollbar*) { } | 93 virtual void didAddVerticalScrollbar(Scrollbar*) { } |
94 virtual void willRemoveVerticalScrollbar(Scrollbar*) { } | 94 virtual void willRemoveVerticalScrollbar(Scrollbar*) { } |
95 virtual void didAddHorizontalScrollbar(Scrollbar*) { } | 95 virtual void didAddHorizontalScrollbar(Scrollbar*) { } |
96 virtual void willRemoveHorizontalScrollbar(Scrollbar*) { } | 96 virtual void willRemoveHorizontalScrollbar(Scrollbar*) { } |
97 | 97 |
98 virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar*) { return tru
e; } | 98 virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar*) { return tru
e; } |
99 | 99 |
100 virtual void notifyContentAreaScrolled(const FloatSize&) { } | 100 virtual void notifyContentAreaScrolled(const FloatSize&) { } |
101 | 101 |
102 virtual bool isRubberBandInProgress() const { return false; } | |
103 | |
104 protected: | 102 protected: |
105 explicit ScrollAnimator(ScrollableArea*); | 103 explicit ScrollAnimator(ScrollableArea*); |
106 | 104 |
107 virtual void notifyPositionChanged(); | 105 virtual void notifyPositionChanged(); |
108 | 106 |
109 ScrollableArea* m_scrollableArea; | 107 ScrollableArea* m_scrollableArea; |
110 float m_currentPosX; // We avoid using a FloatPoint in order to reduce | 108 float m_currentPosX; // We avoid using a FloatPoint in order to reduce |
111 float m_currentPosY; // subclass code complexity. | 109 float m_currentPosY; // subclass code complexity. |
112 | 110 |
113 private: | 111 private: |
114 float clampScrollPosition(ScrollbarOrientation, float); | 112 float clampScrollPosition(ScrollbarOrientation, float); |
115 }; | 113 }; |
116 | 114 |
117 } // namespace blink | 115 } // namespace blink |
118 | 116 |
119 #endif // ScrollAnimator_h | 117 #endif // ScrollAnimator_h |
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