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1 /* | 1 /* |
2 * Copyright (C) 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2011 Apple 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 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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91 void frameViewRootLayerDidChange(FrameView*); | 91 void frameViewRootLayerDidChange(FrameView*); |
92 | 92 |
93 #if OS(MACOSX) | 93 #if OS(MACOSX) |
94 // Dispatched by the scrolling tree during handleWheelEvent. This is require
d as long as scrollbars are painted on the main thread. | 94 // Dispatched by the scrolling tree during handleWheelEvent. This is require
d as long as scrollbars are painted on the main thread. |
95 void handleWheelEventPhase(PlatformWheelEventPhase); | 95 void handleWheelEventPhase(PlatformWheelEventPhase); |
96 #endif | 96 #endif |
97 | 97 |
98 enum MainThreadScrollingReasonFlags { | 98 enum MainThreadScrollingReasonFlags { |
99 HasBackgroundAttachmentFixedObjects = 1 << 0, | 99 HasBackgroundAttachmentFixedObjects = 1 << 0, |
100 HasNonLayerViewportConstrainedObjects = 1 << 1, | 100 HasNonLayerViewportConstrainedObjects = 1 << 1, |
101 ThreadedScrollingDisabled = 1 << 2 | 101 HasStickyPositionObjects = 1 << 2, |
| 102 ThreadedScrollingDisabled = 1 << 3 |
102 }; | 103 }; |
103 | 104 |
104 MainThreadScrollingReasons mainThreadScrollingReasons() const; | 105 MainThreadScrollingReasons mainThreadScrollingReasons() const; |
105 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread
ScrollingReasons() != 0; } | 106 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread
ScrollingReasons() != 0; } |
106 | 107 |
107 PassOwnPtr<WebScrollbarLayer> createSolidColorScrollbarLayer(ScrollbarOrient
ation, int thumbThickness, int trackStart, bool isLeftSideVerticalScrollbar); | 108 PassOwnPtr<WebScrollbarLayer> createSolidColorScrollbarLayer(ScrollbarOrient
ation, int thumbThickness, int trackStart, bool isLeftSideVerticalScrollbar); |
108 | 109 |
109 void willDestroyScrollableArea(ScrollableArea*); | 110 void willDestroyScrollableArea(ScrollableArea*); |
110 // Returns true if the coordinator handled this change. | 111 // Returns true if the coordinator handled this change. |
111 bool scrollableAreaScrollLayerDidChange(ScrollableArea*); | 112 bool scrollableAreaScrollLayerDidChange(ScrollableArea*); |
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166 ScrollbarMap m_verticalScrollbars; | 167 ScrollbarMap m_verticalScrollbars; |
167 HashSet<const PaintLayer*> m_layersWithTouchRects; | 168 HashSet<const PaintLayer*> m_layersWithTouchRects; |
168 bool m_wasFrameScrollable; | 169 bool m_wasFrameScrollable; |
169 | 170 |
170 MainThreadScrollingReasons m_lastMainThreadScrollingReasons; | 171 MainThreadScrollingReasons m_lastMainThreadScrollingReasons; |
171 }; | 172 }; |
172 | 173 |
173 } // namespace blink | 174 } // namespace blink |
174 | 175 |
175 #endif // ScrollingCoordinator_h | 176 #endif // ScrollingCoordinator_h |
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