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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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| 88 | 88 |
| 89 enum MainThreadScrollingReasonFlags { | 89 enum MainThreadScrollingReasonFlags { |
| 90 HasSlowRepaintObjects = 1 << 0, | 90 HasSlowRepaintObjects = 1 << 0, |
| 91 HasNonLayerViewportConstrainedObjects = 1 << 1, | 91 HasNonLayerViewportConstrainedObjects = 1 << 1, |
| 92 ThreadedScrollingDisabled = 1 << 2 | 92 ThreadedScrollingDisabled = 1 << 2 |
| 93 }; | 93 }; |
| 94 | 94 |
| 95 MainThreadScrollingReasons mainThreadScrollingReasons() const; | 95 MainThreadScrollingReasons mainThreadScrollingReasons() const; |
| 96 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread
ScrollingReasons() != 0; } | 96 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread
ScrollingReasons() != 0; } |
| 97 | 97 |
| 98 PassOwnPtr<blink::WebScrollbarLayer> createSolidColorScrollbarLayer(Scrollba
rOrientation, int thumbThickness, int trackStart, bool isLeftSideVerticalScrollb
ar); | 98 PassOwnPtr<WebScrollbarLayer> createSolidColorScrollbarLayer(ScrollbarOrient
ation, int thumbThickness, int trackStart, bool isLeftSideVerticalScrollbar); |
| 99 | 99 |
| 100 void willDestroyScrollableArea(ScrollableArea*); | 100 void willDestroyScrollableArea(ScrollableArea*); |
| 101 // Returns true if the coordinator handled this change. | 101 // Returns true if the coordinator handled this change. |
| 102 bool scrollableAreaScrollLayerDidChange(ScrollableArea*); | 102 bool scrollableAreaScrollLayerDidChange(ScrollableArea*); |
| 103 void scrollableAreaScrollbarLayerDidChange(ScrollableArea*, ScrollbarOrienta
tion); | 103 void scrollableAreaScrollbarLayerDidChange(ScrollableArea*, ScrollbarOrienta
tion); |
| 104 void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool); | 104 void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool); |
| 105 void updateLayerPositionConstraint(DeprecatedPaintLayer*); | 105 void updateLayerPositionConstraint(DeprecatedPaintLayer*); |
| 106 void touchEventTargetRectsDidChange(); | 106 void touchEventTargetRectsDidChange(); |
| 107 void willDestroyLayer(DeprecatedPaintLayer*); | 107 void willDestroyLayer(DeprecatedPaintLayer*); |
| 108 | 108 |
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| 137 bool shouldUpdateAfterCompositingChange() const { return m_scrollGestureRegi
onIsDirty || m_touchEventTargetRectsAreDirty || m_shouldScrollOnMainThreadDirty
|| frameViewIsDirty(); } | 137 bool shouldUpdateAfterCompositingChange() const { return m_scrollGestureRegi
onIsDirty || m_touchEventTargetRectsAreDirty || m_shouldScrollOnMainThreadDirty
|| frameViewIsDirty(); } |
| 138 | 138 |
| 139 void setShouldUpdateScrollLayerPositionOnMainThread(MainThreadScrollingReaso
ns); | 139 void setShouldUpdateScrollLayerPositionOnMainThread(MainThreadScrollingReaso
ns); |
| 140 | 140 |
| 141 bool hasVisibleSlowRepaintViewportConstrainedObjects(FrameView*) const; | 141 bool hasVisibleSlowRepaintViewportConstrainedObjects(FrameView*) const; |
| 142 | 142 |
| 143 void setShouldHandleScrollGestureOnMainThreadRegion(const Region&); | 143 void setShouldHandleScrollGestureOnMainThreadRegion(const Region&); |
| 144 void setTouchEventTargetRects(LayerHitTestRects&); | 144 void setTouchEventTargetRects(LayerHitTestRects&); |
| 145 void computeTouchEventTargetRects(LayerHitTestRects&); | 145 void computeTouchEventTargetRects(LayerHitTestRects&); |
| 146 | 146 |
| 147 blink::WebScrollbarLayer* addWebScrollbarLayer(ScrollableArea*, ScrollbarOri
entation, PassOwnPtr<blink::WebScrollbarLayer>); | 147 WebScrollbarLayer* addWebScrollbarLayer(ScrollableArea*, ScrollbarOrientatio
n, PassOwnPtr<WebScrollbarLayer>); |
| 148 blink::WebScrollbarLayer* getWebScrollbarLayer(ScrollableArea*, ScrollbarOri
entation); | 148 WebScrollbarLayer* getWebScrollbarLayer(ScrollableArea*, ScrollbarOrientatio
n); |
| 149 void removeWebScrollbarLayer(ScrollableArea*, ScrollbarOrientation); | 149 void removeWebScrollbarLayer(ScrollableArea*, ScrollbarOrientation); |
| 150 | 150 |
| 151 bool frameViewIsDirty() const; | 151 bool frameViewIsDirty() const; |
| 152 | 152 |
| 153 using ScrollbarMap = HashMap<ScrollableArea*, OwnPtr<blink::WebScrollbarLaye
r>>; | 153 using ScrollbarMap = HashMap<ScrollableArea*, OwnPtr<WebScrollbarLayer>>; |
| 154 ScrollbarMap m_horizontalScrollbars; | 154 ScrollbarMap m_horizontalScrollbars; |
| 155 ScrollbarMap m_verticalScrollbars; | 155 ScrollbarMap m_verticalScrollbars; |
| 156 HashSet<const DeprecatedPaintLayer*> m_layersWithTouchRects; | 156 HashSet<const DeprecatedPaintLayer*> m_layersWithTouchRects; |
| 157 bool m_wasFrameScrollable; | 157 bool m_wasFrameScrollable; |
| 158 | 158 |
| 159 MainThreadScrollingReasons m_lastMainThreadScrollingReasons; | 159 MainThreadScrollingReasons m_lastMainThreadScrollingReasons; |
| 160 }; | 160 }; |
| 161 | 161 |
| 162 } // namespace blink | 162 } // namespace blink |
| 163 | 163 |
| 164 #endif // ScrollingCoordinator_h | 164 #endif // ScrollingCoordinator_h |
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