Source/core/page/scrolling/ScrollingCoordinator.h - Issue 23903012: Set up scroll and clip parents

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Issue 23903012: Set up scroll and clip parents (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Make WebLayer additions pure virtual. Created 7 years, 3 months ago

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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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94	94

95 void willDestroyScrollableArea(ScrollableArea*);	95 void willDestroyScrollableArea(ScrollableArea*);

96 // Returns true if the coordinator handled this change.	96 // Returns true if the coordinator handled this change.

97 bool scrollableAreaScrollLayerDidChange(ScrollableArea*);	97 bool scrollableAreaScrollLayerDidChange(ScrollableArea*);

98 void scrollableAreaScrollbarLayerDidChange(ScrollableArea*, ScrollbarOrienta tion);	98 void scrollableAreaScrollbarLayerDidChange(ScrollableArea*, ScrollbarOrienta tion);

99 void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool);	99 void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool);

100 void updateLayerPositionConstraint(RenderLayer*);	100 void updateLayerPositionConstraint(RenderLayer*);

101 void touchEventTargetRectsDidChange(const Document*);	101 void touchEventTargetRectsDidChange(const Document*);

102 void willDestroyRenderLayer(RenderLayer*);	102 void willDestroyRenderLayer(RenderLayer*);

103	103

	104 void updateScrollParentForLayer(RenderLayer* child, RenderLayer* parent);

	105 void updateClipParentForLayer(RenderLayer* child, RenderLayer* parent);

	106

104 static String mainThreadScrollingReasonsAsText(MainThreadScrollingReasons);	107 static String mainThreadScrollingReasonsAsText(MainThreadScrollingReasons);

105 String mainThreadScrollingReasonsAsText() const;	108 String mainThreadScrollingReasonsAsText() const;

106 Region computeShouldHandleScrollGestureOnMainThreadRegion(const Frame*, cons t IntPoint& frameLocation) const;	109 Region computeShouldHandleScrollGestureOnMainThreadRegion(const Frame*, cons t IntPoint& frameLocation) const;

107	110

108 protected:	111 protected:

109 explicit ScrollingCoordinator(Page*);	112 explicit ScrollingCoordinator(Page*);

110	113

111 static GraphicsLayer* scrollLayerForScrollableArea(ScrollableArea*);	114 static GraphicsLayer* scrollLayerForScrollableArea(ScrollableArea*);

112 static GraphicsLayer* horizontalScrollbarLayerForScrollableArea(ScrollableAr ea*);	115 static GraphicsLayer* horizontalScrollbarLayerForScrollableArea(ScrollableAr ea*);

113 static GraphicsLayer* verticalScrollbarLayerForScrollableArea(ScrollableArea *);	116 static GraphicsLayer* verticalScrollbarLayerForScrollableArea(ScrollableArea *);

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141	144

142 typedef HashMap<ScrollableArea*, OwnPtr<WebKit::WebScrollbarLayer> > Scrollb arMap;	145 typedef HashMap<ScrollableArea*, OwnPtr<WebKit::WebScrollbarLayer> > Scrollb arMap;

143 ScrollbarMap m_horizontalScrollbars;	146 ScrollbarMap m_horizontalScrollbars;

144 ScrollbarMap m_verticalScrollbars;	147 ScrollbarMap m_verticalScrollbars;

145 HashSet<const RenderLayer*> m_layersWithTouchRects;	148 HashSet<const RenderLayer*> m_layersWithTouchRects;

146 };	149 };

147	150

148 } // namespace WebCore	151 } // namespace WebCore

149	152

150 #endif // ScrollingCoordinator_h	153 #endif // ScrollingCoordinator_h

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