Source/core/page/scrolling/ScrollingCoordinator.h - Issue 18187004: Don't update graphics layer positions during coordinated scrolling

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Issue 18187004: Don't update graphics layer positions during coordinated scrolling (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Set define in core.gyp Created 7 years, 5 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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83 enum MainThreadScrollingReasonFlags {	83 enum MainThreadScrollingReasonFlags {

84 HasSlowRepaintObjects = 1 << 0,	84 HasSlowRepaintObjects = 1 << 0,

85 HasViewportConstrainedObjectsWithoutSupportingFixedLayers = 1 << 1,	85 HasViewportConstrainedObjectsWithoutSupportingFixedLayers = 1 << 1,

86 HasNonLayerViewportConstrainedObjects = 1 << 2,	86 HasNonLayerViewportConstrainedObjects = 1 << 2,

87 };	87 };

88	88

89 MainThreadScrollingReasons mainThreadScrollingReasons() const;	89 MainThreadScrollingReasons mainThreadScrollingReasons() const;

90 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread ScrollingReasons() != 0; }	90 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread ScrollingReasons() != 0; }

91	91

92 void willDestroyScrollableArea(ScrollableArea*);	92 void willDestroyScrollableArea(ScrollableArea*);

93 void scrollableAreaScrollLayerDidChange(ScrollableArea*);	93 // Returns true if the coordinator handled this change.

	94 bool scrollableAreaScrollLayerDidChange(ScrollableArea*);

94 void scrollableAreaScrollbarLayerDidChange(ScrollableArea*, ScrollbarOrienta tion);	95 void scrollableAreaScrollbarLayerDidChange(ScrollableArea*, ScrollbarOrienta tion);

95 void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool);	96 void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool);

96 void updateLayerPositionConstraint(RenderLayer*);	97 void updateLayerPositionConstraint(RenderLayer*);

97 void touchEventTargetRectsDidChange(const Document*);	98 void touchEventTargetRectsDidChange(const Document*);

98	99

99 void computeAbsoluteTouchEventTargetRects(const Document*, Vector<IntRect>&) ;	100 void computeAbsoluteTouchEventTargetRects(const Document*, Vector<IntRect>&) ;

100	101

101 static String mainThreadScrollingReasonsAsText(MainThreadScrollingReasons);	102 static String mainThreadScrollingReasonsAsText(MainThreadScrollingReasons);

102 String mainThreadScrollingReasonsAsText() const;	103 String mainThreadScrollingReasonsAsText() const;

103 Region computeShouldHandleScrollGestureOnMainThreadRegion(const Frame*, cons t IntPoint& frameLocation) const;	104 Region computeShouldHandleScrollGestureOnMainThreadRegion(const Frame*, cons t IntPoint& frameLocation) const;

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135	136

136 typedef HashMap<ScrollableArea*, OwnPtr<WebKit::WebScrollbarLayer> > Scrollb arMap;	137 typedef HashMap<ScrollableArea*, OwnPtr<WebKit::WebScrollbarLayer> > Scrollb arMap;

137 ScrollbarMap m_horizontalScrollbars;	138 ScrollbarMap m_horizontalScrollbars;

138 ScrollbarMap m_verticalScrollbars;	139 ScrollbarMap m_verticalScrollbars;

139	140

140 };	141 };

141	142

142 } // namespace WebCore	143 } // namespace WebCore

143	144

144 #endif // ScrollingCoordinator_h	145 #endif // ScrollingCoordinator_h

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