1/* 2 * Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies). 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef ScrollingCoordinatorCoordinatedGraphics_h 27#define ScrollingCoordinatorCoordinatedGraphics_h 28 29#if USE(COORDINATED_GRAPHICS) 30 31#include "ScrollingCoordinator.h" 32 33namespace WebCore { 34 35class ScrollingStateTree; 36 37class ScrollingCoordinatorCoordinatedGraphics : public ScrollingCoordinator { 38public: 39 explicit ScrollingCoordinatorCoordinatedGraphics(Page*); 40 virtual ~ScrollingCoordinatorCoordinatedGraphics(); 41 42 virtual bool supportsFixedPositionLayers() const OVERRIDE { return true; } 43 44 virtual ScrollingNodeID attachToStateTree(ScrollingNodeType, ScrollingNodeID newNodeID, ScrollingNodeID parentID) OVERRIDE; 45 virtual void detachFromStateTree(ScrollingNodeID) OVERRIDE; 46 virtual void clearStateTree() OVERRIDE; 47 48 virtual void updateViewportConstrainedNode(ScrollingNodeID, const ViewportConstraints&, GraphicsLayer*) OVERRIDE; 49 50 virtual void scrollableAreaScrollLayerDidChange(ScrollableArea*) OVERRIDE; 51 virtual void willDestroyScrollableArea(ScrollableArea*) OVERRIDE; 52 53private: 54 OwnPtr<ScrollingStateTree> m_scrollingStateTree; 55}; 56 57} // namespace WebCore 58 59#endif // USE(COORDINATED_GRAPHICS) 60 61#endif // ScrollingCoordinatorCoordinatedGraphics_h 62