/* * Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef ScrollingCoordinatorCoordinatedGraphics_h #define ScrollingCoordinatorCoordinatedGraphics_h #if USE(COORDINATED_GRAPHICS) #include "ScrollingCoordinator.h" namespace WebCore { class ScrollingStateTree; class ScrollingCoordinatorCoordinatedGraphics : public ScrollingCoordinator { public: explicit ScrollingCoordinatorCoordinatedGraphics(Page*); virtual ~ScrollingCoordinatorCoordinatedGraphics(); virtual bool supportsFixedPositionLayers() const override { return true; } virtual ScrollingNodeID attachToStateTree(ScrollingNodeType, ScrollingNodeID newNodeID, ScrollingNodeID parentID) override; virtual void detachFromStateTree(ScrollingNodeID) override; virtual void clearStateTree() override; virtual void updateViewportConstrainedNode(ScrollingNodeID, const ViewportConstraints&, GraphicsLayer*) override; virtual void scrollableAreaScrollLayerDidChange(ScrollableArea&) override; virtual void willDestroyScrollableArea(ScrollableArea&) override; virtual bool requestScrollPositionUpdate(FrameView&, const IntPoint&) override; private: std::unique_ptr<ScrollingStateTree> m_scrollingStateTree; }; } // namespace WebCore #endif // USE(COORDINATED_GRAPHICS) #endif // ScrollingCoordinatorCoordinatedGraphics_h