1/* 2 * Copyright (C) 2012 Apple Inc. All rights reserved. 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 APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef ScrollingStateScrollingNode_h 27#define ScrollingStateScrollingNode_h 28 29#if ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS) 30 31#include "ScrollTypes.h" 32#include "ScrollingCoordinator.h" 33#include "ScrollingStateNode.h" 34#include <wtf/PassOwnPtr.h> 35 36namespace WebCore { 37 38class ScrollingStateScrollingNode : public ScrollingStateNode { 39public: 40 virtual ~ScrollingStateScrollingNode(); 41 42 enum ChangedProperty { 43 ScrollableAreaSize = NumStateNodeBits, 44 TotalContentsSize, 45 ReachableContentsSize, 46 ScrollPosition, 47 ScrollOrigin, 48 ScrollableAreaParams, 49 RequestedScrollPosition, 50 NumScrollingStateNodeBits, 51 }; 52 53 const FloatSize& scrollableAreaSize() const { return m_scrollableAreaSize; } 54 void setScrollableAreaSize(const FloatSize&); 55 56 const FloatSize& totalContentsSize() const { return m_totalContentsSize; } 57 void setTotalContentsSize(const FloatSize&); 58 59 const FloatSize& reachableContentsSize() const { return m_reachableContentsSize; } 60 void setReachableContentsSize(const FloatSize&); 61 62 const FloatPoint& scrollPosition() const { return m_scrollPosition; } 63 void setScrollPosition(const FloatPoint&); 64 65 const IntPoint& scrollOrigin() const { return m_scrollOrigin; } 66 void setScrollOrigin(const IntPoint&); 67 68 const ScrollableAreaParameters& scrollableAreaParameters() const { return m_scrollableAreaParameters; } 69 void setScrollableAreaParameters(const ScrollableAreaParameters& params); 70 71 const FloatPoint& requestedScrollPosition() const { return m_requestedScrollPosition; } 72 bool requestedScrollPositionRepresentsProgrammaticScroll() const { return m_requestedScrollPositionRepresentsProgrammaticScroll; } 73 void setRequestedScrollPosition(const FloatPoint&, bool representsProgrammaticScroll); 74 75 virtual void dumpProperties(TextStream&, int indent) const override; 76 77protected: 78 ScrollingStateScrollingNode(ScrollingStateTree&, ScrollingNodeType, ScrollingNodeID); 79 ScrollingStateScrollingNode(const ScrollingStateScrollingNode&, ScrollingStateTree&); 80 81private: 82 FloatSize m_scrollableAreaSize; 83 FloatSize m_totalContentsSize; 84 FloatSize m_reachableContentsSize; 85 FloatPoint m_scrollPosition; 86 FloatPoint m_requestedScrollPosition; 87 IntPoint m_scrollOrigin; 88 ScrollableAreaParameters m_scrollableAreaParameters; 89 bool m_requestedScrollPositionRepresentsProgrammaticScroll; 90}; 91 92SCROLLING_STATE_NODE_TYPE_CASTS(ScrollingStateScrollingNode, isScrollingNode()); 93 94} // namespace WebCore 95 96#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS) 97 98#endif // ScrollingStateScrollingNode_h 99