1/* 2 * Copyright (C) 2014 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#include "config.h" 27#include "ScrollingStateOverflowScrollingNode.h" 28 29#if ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS) 30 31#include "ScrollingStateTree.h" 32#include "TextStream.h" 33#include <wtf/OwnPtr.h> 34 35namespace WebCore { 36 37PassRefPtr<ScrollingStateOverflowScrollingNode> ScrollingStateOverflowScrollingNode::create(ScrollingStateTree& stateTree, ScrollingNodeID nodeID) 38{ 39 return adoptRef(new ScrollingStateOverflowScrollingNode(stateTree, nodeID)); 40} 41 42ScrollingStateOverflowScrollingNode::ScrollingStateOverflowScrollingNode(ScrollingStateTree& stateTree, ScrollingNodeID nodeID) 43 : ScrollingStateScrollingNode(stateTree, OverflowScrollingNode, nodeID) 44{ 45} 46 47ScrollingStateOverflowScrollingNode::ScrollingStateOverflowScrollingNode(const ScrollingStateOverflowScrollingNode& stateNode, ScrollingStateTree& adoptiveTree) 48 : ScrollingStateScrollingNode(stateNode, adoptiveTree) 49{ 50 if (hasChangedProperty(ScrolledContentsLayer)) 51 setScrolledContentsLayer(stateNode.scrolledContentsLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation())); 52} 53 54ScrollingStateOverflowScrollingNode::~ScrollingStateOverflowScrollingNode() 55{ 56} 57 58PassRefPtr<ScrollingStateNode> ScrollingStateOverflowScrollingNode::clone(ScrollingStateTree& adoptiveTree) 59{ 60 return adoptRef(new ScrollingStateOverflowScrollingNode(*this, adoptiveTree)); 61} 62 63void ScrollingStateOverflowScrollingNode::setScrolledContentsLayer(const LayerRepresentation& layerRepresentation) 64{ 65 if (layerRepresentation == m_scrolledContentsLayer) 66 return; 67 68 m_scrolledContentsLayer = layerRepresentation; 69 setPropertyChanged(ScrolledContentsLayer); 70} 71 72void ScrollingStateOverflowScrollingNode::dumpProperties(TextStream& ts, int indent) const 73{ 74 ts << "(" << "Overflow scrolling node" << "\n"; 75 76 ScrollingStateScrollingNode::dumpProperties(ts, indent); 77 78 if (m_scrolledContentsLayer.layerID()) { 79 writeIndent(ts, indent + 1); 80 ts << "(scrolled contents layer " << m_scrolledContentsLayer.layerID() << ")\n"; 81 } 82} 83 84} // namespace WebCore 85 86#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS) 87