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#include "config.h" 27#include "ScrollingStateStickyNode.h" 28 29#if ENABLE(THREADED_SCROLLING) || USE(COORDINATED_GRAPHICS) 30 31#include "GraphicsLayer.h" 32#include "ScrollingStateTree.h" 33#include "TextStream.h" 34#include <wtf/OwnPtr.h> 35 36namespace WebCore { 37 38PassOwnPtr<ScrollingStateStickyNode> ScrollingStateStickyNode::create(ScrollingStateTree* stateTree, ScrollingNodeID nodeID) 39{ 40 return adoptPtr(new ScrollingStateStickyNode(stateTree, nodeID)); 41} 42 43ScrollingStateStickyNode::ScrollingStateStickyNode(ScrollingStateTree* tree, ScrollingNodeID nodeID) 44 : ScrollingStateNode(tree, nodeID) 45{ 46} 47 48ScrollingStateStickyNode::ScrollingStateStickyNode(const ScrollingStateStickyNode& node) 49 : ScrollingStateNode(node) 50 , m_constraints(StickyPositionViewportConstraints(node.viewportConstraints())) 51{ 52} 53 54ScrollingStateStickyNode::~ScrollingStateStickyNode() 55{ 56} 57 58PassOwnPtr<ScrollingStateNode> ScrollingStateStickyNode::clone() 59{ 60 return adoptPtr(new ScrollingStateStickyNode(*this)); 61} 62 63void ScrollingStateStickyNode::updateConstraints(const StickyPositionViewportConstraints& constraints) 64{ 65 if (m_constraints == constraints) 66 return; 67 68 m_constraints = constraints; 69 setPropertyChanged(ViewportConstraints); 70 m_scrollingStateTree->setHasChangedProperties(true); 71} 72 73void ScrollingStateStickyNode::syncLayerPositionForViewportRect(const LayoutRect& viewportRect) 74{ 75 FloatPoint position = m_constraints.layerPositionForViewportRect(viewportRect); 76 graphicsLayer()->syncPosition(position); 77} 78 79void ScrollingStateStickyNode::dumpProperties(TextStream& ts, int indent) const 80{ 81 ts << "(" << "Sticky node" << "\n"; 82 83 if (m_constraints.anchorEdges()) { 84 writeIndent(ts, indent + 1); 85 ts << "(anchor edges: "; 86 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeLeft)) 87 ts << "AnchorEdgeLeft "; 88 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeRight)) 89 ts << "AnchorEdgeRight "; 90 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeTop)) 91 ts << "AnchorEdgeTop "; 92 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeBottom)) 93 ts << "AnchorEdgeBottom"; 94 ts << ")\n"; 95 } 96 97 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeLeft)) { 98 writeIndent(ts, indent + 1); 99 ts << "(left offset " << m_constraints.leftOffset() << ")\n"; 100 } 101 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeRight)) { 102 writeIndent(ts, indent + 1); 103 ts << "(right offset " << m_constraints.rightOffset() << ")\n"; 104 } 105 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeTop)) { 106 writeIndent(ts, indent + 1); 107 ts << "(top offset " << m_constraints.topOffset() << ")\n"; 108 } 109 if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeBottom)) { 110 writeIndent(ts, indent + 1); 111 ts << "(bottom offset " << m_constraints.bottomOffset() << ")\n"; 112 } 113 114 writeIndent(ts, indent + 1); 115 FloatRect r = m_constraints.absoluteContainingBlockRect(); 116 ts << "(containing block rect " << r.x() << ", " << r.y() << " " << r.width() << " x " << r.height() << ")\n"; 117 118 writeIndent(ts, indent + 1); 119 r = m_constraints.absoluteStickyBoxRect(); 120 ts << "(sticky box rect " << r.x() << " " << r.y() << " " << r.width() << " " << r.height() << ")\n"; 121 122 writeIndent(ts, indent + 1); 123 r = m_constraints.absoluteStickyBoxRect(); 124 ts << "(sticky box rect " << r.x() << " " << r.y() << " " << r.width() << " " << r.height() << ")\n"; 125 126 writeIndent(ts, indent + 1); 127 ts << "(sticky offset at last layout " << m_constraints.stickyOffsetAtLastLayout().width() << " " << m_constraints.stickyOffsetAtLastLayout().height() << ")\n"; 128 129 writeIndent(ts, indent + 1); 130 ts << "(layer position at last layout " << m_constraints.layerPositionAtLastLayout().x() << " " << m_constraints.layerPositionAtLastLayout().y() << ")\n"; 131} 132 133} // namespace WebCore 134 135#endif // ENABLE(THREADED_SCROLLING) || USE(COORDINATED_GRAPHICS) 136