1/*
2 * Copyright (C) 2019 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 "ScrollingStatePositionedNode.h"
28
29#include "GraphicsLayer.h"
30#include "Logging.h"
31#include "ScrollingStateTree.h"
32#include <wtf/text/TextStream.h>
33
34#if ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
35
36namespace WebCore {
37
38Ref<ScrollingStatePositionedNode> ScrollingStatePositionedNode::create(ScrollingStateTree& stateTree, ScrollingNodeID nodeID)
39{
40 return adoptRef(*new ScrollingStatePositionedNode(stateTree, nodeID));
41}
42
43ScrollingStatePositionedNode::ScrollingStatePositionedNode(ScrollingStateTree& tree, ScrollingNodeID nodeID)
44 : ScrollingStateNode(ScrollingNodeType::Positioned, tree, nodeID)
45{
46}
47
48ScrollingStatePositionedNode::ScrollingStatePositionedNode(const ScrollingStatePositionedNode& node, ScrollingStateTree& adoptiveTree)
49 : ScrollingStateNode(node, adoptiveTree)
50 , m_relatedOverflowScrollingNodes(node.relatedOverflowScrollingNodes())
51 , m_constraints(node.layoutConstraints())
52{
53}
54
55ScrollingStatePositionedNode::~ScrollingStatePositionedNode() = default;
56
57Ref<ScrollingStateNode> ScrollingStatePositionedNode::clone(ScrollingStateTree& adoptiveTree)
58{
59 return adoptRef(*new ScrollingStatePositionedNode(*this, adoptiveTree));
60}
61
62void ScrollingStatePositionedNode::setAllPropertiesChanged()
63{
64 setPropertyChangedBit(RelatedOverflowScrollingNodes);
65 setPropertyChangedBit(LayoutConstraintData);
66 ScrollingStateNode::setAllPropertiesChanged();
67}
68
69void ScrollingStatePositionedNode::setRelatedOverflowScrollingNodes(Vector<ScrollingNodeID>&& nodes)
70{
71 if (nodes == m_relatedOverflowScrollingNodes)
72 return;
73
74 m_relatedOverflowScrollingNodes = WTFMove(nodes);
75 setPropertyChanged(RelatedOverflowScrollingNodes);
76}
77
78void ScrollingStatePositionedNode::updateConstraints(const LayoutConstraints& constraints)
79{
80 if (m_constraints == constraints)
81 return;
82
83 LOG_WITH_STREAM(Scrolling, stream << "ScrollingStatePositionedNode " << scrollingNodeID() << " updateConstraints " << constraints);
84
85 m_constraints = constraints;
86 setPropertyChanged(LayoutConstraintData);
87}
88
89void ScrollingStatePositionedNode::dumpProperties(TextStream& ts, ScrollingStateTreeAsTextBehavior behavior) const
90{
91 ts << "Positioned node";
92 ScrollingStateNode::dumpProperties(ts, behavior);
93
94 ts.dumpProperty("layout constraints", m_constraints);
95 ts.dumpProperty("related overflow nodes", m_relatedOverflowScrollingNodes.size());
96
97 if (behavior & ScrollingStateTreeAsTextBehaviorIncludeNodeIDs) {
98 if (!m_relatedOverflowScrollingNodes.isEmpty()) {
99 TextStream::GroupScope scope(ts);
100 ts << "overflow nodes";
101 for (auto nodeID : m_relatedOverflowScrollingNodes)
102 ts << "\n" << indent << "nodeID " << nodeID;
103 }
104 }
105}
106
107} // namespace WebCore
108
109#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
110