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 "ScrollingTreeFrameHostingNode.h"
28
29#if ENABLE(ASYNC_SCROLLING)
30
31#include "Logging.h"
32#include "ScrollingStateFrameHostingNode.h"
33#include "ScrollingStateTree.h"
34#include "ScrollingTree.h"
35#include <wtf/text/TextStream.h>
36
37namespace WebCore {
38
39Ref<ScrollingTreeFrameHostingNode> ScrollingTreeFrameHostingNode::create(ScrollingTree& scrollingTree, ScrollingNodeID nodeID)
40{
41 return adoptRef(*new ScrollingTreeFrameHostingNode(scrollingTree, nodeID));
42}
43
44ScrollingTreeFrameHostingNode::ScrollingTreeFrameHostingNode(ScrollingTree& scrollingTree, ScrollingNodeID nodeID)
45 : ScrollingTreeNode(scrollingTree, ScrollingNodeType::FrameHosting, nodeID)
46{
47 ASSERT(isFrameHostingNode());
48}
49
50ScrollingTreeFrameHostingNode::~ScrollingTreeFrameHostingNode() = default;
51
52void ScrollingTreeFrameHostingNode::commitStateBeforeChildren(const ScrollingStateNode& stateNode)
53{
54 const ScrollingStateFrameHostingNode& frameHostingStateNode = downcast<ScrollingStateFrameHostingNode>(stateNode);
55
56 if (frameHostingStateNode.hasChangedProperty(ScrollingStateFrameHostingNode::ParentRelativeScrollableRect))
57 m_parentRelativeScrollableRect = frameHostingStateNode.parentRelativeScrollableRect();
58}
59
60void ScrollingTreeFrameHostingNode::applyLayerPositions(const FloatRect&, FloatSize&)
61{
62}
63
64LayoutPoint ScrollingTreeFrameHostingNode::parentToLocalPoint(LayoutPoint point) const
65{
66 return point - toLayoutSize(parentRelativeScrollableRect().location());
67}
68
69void ScrollingTreeFrameHostingNode::dumpProperties(TextStream& ts, ScrollingStateTreeAsTextBehavior behavior) const
70{
71 ts << "frame hosting node";
72 ScrollingTreeNode::dumpProperties(ts, behavior);
73
74 if (!m_parentRelativeScrollableRect.isEmpty())
75 ts.dumpProperty("parent relative scrollable rect", m_parentRelativeScrollableRect);
76}
77
78} // namespace WebCore
79
80#endif // ENABLE(ASYNC_SCROLLING)
81