blob: a4ee4f94f55e5e4e04d0d35787d979a7bed2659c [file] [log] [blame]
/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
* Copyright (C) 2019 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ScrollingTreeOverflowScrollProxyNode.h"
#if ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)
#include "Logging.h"
#include "NicosiaPlatformLayer.h"
#include "ScrollingStateOverflowScrollProxyNode.h"
#include "ScrollingStateTree.h"
#include "ScrollingTree.h"
#include "ScrollingTreeOverflowScrollingNode.h"
#include <wtf/text/TextStream.h>
namespace WebCore {
Ref<ScrollingTreeOverflowScrollProxyNode> ScrollingTreeOverflowScrollProxyNode::create(ScrollingTree& scrollingTree, ScrollingNodeID nodeID)
{
return adoptRef(*new ScrollingTreeOverflowScrollProxyNode(scrollingTree, nodeID));
}
ScrollingTreeOverflowScrollProxyNode::ScrollingTreeOverflowScrollProxyNode(ScrollingTree& scrollingTree, ScrollingNodeID nodeID)
: ScrollingTreeNode(scrollingTree, ScrollingNodeType::OverflowProxy, nodeID)
{
}
ScrollingTreeOverflowScrollProxyNode::~ScrollingTreeOverflowScrollProxyNode() = default;
void ScrollingTreeOverflowScrollProxyNode::commitStateBeforeChildren(const ScrollingStateNode& stateNode)
{
const ScrollingStateOverflowScrollProxyNode& overflowProxyStateNode = downcast<ScrollingStateOverflowScrollProxyNode>(stateNode);
if (overflowProxyStateNode.hasChangedProperty(ScrollingStateNode::Property::Layer)) {
auto* layer = static_cast<Nicosia::PlatformLayer*>(stateNode.layer());
m_layer = downcast<Nicosia::CompositionLayer>(layer);
}
if (overflowProxyStateNode.hasChangedProperty(ScrollingStateNode::Property::OverflowScrollingNode))
m_overflowScrollingNodeID = overflowProxyStateNode.overflowScrollingNode();
if (m_overflowScrollingNodeID) {
scrollingTree().overflowRelatedNodes().ensure(m_overflowScrollingNodeID,
[] {
return Vector<ScrollingNodeID>();
}).iterator->value.append(scrollingNodeID());
scrollingTree().activeOverflowScrollProxyNodes().add(*this);
}
}
void ScrollingTreeOverflowScrollProxyNode::applyLayerPositions()
{
FloatPoint scrollOffset;
if (auto* node = scrollingTree().nodeForID(m_overflowScrollingNodeID)) {
if (is<ScrollingTreeOverflowScrollingNode>(node)) {
auto& overflowNode = downcast<ScrollingTreeOverflowScrollingNode>(*node);
scrollOffset = overflowNode.currentScrollOffset();
}
}
LOG_WITH_STREAM(Scrolling, stream << "ScrollingTreeOverflowScrollProxyNode " << scrollingNodeID() << " applyLayerPositions: setting bounds origin to " << scrollOffset);
m_layer->updateState(
[&scrollOffset](Nicosia::CompositionLayer::LayerState& state)
{
state.boundsOrigin = scrollOffset;
state.delta.boundsOriginChanged = true;
});
}
void ScrollingTreeOverflowScrollProxyNode::dumpProperties(TextStream& ts, OptionSet<ScrollingStateTreeAsTextBehavior> behavior) const
{
ts << "overflow scroll proxy node";
ScrollingTreeNode::dumpProperties(ts, behavior);
if (auto* relatedOverflowNode = scrollingTree().nodeForID(m_overflowScrollingNodeID)) {
auto scrollPosition = downcast<ScrollingTreeOverflowScrollingNode>(*relatedOverflowNode).currentScrollPosition();
ts.dumpProperty("related overflow scrolling node scroll position", scrollPosition);
}
if (behavior & ScrollingStateTreeAsTextBehavior::IncludeNodeIDs)
ts.dumpProperty("overflow scrolling node", m_overflowScrollingNodeID);
}
} // namespace WebCore
#endif // ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)