136 lines
5.5 KiB
C++
136 lines
5.5 KiB
C++
/*
|
|
* Copyright (C) 2012 Apple Inc. All rights reserved.
|
|
*
|
|
* 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 "ScrollingStateFixedNode.h"
|
|
|
|
#include "GraphicsLayer.h"
|
|
#include "Logging.h"
|
|
#include "ScrollingStateTree.h"
|
|
#include <wtf/text/TextStream.h>
|
|
|
|
#if ENABLE(ASYNC_SCROLLING)
|
|
|
|
namespace WebCore {
|
|
|
|
Ref<ScrollingStateFixedNode> ScrollingStateFixedNode::create(ScrollingStateTree& stateTree, ScrollingNodeID nodeID)
|
|
{
|
|
return adoptRef(*new ScrollingStateFixedNode(stateTree, nodeID));
|
|
}
|
|
|
|
ScrollingStateFixedNode::ScrollingStateFixedNode(ScrollingStateTree& tree, ScrollingNodeID nodeID)
|
|
: ScrollingStateNode(ScrollingNodeType::Fixed, tree, nodeID)
|
|
{
|
|
}
|
|
|
|
ScrollingStateFixedNode::ScrollingStateFixedNode(const ScrollingStateFixedNode& node, ScrollingStateTree& adoptiveTree)
|
|
: ScrollingStateNode(node, adoptiveTree)
|
|
, m_constraints(FixedPositionViewportConstraints(node.viewportConstraints()))
|
|
{
|
|
}
|
|
|
|
ScrollingStateFixedNode::~ScrollingStateFixedNode() = default;
|
|
|
|
Ref<ScrollingStateNode> ScrollingStateFixedNode::clone(ScrollingStateTree& adoptiveTree)
|
|
{
|
|
return adoptRef(*new ScrollingStateFixedNode(*this, adoptiveTree));
|
|
}
|
|
|
|
OptionSet<ScrollingStateNode::Property> ScrollingStateFixedNode::applicableProperties() const
|
|
{
|
|
constexpr OptionSet<Property> nodeProperties = { Property::ViewportConstraints };
|
|
|
|
auto properties = ScrollingStateNode::applicableProperties();
|
|
properties.add(nodeProperties);
|
|
return properties;
|
|
}
|
|
|
|
void ScrollingStateFixedNode::updateConstraints(const FixedPositionViewportConstraints& constraints)
|
|
{
|
|
if (m_constraints == constraints)
|
|
return;
|
|
|
|
LOG_WITH_STREAM(Scrolling, stream << "ScrollingStateFixedNode " << scrollingNodeID() << " updateConstraints with viewport rect " << constraints.viewportRectAtLastLayout() << " layer pos at last layout " << constraints.layerPositionAtLastLayout() << " offset from top " << (constraints.layerPositionAtLastLayout().y() - constraints.viewportRectAtLastLayout().y()));
|
|
|
|
m_constraints = constraints;
|
|
setPropertyChanged(Property::ViewportConstraints);
|
|
}
|
|
|
|
void ScrollingStateFixedNode::reconcileLayerPositionForViewportRect(const LayoutRect& viewportRect, ScrollingLayerPositionAction action)
|
|
{
|
|
FloatPoint position = m_constraints.layerPositionForViewportRect(viewportRect);
|
|
if (layer().representsGraphicsLayer()) {
|
|
auto* graphicsLayer = static_cast<GraphicsLayer*>(layer());
|
|
|
|
LOG_WITH_STREAM(Scrolling, stream << "ScrollingStateFixedNode " << scrollingNodeID() <<" reconcileLayerPositionForViewportRect " << action << " position of layer " << graphicsLayer->primaryLayerID() << " to " << position);
|
|
|
|
switch (action) {
|
|
case ScrollingLayerPositionAction::Set:
|
|
graphicsLayer->setPosition(position);
|
|
break;
|
|
|
|
case ScrollingLayerPositionAction::SetApproximate:
|
|
graphicsLayer->setApproximatePosition(position);
|
|
break;
|
|
|
|
case ScrollingLayerPositionAction::Sync:
|
|
graphicsLayer->syncPosition(position);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ScrollingStateFixedNode::dumpProperties(TextStream& ts, ScrollingStateTreeAsTextBehavior behavior) const
|
|
{
|
|
ts << "Fixed node";
|
|
ScrollingStateNode::dumpProperties(ts, behavior);
|
|
|
|
if (m_constraints.anchorEdges()) {
|
|
TextStream::GroupScope scope(ts);
|
|
ts << "anchor edges: ";
|
|
if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeLeft))
|
|
ts << "AnchorEdgeLeft ";
|
|
if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeRight))
|
|
ts << "AnchorEdgeRight ";
|
|
if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeTop))
|
|
ts << "AnchorEdgeTop";
|
|
if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeBottom))
|
|
ts << "AnchorEdgeBottom";
|
|
}
|
|
|
|
if (!m_constraints.alignmentOffset().isEmpty())
|
|
ts.dumpProperty("alignment offset", m_constraints.alignmentOffset());
|
|
|
|
if (!m_constraints.viewportRectAtLastLayout().isEmpty())
|
|
ts.dumpProperty("viewport rect at last layout", m_constraints.viewportRectAtLastLayout());
|
|
|
|
if (m_constraints.layerPositionAtLastLayout() != FloatPoint())
|
|
ts.dumpProperty("layer position at last layout", m_constraints.layerPositionAtLastLayout());
|
|
}
|
|
|
|
} // namespace WebCore
|
|
|
|
#endif // ENABLE(ASYNC_SCROLLING)
|