ScrollingStateStickyNode.cpp [plain text]
#include "config.h"
#include "ScrollingStateStickyNode.h"
#if ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
#include "GraphicsLayer.h"
#include "Logging.h"
#include "ScrollingStateTree.h"
#include <wtf/text/TextStream.h>
namespace WebCore {
Ref<ScrollingStateStickyNode> ScrollingStateStickyNode::create(ScrollingStateTree& stateTree, ScrollingNodeID nodeID)
{
return adoptRef(*new ScrollingStateStickyNode(stateTree, nodeID));
}
ScrollingStateStickyNode::ScrollingStateStickyNode(ScrollingStateTree& tree, ScrollingNodeID nodeID)
: ScrollingStateNode(StickyNode, tree, nodeID)
{
}
ScrollingStateStickyNode::ScrollingStateStickyNode(const ScrollingStateStickyNode& node, ScrollingStateTree& adoptiveTree)
: ScrollingStateNode(node, adoptiveTree)
, m_constraints(StickyPositionViewportConstraints(node.viewportConstraints()))
{
}
ScrollingStateStickyNode::~ScrollingStateStickyNode() = default;
Ref<ScrollingStateNode> ScrollingStateStickyNode::clone(ScrollingStateTree& adoptiveTree)
{
return adoptRef(*new ScrollingStateStickyNode(*this, adoptiveTree));
}
void ScrollingStateStickyNode::updateConstraints(const StickyPositionViewportConstraints& constraints)
{
if (m_constraints == constraints)
return;
LOG_WITH_STREAM(Scrolling, stream << "ScrollingStateStickyNode " << scrollingNodeID() << " updateConstraints with constraining rect " << constraints.constrainingRectAtLastLayout() << " sticky offset " << constraints.stickyOffsetAtLastLayout() << " layer pos at last layout " << constraints.layerPositionAtLastLayout());
m_constraints = constraints;
setPropertyChanged(ViewportConstraints);
}
void ScrollingStateStickyNode::reconcileLayerPositionForViewportRect(const LayoutRect& viewportRect, ScrollingLayerPositionAction action)
{
FloatPoint position = m_constraints.layerPositionForConstrainingRect(viewportRect);
if (layer().representsGraphicsLayer()) {
auto* graphicsLayer = static_cast<GraphicsLayer*>(layer());
LOG_WITH_STREAM(Compositing, stream << "ScrollingStateStickyNode " << scrollingNodeID() << " reconcileLayerPositionForViewportRect " << action << " position of layer " << graphicsLayer->primaryLayerID() << " to " << position << " sticky offset " << m_constraints.stickyOffsetAtLastLayout());
switch (action) {
case ScrollingLayerPositionAction::Set:
graphicsLayer->setPosition(position);
break;
case ScrollingLayerPositionAction::SetApproximate:
graphicsLayer->setApproximatePosition(position);
break;
case ScrollingLayerPositionAction::Sync:
graphicsLayer->syncPosition(position);
break;
}
}
}
void ScrollingStateStickyNode::dumpProperties(TextStream& ts, ScrollingStateTreeAsTextBehavior behavior) const
{
ts << "Sticky 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.hasAnchorEdge(ViewportConstraints::AnchorEdgeLeft))
ts.dumpProperty("left offset", m_constraints.leftOffset());
if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeRight))
ts.dumpProperty("right offset", m_constraints.rightOffset());
if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeTop))
ts.dumpProperty("top offset", m_constraints.topOffset());
if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeBottom))
ts.dumpProperty("bottom offset", m_constraints.bottomOffset());
ts.dumpProperty("containing block rect", m_constraints.containingBlockRect());
ts.dumpProperty("sticky box rect", m_constraints.stickyBoxRect());
ts.dumpProperty("constraining rect", m_constraints.constrainingRectAtLastLayout());
ts.dumpProperty("sticky offset at last layout", m_constraints.stickyOffsetAtLastLayout());
ts.dumpProperty("layer position at last layout", m_constraints.layerPositionAtLastLayout());
}
}
#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)