ScrollingStateFixedNode.cpp [plain text]
#include "config.h"
#include "ScrollingStateFixedNode.h"
#include "GraphicsLayer.h"
#include "ScrollingStateTree.h"
#include "TextStream.h"
#include <wtf/OwnPtr.h>
#if ENABLE(THREADED_SCROLLING) || USE(COORDINATED_GRAPHICS)
namespace WebCore {
PassOwnPtr<ScrollingStateFixedNode> ScrollingStateFixedNode::create(ScrollingStateTree* stateTree, ScrollingNodeID nodeID)
{
return adoptPtr(new ScrollingStateFixedNode(stateTree, nodeID));
}
ScrollingStateFixedNode::ScrollingStateFixedNode(ScrollingStateTree* tree, ScrollingNodeID nodeID)
: ScrollingStateNode(tree, nodeID)
{
}
ScrollingStateFixedNode::ScrollingStateFixedNode(const ScrollingStateFixedNode& node)
: ScrollingStateNode(node)
, m_constraints(FixedPositionViewportConstraints(node.viewportConstraints()))
{
}
ScrollingStateFixedNode::~ScrollingStateFixedNode()
{
}
PassOwnPtr<ScrollingStateNode> ScrollingStateFixedNode::clone()
{
return adoptPtr(new ScrollingStateFixedNode(*this));
}
void ScrollingStateFixedNode::updateConstraints(const FixedPositionViewportConstraints& constraints)
{
if (m_constraints == constraints)
return;
m_constraints = constraints;
setPropertyChanged(ViewportConstraints);
m_scrollingStateTree->setHasChangedProperties(true);
}
void ScrollingStateFixedNode::syncLayerPositionForViewportRect(const LayoutRect& viewportRect)
{
FloatPoint position = m_constraints.layerPositionForViewportRect(viewportRect);
graphicsLayer()->syncPosition(position);
}
void ScrollingStateFixedNode::dumpProperties(TextStream& ts, int indent) const
{
ts << "(" << "Fixed node" << "\n";
if (m_constraints.anchorEdges()) {
writeIndent(ts, indent + 1);
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";
ts << ")\n";
}
if (!m_constraints.alignmentOffset().isEmpty()) {
writeIndent(ts, indent + 1);
ts << "(alignment offset " << m_constraints.alignmentOffset().width() << " " << m_constraints.alignmentOffset().height() << ")\n";
}
if (!m_constraints.viewportRectAtLastLayout().isEmpty()) {
writeIndent(ts, indent + 1);
FloatRect viewportRect = m_constraints.viewportRectAtLastLayout();
ts << "(viewport rect at last layout: " << viewportRect.x() << " " << viewportRect.y() << " " << viewportRect.width() << " " << viewportRect.height() << ")\n";
}
if (m_constraints.layerPositionAtLastLayout() != FloatPoint()) {
writeIndent(ts, indent + 1);
ts << "(layer position at last layout " << m_constraints.layerPositionAtLastLayout().x() << " " << m_constraints.layerPositionAtLastLayout().y() << ")\n";
}
}
}
#endif // ENABLE(THREADED_SCROLLING) || USE(COORDINATED_GRAPHICS)