void RemoteScrollingTreeTextStream::dump(const ScrollingStateFixedNode& node, bool changedPropertiesOnly)
{
RemoteScrollingTreeTextStream& ts = *this;
if (!changedPropertiesOnly || node.hasChangedProperty(ScrollingStateFixedNode::ViewportConstraints))
ts << node.viewportConstraints();
}
void ArgumentCoder<ScrollingStateFixedNode>::encode(ArgumentEncoder& encoder, const ScrollingStateFixedNode& node)
{
encoder << static_cast<const ScrollingStateNode&>(node);
if (node.hasChangedProperty(ScrollingStateFixedNode::ViewportConstraints))
encoder << node.viewportConstraints();
}
bool ArgumentCoder<ScrollingStateFixedNode>::decode(ArgumentDecoder& decoder, ScrollingStateFixedNode& node)
{
if (!decoder.decode(static_cast<ScrollingStateNode&>(node)))
return false;
if (node.hasChangedProperty(ScrollingStateFixedNode::ViewportConstraints)) {
FixedPositionViewportConstraints decodedValue;
if (!decoder.decode(decodedValue))
return false;
node.updateConstraints(decodedValue);
}
return true;
}
void ScrollingCoordinatorCoordinatedGraphics::updateViewportConstrainedNode(ScrollingNodeID nodeID, const ViewportConstraints& constraints, GraphicsLayer* graphicsLayer)
{
ASSERT(supportsFixedPositionLayers());
ScrollingStateNode* node = m_scrollingStateTree->stateNodeForID(nodeID);
if (!node)
return;
switch (constraints.constraintType()) {
case ViewportConstraints::FixedPositionConstraint: {
toCoordinatedGraphicsLayer(graphicsLayer)->setFixedToViewport(true); // FIXME : Use constraints!
ScrollingStateFixedNode* fixedNode = toScrollingStateFixedNode(node);
fixedNode->setScrollLayer(graphicsLayer);
break;
}
case ViewportConstraints::StickyPositionConstraint:
break; // FIXME : Support sticky elements.
default:
ASSERT_NOT_REACHED();
}
}
void AsyncScrollingCoordinator::updateViewportConstrainedNode(ScrollingNodeID nodeID, const ViewportConstraints& constraints, GraphicsLayer* graphicsLayer)
{
ASSERT(supportsFixedPositionLayers());
ScrollingStateNode* node = m_scrollingStateTree->stateNodeForID(nodeID);
if (!node)
return;
switch (constraints.constraintType()) {
case ViewportConstraints::FixedPositionConstraint: {
ScrollingStateFixedNode* fixedNode = toScrollingStateFixedNode(node);
fixedNode->setLayer(graphicsLayer);
fixedNode->updateConstraints((const FixedPositionViewportConstraints&)constraints);
break;
}
case ViewportConstraints::StickyPositionConstraint: {
ScrollingStateStickyNode* stickyNode = toScrollingStateStickyNode(node);
stickyNode->setLayer(graphicsLayer);
stickyNode->updateConstraints((const StickyPositionViewportConstraints&)constraints);
break;
}
}
}
ScrollingStateFixedNode::ScrollingStateFixedNode(const ScrollingStateFixedNode& node)
: ScrollingStateNode(node)
, m_constraints(FixedPositionViewportConstraints(node.viewportConstraints()))
{
}
