void ScrollingTree::viewportChangedViaDelegatedScrolling(ScrollingNodeID nodeID, const WebCore::FloatRect& fixedPositionRect, double scale)
{
ScrollingTreeNode* node = nodeForID(nodeID);
if (!is<ScrollingTreeScrollingNode>(node))
return;
downcast<ScrollingTreeScrollingNode>(*node).updateLayersAfterViewportChange(fixedPositionRect, scale);
}
void ScrollingTree::viewportChangedViaDelegatedScrolling(ScrollingNodeID nodeID, const WebCore::FloatRect& viewportRect, double scale)
{
ScrollingTreeNode* node = nodeForID(nodeID);
if (!node)
return;
if (!node->isScrollingNode())
return;
toScrollingTreeScrollingNode(node)->updateLayersAfterViewportChange(viewportRect, scale);
}
void ScrollingTree::scrollPositionChangedViaDelegatedScrolling(ScrollingNodeID nodeID, const WebCore::FloatPoint& scrollPosition, bool inUserInteration)
{
ScrollingTreeNode* node = nodeForID(nodeID);
if (!is<ScrollingTreeOverflowScrollingNode>(node))
return;
// Update descendant nodes
downcast<ScrollingTreeOverflowScrollingNode>(*node).updateLayersAfterDelegatedScroll(scrollPosition);
// Update GraphicsLayers and scroll state.
scrollingTreeNodeDidScroll(nodeID, scrollPosition, inUserInteration ? SyncScrollingLayerPosition : SetScrollingLayerPosition);
}
void ScrollingTree::scrollPositionChangedViaDelegatedScrolling(ScrollingNodeID nodeID, const WebCore::FloatPoint& scrollPosition)
{
ScrollingTreeNode* node = nodeForID(nodeID);
if (!node)
return;
if (node->nodeType() != OverflowScrollingNode)
return;
// Update descendant nodes
toScrollingTreeScrollingNode(node)->updateLayersAfterDelegatedScroll(scrollPosition);
// Update GraphicsLayers and scroll state.
scrollingTreeNodeDidScroll(nodeID, scrollPosition);
}
