void AsyncScrollingCoordinator::recomputeWheelEventHandlerCountForFrameView(FrameView* frameView)
{
ScrollingStateFrameScrollingNode* node = toScrollingStateFrameScrollingNode(m_scrollingStateTree->stateNodeForID(frameView->scrollLayerID()));
if (!node)
return;
node->setWheelEventHandlerCount(computeCurrentWheelEventHandlerCount());
}
void AsyncScrollingCoordinator::frameViewRootLayerDidChange(FrameView& frameView)
{
ASSERT(isMainThread());
ASSERT(m_page);
if (!coordinatesScrollingForFrameView(frameView))
return;
// FIXME: In some navigation scenarios, the FrameView has no RenderView or that RenderView has not been composited.
// This needs cleaning up: https://bugs.webkit.org/show_bug.cgi?id=132724
if (!frameView.scrollLayerID())
return;
// If the root layer does not have a ScrollingStateNode, then we should create one.
ensureRootStateNodeForFrameView(frameView);
ASSERT(m_scrollingStateTree->rootStateNode());
ScrollingCoordinator::frameViewRootLayerDidChange(frameView);
ScrollingStateFrameScrollingNode* node = downcast<ScrollingStateFrameScrollingNode>(m_scrollingStateTree->stateNodeForID(frameView.scrollLayerID()));
node->setLayer(scrollLayerForFrameView(frameView));
node->setScrolledContentsLayer(rootContentLayerForFrameView(frameView));
node->setCounterScrollingLayer(counterScrollingLayerForFrameView(frameView));
node->setInsetClipLayer(insetClipLayerForFrameView(frameView));
node->setContentShadowLayer(contentShadowLayerForFrameView(frameView));
node->setHeaderLayer(headerLayerForFrameView(frameView));
node->setFooterLayer(footerLayerForFrameView(frameView));
node->setScrollBehaviorForFixedElements(frameView.scrollBehaviorForFixedElements());
}
void AsyncScrollingCoordinator::frameViewLayoutUpdated(FrameView* frameView)
{
ASSERT(isMainThread());
ASSERT(m_page);
// If there isn't a root node yet, don't do anything. We'll be called again after creating one.
if (!m_scrollingStateTree->rootStateNode())
return;
// Compute the region of the page that we can't do fast scrolling for. This currently includes
// all scrollable areas, such as subframes, overflow divs and list boxes. We need to do this even if the
// frame view whose layout was updated is not the main frame.
// In the future, we may want to have the ability to set non-fast scrolling regions for more than
// just the root node. But right now, this concept only applies to the root.
m_scrollingStateTree->rootStateNode()->setNonFastScrollableRegion(computeNonFastScrollableRegion(&m_page->mainFrame(), IntPoint()));
if (!coordinatesScrollingForFrameView(frameView))
return;
ScrollingStateFrameScrollingNode* node = toScrollingStateFrameScrollingNode(m_scrollingStateTree->stateNodeForID(frameView->scrollLayerID()));
if (!node)
return;
Scrollbar* verticalScrollbar = frameView->verticalScrollbar();
Scrollbar* horizontalScrollbar = frameView->horizontalScrollbar();
node->setScrollbarPaintersFromScrollbars(verticalScrollbar, horizontalScrollbar);
node->setFrameScaleFactor(frameView->frame().frameScaleFactor());
node->setHeaderHeight(frameView->headerHeight());
node->setFooterHeight(frameView->footerHeight());
node->setTopContentInset(frameView->topContentInset());
node->setScrollOrigin(frameView->scrollOrigin());
node->setScrollableAreaSize(frameView->visibleContentRect().size());
node->setTotalContentsSize(frameView->totalContentsSize());
ScrollableAreaParameters scrollParameters;
scrollParameters.horizontalScrollElasticity = frameView->horizontalScrollElasticity();
scrollParameters.verticalScrollElasticity = frameView->verticalScrollElasticity();
scrollParameters.hasEnabledHorizontalScrollbar = horizontalScrollbar && horizontalScrollbar->enabled();
scrollParameters.hasEnabledVerticalScrollbar = verticalScrollbar && verticalScrollbar->enabled();
scrollParameters.horizontalScrollbarMode = frameView->horizontalScrollbarMode();
scrollParameters.verticalScrollbarMode = frameView->verticalScrollbarMode();
node->setScrollableAreaParameters(scrollParameters);
}
void AsyncScrollingCoordinator::updateFrameScrollingNode(ScrollingNodeID nodeID, GraphicsLayer* layer, GraphicsLayer* scrolledContentsLayer, GraphicsLayer* counterScrollingLayer, GraphicsLayer* insetClipLayer, const ScrollingGeometry* scrollingGeometry)
{
ScrollingStateFrameScrollingNode* node = downcast<ScrollingStateFrameScrollingNode>(m_scrollingStateTree->stateNodeForID(nodeID));
ASSERT(node);
if (!node)
return;
node->setLayer(layer);
node->setInsetClipLayer(insetClipLayer);
node->setScrolledContentsLayer(scrolledContentsLayer);
node->setCounterScrollingLayer(counterScrollingLayer);
if (scrollingGeometry) {
node->setScrollOrigin(scrollingGeometry->scrollOrigin);
node->setScrollPosition(scrollingGeometry->scrollPosition);
node->setTotalContentsSize(scrollingGeometry->contentSize);
node->setReachableContentsSize(scrollingGeometry->reachableContentSize);
node->setScrollableAreaSize(scrollingGeometry->scrollableAreaSize);
}
}
void AsyncScrollingCoordinator::frameViewLayoutUpdated(FrameView& frameView)
{
ASSERT(isMainThread());
ASSERT(m_page);
// If there isn't a root node yet, don't do anything. We'll be called again after creating one.
if (!m_scrollingStateTree->rootStateNode())
return;
// Compute the region of the page that we can't do fast scrolling for. This currently includes
// all scrollable areas, such as subframes, overflow divs and list boxes. We need to do this even if the
// frame view whose layout was updated is not the main frame.
// In the future, we may want to have the ability to set non-fast scrolling regions for more than
// just the root node. But right now, this concept only applies to the root.
m_scrollingStateTree->rootStateNode()->setNonFastScrollableRegion(absoluteNonFastScrollableRegion());
m_nonFastScrollableRegionDirty = false;
if (!coordinatesScrollingForFrameView(frameView))
return;
ScrollingStateFrameScrollingNode* node = downcast<ScrollingStateFrameScrollingNode>(m_scrollingStateTree->stateNodeForID(frameView.scrollLayerID()));
if (!node)
return;
Scrollbar* verticalScrollbar = frameView.verticalScrollbar();
Scrollbar* horizontalScrollbar = frameView.horizontalScrollbar();
node->setScrollbarPaintersFromScrollbars(verticalScrollbar, horizontalScrollbar);
node->setFrameScaleFactor(frameView.frame().frameScaleFactor());
node->setHeaderHeight(frameView.headerHeight());
node->setFooterHeight(frameView.footerHeight());
node->setTopContentInset(frameView.topContentInset());
node->setScrollOrigin(frameView.scrollOrigin());
node->setScrollableAreaSize(frameView.visibleContentRect().size());
node->setTotalContentsSize(frameView.totalContentsSize());
node->setReachableContentsSize(frameView.totalContentsSize());
node->setFixedElementsLayoutRelativeToFrame(frameView.fixedElementsLayoutRelativeToFrame());
#if ENABLE(CSS_SCROLL_SNAP)
frameView.updateSnapOffsets();
updateScrollSnapPropertiesWithFrameView(frameView);
#endif
#if PLATFORM(COCOA)
Page* page = frameView.frame().page();
if (page && page->expectsWheelEventTriggers()) {
LOG(WheelEventTestTriggers, " AsyncScrollingCoordinator::frameViewLayoutUpdated: Expects wheel event test trigger=%d", page->expectsWheelEventTriggers());
node->setExpectsWheelEventTestTrigger(page->expectsWheelEventTriggers());
}
#endif
ScrollableAreaParameters scrollParameters;
scrollParameters.horizontalScrollElasticity = frameView.horizontalScrollElasticity();
scrollParameters.verticalScrollElasticity = frameView.verticalScrollElasticity();
scrollParameters.hasEnabledHorizontalScrollbar = horizontalScrollbar && horizontalScrollbar->enabled();
scrollParameters.hasEnabledVerticalScrollbar = verticalScrollbar && verticalScrollbar->enabled();
scrollParameters.horizontalScrollbarMode = frameView.horizontalScrollbarMode();
scrollParameters.verticalScrollbarMode = frameView.verticalScrollbarMode();
node->setScrollableAreaParameters(scrollParameters);
}
void RemoteScrollingCoordinatorProxy::connectStateNodeLayers(ScrollingStateTree& stateTree, const RemoteLayerTreeHost& layerTreeHost, bool& fixedOrStickyLayerChanged)
{
for (auto& currNode : stateTree.nodeMap().values()) {
if (currNode->hasChangedProperty(ScrollingStateNode::ScrollLayer))
currNode->setLayer(layerTreeHost.getLayer(currNode->layer()));
switch (currNode->nodeType()) {
case FrameScrollingNode: {
ScrollingStateFrameScrollingNode* scrollingStateNode = toScrollingStateFrameScrollingNode(currNode);
if (scrollingStateNode->hasChangedProperty(ScrollingStateFrameScrollingNode::ScrolledContentsLayer))
scrollingStateNode->setScrolledContentsLayer(layerTreeHost.getLayer(scrollingStateNode->scrolledContentsLayer()));
if (scrollingStateNode->hasChangedProperty(ScrollingStateFrameScrollingNode::CounterScrollingLayer))
scrollingStateNode->setCounterScrollingLayer(layerTreeHost.getLayer(scrollingStateNode->counterScrollingLayer()));
if (scrollingStateNode->hasChangedProperty(ScrollingStateFrameScrollingNode::InsetClipLayer))
scrollingStateNode->setInsetClipLayer(layerTreeHost.getLayer(scrollingStateNode->insetClipLayer()));
if (scrollingStateNode->hasChangedProperty(ScrollingStateFrameScrollingNode::ContentShadowLayer))
scrollingStateNode->setContentShadowLayer(layerTreeHost.getLayer(scrollingStateNode->contentShadowLayer()));
// FIXME: we should never have header and footer layers coming from the WebProcess.
if (scrollingStateNode->hasChangedProperty(ScrollingStateFrameScrollingNode::HeaderLayer))
scrollingStateNode->setHeaderLayer(layerTreeHost.getLayer(scrollingStateNode->headerLayer()));
if (scrollingStateNode->hasChangedProperty(ScrollingStateFrameScrollingNode::FooterLayer))
scrollingStateNode->setFooterLayer(layerTreeHost.getLayer(scrollingStateNode->footerLayer()));
break;
}
case OverflowScrollingNode: {
ScrollingStateOverflowScrollingNode* scrollingStateNode = toScrollingStateOverflowScrollingNode(currNode);
if (scrollingStateNode->hasChangedProperty(ScrollingStateOverflowScrollingNode::ScrolledContentsLayer))
scrollingStateNode->setScrolledContentsLayer(layerTreeHost.getLayer(scrollingStateNode->scrolledContentsLayer()));
break;
}
case FixedNode:
if (currNode->hasChangedProperty(ScrollingStateNode::ScrollLayer))
fixedOrStickyLayerChanged = true;
break;
case StickyNode:
if (currNode->hasChangedProperty(ScrollingStateNode::ScrollLayer))
fixedOrStickyLayerChanged = true;
break;
}
}
}
ScrollingStateFrameScrollingNode::ScrollingStateFrameScrollingNode(const ScrollingStateFrameScrollingNode& stateNode, ScrollingStateTree& adoptiveTree)
: ScrollingStateScrollingNode(stateNode, adoptiveTree)
#if PLATFORM(MAC)
, m_verticalScrollerImp(stateNode.verticalScrollerImp())
, m_horizontalScrollerImp(stateNode.horizontalScrollerImp())
#endif
, m_eventTrackingRegions(stateNode.eventTrackingRegions())
, m_requestedScrollPosition(stateNode.requestedScrollPosition())
, m_frameScaleFactor(stateNode.frameScaleFactor())
, m_topContentInset(stateNode.topContentInset())
, m_headerHeight(stateNode.headerHeight())
, m_footerHeight(stateNode.footerHeight())
, m_synchronousScrollingReasons(stateNode.synchronousScrollingReasons())
, m_behaviorForFixed(stateNode.scrollBehaviorForFixedElements())
, m_requestedScrollPositionRepresentsProgrammaticScroll(stateNode.requestedScrollPositionRepresentsProgrammaticScroll())
, m_fixedElementsLayoutRelativeToFrame(stateNode.fixedElementsLayoutRelativeToFrame())
{
if (hasChangedProperty(ScrolledContentsLayer))
setScrolledContentsLayer(stateNode.scrolledContentsLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
if (hasChangedProperty(CounterScrollingLayer))
setCounterScrollingLayer(stateNode.counterScrollingLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
if (hasChangedProperty(InsetClipLayer))
setInsetClipLayer(stateNode.insetClipLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
if (hasChangedProperty(ContentShadowLayer))
setContentShadowLayer(stateNode.contentShadowLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
if (hasChangedProperty(HeaderLayer))
setHeaderLayer(stateNode.headerLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
if (hasChangedProperty(FooterLayer))
setFooterLayer(stateNode.footerLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
}