void ScrollingTreeScrollingNode::updateBeforeChildren(ScrollingStateNode* stateNode)
{
ScrollingStateScrollingNode* state = toScrollingStateScrollingNode(stateNode);
if (state->hasChangedProperty(ScrollingStateScrollingNode::ViewportRect))
m_viewportRect = state->viewportRect();
if (state->hasChangedProperty(ScrollingStateScrollingNode::TotalContentsSize)) {
if (scrollingTree().isRubberBandInProgress())
m_totalContentsSizeForRubberBand = m_totalContentsSize;
else
m_totalContentsSizeForRubberBand = state->totalContentsSize();
m_totalContentsSize = state->totalContentsSize();
}
if (state->hasChangedProperty(ScrollingStateScrollingNode::FrameScaleFactor))
m_frameScaleFactor = state->frameScaleFactor();
if (state->hasChangedProperty(ScrollingStateScrollingNode::ShouldUpdateScrollLayerPositionOnMainThread))
m_shouldUpdateScrollLayerPositionOnMainThread = state->shouldUpdateScrollLayerPositionOnMainThread();
if (state->hasChangedProperty(ScrollingStateScrollingNode::HorizontalScrollElasticity))
m_horizontalScrollElasticity = state->horizontalScrollElasticity();
if (state->hasChangedProperty(ScrollingStateScrollingNode::VerticalScrollElasticity))
m_verticalScrollElasticity = state->verticalScrollElasticity();
if (state->hasChangedProperty(ScrollingStateScrollingNode::HasEnabledHorizontalScrollbar))
m_hasEnabledHorizontalScrollbar = state->hasEnabledHorizontalScrollbar();
if (state->hasChangedProperty(ScrollingStateScrollingNode::HasEnabledVerticalScrollbar))
m_hasEnabledVerticalScrollbar = state->hasEnabledVerticalScrollbar();
if (state->hasChangedProperty(ScrollingStateScrollingNode::HorizontalScrollbarMode))
m_horizontalScrollbarMode = state->horizontalScrollbarMode();
if (state->hasChangedProperty(ScrollingStateScrollingNode::VerticalScrollbarMode))
m_verticalScrollbarMode = state->verticalScrollbarMode();
if (state->hasChangedProperty(ScrollingStateScrollingNode::ScrollOrigin))
m_scrollOrigin = state->scrollOrigin();
if (state->hasChangedProperty(ScrollingStateScrollingNode::HeaderHeight))
m_headerHeight = state->headerHeight();
if (state->hasChangedProperty(ScrollingStateScrollingNode::FooterHeight))
m_footerHeight = state->footerHeight();
if (state->hasChangedProperty(ScrollingStateScrollingNode::BehaviorForFixedElements))
m_behaviorForFixed = state->scrollBehaviorForFixedElements();
}
ScrollingStateScrollingNode::ScrollingStateScrollingNode(const ScrollingStateScrollingNode& stateNode, ScrollingStateTree& adoptiveTree)
: ScrollingStateNode(stateNode, adoptiveTree)
#if PLATFORM(MAC)
, m_verticalScrollbarPainter(stateNode.verticalScrollbarPainter())
, m_horizontalScrollbarPainter(stateNode.horizontalScrollbarPainter())
#endif
, m_viewportSize(stateNode.viewportSize())
, m_totalContentsSize(stateNode.totalContentsSize())
, m_scrollPosition(stateNode.scrollPosition())
, m_scrollOrigin(stateNode.scrollOrigin())
, m_scrollableAreaParameters(stateNode.scrollableAreaParameters())
, m_nonFastScrollableRegion(stateNode.nonFastScrollableRegion())
, m_frameScaleFactor(stateNode.frameScaleFactor())
, m_wheelEventHandlerCount(stateNode.wheelEventHandlerCount())
, m_synchronousScrollingReasons(stateNode.synchronousScrollingReasons())
, m_behaviorForFixed(stateNode.scrollBehaviorForFixedElements())
, m_headerHeight(stateNode.headerHeight())
, m_footerHeight(stateNode.footerHeight())
, m_requestedScrollPosition(stateNode.requestedScrollPosition())
, m_requestedScrollPositionRepresentsProgrammaticScroll(stateNode.requestedScrollPositionRepresentsProgrammaticScroll())
, m_topContentInset(stateNode.topContentInset())
{
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()));
}
