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)
: ScrollingStateNode(stateNode)
, m_changedProperties(stateNode.changedProperties())
, m_viewportRect(stateNode.viewportRect())
, m_contentsSize(stateNode.contentsSize())
, m_nonFastScrollableRegion(stateNode.nonFastScrollableRegion())
, m_wheelEventHandlerCount(stateNode.wheelEventHandlerCount())
, m_shouldUpdateScrollLayerPositionOnMainThread(stateNode.shouldUpdateScrollLayerPositionOnMainThread())
, m_horizontalScrollElasticity(stateNode.horizontalScrollElasticity())
, m_verticalScrollElasticity(stateNode.verticalScrollElasticity())
, m_hasEnabledHorizontalScrollbar(stateNode.hasEnabledHorizontalScrollbar())
, m_hasEnabledVerticalScrollbar(stateNode.hasEnabledVerticalScrollbar())
, m_requestedScrollPositionRepresentsProgrammaticScroll(stateNode.requestedScrollPositionRepresentsProgrammaticScroll())
, m_horizontalScrollbarMode(stateNode.horizontalScrollbarMode())
, m_verticalScrollbarMode(stateNode.verticalScrollbarMode())
, m_requestedScrollPosition(stateNode.requestedScrollPosition())
, m_scrollOrigin(stateNode.scrollOrigin())
{
}
