void RenderLayerStackingNode::updateStackingNodesAfterStyleChange(const RenderStyle* oldStyle)
{
bool wasStackingContext = oldStyle ? !oldStyle->hasAutoZIndex() : false;
int oldZIndex = oldStyle ? oldStyle->zIndex() : 0;
bool isStackingContext = this->isStackingContext();
if (isStackingContext == wasStackingContext && oldZIndex == zIndex())
return;
dirtyStackingContextZOrderLists();
if (isStackingContext)
dirtyZOrderLists();
else
clearZOrderLists();
}
void RenderLayerStackingNode::updateStackingNodesAfterStyleChange(const RenderStyle* oldStyle)
{
bool wasStackingContext = oldStyle ? isStackingContext(oldStyle) : false;
EVisibility oldVisibility = oldStyle ? oldStyle->visibility() : VISIBLE;
int oldZIndex = oldStyle ? oldStyle->zIndex() : 0;
// FIXME: RenderLayer already handles visibility changes through our visiblity dirty bits. This logic could
// likely be folded along with the rest.
bool isStackingContext = this->isStackingContext();
if (isStackingContext == wasStackingContext && oldVisibility == renderer()->style()->visibility() && oldZIndex == zIndex())
return;
dirtyStackingContainerZOrderLists();
if (isStackingContainer())
dirtyZOrderLists();
else
clearZOrderLists();
compositor()->setNeedsUpdateCompositingRequirementsState();
}
void PaintLayerStackingNode::styleDidChange(const ComputedStyle* oldStyle) {
bool wasStackingContext = oldStyle ? oldStyle->isStackingContext() : false;
int oldZIndex = oldStyle ? oldStyle->zIndex() : 0;
bool isStackingContext = this->isStackingContext();
bool shouldBeStacked = layoutObject()->styleRef().isStacked();
if (isStackingContext == wasStackingContext &&
m_isStacked == shouldBeStacked && oldZIndex == zIndex())
return;
dirtyStackingContextZOrderLists();
if (isStackingContext)
dirtyZOrderLists();
else
clearZOrderLists();
if (m_isStacked != shouldBeStacked) {
m_isStacked = shouldBeStacked;
if (!layoutObject()->documentBeingDestroyed() && !layer()->isRootLayer())
compositor()->setNeedsCompositingUpdate(CompositingUpdateRebuildTree);
}
}