void LayerTreeCoordinator::performScheduledLayerFlush()
{
if (m_isSuspended || m_waitingForUIProcess)
return;
syncDisplayState();
if (!m_isValid)
return;
if (flushPendingLayerChanges())
didPerformScheduledLayerFlush();
}
void LayerTreeHostCA::performScheduledLayerFlush()
{
{
RefPtr<LayerTreeHostCA> protect(this);
m_webPage->layoutIfNeeded();
if (!m_isValid)
return;
}
if (!flushPendingLayerChanges())
return;
didPerformScheduledLayerFlush();
}
void LayerTreeCoordinator::performScheduledLayerFlush()
{
if (m_isSuspended || m_waitingForUIProcess)
return;
// We lock the animations while performing layout, to avoid flickers caused by animations continuing in the UI process while
// the web process layout wants to cancel them.
lockAnimations();
syncDisplayState();
// We can unlock the animations before flushing if there are no visible changes, for example if there are content updates
// in a layer with opacity 0.
bool canUnlockBeforeFlush = !m_isValid || !toCoordinatedGraphicsLayer(m_rootLayer.get())->hasPendingVisibleChanges();
if (canUnlockBeforeFlush)
unlockAnimations();
if (!m_isValid)
return;
if (flushPendingLayerChanges())
didPerformScheduledLayerFlush();
}
