void RenderNamedFlowFragment::updateOversetState()
{
ASSERT(isValid());
RenderNamedFlowThread* flowThread = namedFlowThread();
ASSERT(flowThread && (flowThread->inOverflowLayoutPhase() || flowThread->inFinalLayoutPhase()));
LayoutUnit flowContentBottom = flowThread->flowContentBottom();
bool isHorizontalWritingMode = flowThread->isHorizontalWritingMode();
LayoutUnit flowMin = flowContentBottom - (isHorizontalWritingMode ? flowThreadPortionRect().y() : flowThreadPortionRect().x());
LayoutUnit flowMax = flowContentBottom - (isHorizontalWritingMode ? flowThreadPortionRect().maxY() : flowThreadPortionRect().maxX());
RegionOversetState previousState = regionOversetState();
RegionOversetState state = RegionFit;
if (flowMin <= 0)
state = RegionEmpty;
if (flowMax > 0 && isLastRegion())
state = RegionOverset;
setRegionOversetState(state);
// Determine whether the NamedFlow object should dispatch a regionOversetChange event
if (previousState != state)
flowThread->setDispatchRegionOversetChangeEvent(true);
}
void FlowThreadController::updateFlowThreadsIntoMeasureContentPhase()
{
for (auto iter = m_renderNamedFlowThreadList->begin(), end = m_renderNamedFlowThreadList->end(); iter != end; ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
ASSERT(flowRenderer->inFinalLayoutPhase());
flowRenderer->setLayoutPhase(RenderFlowThread::LayoutPhaseMeasureContent);
}
}