void RenderRegion::layoutBlock(bool relayoutChildren, LayoutUnit)
{
StackStats::LayoutCheckPoint layoutCheckPoint;
RenderBlock::layoutBlock(relayoutChildren);
if (isValid()) {
LayoutRect oldRegionRect(flowThreadPortionRect());
if (!isHorizontalWritingMode())
oldRegionRect = oldRegionRect.transposedRect();
if (hasAutoLogicalHeight() && !m_flowThread->inConstrainedLayoutPhase()) {
m_flowThread->invalidateRegions();
clearOverrideLogicalContentHeight();
return;
}
if (!isRenderRegionSet() && (oldRegionRect.width() != pageLogicalWidth() || oldRegionRect.height() != pageLogicalHeight()))
// This can happen even if we are in the inConstrainedLayoutPhase and it will trigger a pathological layout of the flow thread.
m_flowThread->invalidateRegions();
}
// FIXME: We need to find a way to set up overflow properly. Our flow thread hasn't gotten a layout
// yet, so we can't look to it for correct information. It's possible we could wait until after the RenderFlowThread
// gets a layout, and then try to propagate overflow information back to the region, and then mark for a second layout.
// That second layout would then be able to use the information from the RenderFlowThread to set up overflow.
//
// The big problem though is that overflow needs to be region-specific. We can't simply use the RenderFlowThread's global
// overflow values, since then we'd always think any narrow region had huge overflow (all the way to the width of the
// RenderFlowThread itself).
//
// We'll need to expand RenderBoxRegionInfo to also hold left and right overflow values.
}
void RenderNamedFlowFragment::layoutBlock(bool relayoutChildren, LayoutUnit)
{
StackStats::LayoutCheckPoint layoutCheckPoint;
RenderRegion::layoutBlock(relayoutChildren);
if (isValid()) {
LayoutRect oldRegionRect(flowThreadPortionRect());
if (!isHorizontalWritingMode())
oldRegionRect = oldRegionRect.transposedRect();
if (m_flowThread->inOverflowLayoutPhase() || m_flowThread->inFinalLayoutPhase()) {
computeOverflowFromFlowThread();
updateOversetState();
}
if (hasAutoLogicalHeight() && m_flowThread->inMeasureContentLayoutPhase()) {
m_flowThread->invalidateRegions();
clearComputedAutoHeight();
return;
}
if ((oldRegionRect.width() != pageLogicalWidth() || oldRegionRect.height() != pageLogicalHeight()) && !m_flowThread->inFinalLayoutPhase())
// This can happen even if we are in the inConstrainedLayoutPhase and it will trigger a pathological layout of the flow thread.
m_flowThread->invalidateRegions();
}
}
void RenderNamedFlowFragment::invalidateRegionIfNeeded()
{
if (!isValid())
return;
LayoutRect oldRegionRect(flowThreadPortionRect());
if (!isHorizontalWritingMode())
oldRegionRect = oldRegionRect.transposedRect();
if ((oldRegionRect.width() != pageLogicalWidth() || oldRegionRect.height() != pageLogicalHeight()) && !m_flowThread->inFinalLayoutPhase()) {
// This can happen even if we are in the inConstrainedLayoutPhase and it will trigger a pathological layout of the flow thread.
m_flowThread->invalidateRegions();
}
}
void RenderRegion::layout()
{
RenderReplaced::layout();
if (m_flowThread && isValid()) {
LayoutRect oldRegionRect(regionRect());
if (!isHorizontalWritingMode())
oldRegionRect = oldRegionRect.transposedRect();
if (oldRegionRect.width() != logicalWidthForFlowThreadContent() || oldRegionRect.height() != logicalHeightForFlowThreadContent())
m_flowThread->invalidateRegions();
}
// FIXME: We need to find a way to set up overflow properly. Our flow thread hasn't gotten a layout
// yet, so we can't look to it for correct information. It's possible we could wait until after the RenderFlowThread
// gets a layout, and then try to propagate overflow information back to the region, and then mark for a second layout.
// That second layout would then be able to use the information from the RenderFlowThread to set up overflow.
//
// The big problem though is that overflow needs to be region-specific. We can't simply use the RenderFlowThread's global
// overflow values, since then we'd always think any narrow region had huge overflow (all the way to the width of the
// RenderFlowThread itself).
//
// We'll need to expand RenderBoxRegionInfo to also hold left and right overflow values.
}
