bool RenderFlowThread::logicalWidthChangedInRegions(const RenderBlock* block, LayoutUnit offsetFromLogicalTopOfFirstPage)
{
if (!hasRegions() || block == this) // Not necessary, since if any region changes, we do a full pagination relayout anyway.
return false;
RenderRegion* startRegion;
RenderRegion* endRegion;
getRegionRangeForBox(block, startRegion, endRegion);
for (RenderRegionList::iterator iter = m_regionList.find(startRegion); iter != m_regionList.end(); ++iter) {
RenderRegion* region = *iter;
if (!region->isValid())
continue;
ASSERT(!region->needsLayout());
OwnPtr<RenderBoxRegionInfo> oldInfo = region->takeRenderBoxRegionInfo(block);
if (!oldInfo)
continue;
LayoutUnit oldLogicalWidth = oldInfo->logicalWidth();
RenderBoxRegionInfo* newInfo = block->renderBoxRegionInfo(region, offsetFromLogicalTopOfFirstPage);
if (!newInfo || newInfo->logicalWidth() != oldLogicalWidth)
return true;
if (region == endRegion)
break;
}
return false;
}
bool RenderFlowThread::logicalWidthChangedInRegions(const RenderBlock* block, LayoutUnit offsetFromLogicalTopOfFirstPage)
{
if (!hasRegions() || block == this) // Not necessary, since if any region changes, we do a full pagination relayout anyway.
return false;
RenderRegion* startRegion;
RenderRegion* endRegion;
getRegionRangeForBox(block, startRegion, endRegion);
// If the block doesn't have a startRegion (and implicitly a region range) it's safe to assume the width in regions has changed (e.g. the region chain was invalidated).
if (!startRegion)
return true;
for (RenderRegionList::iterator iter = m_regionList.find(startRegion); iter != m_regionList.end(); ++iter) {
RenderRegion* region = *iter;
ASSERT(!region->needsLayout());
OwnPtr<RenderBoxRegionInfo> oldInfo = region->takeRenderBoxRegionInfo(block);
if (!oldInfo)
continue;
LayoutUnit oldLogicalWidth = oldInfo->logicalWidth();
RenderBoxRegionInfo* newInfo = block->renderBoxRegionInfo(region, offsetFromLogicalTopOfFirstPage);
if (!newInfo || newInfo->logicalWidth() != oldLogicalWidth)
return true;
if (region == endRegion)
break;
}
return false;
}
bool RenderFlowThread::logicalWidthChangedInRegions(const RenderBlock* block, LayoutUnit offsetFromLogicalTopOfFirstPage)
{
if (!hasRegions())
return false;
RenderRegion* startRegion;
RenderRegion* endRegion;
getRegionRangeForBox(block, startRegion, endRegion);
// When the region chain is invalidated the box information is discarded so we must assume the width has changed.
if (m_pageLogicalSizeChanged && !startRegion)
return true;
// Not necessary for the flow thread, since we already computed the correct info for it.
if (block == this)
return false;
for (RenderRegionList::iterator iter = m_regionList.find(startRegion); iter != m_regionList.end(); ++iter) {
RenderRegion* region = *iter;
ASSERT(!region->needsLayout() || region->isRenderRegionSet());
OwnPtr<RenderBoxRegionInfo> oldInfo = region->takeRenderBoxRegionInfo(block);
if (!oldInfo)
continue;
LayoutUnit oldLogicalWidth = oldInfo->logicalWidth();
RenderBoxRegionInfo* newInfo = block->renderBoxRegionInfo(region, offsetFromLogicalTopOfFirstPage);
if (!newInfo || newInfo->logicalWidth() != oldLogicalWidth)
return true;
if (region == endRegion)
break;
}
return false;
}
