void RenderFlowThread::computeLogicalHeight(LayoutUnit, LayoutUnit logicalTop, LogicalExtentComputedValues& computedValues) const
{
computedValues.m_position = logicalTop;
computedValues.m_extent = 0;
for (RenderMultiColumnSetList::const_iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) {
RenderMultiColumnSet* columnSet = *iter;
computedValues.m_extent += columnSet->logicalHeightOfAllFlowThreadContent();
}
}
void RenderFlowThread::updateRegionsFlowThreadPortionRect()
{
LayoutUnit logicalHeight = 0;
// FIXME: Optimize not to clear the interval all the time. This implies manually managing the tree nodes lifecycle.
m_multiColumnSetIntervalTree.clear();
m_multiColumnSetIntervalTree.initIfNeeded();
for (RenderMultiColumnSetList::iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) {
RenderMultiColumnSet* columnSet = *iter;
LayoutUnit columnSetLogicalWidth = columnSet->pageLogicalWidth();
LayoutUnit columnSetLogicalHeight = std::min<LayoutUnit>(RenderFlowThread::maxLogicalHeight() - logicalHeight, columnSet->logicalHeightOfAllFlowThreadContent());
LayoutRect columnSetRect(style()->direction() == LTR ? LayoutUnit() : logicalWidth() - columnSetLogicalWidth, logicalHeight, columnSetLogicalWidth, columnSetLogicalHeight);
columnSet->setFlowThreadPortionRect(isHorizontalWritingMode() ? columnSetRect : columnSetRect.transposedRect());
m_multiColumnSetIntervalTree.add(MultiColumnSetIntervalTree::createInterval(logicalHeight, logicalHeight + columnSetLogicalHeight, columnSet));
logicalHeight += columnSetLogicalHeight;
}
}