RenderObject* RenderMultiColumnBlock::layoutSpecialExcludedChild(bool relayoutChildren)
{
if (!m_flowThread)
return 0;
// Update the sizes of our regions (but not the placement) before we lay out the flow thread.
// FIXME: Eventually this is going to get way more complicated, and we will be destroying regions
// instead of trying to keep them around.
bool shouldInvalidateRegions = false;
for (RenderBox* childBox = firstChildBox(); childBox; childBox = childBox->nextSiblingBox()) {
if (childBox == m_flowThread)
continue;
if (relayoutChildren || childBox->needsLayout()) {
childBox->updateLogicalWidth();
childBox->updateLogicalHeight();
shouldInvalidateRegions = true;
}
}
if (shouldInvalidateRegions)
m_flowThread->invalidateRegions();
if (relayoutChildren)
m_flowThread->setChildNeedsLayout(true, MarkOnlyThis);
setLogicalTopForChild(m_flowThread, borderBefore() + paddingBefore());
m_flowThread->layoutIfNeeded();
determineLogicalLeftPositionForChild(m_flowThread);
return m_flowThread;
}
RenderObject* RenderMultiColumnBlock::layoutSpecialExcludedChild(bool relayoutChildren)
{
if (!m_flowThread)
return 0;
// Update the dimensions of our regions before we lay out the flow thread.
// FIXME: Eventually this is going to get way more complicated, and we will be destroying regions
// instead of trying to keep them around.
bool shouldInvalidateRegions = false;
for (RenderBox* childBox = firstChildBox(); childBox; childBox = childBox->nextSiblingBox()) {
if (childBox == m_flowThread)
continue;
if (relayoutChildren || childBox->needsLayout()) {
if (!m_inBalancingPass && childBox->isRenderMultiColumnSet())
toRenderMultiColumnSet(childBox)->prepareForLayout();
shouldInvalidateRegions = true;
}
}
if (shouldInvalidateRegions)
m_flowThread->invalidateRegions();
if (relayoutChildren)
m_flowThread->setChildNeedsLayout(MarkOnlyThis);
setLogicalTopForChild(*m_flowThread, borderAndPaddingBefore());
m_flowThread->layoutIfNeeded();
determineLogicalLeftPositionForChild(*m_flowThread);
return m_flowThread;
}
void RenderBlockFlow::layoutBlockChild(RenderBox* child)
{
child->computeAndSetBlockDirectionMargins(this);
LayoutUnit marginBefore = marginBeforeForChild(child);
child->setY(logicalHeight() + marginBefore);
child->layoutIfNeeded();
determineLogicalLeftPositionForChild(child);
setLogicalHeight(logicalHeight() + marginBefore + logicalHeightForChild(child) + marginAfterForChild(child));
}