void RenderMultiColumnSet::computeLogicalHeight()
{
// Make sure our column height is up to date.
RenderMultiColumnBlock* parentBlock = toRenderMultiColumnBlock(parent());
setColumnHeight(parentBlock->columnHeight()); // FIXME: Once we make more than one column set, this will become variable.
// Our logical height is always just the height of our columns.
setLogicalHeight(columnHeight());
}
void RenderMultiColumnBlock::checkForPaginationLogicalHeightChange(LayoutUnit& /*pageLogicalHeight*/, bool& /*pageLogicalHeightChanged*/, bool& /*hasSpecifiedPageLogicalHeight*/)
{
// We don't actually update any of the variables. We just subclassed to adjust our column height.
updateLogicalHeight();
LayoutUnit newContentLogicalHeight = contentLogicalHeight();
m_requiresBalancing = !newContentLogicalHeight;
if (!m_requiresBalancing) {
// The regions will be invalidated when we lay them out and they change size to
// the new column height.
if (columnHeight() != newContentLogicalHeight)
setColumnHeight(newContentLogicalHeight);
}
setLogicalHeight(0);
}
void RenderMultiColumnBlock::checkForPaginationLogicalHeightChange(LayoutUnit& pageLogicalHeight, bool& pageLogicalHeightChanged, bool& hasSpecifiedPageLogicalHeight)
{
// We need to go ahead and set our explicit page height if one exists, so that we can
// avoid doing multiple layout passes.
computeLogicalHeight();
LayoutUnit newContentLogicalHeight = contentLogicalHeight();
if (newContentLogicalHeight > ZERO_LAYOUT_UNIT) {
pageLogicalHeight = newContentLogicalHeight;
hasSpecifiedPageLogicalHeight = true;
}
setLogicalHeight(ZERO_LAYOUT_UNIT);
if (columnHeight() != pageLogicalHeight && everHadLayout()) {
setColumnHeight(pageLogicalHeight);
pageLogicalHeightChanged = true;
}
// Set up our column sets.
ensureColumnSets();
}
