LayoutUnit LayoutFlowThread::pageLogicalHeightForOffset(LayoutUnit offset)
{
LayoutMultiColumnSet* columnSet = columnSetAtBlockOffset(offset);
if (!columnSet)
return 0;
return columnSet->pageLogicalHeight();
}
LayoutUnit LayoutFlowThread::pageRemainingLogicalHeightForOffset(LayoutUnit offset, PageBoundaryRule pageBoundaryRule)
{
LayoutMultiColumnSet* columnSet = columnSetAtBlockOffset(offset);
if (!columnSet)
return 0;
LayoutUnit pageLogicalTop = columnSet->pageLogicalTopForOffset(offset);
LayoutUnit pageLogicalHeight = columnSet->pageLogicalHeight();
LayoutUnit pageLogicalBottom = pageLogicalTop + pageLogicalHeight;
LayoutUnit remainingHeight = pageLogicalBottom - offset;
if (pageBoundaryRule == IncludePageBoundary) {
// If IncludePageBoundary is set, the line exactly on the top edge of a
// columnSet will act as being part of the previous columnSet.
remainingHeight = intMod(remainingHeight, pageLogicalHeight);
}
return remainingHeight;
}