// the computed height for the cell, which descendants use for percent height calculations
// it is the height (minus border, padding) of the cell's first in flow during its final
// reflow without an unconstrained height.
static nscoord
CalcUnpaginagedHeight(nsPresContext* aPresContext,
nsTableCellFrame& aCellFrame,
nsTableFrame& aTableFrame,
nscoord aVerticalBorderPadding)
{
const nsTableCellFrame* firstCellInFlow = (nsTableCellFrame*)aCellFrame.GetFirstInFlow();
nsTableFrame* firstTableInFlow = (nsTableFrame*)aTableFrame.GetFirstInFlow();
nsTableRowFrame* row
= static_cast<nsTableRowFrame*>(firstCellInFlow->GetParent());
nsTableRowGroupFrame* firstRGInFlow
= static_cast<nsTableRowGroupFrame*>(row->GetParent());
int32_t rowIndex;
firstCellInFlow->GetRowIndex(rowIndex);
int32_t rowSpan = aTableFrame.GetEffectiveRowSpan(*firstCellInFlow);
nscoord cellSpacing = firstTableInFlow->GetCellSpacingX();
nscoord computedHeight = ((rowSpan - 1) * cellSpacing) - aVerticalBorderPadding;
int32_t rowX;
for (row = firstRGInFlow->GetFirstRow(), rowX = 0; row; row = row->GetNextRow(), rowX++) {
if (rowX > rowIndex + rowSpan - 1) {
break;
}
else if (rowX >= rowIndex) {
computedHeight += row->GetUnpaginatedHeight(aPresContext);
}
}
return computedHeight;
}
// the computed bsize for the cell, which descendants use for percent bsize calculations
// it is the bsize (minus border, padding) of the cell's first in flow during its final
// reflow without an unconstrained bsize.
static nscoord
CalcUnpaginatedBSize(nsTableCellFrame& aCellFrame,
nsTableFrame& aTableFrame,
nscoord aBlockDirBorderPadding)
{
const nsTableCellFrame* firstCellInFlow =
static_cast<nsTableCellFrame*>(aCellFrame.FirstInFlow());
nsTableFrame* firstTableInFlow =
static_cast<nsTableFrame*>(aTableFrame.FirstInFlow());
nsTableRowFrame* row =
static_cast<nsTableRowFrame*>(firstCellInFlow->GetParent());
nsTableRowGroupFrame* firstRGInFlow =
static_cast<nsTableRowGroupFrame*>(row->GetParent());
int32_t rowIndex;
firstCellInFlow->GetRowIndex(rowIndex);
int32_t rowSpan = aTableFrame.GetEffectiveRowSpan(*firstCellInFlow);
nscoord computedBSize = firstTableInFlow->GetRowSpacing(rowIndex,
rowIndex + rowSpan - 1);
computedBSize -= aBlockDirBorderPadding;
int32_t rowX;
for (row = firstRGInFlow->GetFirstRow(), rowX = 0; row; row = row->GetNextRow(), rowX++) {
if (rowX > rowIndex + rowSpan - 1) {
break;
}
else if (rowX >= rowIndex) {
computedBSize += row->GetUnpaginatedBSize();
}
}
return computedBSize;
}
nscoord
GetHeightOfRowsSpannedBelowFirst(nsTableCellFrame& aTableCellFrame,
nsTableFrame& aTableFrame)
{
nscoord height = 0;
nscoord cellSpacingY = aTableFrame.GetCellSpacingY();
PRInt32 rowSpan = aTableFrame.GetEffectiveRowSpan(aTableCellFrame);
// add in height of rows spanned beyond the 1st one
nsIFrame* nextRow = aTableCellFrame.GetParent()->GetNextSibling();
for (PRInt32 rowX = 1; ((rowX < rowSpan) && nextRow);) {
if (nsGkAtoms::tableRowFrame == nextRow->GetType()) {
height += nextRow->GetSize().height;
rowX++;
}
height += cellSpacingY;
nextRow = nextRow->GetNextSibling();
}
return height;
}
// Calculates the available width for the table cell based on the known
// column widths taking into account column spans and column spacing
static nscoord
CalcAvailWidth(nsTableFrame& aTableFrame,
nsTableCellFrame& aCellFrame,
nscoord aCellSpacingX)
{
nscoord cellAvailWidth = 0;
PRInt32 colIndex;
aCellFrame.GetColIndex(colIndex);
PRInt32 colspan = aTableFrame.GetEffectiveColSpan(aCellFrame);
NS_ASSERTION(colspan > 0, "effective colspan should be positive");
for (PRInt32 spanX = 0; spanX < colspan; spanX++) {
cellAvailWidth += aTableFrame.GetColumnWidth(colIndex + spanX);
if (spanX > 0 &&
aTableFrame.ColumnHasCellSpacingBefore(colIndex + spanX)) {
cellAvailWidth += aCellSpacingX;
}
}
return cellAvailWidth;
}