private double getRowThickness(PdfOutput output, Row r)
        {
            double rowThickness;

            if (r is RegularRow)
            {
                string[] rowVals = ((RegularRow)r).contents;
                rowThickness = minimumRowThickness;
                if (r.fixedThickness > 0)
                {
                    rowThickness = r.fixedThickness;
                }
                else
                {
                    for (int col = 0; col < columnCount; col++)
                    {
                        double height = output.GetWrappedTextHeight(
                            r.font, r.fontSize,
                            bordersX[col] + cellPaddingLeft,
                            output.drawY - cellContentsDy,
                            bordersX[col + 1] - bordersX[col] - cellPaddingRight,
                            TextJustify.Left,
                            rowVals[col] == null ? "N/A" : rowVals[col]);
                        height += cellContentsDy + cellPaddingBottom;
                        if (height > rowThickness)
                        {
                            rowThickness = height;
                        }
                    }
                }
            }
            else
            {
                string content = ((MergedRow)r).contents;
                if (r.fixedThickness > 0)
                {
                    rowThickness = r.fixedThickness;
                }
                else
                {
                    double height = output.GetWrappedTextHeight(
                        r.font, r.fontSize,
                        bordersX[0] + cellPaddingLeft,
                        output.drawY - cellContentsDy,
                        bordersX[columnCount] - bordersX[0] - cellPaddingRight,
                        TextJustify.Left,
                        content);
                    height      += cellContentsDy + cellPaddingBottom;
                    rowThickness = Math.Max(height, minimumRowThickness);
                }
            }

            return(rowThickness);
        }