MigraDoc.Rendering.ParagraphRenderer.CalcVerticalInfo C# (CSharp) Method

    VerticalLineInfo CalcVerticalInfo(XFont font)
    {
      ParagraphFormat paragraphFormat = this.paragraph.Format;
      LineSpacingRule spacingRule = paragraphFormat.LineSpacingRule;
      XUnit lineHeight = 0;

      XUnit descent = FontHandler.GetDescent(font);
      descent = Math.Max(this.currentVerticalInfo.descent, descent);

      XUnit singleLineSpace = font.GetHeight();
      RenderInfo imageRenderInfo = this.CurrentImageRenderInfo;
      if (imageRenderInfo != null)
        singleLineSpace = singleLineSpace - FontHandler.GetAscent(font) + imageRenderInfo.LayoutInfo.ContentArea.Height;

      XUnit inherentLineSpace = Math.Max(this.currentVerticalInfo.inherentlineSpace, singleLineSpace);
      switch (spacingRule)
      {
        case LineSpacingRule.Single:
          lineHeight = singleLineSpace;
          break;

        case LineSpacingRule.OnePtFive:
          lineHeight = 1.5 * singleLineSpace;
          break;

        case LineSpacingRule.Double:
          lineHeight = 2.0 * singleLineSpace;
          break;

        case LineSpacingRule.Multiple:
          lineHeight = this.paragraph.Format.LineSpacing * singleLineSpace;
          break;

        case LineSpacingRule.AtLeast:
          lineHeight = Math.Max(singleLineSpace, paragraph.Format.LineSpacing);
          break;

        case LineSpacingRule.Exactly:
          lineHeight = new XUnit(paragraph.Format.LineSpacing);
          inherentLineSpace = paragraph.Format.LineSpacing.Point;
          break;
      }
      lineHeight = Math.Max(this.currentVerticalInfo.height, lineHeight);
      if (this.MaxElementHeight > 0)
        lineHeight = Math.Min(this.MaxElementHeight - Renderer.Tolerance, lineHeight);

      return new VerticalLineInfo(lineHeight, descent, inherentLineSpace);
    }