/// <summary>Calculates the text rise value for <sup> and <sub> tags.</summary>
/// <param name="stylesContainer">the styles container</param>
/// <param name="vAlignVal">the vertical alignment value</param>
/// <returns>the calculated text rise</returns>
private static float CalcTextRiseForSupSub(IStylesContainer stylesContainer, String vAlignVal)
{
float parentFontSize = GetParentFontSize(stylesContainer);
String superscriptPosition = "33%";
String subscriptPosition = "-20%";
String relativeValue = CssConstants.SUPER.Equals(vAlignVal) ? superscriptPosition : subscriptPosition;
return(CssDimensionParsingUtils.ParseRelativeValue(relativeValue, parentFontSize));
}
/// <summary>Calculates text rise for percentage value text rise.</summary>
/// <param name="stylesContainer">the styles container</param>
/// <param name="rootFontSize">the root font size</param>
/// <param name="vAlignVal">the vertical alignment value</param>
/// <returns>the calculated text rise</returns>
private static float CalcTextRiseForPercentageValue(IStylesContainer stylesContainer, float rootFontSize,
String vAlignVal)
{
String ownFontSizeStr = stylesContainer.GetStyles().Get(CssConstants.FONT_SIZE);
float fontSize = CssDimensionParsingUtils.ParseAbsoluteLength(ownFontSizeStr);
String lineHeightStr = stylesContainer.GetStyles().Get(CssConstants.LINE_HEIGHT);
float lineHeightActualValue = GetLineHeightActualValue(fontSize, rootFontSize, lineHeightStr);
return(CssDimensionParsingUtils.ParseRelativeValue(vAlignVal, lineHeightActualValue));
}