public static float GetActualBorderWidth(CssLength borderValue, IHasEmHeight b)
{
//------------------------------
//plan: use extended cssunit
//------------------------------
switch (borderValue.UnitOrNames)
{
case CssUnitOrNames.EmptyValue: //as medium
case CssUnitOrNames.BorderMedium:
return(2f);
case CssUnitOrNames.BorderThin:
return(1f);
case CssUnitOrNames.BorderThick:
return(4f);
default:
return(Math.Abs(ConvertToPx(borderValue, 1, b)));
}
}
/// <summary>
/// get length in pixel
/// </summary>
/// <param name="length"></param>
/// <param name="hundredPercent"></param>
/// <param name="box"></param>
/// <returns></returns>
public static float ConvertToPx(CssLength length, float hundredPercent, IHasEmHeight box)
{
//Return zero if no length specified, zero specified
switch (length.UnitOrNames)
{
case CssUnitOrNames.EmptyValue:
return(0);
case CssUnitOrNames.Percent:
return((length.Number / 100f) * hundredPercent);
case CssUnitOrNames.Ems:
return(length.Number * box.GetEmHeight());
case CssUnitOrNames.Ex:
return(length.Number * (box.GetEmHeight() / 2));
case CssUnitOrNames.Pixels:
//atodo: check support for hi dpi
return(length.Number);
case CssUnitOrNames.Milimeters:
return(length.Number * 3.779527559f); //3 pixels per millimeter
case CssUnitOrNames.Centimeters:
return(length.Number * 37.795275591f); //37 pixels per centimeter
case CssUnitOrNames.Inches:
return(length.Number * 96f); //96 pixels per inch
case CssUnitOrNames.Points:
return(length.Number * (96f / 72f)); // 1 point = 1/72 of inch
case CssUnitOrNames.Picas:
return(length.Number * 16f); // 1 pica = 12 points
default:
return(0);
}
}
