private double DoGetXUnitValue(double?totalValue, XGraphicsUnit type)
{
XUnit value;
switch (Unit)
{
case EUnit.Millimeter:
value = new XUnit(Value, XGraphicsUnit.Millimeter);
break;
case EUnit.Centimeter:
value = new XUnit(Value, XGraphicsUnit.Centimeter);
break;
case EUnit.Inch:
value = new XUnit(Value, XGraphicsUnit.Inch);
break;
case EUnit.Percentage:
if (totalValue == null)
{
throw new InvalidOperationException("When unit type percentage is used, the totalValue needs to be provided.");
}
//Calculate the actual value, using provided total value
value = Value / 100 * totalValue.Value;
break;
case EUnit.Point:
value = Value;
break;
default:
throw new InvalidOperationException(string.Format("Unknown unit {0}", Unit));
}
value.ConvertType(type);
return(value.Value);
}