/// <summary>
/// Apply percent unit conversion to the given value
/// </summary>
private bool ApplyPercent(ref double dblVal, string unit, PercentBaseSelector percentBaseSelector)
{
if (unit != "%")
{
return(false);
}
dblVal /= 100.0;
var viewBox = cssStyleCascade.GetCurrentViewBox().ViewBox;
switch (percentBaseSelector)
{
case PercentBaseSelector.ViewBoxWidth:
dblVal = viewBox.Width * dblVal;
break;
case PercentBaseSelector.ViewBoxHeight:
dblVal = viewBox.Height * dblVal;
break;
case PercentBaseSelector.ViewBoxDiagonal:
dblVal = Math.Sqrt(viewBox.Width * viewBox.Width + viewBox.Height * viewBox.Height) * dblVal;
break;
}
return(true);
}
/// <summary>
/// Get a list of length or percent
/// </summary>
public List <double> GetLengthPercentList(string strVal, PercentBaseSelector percentBaseSelector)
{
strVal = strVal.Trim();
var splits = listDelimiter.Split(strVal);
var dbls = new List <double>();
for (int i = 0; i < splits.Length; i += 2)
{
var dbl = GetLengthPercent(splits[i], percentBaseSelector);
dbls.Add(dbl);
}
return(dbls);
}
/// <summary>
/// Get a LengthPercentAuto
/// </summary>
public DoubleLengthPercentAuto GetLengthPercentAuto(string strVal, PercentBaseSelector percentBaseSelector)
{
DoubleLengthPercentAuto retVal = new DoubleLengthPercentAuto();
if (strVal == null || strVal == "auto")
{
retVal.IsAuto = true;
}
else
{
retVal.Value = GetLengthPercent(strVal, percentBaseSelector);
}
return(retVal);
}
public double GetLengthPercent(string strVal, PercentBaseSelector percentBaseSelector)
{
var(dblVal, unit) = SplitNumberUnit(strVal);
if (ApplyLength(ref dblVal, unit))
{
return(dblVal);
}
if (ApplyPercent(ref dblVal, unit, percentBaseSelector))
{
return(dblVal);
}
throw new ArgumentException("unknown unit");
}
/// <summary>
/// Get a LengthPercentAuto attribute
/// </summary>
public static DoubleLengthPercentAuto GetLengthPercentAuto(this DoubleParser doubleParser, XElement element, string attrName, PercentBaseSelector percentBaseSelector)
{
XAttribute xAttr = element.Attribute(attrName);
return(doubleParser.GetLengthPercentAuto(xAttr?.Value, percentBaseSelector));
}
/// <summary>
/// Get a LengthPercent
/// </summary>
public static double GetLengthPercent(this DoubleParser doubleParser, XElement element, string attrName, double defaultValue, PercentBaseSelector percentBaseSelector)
{
double retVal = defaultValue;
XAttribute xAttr = element.Attribute(attrName);
if (xAttr != null)
{
retVal = doubleParser.GetLengthPercent(xAttr.Value, percentBaseSelector);
}
return(retVal);
}
/// <summary>
/// Get a double attribute, if it doesn't exist it defaults to 0
/// </summary>
private double GetLengthPercentAttr(XElement path, string attrName, PercentBaseSelector percentBaseSelector)
{
return(doubleParser.GetLengthPercent(path, attrName, 0.0, percentBaseSelector));
}