public PDFGradientBrush(PDFGradientDescriptor descriptor)
{
this.Descriptor = descriptor;
}
/// <summary>
/// Attempts to parse a css style gradient string into a specific gradient descriptor
/// </summary>
/// <param name="value">The string to parse e.g. radial-gradient(red, green)</param>
/// <param name="descriptor">Set to the parsed descriptor value</param>
/// <returns>True if the gradient was parsed correctly</returns>
public static bool TryParse(string value, out PDFGradientDescriptor descriptor)
{
descriptor = null;
if (null == value)
{
return(false);
}
value = value.Trim();
if (string.IsNullOrEmpty(value))
{
return(false);
}
else if (value.StartsWith("linear-gradient"))
{
value = value.Substring("linear-gradient".Length).Trim();
PDFGradientLinearDescriptor linear;
if (value.StartsWith("(") && value.EndsWith(")") && PDFGradientLinearDescriptor.TryParseLinear(value.Substring(1, value.Length - 2), out linear))
{
linear.Repeating = false;
descriptor = linear;
return(true);
}
}
else if (value.StartsWith("repeating-linear-gradient"))
{
value = value.Substring("repeating-linear-gradient".Length).Trim();
PDFGradientLinearDescriptor linear;
if (value.StartsWith("(") && value.EndsWith(")") && PDFGradientLinearDescriptor.TryParseLinear(value.Substring(1, value.Length - 2), out linear))
{
linear.Repeating = true;
descriptor = linear;
return(true);
}
}
else if (value.StartsWith("radial-gradient"))
{
value = value.Substring("radial-gradient".Length).Trim();
PDFGradientRadialDescriptor radial;
if (value.StartsWith("(") && value.EndsWith(")") && PDFGradientRadialDescriptor.TryParseRadial(value.Substring(1, value.Length - 2), out radial))
{
radial.Repeating = false;
descriptor = radial;
return(true);
}
}
else if (value.StartsWith("repeating-radial-gradient"))
{
value = value.Substring("repeating-radial-gradient".Length).Trim();
PDFGradientRadialDescriptor radial;
if (value.StartsWith("(") && value.EndsWith(")") && PDFGradientRadialDescriptor.TryParseRadial(value.Substring(1, value.Length - 2), out radial))
{
radial.Repeating = true;
descriptor = radial;
return(true);
}
}
return(false);
}
