/// <summary>
/// Constructs a <see cref="RadialGradientBrush"/> from the specified <paramref name="source"/>.
/// </summary>
/// <param name="source">A string representation of a <see cref="RadialGradientBrush"/>.</param>
/// <returns>The equivalent <see cref="RadialGradientBrush"/>.</returns>
/// <remarks>Format: RadialGradient [<center> [<gradient_origin>]] [<radius_x> <radius_y>] (<stop_color>","<stop_offset> ){2..n}</remarks>
public static RadialGradientBrush Parse(string source)
{
Match bodyMatch = Regex.Match(source, RadialGradientParsingPattern, RegexOptions.IgnoreCase);
if (!bodyMatch.Success)
{
throw new ArgumentException("Radial gradient literal is not valid.");
}
GradientStopCollection gradientStopCollection;
if (bodyMatch.Groups.ContainsKey("stops"))
{
gradientStopCollection = GradientStopCollection.Parse(bodyMatch.Groups["stops"].Value);
}
else
{
throw new ArgumentException("Radial gradient literal does not define any gradient stops.");
}
RadialGradientBrush radialGradientBrush = new RadialGradientBrush(gradientStopCollection);
if (bodyMatch.Groups.ContainsKey("center"))
{
radialGradientBrush.Center = Point.Parse(bodyMatch.Groups["center"].Value);
}
if (bodyMatch.Groups.ContainsKey("gradient_origin"))
{
radialGradientBrush.GradientOrigin = Point.Parse(bodyMatch.Groups["gradient_origin"].Value);
}
if (bodyMatch.Groups.ContainsKey("radius_x"))
{
double radiusX = Convert.ToDouble(bodyMatch.Groups["radius_x"].Value);
radialGradientBrush.RadiusX = radiusX;
}
if (bodyMatch.Groups.ContainsKey("radius_y"))
{
double radiusY = Convert.ToDouble(bodyMatch.Groups["radius_y"].Value);
radialGradientBrush.RadiusY = radiusY;
}
return(radialGradientBrush);
}
/// <summary>
/// Constructs a <see cref="LinearGradientBrush"/> from the specified <paramref name="source"/>.
/// </summary>
/// <param name="source">A string representation of a <see cref="LinearGradientBrush"/>.</param>
/// <returns>The equivalent <see cref="LinearGradientBrush"/>.</returns>
/// <remarks>Format: LinearGradient (<start_point> [<end_point>])|(<angle>["deg"]) (<stop_color>","<stop_offset> ){2..n}</remarks>
public static LinearGradientBrush Parse(string source)
{
Match bodyMatch = Regex.Match(source, LinearGradientParsingPattern, RegexOptions.IgnoreCase);
if (!bodyMatch.Success)
{
throw new ArgumentException("Linear gradient literal is not valid.");
}
GradientStopCollection gradientStopCollection;
if (bodyMatch.Groups.ContainsKey("stops"))
{
gradientStopCollection = GradientStopCollection.Parse(bodyMatch.Groups["stops"].Value);
}
else
{
throw new ArgumentException("Linear gradient literal does not define any gradient stops.");
}
LinearGradientBrush linearGradientBrush;
if (bodyMatch.Groups.ContainsKey("angle"))
{
double angle = Convert.ToDouble(bodyMatch.Groups["angle"].Value);
linearGradientBrush = new LinearGradientBrush(gradientStopCollection, angle);
}
else
{
Point startPoint = Point.Parse(bodyMatch.Groups["start_point"].Value);
Point endPoint = new Point(1, 1);
if (bodyMatch.Groups.ContainsKey("end_point"))
{
endPoint = Point.Parse(bodyMatch.Groups["end_point"].Value);
}
linearGradientBrush = new LinearGradientBrush(gradientStopCollection, startPoint, endPoint);
}
return(linearGradientBrush);
}
