/// <summary>
/// Set the clipping of the group
/// </summary>
public static void SetClipPath(GraphicGroup group,
Matrix currentTransformationMatrix,
CssStyleCascade cssStyleCascade,
Dictionary <string, XElement> globalDefinitions)
{
var clipPath = cssStyleCascade.GetPropertyFromTop("clip-path");
if (string.IsNullOrEmpty(clipPath))
{
return;
}
if (!clipPath.StartsWith("url(", StringComparison.OrdinalIgnoreCase))
{
return;
}
int endUri = clipPath.IndexOf(")", StringComparison.OrdinalIgnoreCase);
var uri = clipPath.Substring(4, endUri - 4);
uri = uri.Trim();
var id = uri.Substring(1);
if (!globalDefinitions.ContainsKey(id))
{
return;
}
var clipElem = globalDefinitions[id];
// richt now we support only a single path for the clip geometry
var shapeElement = clipElem.Elements().First();
if (shapeElement == null)
{
return;
}
var clipGeometry = GeometryParser.Parse(shapeElement, currentTransformationMatrix);
clipGeometry.FillRule = GraphicFillRule.NoneZero;
var clipRule = cssStyleCascade.GetProperty("clip-rule");
if (!string.IsNullOrEmpty(clipRule))
{
switch (clipRule)
{
case "evenodd":
clipGeometry.FillRule = GraphicFillRule.EvenOdd;
break;
case "nonzero":
clipGeometry.FillRule = GraphicFillRule.NoneZero;
break;
}
}
group.Clip = clipGeometry;
}
/// <summary>
/// Constructor
/// </summary>
public Clipping(CssStyleCascade cssStyleCascade,
Dictionary <string, XElement> globalDefinitions,
GeometryParser geometryParser,
GeometryTextParser textParser)
{
this.cssStyleCascade = cssStyleCascade;
this.globalDefinitions = globalDefinitions;
this.geometryParser = geometryParser;
this.textParser = textParser;
}