/// <summary>
/// Parse all graphic elements
/// </summary>
private GraphicGroup ParseGroup(XNamespace ns, XElement groupElement, Matrix matrix)
{
var group = new GraphicGroup();
cssStyleCascade.PushStyles(groupElement);
Matrix currentTransformationMatrix = matrix;
var transform = cssStyleCascade.GetPropertyFromTop("transform");
if (!string.IsNullOrEmpty(transform))
{
var transformMatrix = TransformMatrixParser.GetTransformMatrix(transform);
currentTransformationMatrix = transformMatrix * currentTransformationMatrix;
}
Clipping.SetClipPath(group, currentTransformationMatrix, cssStyleCascade, globalDefinitions);
group.Opacity = cssStyleCascade.GetDoubleFromTop("opacity", 1);
var shapeParser = new ShapeParser();
foreach (var element in groupElement.Elements())
{
switch (element.Name.LocalName)
{
case "defs":
case "style":
// already read, ignore
break;
case "g":
case "svg":
{
var childGroup = ParseGroup(ns, element, currentTransformationMatrix);
group.Childreen.Add(childGroup);
break;
}
default:
{
var shape = shapeParser.Parse(element, ns, currentTransformationMatrix, cssStyleCascade, globalDefinitions);
if (shape != null)
{
group.Childreen.Add(shape);
}
break;
}
}
}
cssStyleCascade.Pop();
return(group);
}
/// <summary>
/// Get the transformation matrix from top of the cascade
/// </summary>
/// <returns></returns>
public static Matrix GetTransformMatrixFromTop(this CssStyleCascade cssStyleCascade)
{
var transform = cssStyleCascade.GetPropertyFromTop("transform");
if (!string.IsNullOrEmpty(transform))
{
return(TransformMatrixParser.GetTransformMatrix(transform));
}
return(Matrix.Identity);
}
/// <summary>
/// Get the transformation matrix of the element
/// </summary>
private Matrix GetTransformMatrix(XElement gradientElem)
{
Matrix matrix = Matrix.Identity;
var attrs = gradientElem.Attribute("gradientTransform");
if (attrs != null)
{
matrix = TransformMatrixParser.GetTransformMatrix(attrs.Value);
}
return(matrix);
}
/// <summary>
/// Parse a single SVG shape
/// </summary>
public GraphicVisual Parse(XElement shape,
XNamespace svgNamespace,
Matrix currentTransformationMatrix,
CssStyleCascade cssStyleCascade,
Dictionary <string, XElement> globalDefinitions)
{
GraphicVisual graphicVisual = null;
cssStyleCascade.PushStyles(shape);
var transform = cssStyleCascade.GetPropertyFromTop("transform");
if (!string.IsNullOrEmpty(transform))
{
var transformMatrix = TransformMatrixParser.GetTransformMatrix(transform);
currentTransformationMatrix = transformMatrix * currentTransformationMatrix;
}
var geometry = GeometryParser.Parse(shape, currentTransformationMatrix);
if (geometry != null)
{
var graphicPath = new GraphicPath();
graphicPath.Geometry = geometry;
graphicVisual = graphicPath;
this.svgNamespace = svgNamespace;
this.globalDefinitions = globalDefinitions;
this.currentTransformationMatrix = currentTransformationMatrix;
this.cssStyleCascade = cssStyleCascade;
SetFillAndStroke(shape, graphicPath);
if (Clipping.IsClipPathSet(cssStyleCascade))
{
// shapes don't support clipping, create a group around it
var group = new GraphicGroup();
graphicVisual = group;
group.Childreen.Add(graphicPath);
Clipping.SetClipPath(group, currentTransformationMatrix, cssStyleCascade, globalDefinitions);
}
cssStyleCascade.Pop();
}
return(graphicVisual);
}
