/// <summary>
/// Get the opacity value for the specified property
/// </summary>
private double GetAlpha(string name)
{
var alpha1 = cssStyleCascade.GetDoubleFromTop($"{name}-opacity", 1);
double alpha2 = cssStyleCascade.GetDoubleFromTop("opacity", 1);
var alpha = alpha1 * alpha2;
return(alpha);
}
/// <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);
}