/// <summary>
/// 获取画刷
/// </summary>
/// <returns>画刷</returns>
private Brush GetBrush()
{
double x1 = this.GetAttributeValue <SVGDouble>("x1", false, SVGDouble.Zero).GetValue(1);
double y1 = this.GetAttributeValue <SVGDouble>("y1", false, SVGDouble.Zero).GetValue(1);
double x2 = this.GetAttributeValue <SVGDouble>("x2", false, SVGDouble.One).GetValue(1);
double y2 = this.GetAttributeValue <SVGDouble>("y2", false, SVGDouble.Zero).GetValue(1);
SVGGradientUnits gradientUnits = this.GetAttributeValue <SVGGradientUnits>("gradientUnits");
SVGTransform transform = this.GetAttributeValue <SVGTransform>("gradientTransform");
SVGSpreadMethod spreadMethod = this.GetAttributeValue <SVGSpreadMethod>("spreadMethod");
LinearGradientBrush brush = new LinearGradientBrush();
brush.StartPoint = new System.Windows.Point(x1, y1);
brush.EndPoint = new System.Windows.Point(x2, y2);
foreach (SVGElement item in this.Children)
{
Stop stop = item as Stop;
if (stop == null)
{
continue;
}
double offset = stop.GetAttributeValue <SVGDouble>("offset").GetValue(1);
double opacity = stop.GetAttributeValue <SVGDouble>("stop-opacity", false, SVGDouble.One).GetValue(1);
SVGColor color = stop.GetAttributeValue <SVGColor>("stop-color");
GradientStop gs = new GradientStop();
gs.Offset = offset;
if (color != null)
{
Color c = color.Value;
c.A = (byte)(opacity * 255);
gs.Color = c;
}
brush.GradientStops.Add(gs);
}
if (transform != null && transform.Value != null && transform.Value.Count > 0)
{
TransformGroup group = new TransformGroup();
foreach (Transform item in transform.Value)
{
group.Children.Add(item);
}
brush.Transform = group;
}
if (gradientUnits != null)
{
brush.MappingMode = gradientUnits.Value;
}
if (spreadMethod != null)
{
brush.SpreadMethod = spreadMethod.Value;
}
return(brush);
}