private void RenderGeometory(CanvasDrawingSession session, CanvasGeometry geometry, SvgMatrix transform, CssStyleDeclaration style)
{
bool change = false;
var geometry2 = geometry;
CanvasSolidColorBrush opacityBrush = null;
try
{
using (var t = TransformSession.CreateTransformSession(session, transform))
{
var clipPath = style.ClipPath;
if (clipPath != null)
{
if (clipPath.Uri[0] != '#')
{
throw new ArgumentException();
}
var clipPathElement = (SvgClipPathElement)this.TargetDocument.GetElementById(clipPath.Uri.Substring(1));
var clipGeometory = this.CreateClipPath(session, clipPathElement);
geometry2 = geometry.CombineWith(
clipGeometory,
new Matrix3x2 {
M11 = 1.0F, M12 = 0.0F, M21 = 0.0F, M22 = 1.0F, M31 = 0.0F, M32 = 0.0F
},
CanvasGeometryCombine.Intersect,
CanvasGeometry.ComputeFlatteningTolerance(session.Dpi, 1.0F, session.Transform));
change = true;
}
var area = geometry2.ComputeBounds();
var opacity = style.Opacity;
if (opacity != null)
{
opacityBrush = this.CreateOpacity(session, opacity.Value);
}
var fill = style.Fill;
if (fill == null || fill != null && fill.PaintType != SvgPaintType.None)
{
var pen = this.CreatePaint(session, area, fill, style.FillOpacity, style);
if (opacityBrush == null)
{
session.FillGeometry(geometry2, pen);
}
else
{
session.FillGeometry(geometry2, pen, opacityBrush);
}
}
var stroke = style.Stroke;
if (stroke != null && stroke.PaintType != SvgPaintType.None)
{
var pen = this.CreatePaint(session, area, stroke, style.StrokeOpacity, style);
var strokeWidth = this.LengthConverter.Convert(style.StrokeWidth, 1.0F);
using (var strokeStyle = this.CreateStrokeStyle(style))
{
session.DrawGeometry(geometry2, pen, strokeWidth, strokeStyle);
}
}
}
}
finally
{
if (change)
{
geometry2.Dispose();
}
if (opacityBrush != null)
{
opacityBrush.Dispose();
}
}
}
private ICanvasBrush CreatePaint(CanvasDrawingSession session, Rect area, SvgPaint paint, SvgNumber?opacity, CssStyleDeclaration style)
{
if (paint == null || paint.PaintType == SvgPaintType.RgbColor)
{
var alpha = (byte)(255.0F * (opacity?.Value ?? 1.0F));
var code = paint == null ? alpha << 24 : alpha << 24 | paint.RgbColor.Red << 16 | paint.RgbColor.Green << 8 | paint.RgbColor.Blue;
if (this.SolidResourceCache.ContainsKey(code))
{
return(this.SolidResourceCache[code]);
}
var brush = new CanvasSolidColorBrush(this.ResourceCreator, paint?.ToPlatformColor(alpha) ?? Color.FromArgb(alpha, 0, 0, 0));
this.DisposableObjects.Add(brush);
this.SolidResourceCache.Add(code, brush);
return(brush);
}
if (paint.PaintType == SvgPaintType.CurrentColor)
{
var color = style.Color;
var alpha = (byte)(255.0F * (opacity?.Value ?? 1.0F));
var code = alpha << 24 | color.RgbColor.Red << 16 | color.RgbColor.Green << 8 | color.RgbColor.Blue;
if (this.SolidResourceCache.ContainsKey(code))
{
return(this.SolidResourceCache[code]);
}
var brush = new CanvasSolidColorBrush(this.ResourceCreator, color.ToPlatformColor(alpha));
this.DisposableObjects.Add(brush);
this.SolidResourceCache.Add(code, brush);
return(brush);
}
if (paint.PaintType == SvgPaintType.Uri && paint.Uri[0] == '#')
{
var key = paint.Uri.Substring(1);
var grad = this.TargetDocument.GetElementById(key);
if (grad.GetType() == typeof(SvgLinearGradientElement))
{
return(this.CreateLinearGradient(session, area, (SvgLinearGradientElement)grad));
}
if (grad.GetType() == typeof(SvgRadialGradientElement))
{
return(this.CreateRadialGradient(session, area, (SvgRadialGradientElement)grad));
}
}
throw new NotImplementedException();
}
