private void RenderPath(WpfDrawingRenderer renderer)
{
WpfDrawingContext context = renderer.Context;
SvgRenderingHint hint = _svgElement.RenderingHint;
if (hint != SvgRenderingHint.Shape || hint == SvgRenderingHint.Clipping)
{
return;
}
var parentNode = _svgElement.ParentNode;
// We do not directly render the contents of the clip-path, unless specifically requested...
if (string.Equals(parentNode.LocalName, "clipPath") &&
!context.RenderingClipRegion)
{
return;
}
SvgStyleableElement styleElm = (SvgStyleableElement)_svgElement;
//string sVisibility = styleElm.GetPropertyValue("visibility");
//string sDisplay = styleElm.GetPropertyValue("display");
//if (string.Equals(sVisibility, "hidden") || string.Equals(sDisplay, "none"))
//{
// return;
//}
DrawingGroup drawGroup = context.Peek();
Debug.Assert(drawGroup != null);
Geometry geometry = CreateGeometry(_svgElement, context.OptimizePath);
string elementId = this.GetElementName();
string elementClass = this.GetElementClass();
GeometryDrawing drawing = null;
if (geometry == null || geometry.IsEmpty())
{
return;
}
var bounds = geometry.Bounds;
if (string.Equals(_svgElement.LocalName, "line", StringComparison.Ordinal))
{
_isLineSegment = true;
}
else if (string.Equals(_svgElement.LocalName, "rect", StringComparison.Ordinal))
{
_isLineSegment = bounds.Width.Equals(0) || bounds.Height.Equals(0);
}
else if (string.Equals(_svgElement.LocalName, "path", StringComparison.Ordinal))
{
_isLineSegment = bounds.Width.Equals(0) || bounds.Height.Equals(0);
}
context.UpdateBounds(geometry.Bounds);
// SetClip(context);
WpfSvgPaint fillPaint = new WpfSvgPaint(context, styleElm, "fill");
string fileValue = styleElm.GetAttribute("fill");
Brush brush = fillPaint.GetBrush(geometry, _setBrushOpacity);
bool isFillTransmable = fillPaint.IsFillTransformable;
WpfSvgPaint strokePaint = new WpfSvgPaint(context, styleElm, "stroke");
Pen pen = strokePaint.GetPen(geometry, _setBrushOpacity);
// By the SVG Specifications:
// Keyword 'objectBoundingBox' should not be used when the geometry of the applicable
// element has no width or no height, such as the case of a horizontal or vertical line,
// even when the line has actual thickness when viewed due to having a non-zero stroke
// width since stroke width is ignored for bounding box calculations. When the geometry
// of the applicable element has no width or height and 'objectBoundingBox' is specified,
// then the given effect (e.g., a gradient) will be ignored.
if (pen != null && _isLineSegment && strokePaint.FillType == WpfFillType.Gradient)
{
WpfGradientFill gradientFill = (WpfGradientFill)strokePaint.PaintServer;
if (gradientFill.IsUserSpace == false)
{
bool invalidGrad = false;
if (string.Equals(_svgElement.LocalName, "line", StringComparison.Ordinal))
{
LineGeometry lineGeometry = geometry as LineGeometry;
if (lineGeometry != null)
{
invalidGrad = SvgObject.IsEqual(lineGeometry.EndPoint.X, lineGeometry.StartPoint.X) ||
SvgObject.IsEqual(lineGeometry.EndPoint.Y, lineGeometry.StartPoint.Y);
}
}
else
{
invalidGrad = true;
}
if (invalidGrad)
{
// Brush is not likely inherited, we need to support fallback too
WpfSvgPaint fallbackPaint = strokePaint.WpfFallback;
if (fallbackPaint != null)
{
pen.Brush = fallbackPaint.GetBrush(geometry, _setBrushOpacity);
}
else
{
var scopePaint = strokePaint.GetScopeStroke();
if (scopePaint != null)
{
if (scopePaint != strokePaint)
{
pen.Brush = scopePaint.GetBrush(geometry, _setBrushOpacity);
}
else
{
pen.Brush = null;
}
}
else
{
pen.Brush = null;
}
}
}
}
}
if (_paintContext != null)
{
_paintContext.Fill = fillPaint;
_paintContext.Stroke = strokePaint;
_paintContext.Tag = geometry;
}
if (brush != null || pen != null)
{
Transform transform = this.Transform;
if (transform != null && !transform.Value.IsIdentity)
{
geometry.Transform = transform;
if (brush != null && isFillTransmable)
{
Transform brushTransform = brush.Transform;
if (brushTransform == null || brushTransform == Transform.Identity)
{
brush.Transform = transform;
}
else
{
TransformGroup groupTransform = new TransformGroup();
groupTransform.Children.Add(brushTransform);
groupTransform.Children.Add(transform);
brush.Transform = groupTransform;
}
}
if (pen != null && pen.Brush != null)
{
Transform brushTransform = pen.Brush.Transform;
if (brushTransform == null || brushTransform == Transform.Identity)
{
pen.Brush.Transform = transform;
}
else
{
TransformGroup groupTransform = new TransformGroup();
groupTransform.Children.Add(brushTransform);
groupTransform.Children.Add(transform);
pen.Brush.Transform = groupTransform;
}
}
}
else
{
transform = null; // render any identity transform useless...
}
drawing = new GeometryDrawing(brush, pen, geometry);
if (!string.IsNullOrWhiteSpace(elementId) && !context.IsRegisteredId(elementId))
{
SvgObject.SetName(drawing, elementId);
context.RegisterId(elementId);
if (context.IncludeRuntime)
{
SvgObject.SetId(drawing, elementId);
}
}
if (!string.IsNullOrWhiteSpace(elementClass) && context.IncludeRuntime)
{
SvgObject.SetClass(drawing, elementClass);
}
Brush maskBrush = this.Masking;
Geometry clipGeom = this.ClipGeometry;
if (clipGeom != null || maskBrush != null)
{
//Geometry clipped = Geometry.Combine(geometry, clipGeom,
// GeometryCombineMode.Exclude, null);
//if (clipped != null && !clipped.IsEmpty())
//{
// geometry = clipped;
//}
DrawingGroup clipMaskGroup = new DrawingGroup();
Rect geometryBounds = geometry.Bounds;
if (clipGeom != null)
{
clipMaskGroup.ClipGeometry = clipGeom;
SvgUnitType clipUnits = this.ClipUnits;
if (clipUnits == SvgUnitType.ObjectBoundingBox)
{
Rect drawingBounds = geometryBounds;
if (transform != null)
{
drawingBounds = transform.TransformBounds(drawingBounds);
}
TransformGroup transformGroup = new TransformGroup();
// Scale the clip region (at (0, 0)) and translate to the top-left corner of the target.
transformGroup.Children.Add(new ScaleTransform(drawingBounds.Width, drawingBounds.Height));
transformGroup.Children.Add(new TranslateTransform(drawingBounds.X, drawingBounds.Y));
clipGeom.Transform = transformGroup;
}
else
{
if (transform != null)
{
clipGeom.Transform = transform;
}
}
}
if (maskBrush != null)
{
DrawingBrush drawingBrush = (DrawingBrush)maskBrush;
SvgUnitType maskUnits = this.MaskUnits;
SvgUnitType maskContentUnits = this.MaskContentUnits;
if (maskUnits == SvgUnitType.ObjectBoundingBox)
{
Rect drawingBounds = geometryBounds;
if (transform != null)
{
drawingBounds = transform.TransformBounds(drawingBounds);
}
DrawingGroup maskGroup = drawingBrush.Drawing as DrawingGroup;
if (maskGroup != null)
{
DrawingCollection maskDrawings = maskGroup.Children;
for (int i = 0; i < maskDrawings.Count; i++)
{
Drawing maskDrawing = maskDrawings[i];
GeometryDrawing maskGeomDraw = maskDrawing as GeometryDrawing;
if (maskGeomDraw != null)
{
if (maskGeomDraw.Brush != null)
{
ConvertColors(maskGeomDraw.Brush);
}
if (maskGeomDraw.Pen != null)
{
ConvertColors(maskGeomDraw.Pen.Brush);
}
}
}
}
if (maskContentUnits == SvgUnitType.ObjectBoundingBox)
{
TransformGroup transformGroup = new TransformGroup();
// Scale the clip region (at (0, 0)) and translate to the top-left corner of the target.
var scaleTransform = new ScaleTransform(drawingBounds.Width, drawingBounds.Height);
transformGroup.Children.Add(scaleTransform);
var translateTransform = new TranslateTransform(drawingBounds.X, drawingBounds.Y);
transformGroup.Children.Add(translateTransform);
Matrix scaleMatrix = new Matrix();
Matrix translateMatrix = new Matrix();
scaleMatrix.Scale(drawingBounds.Width, drawingBounds.Height);
translateMatrix.Translate(drawingBounds.X, drawingBounds.Y);
Matrix matrix = Matrix.Multiply(scaleMatrix, translateMatrix);
//maskBrush.Transform = transformGroup;
maskBrush.Transform = new MatrixTransform(matrix);
}
else
{
drawingBrush.Viewbox = drawingBounds;
drawingBrush.ViewboxUnits = BrushMappingMode.Absolute;
drawingBrush.Stretch = Stretch.Uniform;
drawingBrush.Viewport = drawingBounds;
drawingBrush.ViewportUnits = BrushMappingMode.Absolute;
}
}
else
{
if (transform != null)
{
maskBrush.Transform = transform;
}
}
clipMaskGroup.OpacityMask = maskBrush;
}
clipMaskGroup.Children.Add(drawing);
drawGroup.Children.Add(clipMaskGroup);
}
else
{
drawGroup.Children.Add(drawing);
}
}
// If this is not the child of a "marker", then try rendering a marker...
if (!string.Equals(parentNode.LocalName, "marker"))
{
RenderMarkers(renderer, styleElm, context);
}
// Register this drawing with the Drawing-Document...
if (drawing != null)
{
this.Rendered(drawing);
}
}