/// <summary>
/// Renders the stroke of the <see cref="SvgVisualElement"/> to the specified <see cref="ISvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="ISvgRenderer"/> object to render to.</param>
protected internal override bool RenderStroke(ISvgRenderer renderer)
{
var result = base.RenderStroke(renderer);
var path = this.Path(renderer);
if (this.MarkerStart != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerStart.ToString());
marker.RenderMarker(renderer, this, path.PathPoints[0], path.PathPoints[0], path.PathPoints[1]);
}
if (this.MarkerMid != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerMid.ToString());
for (int i = 1; i <= path.PathPoints.Length - 2; i++)
{
marker.RenderMarker(renderer, this, path.PathPoints[i], path.PathPoints[i - 1], path.PathPoints[i], path.PathPoints[i + 1]);
}
}
if (this.MarkerEnd != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerEnd.ToString());
marker.RenderMarker(renderer, this, path.PathPoints[path.PathPoints.Length - 1], path.PathPoints[path.PathPoints.Length - 2], path.PathPoints[path.PathPoints.Length - 1]);
}
return(result);
}
/// <summary>
/// Renders the stroke of the element to the specified <see cref="ISvgRenderer"/>.
/// Includes rendering of all markers defined in attributes.
/// </summary>
/// <param name="renderer">The <see cref="ISvgRenderer"/> object to render to.</param>
protected internal override bool RenderStroke(ISvgRenderer renderer)
{
var result = base.RenderStroke(renderer);
var path = this.Path(renderer);
var pathLength = path.PointCount;
if (this.MarkerStart != null)
{
var refPoint1 = path.PathPoints[0];
var index = 1;
while (index < pathLength && path.PathPoints[index] == refPoint1)
{
++index;
}
var refPoint2 = path.PathPoints[index];
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerStart.ToString());
marker.RenderMarker(renderer, this, refPoint1, refPoint1, refPoint2, true);
}
if (this.MarkerMid != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerMid.ToString());
int bezierIndex = -1;
for (int i = 1; i <= path.PathPoints.Length - 2; i++)
{
// for Bezier curves, the marker shall only been shown at the last point
if ((path.PathTypes[i] & 7) == 3)
{
bezierIndex = (bezierIndex + 1) % 3;
}
else
{
bezierIndex = -1;
}
if (bezierIndex == -1 || bezierIndex == 2)
{
marker.RenderMarker(renderer, this, path.PathPoints[i], path.PathPoints[i - 1], path.PathPoints[i], path.PathPoints[i + 1]);
}
}
}
if (this.MarkerEnd != null)
{
var index = pathLength - 1;
var refPoint1 = path.PathPoints[index];
--index;
while (index > 0 && path.PathPoints[index] == refPoint1)
{
--index;
}
var refPoint2 = path.PathPoints[index];
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerEnd.ToString());
marker.RenderMarker(renderer, this, refPoint1, refPoint2, path.PathPoints[path.PathPoints.Length - 1], false);
}
return(result);
}
/// <summary>
/// Renders the stroke of the <see cref="SvgVisualElement"/> to the specified <see cref="SvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected internal override void RenderStroke(SvgRenderer renderer)
{
if (this.Stroke != null)
{
float strokeWidth = this.StrokeWidth.ToDeviceValue(renderer, UnitRenderingType.Other, this);
using (Pen pen = new Pen(this.Stroke.GetBrush(this, renderer, this.StrokeOpacity), strokeWidth))
{
if (this.StrokeDashArray != null && this.StrokeDashArray.Count > 0)
{
/* divide by stroke width - GDI behaviour that I don't quite understand yet.*/
pen.DashPattern = this.StrokeDashArray.ConvertAll(u => u.Value / ((strokeWidth <= 0) ? 1 : strokeWidth)).ToArray();
}
var path = this.Path(renderer);
renderer.DrawPath(pen, path);
if (this.MarkerStart != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerStart.ToString());
marker.RenderMarker(renderer, this, path.PathPoints[0], path.PathPoints[0], path.PathPoints[1]);
}
if (this.MarkerMid != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerMid.ToString());
for (int i = 1; i <= path.PathPoints.Length - 2; i++)
{
marker.RenderMarker(renderer, this, path.PathPoints[i], path.PathPoints[i - 1], path.PathPoints[i], path.PathPoints[i + 1]);
}
}
if (this.MarkerEnd != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerEnd.ToString());
marker.RenderMarker(renderer, this, path.PathPoints[path.PathPoints.Length - 1], path.PathPoints[path.PathPoints.Length - 2], path.PathPoints[path.PathPoints.Length - 1]);
}
}
}
}
