public override GraphicsPath Render(Graphics g, Rectangle r, NodeStyle o)
{
var leftRect = new Rectangle(r.X, r.Y, r.Height, r.Height);
var rightRect = new Rectangle(r.Right - r.Height, r.Y, r.Height, r.Height);
var path = new GraphicsPath();
path.StartFigure();
path.AddArc(leftRect, 90, 180);
path.AddArc(rightRect, -90, 180);
path.CloseFigure();
//
g.FillPath(o.BackBrush, path);
g.DrawPath(o.BorderPen, path);
return(path);
}
public override GraphicsPath Render(Graphics g, Rectangle r, NodeStyle o)
{
var path = new GraphicsPath();
path.StartFigure();
path.AddPolygon(new Point[]
{
r.CenterTop(),
r.CenterRight(),
r.CenterBottom(),
r.CenterLeft()
});
path.CloseFigure();
//
g.FillPath(o.BackBrush, path);
g.DrawPath(o.BorderPen, path);
return(path);
}
public override GraphicsPath Render(Graphics g, Rect r, NodeStyle o)
{
var path = new GraphicsPath();
path.StartFigure();
path.AddPolygon(new Point[]
{
new Point(r.X + PageRenderOptions.GridSize, r.Y),
new Point(r.Right, r.Y),
new Point(r.Right - PageRenderOptions.GridSize, r.Bottom),
new Point(r.X, r.Bottom),
});
path.CloseFigure();
//
g.FillPath(o.BackBrush, path);
g.DrawPath(o.BorderPen, path);
return(path);
}
private void RenderPorts(Graphics g)
{
if (this.MoveNodeOffsetPoint == Point.Empty)
{
var o = new NodeStyle();
foreach (var node in this.SelectedNodes)
{
node.RenderedPorts.Clear();
var nodePath = this.RenderedNodes[node];
foreach (var port in node.Ports)
{
var portPath = port.Render(g, node.Bounds, o);
node.RenderedPorts.Add(port, portPath);
nodePath.FillMode = FillMode.Winding;
nodePath.AddPath(portPath, false);
}
}
}
}
private void RenderLines(Graphics g)
{
var o = new NodeStyle();
var f = new PathFinder(this.Nodes);
foreach (var node in this.Nodes)
{
foreach (var port in node.Ports)
{
o.LinePenWithArrow.Brush = port.GetBackBrush();
if (this.LinkNodeEndPoint != Point.Empty && this.LinkNodeStartPort == port)
{
g.DrawLine(o.LinePenWithArrow, port.Bounds.Center().X, port.Bounds.Center().Y, this.LinkNodeEndPoint.X, this.LinkNodeEndPoint.Y);
}
else if (this.GetNodeById(port.NextNodeId) is Node linkedNode)
{
g.DrawPath(o.LinePenWithArrow, f.GetPath(port.Bounds.Center(), linkedNode.Bounds.CenterTop()));
}
}
}
}
public void RenderText(Graphics g, Rectangle r, NodeStyle o)
{
g.DrawString(this.Name, o.Font, o.FontBrush, r, o.StringFormat);
}
public abstract GraphicsPath Render(Graphics g, Rectangle r, NodeStyle o);
public override void RenderText(Graphics g, Rect r, NodeStyle o)
{
g.DrawString(this.Name + Environment.NewLine + this.CurrentValue, o.Font, o.FontBrush, r, o.StringFormat);
}