void WriteFromMsaglCurve(Node node)
{
NodeAttr attr = node.Attr;
var iCurve = node.GeometryNode.BoundaryCurve;
var c = iCurve as Curve;
if (c != null)
{
WriteCurve(c, node);
}
else
{
var ellipse = iCurve as Ellipse;
if (ellipse != null)//a bug when the axis are rotated
{
WriteEllipseOnPosition(node.Attr, ellipse.Center, ellipse.AxisA.Length, ellipse.AxisB.Length);
}
else
{
var poly = iCurve as Polyline;
if (poly != null)
{
WritePolyline(poly, attr);
}
else
{
throw new NotImplementedException();
}
}
}
}
void WriteEllipseOnPosition(NodeAttr nodeAttr, Point center, double rx, double ry)
{
WriteStartElement("ellipse");
WriteFill(nodeAttr);
WriteStroke(nodeAttr);
WriteFullEllipseGeometry(center, rx, ry);
WriteEndElement();
}
/// <summary>
/// a helper function to creat a node boundary curve
/// </summary>
/// <param name="node">the node</param>
/// <param name="width">the node width</param>
/// <param name="height">the node height</param>
/// <returns></returns>
public static ICurve GetNodeBoundaryCurve(Node node, double width, double height)
{
if (node == null)
{
throw new InvalidOperationException();
}
NodeAttr nodeAttr = node.Attr;
switch (nodeAttr.Shape)
{
case Shape.Ellipse:
case Shape.DoubleCircle:
return(CurveFactory.CreateEllipse(width, height, new P2(0, 0)));
case Shape.Circle:
{
double r = Math.Max(width / 2, height / 2);
return(CurveFactory.CreateEllipse(r, r, new P2(0, 0)));
}
case Shape.Box:
if (nodeAttr.XRadius != 0 || nodeAttr.YRadius != 0)
{
return(CurveFactory.CreateRectangleWithRoundedCorners(
width, height, nodeAttr.XRadius,
nodeAttr.YRadius, new P2(0, 0)));
}
return(CurveFactory.CreateRectangle(width, height, new P2(0, 0)));
case Shape.Diamond:
return(CurveFactory.CreateDiamond(width, height, new P2(0, 0)));
case Shape.House:
return(CurveFactory.CreateHouse(width, height, new P2()));
case Shape.InvHouse:
return(CurveFactory.CreateInvertedHouse(width, height, new P2()));
case Shape.Octagon:
return(CurveFactory.CreateOctagon(width, height, new P2()));
#if DEBUG
case Shape.TestShape:
return(CurveFactory.CreateTestShape(width, height));
#endif
default:
{
// Debug.WriteLine("creating ellipse for shape {0}",nodeAttr.Shape);
return(new Ellipse(
new P2(width / 2, 0), new P2(0, height / 2), new P2()));
}
}
}
private void WriteNodeAttr(NodeAttr na)
{
WriteStartElement(Tokens.NodeAttribute);
WriteBaseAttr(na);
WriteColorElement(Tokens.Fillcolor, na.FillColor);
WriteStringElement(Tokens.LabelMargin, na.LabelMargin);
WriteStringElement(Tokens.Padding, na.Padding);
WriteStringElement(Tokens.Shape, na.Shape);
WriteStringElement(Tokens.XRad, na.XRadius);
WriteStringElement(Tokens.YRad, na.YRadius);
WriteEndElement();
}
/// <summary>
/// Creates a Node instance
/// </summary>
/// <param name="id">node name</param>
public Node(string id)
{
this.DefaultStyleKey = typeof(Node);
Label = new Label();
Label.GeometryLabel = null;
Label.Owner = this;
Label.Text = id; // one can change the label text later - TJT: Huh???
Attr = new NodeAttr();
attr.Id = id;
}
private void ReadNodeAttr(NodeAttr na)
{
CheckToken(Tokens.NodeAttribute);
XmlRead();
ReadBaseAttr(na);
na.FillColor = ReadColorElement(Tokens.Fillcolor);
na.LabelMargin = ReadIntElement(Tokens.LabelMargin);
na.Padding = ReadDoubleElement(Tokens.Padding);
na.Shape = (Shape)Enum.Parse(typeof(Shape), ReadStringElement(Tokens.Shape), false);
na.XRadius = ReadDoubleElement(Tokens.XRad);
na.YRadius = ReadDoubleElement(Tokens.YRad);
ReadEndElement();
}
void WriteFill(NodeAttr attr)
{
var color = attr.FillColor;
if (color.A == 0 && !attr.Styles.Contains(Style.Filled))
{
WriteAttribute("fill", "none");
}
else
{
WriteAttribute("fill", MsaglColorToSvgColor(color));
WriteAttribute("fill-opacity", MsaglColorToSvgOpacity(color));
}
}
void WriteDiamond(Node node)
{
NodeAttr nodeAttr = node.Attr;
double w2 = node.GeometryNode.Width / 2.0f;
double h2 = node.GeometryNode.Height / 2.0f;
double cx = node.GeometryNode.Center.X;
double cy = node.GeometryNode.Center.Y;
var ps = new[] {
new Point(cx - w2, cy),
new Point(cx, cy + h2),
new Point(cx + w2, cy),
new Point(cx, cy - h2)
};
DrawPolygon(node.Attr, ps);
}
void ReadNodeContent()
{
XmlRead();
object userData = null;
if (TokenIs(Tokens.UserData))
{
userData = ReadUserData();
}
var nodeAttr = new NodeAttr();
ReadNodeAttr(nodeAttr);
var node = graph.AddNode(nodeAttr.Id);
node.Label = null;
node.Attr = nodeAttr;
node.UserData = userData;
ReadLabel(node);
ReadEndElement();
}
Subgraph ReadSubgraphContent()
{
object userData = null;
if (TokenIs(Tokens.UserData))
{
userData = ReadUserData();
}
var nodeAttr = new NodeAttr();
ReadNodeAttr(nodeAttr);
var subgraph = new Subgraph(nodeAttr.Id)
{
Label = null, Attr = nodeAttr, UserData = userData
};
ReadLabel(subgraph);
ReadEndElement();
return(subgraph);
}
void WriteFillAndStroke(NodeAttr attr)
{
WriteFill(attr);
WriteStroke(attr);
}
void WritePolyline(Polyline poly, NodeAttr attr)
{
throw new NotImplementedException();
}