private MG.GeometryGraph CreateMSAGLGraph(DGMODEL.Drawing layout_diagram)
{
var msagl_graph = new MG.GeometryGraph();
var defsize = new VA.Drawing.Size(this.LayoutOptions.DefaultShapeSize.Width,
this.LayoutOptions.DefaultShapeSize.Height);
// Create the nodes in MSAGL
foreach (var layout_shape in layout_diagram.Shapes)
{
var nodesize = ToMSAGLCoordinates(layout_shape.Size ?? defsize);
var msagl_node = new MG.Node(layout_shape.ID,
MG.Splines.CurveFactory.CreateBox(nodesize.Width, nodesize.Height,
new MG.Point()));
msagl_graph.AddNode(msagl_node);
msagl_node.UserData = layout_shape;
}
bool connectors_ok = this.validate_connectors(layout_diagram);
// TODO: What to do if connectors_ok is false?
var msagl_size = this.ToMSAGLCoordinates(DefaultBezierConnectorLabelBoxSize);
// Create the MSAGL Connectors
foreach (var layout_connector in layout_diagram.Connectors)
{
if (layout_connector.From == null)
{
throw new System.ArgumentException("Connector's From node is null");
}
if (layout_connector.To == null)
{
throw new System.ArgumentException("Connector's To node is null");
}
var from_node = msagl_graph.NodeMap[layout_connector.From.ID];
var to_node = msagl_graph.NodeMap[layout_connector.To.ID];
var new_edge = new MG.Edge(from_node, to_node);
new_edge.ArrowheadAtTarget = false;
new_edge.UserData = layout_connector;
msagl_graph.AddEdge(new_edge);
new_edge.Label = new Microsoft.Msagl.Label(msagl_size.Width, msagl_size.Height, new_edge);
}
msagl_graph.CalculateLayout();
this.msagl_bb = new VA.Drawing.Rectangle(
msagl_graph.BoundingBox.Left,
msagl_graph.BoundingBox.Bottom,
msagl_graph.BoundingBox.Right,
msagl_graph.BoundingBox.Top);
this.layout_bb = new VA.Drawing.Rectangle(0, 0, this.msagl_bb.Width, msagl_bb.Height)
.Multiply(ScaleToDocument, ScaleToDocument);
return(msagl_graph);
}
internal static DNode CreateDNodeAndSetNodeBoundaryCurve(DrawingGraph drawingGraph, DGraph dGraph, GeometryNode geomNode, DrawingNode drawingNode)
{
double width = 0;
double height = 0;
DNode dNode = new DNode(drawingNode);
dGraph.AddNode(dNode);
Microsoft.Msagl.Drawing.Label label = drawingNode.Label;
if (label != null)
{
CreateDLabel(dNode, label, out width, out height);
width += 2 * dNode.DrawingNode.Attr.LabelMargin;
height += 2 * dNode.DrawingNode.Attr.LabelMargin;
}
if (width < drawingGraph.Attr.MinNodeWidth)
{
width = drawingGraph.Attr.MinNodeWidth;
}
if (height < drawingGraph.Attr.MinNodeHeight)
{
height = drawingGraph.Attr.MinNodeHeight;
}
// Filippo Polo: I'm taking this out because I've modified the drawing of a double circle
// so that it can be used with ellipses too.
//if (drawingNode.Attr.Shape == Shape.DoubleCircle)
//width = height = Math.Max(width, height) * Draw.DoubleCircleOffsetRatio;
if (geomNode.BoundaryCurve == null)
{
geomNode.BoundaryCurve = Microsoft.Msagl.Drawing.NodeBoundaryCurves.GetNodeBoundaryCurve(dNode.DrawingNode, width, height);
}
return(dNode);
}
// Given the MSAGL node, this function returns the Shape object
private static DGMODEL.Shape get_shape(MG.Node msagl_node)
{
var shape = (DGMODEL.Shape)msagl_node.UserData;
return(shape);
}
