internal EdgeLayout CreateEdge(NodeLayout source, NodeLayout target, object edgeObject)
{
_dirty = true;
var e = new EdgeLayout(this, source, target, edgeObject);
CGraphLib.agxset(e.GraphVizEdge, _edgeDirAttribute, "none");
_objectToEdgeMap.Add(edgeObject, e);
return(e);
}
public void ComputeLayout()
{
if (!_dirty)
{
return;
}
foreach (var node in _objectToNodeMap.Values)
{
if (!node.IsSubGraph)
{
if (node.PreferredPosition != null)
{
CGraphLib.agxset(node.GraphVizNode, _nodePosAttribute, node.PreferredPosition.ToString());
}
else
{
CGraphLib.agxset(node.GraphVizNode, _nodePosAttribute, "");
}
if (node.PreferredSize != null)
{
CGraphLib.agxset(node.GraphVizNode, _nodeWidthAttribute, node.PreferredSize?.X.ToString());
CGraphLib.agxset(node.GraphVizNode, _nodeHeightAttribute, node.PreferredSize?.Y.ToString());
}
else
{
CGraphLib.agxset(node.GraphVizNode, _nodeWidthAttribute, "");
CGraphLib.agxset(node.GraphVizNode, _nodeHeightAttribute, "");
}
}
else
{
//CGraphLib.agxset(node.GraphVizSubGraph, _nodePosAttribute, "");
//CGraphLib.agxset(node.GraphVizSubGraph, _nodeWidthAttribute, "");
//CGraphLib.agxset(node.GraphVizSubGraph, _nodeHeightAttribute, "");
CGraphLib.agxset(node.GraphVizSubGraph, _graphMarginAttribute, (this.NodeMargin * DefaultDpi).ToString());
}
}
CGraphLib.agxset(_graph, _graphNodeSepAttribute, this.NodeSeparation.ToString());
CGraphLib.agxset(_graph, _graphRankSepAttribute, this.RankSeparation.ToString());
CGraphLib.agxset(_graph, _graphLenAttribute, this.EdgeLength.ToString());
//CGraphLib.agxset(_graph, _graphMarginAttribute, this.NodeMargin.ToString());
_dot = GraphVizLib.Instance.Layout(_graph, _engine);
var graphBb = Marshal.PtrToStringAnsi(CGraphLib.agxget(_graph, _graphBbAttribute));
if (!string.IsNullOrEmpty(graphBb))
{
var parts = graphBb.Trim().Split(',');
if (parts.Length == 4)
{
double x1, y1, x2, y2;
for (int i = 0; i < parts.Length; i++)
{
var charSubParts = parts[i].Split('.');
if (charSubParts.Length > 1)
{
var subPart = charSubParts[0] + ',' + charSubParts[1];
parts[i] = subPart;
}
}
if (Double.TryParse(parts[0], out x1) && Double.TryParse(parts[1], out y1) &&
Double.TryParse(parts[2], out x2) && Double.TryParse(parts[3], out y2))
{
x1 /= DefaultDpi;
y1 /= DefaultDpi;
x2 /= DefaultDpi;
y2 /= DefaultDpi;
this.Position = new Point2D((x1 + x2) / 2, (y1 + y2) / 2);
this.Size = new Point2D(x2 - x1, y2 - y1);
}
CGraphLib.agxset(_graph, _graphBbAttribute, "");
}
}
foreach (var node in _objectToNodeMap.Values)
{
if (node.IsSubGraph)
{
var gvBb = Marshal.PtrToStringAnsi(CGraphLib.agxget(node.GraphVizSubGraph, _graphBbAttribute));
if (!string.IsNullOrEmpty(gvBb))
{
var parts = gvBb.Trim().Split(',');
if (parts.Length == 4)
{
double x1, y1, x2, y2;
for (int i = 0; i < parts.Length; i++)
{
var charSubParts = parts[i].Split('.');
if (charSubParts.Length > 1)
{
var subPart = charSubParts[0] + ',' + charSubParts[1];
parts[i] = subPart;
}
}
if (double.TryParse(parts[0], out x1) && double.TryParse(parts[1], out y1) &&
double.TryParse(parts[2], out x2) && double.TryParse(parts[3], out y2))
{
x1 /= DefaultDpi;
y1 /= DefaultDpi;
x2 /= DefaultDpi;
y2 /= DefaultDpi;
node.Position = new Point2D((x1 + x2) / 2, (y1 + y2) / 2);
node.Size = new Point2D(x2 - x1, y2 - y1);
}
}
CGraphLib.agxset(node.GraphVizSubGraph, _graphBbAttribute, "");
}
else
{
if (node.PreferredSize != null)
{
node.Size = node.PreferredSize.Value;
}
}
}
else
{
var gvPos = Marshal.PtrToStringAnsi(CGraphLib.agxget(node.GraphVizNode, _nodePosAttribute));
if (!string.IsNullOrEmpty(gvPos))
{
node.Position = new Point2D(gvPos, GraphLayout.DefaultDpi);
CGraphLib.agxset(node.GraphVizNode, _nodePosAttribute, "");
}
var gvWidth = Marshal.PtrToStringAnsi(CGraphLib.agxget(node.GraphVizNode, _nodeWidthAttribute));
var gvHeight = Marshal.PtrToStringAnsi(CGraphLib.agxget(node.GraphVizNode, _nodeHeightAttribute));
if (!string.IsNullOrEmpty(gvWidth) && !string.IsNullOrEmpty(gvHeight))
{
if (double.TryParse(gvWidth, out var width) && double.TryParse(gvHeight, out var height))
{
node.Size = new Point2D(width, height);
}
}
else
{
if (node.PreferredSize != null)
{
node.Size = node.PreferredSize.Value;
}
}
}
}
foreach (var edge in _objectToEdgeMap.Values)
{
var gvPos = Marshal.PtrToStringAnsi(CGraphLib.agxget(edge.GraphVizEdge, _edgePosAttribute));
if (!string.IsNullOrEmpty(gvPos))
{
edge.SetControlPoints(gvPos);
CGraphLib.agxset(edge.GraphVizEdge, _edgePosAttribute, "");
}
}
_dirty = false;
}
