/// <summary>
/// GraphViz library használata layout generálásra
/// </summary>
/// <param name="layoutType">SFDP a legjobb</param>
public void GenerateLayout(GraphVizWrapper.Enums.RenderingEngine layoutType)
{
List <Node> Nodes = GetNodeList();
if (Nodes.Count < 1)
{
return;
}
//Cursor = Cursors.WaitCursor;
double NodeR = XFVM.BaseSize / 2 / Math.Sqrt(Nodes.Count);
//put all connections into digraph, read by graphviz
string digraph = "digraph{";
foreach (Node n in Nodes)
{
foreach (ConnVM To in n.GetXF().GetConns())
{
digraph += Nodes.IndexOf(n) + " -> " + Nodes.IndexOf(GetNodeFromXF(To.ConnTo)) + ";";
}
}
digraph += "}";
//graphviz library to generate layout
var getStartProcessQuery = new GraphVizWrapper.Queries.GetStartProcessQuery();
var getProcessStartInfoQuery = new GraphVizWrapper.Queries.GetProcessStartInfoQuery();
var registerLayoutPluginCommand = new GraphVizWrapper.Commands.RegisterLayoutPluginCommand(getProcessStartInfoQuery, getStartProcessQuery);
var wrapper = new GraphVizWrapper.GraphGeneration(getStartProcessQuery, getProcessStartInfoQuery, registerLayoutPluginCommand);
wrapper.RenderingEngine = layoutType;//twopi vagy sfdp nez ki legjobban
string[] output = System.Text.Encoding.Default.GetString(wrapper.GenerateGraph(digraph, GraphVizWrapper.Enums.GraphReturnType.Plain)).Replace('.', ',').Split('\n');
int rowNr = 0;
string[] firstRow = output[rowNr].Split(' ');
double outWidth = Double.Parse(firstRow[2]);
double outHeight = Double.Parse(firstRow[3]);
while (++rowNr < output.Length)
{
string[] row = output[rowNr].Split(' ');
if (row[0] == "node")
{
Node n = Nodes[int.Parse(row[1])];
n.PosX = NodeR + (Double.Parse(row[2]) / outWidth) * (Width - 2 * NodeR);
n.PosY = NodeR + (Double.Parse(row[3]) / outHeight) * (Height - 2 * NodeR);
}
else
{
break;
}
}
updateConnections();
//Cursor = Cursors.Default;
}
private void SetLayout(object sender, RoutedEventArgs e)
{
GraphVizWrapper.Enums.RenderingEngine sel = GraphVizWrapper.Enums.RenderingEngine.Sfdp;
string s = ((Fluent.Button)sender).Header.ToString();
Enum.TryParse((s ?? "Sfdp").ToString(), out sel);
try
{
nodemap_main.GenerateLayout(sel);
StatusMessageVM.Instance.Show("Graph layout generated");
}
catch
{
StatusMessageVM.Instance.Show("Error while generating layout");
}
}
