/// <summary>
/// Saves the given <see cref="ITreeNode" /> to an image file.
/// </summary>
/// <param name="rootNode">The root node of the tree to be saved.</param>
/// <param name="basePath">The path in which to save the given tree</param>
/// <param name="fileName">The name of the image file to be saved (without extension)</param>
/// <param name="formatVertex">The delegate used to format the vertexes.</param>
/// <param name="formatEdge">The delegate used to format the edges.</param>
/// <param name="imageType">The type of image file in which to save the tree.</param>
/// <param name="timeout">The maximum time to wait for Graphviz to create the image file.</param>
/// <returns>The path to file where the tree image file was saved.</returns>
public static string ToGraphvizFile(
this ITreeNode rootNode, string basePath, string fileName,
FormatVertexEventHandler <Vertex> formatVertex,
FormatEdgeAction <Vertex, Edge> formatEdge,
GraphvizImageType imageType = GRAPHVIZ_IMAGE_TYPE, int timeout = GRAPHVIZ_TIMEOUT_MS)
{
var graph = new AdjacencyGraph <Vertex, Edge>();
GraphAdd(rootNode, graph, new Dictionary <ITreeNode, Vertex>());
var filePath = Path.Combine(basePath, $"{fileName}.dot");
if (File.Exists(filePath))
{
File.Delete(filePath);
}
var viz = new GraphvizAlgorithm <Vertex, Edge>(graph)
{
ImageType = imageType
};
if (formatVertex != null)
{
viz.FormatVertex += formatVertex;
}
if (formatEdge != null)
{
viz.FormatEdge += formatEdge;
}
return(viz.Generate(new FileDotEngine(timeout), filePath));
}
private string RenderAnalysisGraph(TypeDependencyGraph tdg, GraphvizImageType imageType, string fileName)
{
string output;
GraphvizAlgorithm renderer;
renderer = new GraphvizAlgorithm(tdg);
renderer.ImageType = imageType;
renderer.GraphFormat.RankDirection = GraphvizRankDirection.LR;
Color[] colors =
{
Color.Beige,
Color.Cornsilk,
Color.DimGray,
Color.Khaki,
Color.PeachPuff,
Color.Wheat,
Color.Olive,
Color.Moccasin,
Color.LightCoral,
Color.LightGoldenrodYellow,
Color.LightGray,
Color.LightGreen,
Color.LightPink,
Color.LightSalmon,
Color.LightSeaGreen,
Color.LightSkyBlue,
Color.LightSlateGray,
Color.LightSteelBlue,
Color.LightYellow,
Color.Lime,
Color.MediumAquamarine,
Color.MediumBlue,
Color.MediumOrchid,
Color.MediumPurple,
Color.MediumSeaGreen,
Color.MediumSlateBlue,
Color.MediumSpringGreen,
Color.MediumTurquoise,
Color.MediumVioletRed,
Color.MintCream,
};
int nextColorInd = 0;
Dictionary <int, Color> colormap = new Dictionary <int, Color>();
FormatVertexEventHandler fvertex = delegate(Object s, FormatVertexEventArgs args)
{
TypeVertex v = (TypeVertex)args.Vertex;
args.VertexFormatter.Label = v.Name;
args.VertexFormatter.Font = new Font(FontFamily.GenericSerif, 8);
if (v.SCCNum >= 0)
{
Color c;
if (!colormap.TryGetValue(v.SCCNum, out c))
{
if (nextColorInd > colors.GetUpperBound(0))
{
nextColorInd = 0;
}
c = colors[nextColorInd++];
colormap[v.SCCNum] = c;
}
args.VertexFormatter.FillColor = c;
args.VertexFormatter.Style = GraphvizVertexStyle.Filled;
}
};
FormatEdgeEventHandler Fedge = delegate(Object s, FormatEdgeEventArgs args)
{
args.EdgeFormatter.Head = new GraphvizEdgeExtremity(true);
args.EdgeFormatter.HeadArrow = new GraphvizArrow(GraphvizArrowShape.Dot);
};
renderer.FormatVertex += fvertex;
renderer.FormatEdge += Fedge;
output = renderer.Write(fileName);
return(output);
}
