private Node Convert(GraphViews.Node node)
{
Node nd = new Node(node.ID);
nd.LabelText = node.Label;
nd.Label.FontSize = node.FontSize;
nd.Label.FontColor = Convert(node.FontColor);
nd.Attr.Shape = Shape.Box;
nd.Attr.FillColor = Convert(node.FillColor);
if (node.Shape == GraphViews.ShapeStyle.None)
{
nd.Attr.Color = Color.White;
}
return(nd);
}
public override void Write(string path)
{
// References:
// http://en.wikipedia.org/wiki/DGML
// http://msdn.microsoft.com/library/ee842619.aspx
// http://ceyhunciper.wordpress.com/category/dgml/
// http://www.lovettsoftware.com/blogengine.net/post/2010/07/16/DGML-with-Style.aspx
var settings = new XmlWriterSettings();
settings.Indent = true;
Func <Color, string> colorToString = c => c.ToString().Trim('"');
using (var writer = XmlWriter.Create(path, settings))
{
writer.WriteStartElement("DirectedGraph", "http://schemas.microsoft.com/vs/2009/dgml");
writer.WriteStartElement("Nodes");
foreach (string key in nodes.Keys)
{
GraphViews.Node node = (GraphViews.Node)nodes[key];
writer.WriteStartElement("Node");
writer.WriteAttributeString("Id", key);
writer.WriteAttributeString("Label", node.Label);
writer.WriteAttributeString("FontSize", node.FontSize.ToString());
writer.WriteAttributeString("Foreground", node.FontColor.ToString());
writer.WriteAttributeString("Background", node.FillColor.ToString());
if (node.Shape == GraphViews.ShapeStyle.None)
{
writer.WriteAttributeString("Shape", "None");
}
if (node.UserData is GraphViews.GraphBuilder.Group)
{
writer.WriteAttributeString("Group", "Expanded");
}
else
{
// The Shape attribute in DGML can only be used to remove the outline.
// To actually change the shape, use the NodeRadius attribute.
if (node.Shape == GraphViews.ShapeStyle.Box)
{
writer.WriteAttributeString("NodeRadius", "0");
}
else if (node.Shape == GraphViews.ShapeStyle.Ellipse)
{
writer.WriteAttributeString("NodeRadius", "100");
}
}
// The Outline attribute seems to be ignored.
//writer.WriteAttributeString("Outline", colorToString(node.Attr.Color));
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteStartElement("Links");
foreach (GraphViews.Edge edge in edges)
{
writer.WriteStartElement("Link");
writer.WriteAttributeString("Source", edge.Source.ID);
writer.WriteAttributeString("Target", edge.Target.ID);
writer.WriteAttributeString("Label", edge.Label);
writer.WriteAttributeString("FontSize", edge.FontSize.ToString());
// Sadly there is no way to change the arrow head style in DGML.
if (edge.UserData is GraphViews.GraphBuilder.Group)
{
writer.WriteAttributeString("Category", "Contains");
}
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteEndElement();
}
}
public override void Write(string path)
{
var settings = new XmlWriterSettings();
settings.Indent = true;
Func <Color, string> colorToString = c => c.ToString().Trim('"');
using (var writer = XmlWriter.Create(path, settings))
{
writer.WriteStartElement("DirectedGraph", "http://schemas.microsoft.com/vs/2009/dgml");
writer.WriteStartElement("Nodes");
foreach (string key in nodes.Keys)
{
GraphViews.Node node = (GraphViews.Node)nodes[key];
writer.WriteStartElement("Node");
writer.WriteAttributeString("Id", key);
writer.WriteAttributeString("Label", node.Label);
writer.WriteAttributeString("FontSize", node.FontSize.ToString());
writer.WriteAttributeString("Foreground", node.FontColor.ToString());
writer.WriteAttributeString("Background", node.FillColor.ToString());
if (node.Shape == GraphViews.ShapeStyle.None)
{
writer.WriteAttributeString("Shape", "None");
}
if (node.UserData is GraphViews.GraphBuilder.Group)
{
writer.WriteAttributeString("Group", "Expanded");
}
else
{
// The Shape attribute in DGML can only be used to remove the outline.
// To actually change the shape, use the NodeRadius attribute.
if (node.Shape == GraphViews.ShapeStyle.Box)
{
writer.WriteAttributeString("NodeRadius", "0");
}
else if (node.Shape == GraphViews.ShapeStyle.Ellipse)
{
writer.WriteAttributeString("NodeRadius", "100");
}
}
// The Outline attribute seems to be ignored.
//writer.WriteAttributeString("Outline", colorToString(node.Attr.Color));
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteStartElement("Links");
foreach (GraphViews.Edge edge in edges)
{
writer.WriteStartElement("Link");
writer.WriteAttributeString("Source", edge.Source.ID);
writer.WriteAttributeString("Target", edge.Target.ID);
writer.WriteAttributeString("Label", edge.Label);
writer.WriteAttributeString("FontSize", edge.FontSize.ToString() ?? Microsoft.Msagl.Drawing.Label.DefaultFontSize.ToString());
// Sadly there is no way to change the arrow head style in DGML.
if (edge.UserData is GraphViews.GraphBuilder.Group)
{
writer.WriteAttributeString("Category", "Contains");
}
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteEndElement();
}
}
