public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
INode listBoxNode = value as INode;
if (listBoxNode != null)
{
graphControl.Graph.Clear();
var size = FlowChartNodeStyle.GetNodeTypeSize(listBoxNode);
var node = graphControl.Graph.CreateNode(new RectD(0, 0, size.Width, size.Height), listBoxNode.Style, listBoxNode.Tag);
double labelHeight = 0;
foreach (var label in listBoxNode.Labels)
{
graphControl.Graph.AddLabel(node, label.Text, label.LayoutParameter, label.Style, label.PreferredSize, label.Tag);
labelHeight = Math.Max(labelHeight, label.GetLayout().Height);
}
graphControl.FitGraphBounds(new InsetsD(5));
ContextConfigurator cc = new ContextConfigurator(graphControl.ContentRect);
var renderContext = cc.CreateRenderContext(graphControl);
Transform transform = cc.CreateWorldToIntermediateTransform();
System.Windows.Media.Geometry clip = cc.CreateClip();
var visualContent = graphControl.ExportContent(renderContext);
VisualGroup container = new VisualGroup()
{
Transform = transform, Clip = clip, Children = { visualContent }
};
VisualBrush brush = new VisualBrush(container);
return(new DrawingImage(new GeometryDrawing(brush, null, new RectangleGeometry(new Rect(0, 0, size.Width, size.Height + labelHeight)))));
}
else
{
return(null);
}
}
/// <summary>
/// Method that creates a node of the specified type. The method will specify the ports
/// that the node should have based on its type.
/// </summary>
private void CreateNode(IGraph graph, PointD location, FlowChartType type)
{
var size = FlowChartNodeStyle.GetNodeTypeSize(type);
RectD newBounds = new RectD(location, size);
graph.CreateNode(newBounds, new FlowChartNodeStyle {
FlowChartType = type
});
}
