void CreateNodeGeometry(DrawingNode node, Graph graph, GeometryGraph geometryGraph, GeometryPoint center, ConnectionToGraph connectionTo = ConnectionToGraph.Connected)
{
double width, height;
StringMeasure.MeasureWithFont(node.Label.Text, new Font(node.Label.FontName, (float)node.Label.FontSize, (System.Drawing.FontStyle)(int) node.Label.FontStyle), out width,
out height);
node.Label.Width = width;
node.Label.Height = height;
if (node.Label != null)
{
width += 2 * node.Attr.LabelMargin;
height += 2 * node.Attr.LabelMargin;
}
if (width < graph.Attr.MinNodeWidth)
{
width = graph.Attr.MinNodeWidth;
}
if (height < graph.Attr.MinNodeHeight)
{
height = graph.Attr.MinNodeHeight;
}
Node geomNode =
node.GeometryNode =
GeometryGraphCreator.CreateGeometryNode(graph, geometryGraph, node, connectionTo);
geomNode.BoundaryCurve = NodeBoundaryCurves.GetNodeBoundaryCurve(node, width, height);
geomNode.BoundaryCurve.Translate(center);
geomNode.Center = center;
}
static Graph CtreateDrawingGraph(out FastIncrementalLayoutSettings settings)
{
settings = new FastIncrementalLayoutSettings {
RouteEdges = true, NodeSeparation = 30
};
var drawingGraph = new Graph();
AddEdge(drawingGraph, "0", "1");
AddEdge(drawingGraph, "0", "2");
AddEdge(drawingGraph, "1", "3");
AddEdge(drawingGraph, "2", "4");
AddEdge(drawingGraph, "2", "5");
AddEdge(drawingGraph, "2", "6");
AddEdge(drawingGraph, "5", "7");
AddEdge(drawingGraph, "5", "6");
AddEdge(drawingGraph, "7", "8");
AddEdge(drawingGraph, "8", "6");
drawingGraph.CreateGeometryGraph();
foreach (DrawingNode node in drawingGraph.Nodes)
{
double w, h;
var label = node.Label;
var font = new Font(label.FontName, (float)label.FontSize);
StringMeasure.MeasureWithFont(label.Text, font, out w, out h);
node.Label.Width = w;
node.Label.Height = h;
node.Attr.Shape = Shape.DrawFromGeometry;
node.GeometryNode.BoundaryCurve = CurveFactory.CreateRectangleWithRoundedCorners(1.2 * w, 1.2 * h, 3, 3, new Point());
}
return(drawingGraph);
}
private void CreateBoundaryCurve(Microsoft.Msagl.Drawing.Node node)
{
double w, h;
var label = node.Label;
var font = new Font(label.FontName, (float)label.FontSize);
StringMeasure.MeasureWithFont(label.Text, font, out w, out h);
node.Label.Width = w;
node.Label.Height = h;
node.Attr.Shape = Shape.DrawFromGeometry;
node.GeometryNode.BoundaryCurve = CurveFactory.CreateRectangleWithRoundedCorners(1.2 * w, 1.2 * h, 3, 3, new Microsoft.Msagl.Core.Geometry.Point());
}
private static void SetNodeBoundary(Microsoft.Msagl.Drawing.Node drawingNode)
{
var font = new System.Drawing.Font(drawingNode.Label.FontName, (float)drawingNode.Label.FontSize);
StringMeasure.MeasureWithFont(drawingNode.LabelText, font, out double width, out double height);
drawingNode.Label.GeometryLabel = new Microsoft.Msagl.Core.Layout.Label();
drawingNode.Label.GeometryLabel.Width = width;
drawingNode.Label.GeometryLabel.Height = width;
drawingNode.Label.Width = width;
drawingNode.Label.Height = height;
int r = drawingNode.Attr.LabelMargin;
drawingNode.GeometryNode.BoundaryCurve = CurveFactory.CreateRectangleWithRoundedCorners(width + r * 2, height + r * 2, r, r, new Point());
}
static ICurve CreateLabelAndBoundary(Node node)
{
node.Attr.Shape = Shape.DrawFromGeometry;
node.Attr.LabelMargin *= 2;
double width;
double height;
StringMeasure.MeasureWithFont(node.Label.Text,
new Font(node.Label.FontName, (float)node.Label.FontSize), out width, out height);
node.Label.Width = width;
node.Label.Height = height;
int r = node.Attr.LabelMargin;
return(CurveFactory.CreateRectangleWithRoundedCorners(width + r * 2, height + r * 2, r, r, new Point()));
}
private static void InitNodeBoundary(Node node)
{
double width = 0;
double height = 0;
if (node.Label != null)
{
var font = new Font(node.Label.FontName, (float)node.Label.FontSize);
StringMeasure.MeasureWithFont(node.LabelText, font, out width, out height);
}
if (width <= 0)
{
StringMeasure.MeasureWithFont("a", new Font("New Courer", 10), out width, out height);
}
node.GeometryNode.BoundaryCurve = CurveFactory.CreateEllipse(width / 2, height / 2, new Point());
}
DrawingLabel CreateLabel(DrawingEdge edge, string rel)
{
DrawingLabel label = new DrawingLabel
{
Text = rel,
FontName = "Times-Roman",
FontColor = Styles.RELATION_LABEL_COLOR.ToMsAgl(),
FontStyle = Microsoft.Msagl.Drawing.FontStyle.Regular,
FontSize = 4,
Owner = edge,
};
double width, height;
StringMeasure.MeasureWithFont(rel, new Font(label.FontName, (float)label.FontSize, (System.Drawing.FontStyle)(int) label.FontStyle), out width,
out height);
label.Width = width;
label.Height = height;
return(label);
}
void GViewerOnMouseMove(object sender, MouseEventArgs mouseEventArgs)
{
if (labelToChange == null)
{
return;
}
labelToChange.Text = MousePosition.ToString();
if (viewerEntityCorrespondingToLabelToChange == null)
{
foreach (var e in gViewer.Entities)
{
if (e.DrawingObject == labelToChange)
{
viewerEntityCorrespondingToLabelToChange = e;
break;
}
}
}
if (viewerEntityCorrespondingToLabelToChange == null)
{
return;
}
var rect = labelToChange.BoundingBox;
var font = new Font(labelToChange.FontName, (int)labelToChange.FontSize);
double width;
double height;
StringMeasure.MeasureWithFont(labelToChange.Text, font, out width, out height);
if (width <= 0)
{
//this is a temporary fix for win7 where Measure fonts return negative lenght for the string " "
StringMeasure.MeasureWithFont("a", font, out width, out height);
}
labelToChange.Width = width;
labelToChange.Height = height;
rect.Add(labelToChange.BoundingBox);
gViewer.Invalidate(gViewer.MapSourceRectangleToScreenRectangle(rect));
}
private static ICurve GetNodeBoundary(DrawingNode node)
{
double width;
double height;
var font = new Font(node.Label.FontName, (float)node.Label.FontSize, (System.Drawing.FontStyle)(int) node.Label.FontStyle);
StringMeasure.MeasureWithFont(node.Label.Text, font, out width, out height);
width += node.Attr.LabelMargin * 2;
height += node.Attr.LabelMargin * 2;
if (width <= 0)
{
// Temporary fix for Win7 where Measure fonts return negative length for the string " ".
StringMeasure.MeasureWithFont("a", font, out width, out height);
}
if ((node.UserData as NodeDisplaySettings).Icon != null)
{
width += kIconSize;
}
return(NodeBoundaryCurves.GetNodeBoundaryCurve(node, width, height));
}
void GViewerOnMouseMove(Edge edge, string value)
{
if (edge.Label == null)
{
return;
}
edge.Label.Text = value;
var rect = edge.Label.BoundingBox;
var font = new Font(edge.Label.FontName, (int)edge.Label.FontSize);
StringMeasure.MeasureWithFont(edge.Label.Text, font, out double width, out double height);
if (width <= 0)
{
StringMeasure.MeasureWithFont("a", font, out width, out height);
}
edge.Label.Width = width;
edge.Label.Height = height;
rect.Add(edge.Label.BoundingBox);
gViewer.Invalidate(gViewer.MapSourceRectangleToScreenRectangle(rect));
}
private void SetGraph()
{
var graph = new Graph();
graph.AddEdge("a", "b");
graph.AddEdge("e", "b");
graph.AddEdge("d", "b");
graph.AddEdge("b", "c");
graph.AddEdge("a22", "b22");
graph.AddEdge("e22", "b22");
graph.AddEdge("d22", "b22");
graph.AddEdge("b22", "c22");
graph.AddEdge("a0", "b0");
graph.AddEdge("b0", "c0");
graph.AddEdge("a33", "b33");
graph.AddEdge("e33", "b33");
graph.AddEdge("d33", "b33");
graph.AddEdge("b33", "c33");
graph.AddEdge("a11", "b11");
graph.AddEdge("b11", "c11").LabelText = "Test labels!";
graph.CreateGeometryGraph();
foreach (Node node in graph.Nodes)
{
node.GeometryNode.BoundaryCurve = CreateLabelAndBoundary(node);
}
foreach (var edge in graph.Edges)
{
if (edge.Label != null)
{
var geomEdge = edge.GeometryEdge;
double width;
double height;
StringMeasure.MeasureWithFont(edge.LabelText,
new Font(edge.Label.FontName, (float)edge.Label.FontSize), out width, out height);
edge.Label.GeometryLabel = geomEdge.Label = new Label(width, height, geomEdge);
}
}
var geomGraph = graph.GeometryGraph;
var geomGraphComponents = GraphConnectedComponents.CreateComponents(geomGraph.Nodes, geomGraph.Edges);
var settings = new SugiyamaLayoutSettings();
foreach (var subgraph in geomGraphComponents)
{
var layout = new LayeredLayout(subgraph, settings);
subgraph.Margins = settings.NodeSeparation / 2;
layout.Run();
}
Microsoft.Msagl.Layout.MDS.MdsGraphLayout.PackGraphs(geomGraphComponents, settings);
geomGraph.UpdateBoundingBox();
gViewer1.NeedToCalculateLayout = false;
gViewer1.Graph = graph;
}