JGraph

package de.nouri.view;

import java.awt.Color;
import java.awt.geom.Rectangle2D;

import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JScrollPane;

import org.jgraph.JGraph;
import org.jgraph.graph.DefaultEdge;
import org.jgraph.graph.DefaultGraphCell;
import org.jgraph.graph.DefaultGraphModel;
import org.jgraph.graph.DefaultPort;
import org.jgraph.graph.GraphConstants;
import org.jgraph.graph.GraphModel;

public class HelloWorld {

public static void main(String[] args) {

// Construct Model and Graph
GraphModel model = new DefaultGraphModel();
JGraph graph = new JGraph(model);

// Control-drag should clone selection
graph.setCloneable(false);

// Enable edit without final RETURN keystroke
graph.setInvokesStopCellEditing(true);

// When over a cell, jump to its default port (we only have one, anyway)
graph.setJumpToDefaultPort(true);

// Insert all three cells in one call, so we need an array to store them
DefaultGraphCell[] cells = new DefaultGraphCell[3];

// Create Hello Vertex
cells[0] = createVertex("Hello", 20, 20, 40, 20, Color.BLUE, false);

// Create World Vertex
cells[1] = createVertex("World", 140, 140, 40, 20, Color.ORANGE, true);

// Create Edge
DefaultEdge edge = new DefaultEdge();
// Fetch the ports from the new vertices, and connect them with the edge
edge.setSource(cells[0].getChildAt(0));
edge.setTarget(cells[1].getChildAt(0));
cells[2] = edge;

// Set Arrow Style for edge
int arrow = GraphConstants.ARROW_CLASSIC;
GraphConstants.setLineEnd(edge.getAttributes(), arrow);
GraphConstants.setEndFill(edge.getAttributes(), true);

// Insert the cells via the cache, so they get selected
graph.getGraphLayoutCache().insert(cells);

// Show in Frame
JFrame frame = new JFrame();
frame.getContentPane().add(new JScrollPane(graph));
//frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}

public static DefaultGraphCell createVertex(String name, double x,
double y, double w, double h, Color bg, boolean raised) {

// Create vertex with the given name
DefaultGraphCell cell = new DefaultGraphCell(name);

// Set bounds
GraphConstants.setBounds(cell.getAttributes(), new Rectangle2D.Double(
x, y, w, h));

// Set fill color
if (bg != null) {
GraphConstants.setGradientColor(cell.getAttributes(), Color.orange);
GraphConstants.setOpaque(cell.getAttributes(), true);
}

// Set raised border
if (raised)
GraphConstants.setBorder(cell.getAttributes(), BorderFactory
.createRaisedBevelBorder());
else
// Set black border
GraphConstants.setBorderColor(cell.getAttributes(), Color.black);

// Add a Port
DefaultPort port = new DefaultPort();
cell.add(port);
port.setParent(cell);

return cell;
}

}