我认为一个完整的示例将比仅仅修改您的代码更好地为您和其他人服务。这里的相关部分是,假设你已经有一个VisualizationViewer
, 来使用这个片段:
visualizationViewer.addGraphMouseListener(new GraphMouseListener() {...});
除了处理点击事件外,这还允许您添加新闻和发布事件。
这个独立的类创建了一个简单的图形——当一个顶点被点击时——在标准输出上打印哪个顶点被点击了。
import edu.uci.ics.jung.algorithms.layout.CircleLayout;
import edu.uci.ics.jung.algorithms.layout.Layout;
import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.graph.SparseGraph;
import edu.uci.ics.jung.visualization.VisualizationViewer;
import edu.uci.ics.jung.visualization.control.GraphMouseListener;
import edu.uci.ics.jung.visualization.decorators.ToStringLabeller;
import java.awt.Dimension;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
public class METest {
public static void main(String[] args) {
//Create a test graph
Graph graph = new SparseGraph<String, String>();
graph.addVertex("a");
graph.addVertex("b");
graph.addVertex("c");
graph.addVertex("d");
graph.addEdge("a->b", "a", "b");
graph.addEdge("a->c", "a", "c");
graph.addEdge("b->c", "b", "c");
graph.addEdge("c->d", "c", "d");
//Metrics
visualize(graph);
}
public static void visualize(Graph graph) {
//Layout graph.
Layout layout = new CircleLayout(graph);
layout.setSize(new Dimension(500, 500)); // sets the initial size of the space
VisualizationViewer server = new VisualizationViewer(layout);
server.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
//Here you add the listener
server.addGraphMouseListener(new GraphMouseListener() {
@Override
public void graphClicked(Object v, MouseEvent me) {
if (me.getButton() == MouseEvent.BUTTON1 && me.getClickCount() == 2) {
System.out.println("Double clicked "+ v);
}
me.consume();
}
@Override
public void graphPressed(Object v, MouseEvent me) {
}
@Override
public void graphReleased(Object v, MouseEvent me) {
}
});
//Show the frame
JFrame frame = new JFrame("Simple Graph View");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(server);
frame.pack();
frame.setVisible(true);
}
}