实际如何用GraphStream在秋千内绘制图形? [英] How to draw graph inside swing with GraphStream actually?

问题描述

我正在尝试实施挥杆内的教程图，但失败了.

I am trying to implement drawing of tutorial graph inside swing, but failing.

代码如下:

包tests.graphstream;

package tests.graphstream;

import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import org.graphstream.graph.Graph;
import org.graphstream.graph.implementations.SingleGraph;
import org.graphstream.ui.swingViewer.View;
import org.graphstream.ui.swingViewer.Viewer;

public class Tutorial1_01
{
    private static Graph graph = new SingleGraph("Tutorial 1");

    public static class MyFrame extends JFrame
    {
        private static final long serialVersionUID = 8394236698316485656L;

        //private Graph graph = new MultiGraph("embedded");
        //private Viewer viewer = new Viewer(graph, Viewer.ThreadingModel.GRAPH_IN_ANOTHER_THREAD);
        private Viewer viewer = new Viewer(graph, Viewer.ThreadingModel.GRAPH_IN_SWING_THREAD);
        private View view = viewer.addDefaultView(false);

        public MyFrame() {
             setLayout(new BorderLayout());
             add(view, BorderLayout.CENTER);
             setDefaultCloseOperation(EXIT_ON_CLOSE);
        }
    }

    public static void main(String args[]) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                MyFrame frame = new MyFrame();
                frame.setSize(320, 240);
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);

                graph.addNode("A");
                graph.addNode("B");
                graph.addNode("C");
                graph.addEdge("AB", "A", "B");
                graph.addEdge("BC", "B", "C");
                graph.addEdge("CA", "C", "A");

                graph.addAttribute("ui.quality");
                graph.addAttribute("ui.antialias");
            }
        });
    }
}

它绘制了这个:

如果拖动节点，它将变为:

If drag nodes, it turns to:

如何获得结果，接近graph.display()?

推荐答案

这是一个副作用，因为默认情况下节点不具有x和y坐标.

This is a side effect due to the fact that nodes do not have x and y coordinates by default.

为防止这种情况，您应该:

To prevent this you should whether :

• 使用viewer.enableAutoLayout();
激活viewer对象上的autolayout
• 或为每个节点自己指定一些x和y属性.

• activate the autolayout on your viewer object with viewer.enableAutoLayout();
• or specify by yourself some xand y attributes for each node.

// ...
public MyFrame() {
     setLayout(new BorderLayout());
     add(view, BorderLayout.CENTER);
     setDefaultCloseOperation(EXIT_ON_CLOSE);
     // Activate autolayout here : 
     viewer.enableAutoLayout();
}
// ...

具有节点属性

// In main() ...
Node a = graph.addNode("A");
a.addAttribute("xy", 0, 0);
Node b = graph.addNode("B");
b.addAttribute("xy", 10, 0);
Node c = graph.addNode("C");
c.addAttribute("xy", 10, 10);
// ...

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