112 lines
2.9 KiB
Java
112 lines
2.9 KiB
Java
package eu.dnetlib.pace;
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import java.util.*;
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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public class GraphDraw extends JFrame {
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int width;
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int height;
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ArrayList<Node> nodes;
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ArrayList<edge> edges;
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public GraphDraw() { //Constructor
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this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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nodes = new ArrayList<Node>();
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edges = new ArrayList<edge>();
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width = 15;
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height = 15;
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}
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public GraphDraw(String name) { //Construct with label
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this.setTitle(name);
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this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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nodes = new ArrayList<Node>();
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edges = new ArrayList<edge>();
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width = 15;
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height = 15;
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}
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class Node {
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int x, y;
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String name;
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Color color;
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public Node(String myName, int myX, int myY) {
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x = myX;
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y = myY;
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name = myName;
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color = Color.white;
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}
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public Node(String myName, int myX, int myY, Color myColor) {
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x = myX;
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y = myY;
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name = myName;
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color = myColor;
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}
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}
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class edge {
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int i,j;
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public edge(int ii, int jj) {
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i = ii;
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j = jj;
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}
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}
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public void addNode(String name, int x, int y) {
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//add a node at pixel (x,y)
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nodes.add(new Node(name,x,y));
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this.repaint();
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}
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public void addEdge(int i, int j) {
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//add an edge between nodes i and j
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edges.add(new edge(i,j));
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this.repaint();
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}
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public void paint(Graphics g) { // draw the nodes and edges
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FontMetrics f = g.getFontMetrics();
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int nodeHeight = Math.max(height, f.getHeight());
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g.setColor(Color.black);
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for (edge e : edges) {
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g.drawLine(nodes.get(e.i).x, nodes.get(e.i).y,
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nodes.get(e.j).x, nodes.get(e.j).y);
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}
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for (Node n : nodes) {
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n.name = n.name.substring(0, 20);
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int nodeWidth = Math.max(width, f.stringWidth(n.name)+width/2);
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g.setColor(n.color);
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g.fillRoundRect(n.x-nodeWidth/2, n.y-nodeHeight/2,
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nodeWidth, nodeHeight, 2, 2);
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g.setColor(Color.black);
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g.drawRoundRect(n.x-nodeWidth/2, n.y-nodeHeight/2, nodeWidth, nodeHeight, 2, 2);
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g.drawString(n.name, n.x-f.stringWidth(n.name)/2,
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n.y+f.getHeight()/5);
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}
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}
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}
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class testGraphDraw {
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//Here is some example syntax for the GraphDraw class
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public static void main(String[] args) {
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GraphDraw frame = new GraphDraw("Test Window");
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frame.setSize(400,300);
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frame.setVisible(true);
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frame.addNode("a", 50,50);
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frame.addNode("b", 100,100);
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frame.addNode("longNode", 200,200);
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frame.addEdge(0,1);
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frame.addEdge(0,2);
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}
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}
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