Working with Toggle Buttons : ToggleButton « Swing JFC « Java

1. Java
2. Swing JFC
3. ToggleButton

Working with Toggle Buttons

  
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Polygon;

import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JToggleButton;

public class ToggleTest {
  static class TriangleIcon implements Icon {
    String name;

    static class State {
      public static final int NORMAL = 0;

      public static final int PRESSED = 1;

      public static final int ROLLOVER = 2;

      public static final int SELECTED = 3;

      private State() {
      }
    }

    int state;

    Color color;

    public TriangleIcon(Color c, int state) {
      color = c;
      this.state = state;
    }

    public int getIconWidth() {
      return 20;
    }

    public int getIconHeight() {
      return 20;
    }

    public void paintIcon(Component c, Graphics g, int x, int y) {
      g.setColor(color);
      Polygon p = new Polygon();
      if (state == State.NORMAL) {
        p.addPoint(x + (getIconWidth() / 2), y);
        p.addPoint(x, y + getIconHeight() - 1);
        p.addPoint(x + getIconWidth() - 1, y + getIconHeight() - 1);
      } else if (state == State.PRESSED) {
        p.addPoint(x, y);
        p.addPoint(x + getIconWidth() - 1, y);
        p.addPoint(x + (getIconWidth() / 2), y + getIconHeight() - 1);
      } else if (state == State.SELECTED) {
        p.addPoint(x + getIconWidth() - 1, y);
        p.addPoint(x + getIconWidth() - 1, y + getIconHeight() - 1);
        p.addPoint(x, y + (getIconHeight() / 2));
      } else {
        p.addPoint(x, y);
        p.addPoint(x, y + getIconHeight() - 1);
        p.addPoint(x + getIconWidth() - 1, y + (getIconHeight() / 2));
      }
      g.fillPolygon(p);
    }
  }

  public static void main(String args[]) {
    JFrame frame = new JFrame();
    Container contentPane = frame.getContentPane();
    contentPane.setLayout(new GridLayout(0, 1));
    Icon normalIcon = new TriangleIcon(Color.red, TriangleIcon.State.NORMAL);
    Icon pressedIcon = new TriangleIcon(Color.red,
        TriangleIcon.State.PRESSED);
    Icon selectedIcon = new TriangleIcon(Color.red,
        TriangleIcon.State.SELECTED);
    Icon rolloverIcon = new TriangleIcon(Color.red,
        TriangleIcon.State.ROLLOVER);
    JToggleButton b = new JToggleButton("Initially UnSelected");
    contentPane.add(b);
    b = new JToggleButton("Initially Selected", true);
    contentPane.add(b);
    b = new JToggleButton(normalIcon);
    b.setPressedIcon(pressedIcon);
    b.setSelectedIcon(selectedIcon);
    b.setRolloverIcon(rolloverIcon);
    b.setRolloverEnabled(true);
    contentPane.add(b);
    frame.setSize(300, 150);
    frame.show();
  }
}


           
         
    
  

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