DiamondAbstractButtonStateIcon.java Source code

Introduction

Here is the source code for DiamondAbstractButtonStateIcon.java

Source

import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;

import javax.swing.AbstractButton;
import javax.swing.Icon;
import javax.swing.JCheckBox;
import javax.swing.JFrame;

class DiamondAbstractButtonStateIcon implements Icon {
    public DiamondAbstractButtonStateIcon() {
    }

    public int getIconHeight() {
        return 20;
    }

    public int getIconWidth() {
        return 20;
    }

    public void paintIcon(Component component, Graphics g, int x, int y) {
        if (component instanceof AbstractButton) {
            AbstractButton abstractButton = (AbstractButton) component;
            boolean selected = abstractButton.isSelected();

            if (selected) {
                g.setColor(Color.RED);
            } else {
                g.setColor(Color.BLUE);
            }
            g.drawRect(0, 0, 20, 20);

        }
    }
}

public class DiamondAbstractButtonStateIconDemo {

    public static void main(String[] a) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JCheckBox bn = new JCheckBox("Click to change the icon color");
        bn.setIcon(new DiamondAbstractButtonStateIcon());

        frame.add(bn);

        frame.setSize(300, 200);
        frame.setVisible(true);
    }

}