CheckBoxIcon.java Source code

Introduction

Here is the source code for CheckBoxIcon.java

Source

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

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

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

class CheckBoxIcon implements Icon {
    public void paintIcon(Component component, Graphics g, int x, int y) {
        AbstractButton abstractButton = (AbstractButton) component;
        ButtonModel buttonModel = abstractButton.getModel();

        Color color = buttonModel.isSelected() ? Color.BLUE : Color.RED;
        g.setColor(color);

        g.drawRect(1, 1, 20, 20);

    }

    public int getIconWidth() {
        return 20;
    }

    public int getIconHeight() {
        return 20;
    }
}

public class IconCheckBoxSample {
    public static void main(String args[]) {
        JFrame frame = new JFrame("Iconizing CheckBox");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Icon checked = new CheckBoxIcon();
        Icon unchecked = new CheckBoxIcon();
        JCheckBox aCheckBox1 = new JCheckBox("Pizza", unchecked);
        aCheckBox1.setSelectedIcon(checked);
        JCheckBox aCheckBox2 = new JCheckBox("Calzone");
        aCheckBox2.setIcon(unchecked);
        aCheckBox2.setSelectedIcon(checked);
        Icon checkBoxIcon = new CheckBoxIcon();
        JCheckBox aCheckBox3 = new JCheckBox("Anchovies", checkBoxIcon);
        JCheckBox aCheckBox4 = new JCheckBox("Stuffed Crust", checked);
        frame.setLayout(new GridLayout(0, 1));
        frame.add(aCheckBox1);
        frame.add(aCheckBox2);
        frame.add(aCheckBox3);
        frame.add(aCheckBox4);
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}