How to remove underlying JButton image?

Question

Hi
I have this code to place an image over the standard JButton. But if the image is smaller or transparent, the underlying standard image is still seen. Is it possible to remove this image and just have the background of the panel showing?
public class ImageButton extends JButton {
     public ImageButton(ImageIcon icon, String text) {
          setSize(icon.getImage().getWidth(null),
               icon.getImage().getHeight(null));
          setIcon(icon);
          setMargin(new Insets(0,0,0,0));
          setIconTextGap(0);
          setBorderPainted(false);
          setBorder(null);
          setText(text);
                setHorizontalTextPosition(this.CENTER);
/code]
Thanks for any help.
Chris                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

OK, you have to choose your own background and button image. But the button image should be transparent, as I want the background image to show through, but it's not.
Here's the ImageButton, setting the button image.
import javax.swing.*;
import java.awt.*;
public class ImageButton extends JButton {
     public ImageButton(ImageIcon icon, String text) {
          setSize(icon.getImage().getWidth(null),
               icon.getImage().getHeight(null));
          setIcon(icon);
          setMargin(new Insets(0,0,0,0));
          setIconTextGap(0);
          setBorderPainted(false);
          setBorder(null);
          setText(text);
          setHorizontalTextPosition(this.CENTER);
}Here's the ImagePanel setting the background:
import java.awt.*;
import javax.swing.*;
public class ImagePanel extends JPanel {
    private Image img;
    public ImagePanel(String img) {
        this(new ImageIcon(img).getImage());
    public ImagePanel(Image img) {
        this.img = img;
        Dimension size = new Dimension(img.getWidth(null),img.getHeight(null));
        setPreferredSize(size);
        setMinimumSize(size);
        setMaximumSize(size);
        setSize(size);
        setLayout(null);
    public void paintComponent(Graphics g) {
        g.drawImage(img,0,0,null);
}And here is the calling code. I want the background image to be visible through my transparent button image. But it looks like a normal JButton is showing instead.
import javax.swing.*;
public class ImageTest {
    public static void main(String[] args) {
        ImagePanel panel = new ImagePanel(new ImageIcon("images/background.png").getImage());
        final ImageButton button = new ImageButton("images/buttonup-blank75.png");
     button.setLocation(30,30);
        panel.add(button);
        JFrame frame = new JFrame();
        frame.getContentPane().add(panel);
        frame.pack();
        frame.setVisible(true);
}