GIF image added to JPanel doesn't resize

[Arun Bommannavar]

I can add a GIF (or PNG) to a JPanel (see code below) but the image doesn't rescale automatically. I need to have this image rescale when the JPanel is resized. I appreciate any suggestion.

   
JPanel jp = new JPanel();
jp.add(new JLabel(new ImageIcon("Gauss.PNG")));
contentPane.add(jp, java.awt.BorderLayout.CENTER);
  

Regards
Arun

[Gregg Bolinger]

Well, the problem is that you are adding a JLabel to a JPanel and chances are the JLabel isn't resizing. So its not really the images. If you are simply trying to add an image to a JPanel (as a background image) then you should do it something like what is written here.

If you still need it on a JLabel then you need to be sure your layout manager is resizing your JLabel correctly.

[Arun Bommannavar]

Originally posted by Gregg Bolinger:
Well, the problem is that you are adding a JLabel to a JPanel and chances are the JLabel isn't resizing. So its not really the images. If you are simply trying to add an image to a JPanel (as a background image) then you should do it something like what is written here.

If you still need it on a JLabel then you need to be sure your layout manager is resizing your JLabel correctly.

I finally ended up overriding the paintComponent as follows:

 
  public void paintComponent(Graphics g ){
 
  super.paintComponents(g);
  Dimension d = getSize();
  g.drawImage(image.getImage(), 0,0,d.width,d.height,this);  
}
   

works well.

Regards
Arun

[Rob Spoor]

Please keep paintComponent protected. It's unnecessary to have it be public.

I already updated the FAQ about this.
[ August 01, 2008: Message edited by: Rob Prime ]