Scale an image

Question

Hi all,
I used the following code to zoom in & zoom out an image. By this code image is aligned to the left side. I need the image to appear in the centre of the panel when it is scaled down. please can anyone help me to do that?
private void setImageToLabel(BufferedImage src,JLabel label,double scale){
     label.setIcon(null);
         try{     
            int width = (int)(src.getWidth()*scale);
            int height = (int)(src.getHeight()*scale); 
        AffineTransform trans = AffineTransform.getScaleInstance(scale,scale);
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = ge.getDefaultScreenDevice();
        GraphicsConfiguration cg = gd.getDefaultConfiguration();
        int transparency = src.getColorModel().getTransparency();
        BufferedImage dest = cg.createCompatibleImage(width, height, transparency);
        Graphics2D g = dest.createGraphics();
        g.drawRenderedImage(src, trans);
        g.dispose();  
        label.setIcon(new ImageIcon(dest));
     }catch(Exception e){
          System.out.println("setImageToLable");
    }    }the 'label' is in a scroll pane, which is in a JPanel
thanks in advance

Answer 1

Could you just put the label into the JPanel using GridBagLayout and the default GridBagConstraints? That should place the JLabel smack center of the JPanel. You would likely need to revalidate the JPanel whenever the Image changed size.