Re: Resizing jpg for text box or icon

From:
Knute Johnson <nospam@rabbitbrush.frazmtn.com>
Newsgroups:
comp.lang.java.programmer
Date:
Sat, 25 Apr 2009 19:17:38 -0700
Message-ID:
<49f3c40b$0$25112$b9f67a60@news.newsdemon.com>
Dirk Bruere at NeoPax wrote:

Is there any method for automatically resizing a jpg image to fit a box
or button?


If you are going to display it in a Component you can scale it with the
Graphics.drawImage() method that takes a size argument. For buttons and
other purposes where you need a simple scaled image,
Image.getScaledInstance() would work just fine.

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

public class test extends JPanel {
     final Image img;

     public test() {
         img = Toolkit.getDefaultToolkit().getImage("EOC_1.JPG");
         setPreferredSize(new Dimension(400,300));
         Image sub = img.getScaledInstance(100,75,Image.SCALE_FAST);
         ImageIcon icon = new ImageIcon(sub);
         JButton b = new JButton(icon);
         add(b);
     }

     public void paintComponent(Graphics g) {
         g.drawImage(img,0,0,getWidth(),getHeight(),this);
     }

     public static void main(String[] args) {
         EventQueue.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame();
                 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                 test t = new test();
                 f.add(t,BorderLayout.CENTER);
                 f.pack();
                 f.setVisible(true);
             }
         });
     }
}

knute...

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