🚀 go-pugleaf

On Tue, 27 Jun 2000 11:41:54 +0200, JPBallet wrote:

> Sorry but this don't work with image. i hav a Debugraphics 
> exception.

Steve's code looks pretty good to me.  I am not sure why it would not 
work for you.  Perhaps there was a problem integrating it with your code.

The following is a test program I wrote a while back, slightly modified.  
It is a complete program, so it should work for you.  It is very similar 
to Steve's code, except I think that the translate() call was a little 
off.

This program displays an image scaled to the size of the frame, rotated 
90�.  Note that the usage of width and height looks a little strange.  
That is because after rotation, the width and the height are switched.

I compiled this using JDK 1.3, but I think the only 1.3 dependant code is 
the EXIT_ON_CLOSE constant.  In fact, it will run on 1.2.2, but requires 
1.3 to compile.  But you can change "JFrame.EXIT_ON_CLOSE" to "3", and it 
should compile with JDK 1.2.2.

Make sure you have a "Test.gif" in the directory when you run it.

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

   public class RotateTest
      extends JPanel
   {
      private Image image;

      public static void main( String[] args ) {
         JFrame frame = new JFrame();
         frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
         frame.setSize( 300, 300 );
         frame.setLocation( 200, 200 );

         frame.getContentPane().add( new RotateTest() );
         frame.validate();
         frame.show();
      }

      public RotateTest() {
         URL url = getClass().getResource( "Test.gif" );
         image = Toolkit.getDefaultToolkit().createImage( "Test.gif" );
      }

      public void paintComponent( Graphics g ) {
         super.paintComponent( g );
         Graphics2D g2d = (Graphics2D) g;
         Dimension size = getSize();
         g2d.rotate( Math.PI / 2 );
         g2d.translate( 0, - size.width );
         g.drawImage( image, 0, 0, size.height, size.width, this );
      }
   }

-- 
John P. McGrath
<JPMcGrath@fast.net>
<jpm@nscs.fast.net>