###@###.### 2004-01-27

J2SE Version (please include all output from java -version flag):
  java version "1.5.0-beta"
  Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32)
  Java HotSpot(TM) Client VM (build 1.5.0-beta-b32, mixed mode)

Does this problem occur on J2SE 1.4 or 1.4.1 or 1.4.2? Yes / No (pick one)
  No. works fine with 1.4.2.

Operating System Configuration Information (be specific):
  Linux (Debian Unstable), can be reproduced on RedHat 7.3 as well

Hardware Configuration Information (be specific):
  Dell Inspiron 8500, 1GB RAM, Nvidia graphics adapter


Bug Description:
  Graphics.copyarea() is used in may scrolling components. The
  documentation states that paint() is invoked for regions that could not
  be copied because they were obscured by an overlapping window:

      * If a portion of the source rectangle lies outside the bounds
      * of the component, or is obscured by another window or component,
      * <code>copyArea</code> will be unable to copy the associated
      * pixels. The area that is omitted can be refreshed by calling
      * the component's <code>paint</code> method.

  This works fine with J2SDK1.4.2 but does no longer work with J2SDK
  1.5.0b32 on Linux. Works fine on Windows.


Steps to Reproduce (be specific):
  Run the attached program on Linux and try scrolling using either
  scrollbar or mousewheel. Observe that the overlapped window causes
  repaint errors.


Test program:

import javax.swing.*;

public class CopyAreaTest
{
        public static void main(String[] args)
        {
                StringBuffer buf = new StringBuffer();
                for (int i = 0; i < 1000; i++)
                {
                        buf.append("This is line"+i+"\n");
                }
                JTextArea textArea = new JTextArea(buf.toString());
                JFrame frame = new JFrame("Test");
                frame.getContentPane().add(new JScrollPane(textArea));
                frame.pack();
                frame.setBounds(100,100,500,500);
                frame.show();
                JWindow window = new JWindow(frame);
                window.setBounds(150,150,200,200);
                window.show();
        }
}