Name: ddT132432 Date: 08/07/2001


java version "1.3.0rc1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc1-T)
Java HotSpot(TM) Client VM (build 1.3.0rc1-S, mixed mode)


Here's my test case:

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

public class Test2
{
  public static void main (String[] args)
  {
    Test2 t = new Test2();
  }

  public Test2()
  {
    JButton button = new JButton("button nottub");

    Box vBox = Box.createVerticalBox();
    vBox.add (Box.createGlue());
    vBox.add (button);
    vBox.add (Box.createGlue());

    Box hBox = Box.createHorizontalBox();
    hBox.add (Box.createGlue());
    hBox.add (vBox);
    hBox.add (Box.createGlue());

    JFrame frame = new JFrame ();
    frame.setContentPane(hBox);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.show();
  }

}


The code should create a button, "packed" and centered in the middle
of the frame, which remains centered when the frame is resized.

There are at least a couple of things wrong. First, if I resize the
frame to be wide, the button is clearly not centered. It's
somewhat to the left, as if hBox's right-hand glue took up too much
of the extra space.

Secondly, if I resize the frame to be smaller vertically or
horizontally, the button would redraw itself, and the previous button
would remain. This won't happen if I resize the frame smaller in
both dimensions at once. Moreover, if I hide and re-expose part of
the frame, it looks even worse. (This might arguably not be a bug;
glue components are specified as non-opaque.)

This problem might be related to 4352274 and 4140481. I did not see
the glue-related problem mentioned anywhere in Bug Parade (though
again, it might be arguably correct behavior).
(Review ID: 129395)
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