Name: skR10017 Date: 06/30/2000



The following test creates a frame with four buttons.
getLocation function returns location of the first button component.
getComponentAt should return the same component if it's location is
specified as arguments but under
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b09)
getComponentAt returns null.
( It's probably because x coordinate returned by getLocation is less than zero. )

JCK 1.3 java/awt/Layout/GridBagLayoutTest fails due to this reason.

This bug is reproduced only under KDE display manager. Under Enlightment(GNOME) display manager
test passes. Previous Linux JDKs work fine with both display managers.

--------------------------test.java-----------------
import java.awt.*;

public class test {

    public static void main(String[] argv) {

        Frame c = new Frame();
        GridBagLayout gridbag = new GridBagLayout();
        GridBagConstraints constraints = new GridBagConstraints();
        c.setLayout(gridbag);
        constraints.fill = GridBagConstraints.BOTH;
        constraints.weightx = 1.0;
        for(int i=0;i<4;i++)
        {
            Button btn=new Button("Button");
            if(i==3)constraints.gridwidth = GridBagConstraints.REMAINDER;

            gridbag.setConstraints(btn, constraints);
            c.add(btn);
        }
        c.setLocation(100, 100);
        c.setSize(150, 150);
        c.setVisible(true);
        c.doLayout();

        Point l=c.getComponent(0).getLocation();
        System.out.println("First button location="+l);
        System.out.println("Component at="+c.getComponentAt(l.x,l.y));
        System.exit(0);
    }
}
-----------------------output------------------------------
under Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b09):

Note that linux-4 has enlightment logged in, linux-9 has KDE logged in:

[kotl@linux-4 Layout]$ export DISPLAY=linux-4:0
[kotl@linux-4 Layout]$ java test
First button location=java.awt.Point[x=6,y=77]
Component at=java.awt.Button[button0,6,77,37x22,label=Button]

[kotl@linux-4 Layout]$ export DISPLAY=linux-9:0
[kotl@linux-4 Layout]$ java test
First button location=java.awt.Point[x=-1,y=64]
Component at=null
             ^^^^ here test fails
[kotl@linux-4 Layout]$

under previous build (build 1.3.0beta-b08) everything works fine:

[kotl@linux-4 Layout]$ export DISPLAY=linux-4:0
[kotl@linux-4 Layout]$ /export/home/b08/bin/java test
First button location=java.awt.Point[x=6,y=77]
Component at=java.awt.Button[button0,6,77,37x22,label=Button]

[kotl@linux-4 Layout]$ export DISPLAY=linux-9:0
[kotl@linux-4 Layout]$ /export/home/b08/bin/java test
First button location=java.awt.Point[x=3,y=88]
Component at=java.awt.Button[button0,3,88,38x22,label=Button]
[kotl@linux-4 Layout]$
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