Name: rk38400 Date: 04/07/98


The problem is that JRadioButtons with Icons look pretty strange.
The behaviour that I would expect is that the buttons should size
themself after the icons. The way it currently works is that the
Image is off-center, hiding the left edge of the icon, and there
are 'insets' top, under and right making the button much bigger
than it should be.
The problem was there under swing-0.7 as well, but much less
severe. I don't remember it under swing-0.6.1 .

The code supplied demonstrates this.
Note that the Icons are actually square, but the left edge is
hidden by the border.

To compile:

Copy the code to a file called JButtonBug.java, and compile
with:
>javac JButtonBug.java

Make sure swing is in your classpath.

/Joakim Lindfors



Code follows:

--------------------------------------------------------
import java.awt.*;
import java.awt.image.*;
import com.sun.java.swing.*;

public class JButtonBug extends Frame{
JPanel buttonPanel=new JPanel();

ImageIcon[] icons=new ImageIcon[3];


public static void main(String[] args){
JButtonBug theApp=new JButtonBug();
}

public JButtonBug(){

/*try{
UIManager.setLookAndFeel(
UIManager.getSystemLookAndFeelClassName());
}
catch(Exception e){
System.out.println("Could not set LookAndFeel");
}*/

int[] redArray=new int[20*20];
int red=Color.red.getRGB();
for (int i=0; i<redArray.length; i++){
redArray[i]=red;
}
icons[0]=new ImageIcon( createImage(
new MemoryImageSource(20,20,redArray,0,20)));

int[] blueArray=new int[20*20];
int blue=Color.blue.getRGB();
for (int i=0; i<blueArray.length; i++){
blueArray[i]=blue;
}
icons[1]=new ImageIcon( createImage(
new MemoryImageSource(20,20,blueArray,0,20)));

int[] greenArray=new int[20*20];
int green=Color.green.getRGB();
for (int i=0; i<greenArray.length; i++){
greenArray[i]=green;
}
icons[2]=new ImageIcon( createImage(
new MemoryImageSource(20,20,greenArray,0,20)));


GridBagLayout gridBag=new GridBagLayout();
    GridBagConstraints c=new GridBagConstraints();
    buttonPanel.setLayout(gridBag);

for (int i=0; i<12; i++){
   JRadioButton button=new JRadioButton(icons[i%3]);
   button.setBorderPainted(true);
   if ((i%3)==(2)){
   c.gridwidth=GridBagConstraints.REMAINDER;
   }
   else{
   c.gridwidth=1;
   }
   gridBag.setConstraints(button,c);
   buttonPanel.add(button);
   }

add(buttonPanel);

pack();
show();
}
}
(Review ID: 25826)
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