Re: align Swing JLabels and JTextFields vertically with

From:

Knute Johnson <nospam@knutejohnson.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 21 Apr 2011 14:19:41 -0700

Message-ID:

<Nb1sp.13785$vC5.10856@newsfe01.iad>

On 04/21/2011 01:56 PM, Knute Johnson wrote:

I posted a simple solution to this a few weeks ago. I don't remember if
it was you who posted or not but nothing was heard out of the original
poster.

The solution basically to not use multiple JPanels but to put all of the
fields in one panel, add some extra padding where you want the borders
and then to put the border around the bounds of the components.

I'll see if I can find it again.

I found it. It won't work quite as you have specified as it only allows
one border per JComponent. I've got a couple of ideas though, I'll get
back to you.

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

public class test extends JPanel {
     JLabel l1,l2;
     JTextField tf1,tf2;

     public test() {
         super(new GridBagLayout());

         GridBagConstraints c = new GridBagConstraints();
         c.gridy = 0; c.insets = new Insets(2,2,2,2);
         c.fill = GridBagConstraints.HORIZONTAL;

         add(new JLabel("Label 000"),c);
         add(new JTextField("Field 0"),c);

         ++c.gridy;
         c.insets = new Insets(20,2,2,2);
         l1 = new JLabel("Label 1");
         add(l1,c);
         tf1 = new JTextField("Field 00001");
         add(tf1,c);

         ++c.gridy;
         c.insets = new Insets(2,2,2,2);
         l2 = new JLabel("Label 2");
         add(l2,c);
         tf2 = new JTextField("Field 2");
         add(tf2,c);

         setBorder(new MyTitledBorder(
          BorderFactory.createLineBorder(Color.BLACK,2),"Title"));
     }

     class MyTitledBorder extends TitledBorder {
         Rectangle rv;

         public MyTitledBorder(Border border, String title) {
             super(border,title);
         }

         public void paintBorder(Component c, Graphics g, int x, int y,
          int width, int height) {
             rv = l1.getBounds();
             rv.add(tf1.getBounds());
             rv.add(l2.getBounds());
             rv.add(tf2.getBounds());
             rv.grow(10,10);

             super.paintBorder(c,g,(int)rv.getX(),(int)rv.getY()-10,
              (int)rv.getWidth(),(int)rv.getHeight()+10);
         }
     }

     public static void main(String[] args) {
         EventQueue.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame();
                 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                 test t = new test();
                 f.add(t,BorderLayout.CENTER);
                 f.setSize(320,240);
                 f.setVisible(true);
             }
         });
     }
}

--

Knute Johnson
s/knute/nospam/