Re: Layout (desperate) Help

From:

RedGrittyBrick <RedGrittyBrick@SpamWeary.foo>

Newsgroups:

comp.lang.java.programmer

Date:

Mon, 09 Jul 2007 00:22:00 +0100

Message-ID:

<QoSdnali9eMJ7AzbnZ2dnUVZ8qKvnZ2d@bt.com>

pek wrote:

Please please please help me. I've tried every single Layout Manager
and a lot of combinations but cannot still make is work.

I created a prototype and uploaded a screenshot.
Here is how the panels should be placed in normal size:
http://pek.ekei.com/misc/help/exampleLayout_normal.png

Red boxes and buttons NEVER change size.
Yellow boxes expand left and right
and orange boxes expands everywhere.

Here is an example of the same window if resized to a bigger size:
http://pek.ekei.com/misc/help/exampleLayout_expanded.png

Please please help. I have no idea how to break this into smaller
panels and what LayoutManagers to use.
If possible, send me the code at my mail: p3k_me _at_ hotmail _dot_
com
Thank you very much.

Here's one way to do it using only nested BoxLayouts

package Misc;

import java.awt.Color;
import java.awt.Dimension;

import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

public class LayoutProblem extends JPanel {

     LayoutProblem() {
         setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
         add(Box.createRigidArea(new Dimension(0,5)));

         JPanel row1Panel = new JPanel();
         row1Panel.setLayout(
             new BoxLayout(row1Panel, BoxLayout.LINE_AXIS));
         for (int i = 0; i < 8; i++) {
             row1Panel.add(Box.createRigidArea(new Dimension(5, 0)));
             row1Panel.add(makeRedBox());
         }
         row1Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row1Panel.add(Box.createHorizontalGlue()); // else boxes centred
         add(row1Panel);
         add(Box.createRigidArea(new Dimension(0,5)));

         JPanel row2Panel = new JPanel();
         row2Panel.setLayout(
             new BoxLayout(row2Panel, BoxLayout.LINE_AXIS));
         row2Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row2Panel.add(makeYellowBox(100));
         row2Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row2Panel.add(makeYellowBox(100));
         row2Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         add(row2Panel);
         add(Box.createRigidArea(new Dimension(0,5)));

         JPanel row3Panel = new JPanel();
         row3Panel.setLayout(
             new BoxLayout(row3Panel, BoxLayout.LINE_AXIS));
         row3Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row3Panel.add(makeRedBox());
         row3Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row3Panel.add(makeYellowBox(30));
         row3Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         add(row3Panel);
         add(Box.createRigidArea(new Dimension(0,5)));

         JPanel row4Panel = new JPanel();
         row4Panel.setLayout(
             new BoxLayout(row4Panel, BoxLayout.LINE_AXIS));
         row4Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row4Panel.add(makeOrangeBox());
         row4Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         add(row4Panel);
         add(Box.createRigidArea(new Dimension(0,5)));

         JPanel row5Panel = new JPanel();
         row5Panel.setLayout(
             new BoxLayout(row5Panel, BoxLayout.LINE_AXIS));
         row5Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row5Panel.add(makeRedBox());
         row5Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row5Panel.add(makeYellowBox(30));
         row5Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row5Panel.add(makeRedBox());
         row5Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         row5Panel.add(makeButtonPanel());
         row5Panel.add(Box.createRigidArea(new Dimension(5, 0)));
         add(row5Panel);
         add(Box.createRigidArea(new Dimension(0,5)));
     }

     JPanel makeRedBox() {
         JPanel p = new JPanel();
         p.setBackground(Color.RED);
         Dimension d = new Dimension(30,30);
         p.setPreferredSize(d);
         p.setMaximumSize(d);
         return p;
     }

     JPanel makeYellowBox(int height) {
         JPanel p = new JPanel();
         p.setBackground(Color.YELLOW);
         p.setPreferredSize(new Dimension(height, height));
         p.setMaximumSize(new Dimension(9999,height));
         return p;
     }

     JPanel makeOrangeBox() {
         JPanel p = new JPanel();
         p.setBackground(Color.ORANGE);
         Dimension d = new Dimension(100,100);
         p.setPreferredSize(d);
         return p;
     }

     JPanel makeButtonPanel() {
         JPanel p = new JPanel();
         p.setLayout(new BoxLayout(p, BoxLayout.PAGE_AXIS));
         p.add(new JButton("Button"));
         p.add(new JButton("Button"));
         return p;
     }

     public static void main(String[] args) {
         SwingUtilities.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame("");
                 f.add(new LayoutProblem());
                 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                 f.pack();
                 f.setVisible(true);
             }
         });
     }
}

Of course, the buttons need to be made smaller but at this point I got
bored :-)