Painting problem again

Newbie & Debugging Questions
#1

Hi! I don’t know if I’ve some system’s problem or other …

public GameView(){
    JFrame container= new JFrame("Loderunner");
    JPanel panel= (JPanel) container.getContentPane();
    panel.setPreferredSize(new Dimension(460,460));
    panel.setLayout(null);
    setBounds(0,0,460,460);
    panel.add(this);
    setIgnoreRepaint(true);
    container.pack();
    container.setResizable(false);
    container.setVisible(true);
    container.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    requestFocus();
    createBufferStrategy(2);
    strategy=getBufferStrategy();
    loadLevel("level.txt");
}

and this is the game loop


public void gameLoop(){
    while(true){
        Graphics2D g = (Graphics2D) strategy.getDrawGraphics();
        g.setColor(Color.BLACK);
        g.fillRect(0,0,460,460);
        //draw(g);
        g.dispose();
        strategy.show();
    }
}

http://imageshack.us/photo/my-images/23/rqs3.png/ in this link there is the screenshot of my pc so you can see that java don’t paint a part of window

#2

Call pack after setResizble. It doesn’t make sense (I think it is because resizable and nonresizable frames are subtlely different) but it puts components in the wrong spot if you do not.

#3

So, with setResizable(true) actually work , but I don’t want that the frame is Resizable … and I take this code from space invaders 101 by Kevin Glass…How is possible that it is wrong??
Also here in a jgo tutorial : http://www.java-gaming.org/topics/basic-game/21919/view.html

#4

The tutorial is wrong. Simply make container.pack(); the last line before container.setVisible(true); setResizable may change the size of the frame on Windows, so you must call pack again for every time you change the resizable property.

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class Test
{
  public static void main(String[] args)  
  {
    final JFrame jf = new JFrame();
    final JPanel jp = new JPanel()
    {
      @Override public void paint(Graphics g)
      {
        g.setColor(Color.black);
        g.drawLine(0, 0, 199, 0);
        g.drawLine(0, 0, 199, 199);
        g.drawLine(0, 199, 199, 0);
        g.drawLine(0, 199, 199, 199);
        g.drawLine(0, 0, 199, 0);
        g.drawLine(0, 0, 0, 199);
        g.drawLine(199, 0, 199, 199);
        
      }
    };
    Dimension d = new Dimension(200, 200);
    jp.setMinimumSize(d);
    jp.setPreferredSize(d);
    jf.add(jp);
    jf.addKeyListener(new KeyAdapter()
    {
      @Override public void keyPressed(KeyEvent e)
      {
        final int k = e.getKeyCode();
        if(k == KeyEvent.VK_1)
        {
          jf.setResizable(!jf.isResizable());
        }
        if(k == KeyEvent.VK_2)
        {
          jf.pack();
        }
      }
      
    });
    jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    jf.pack();
    jf.setVisible(true);
  }
}
#5

Thanks for answer , take patience… Now the window have right dimension , but I can resize it , and I don’t want this …
This is my code …

JFrame container= new JFrame("Loderunner");
    JPanel panel= (JPanel) container.getContentPane();
    panel.setPreferredSize(new Dimension(460,460));
    panel.setMinimumSize(new Dimension(460,460));
    panel.setLayout(null);
    setBounds(0,0,460,460);
    panel.add(this);
    setIgnoreRepaint(true);
    requestFocus();
    addKeyListener(new KeyHandle());
    container.pack();
    container.setVisible(true);
    container.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    createBufferStrategy(2);
    strategy=getBufferStrategy();
    loadLevel("level.txt");
}

What I must do??
P.S. What’s is the wrong tutorial ?? because I have other problem with kevin glass’ code …

#6 
panel.setResizable(false)
#7

According to IDE the method setResizable(false) dosn’t exist for a jpanel…

#8 
jFrame.setResizable(false);


    JFrame container= new JFrame("Loderunner");
    JPanel panel= (JPanel) container.getContentPane();
    panel.setPreferredSize(new Dimension(460,460));
    panel.setMinimumSize(new Dimension(460,460));
    panel.setLayout(null);
    setBounds(0,0,460,460);
    panel.add(this);
    setIgnoreRepaint(true);
    requestFocus();
    addKeyListener(new KeyHandle());
    container.setResizable(false); // FIRST!
    container.pack();             // SECOND!
    container.setVisible(true);    // THIRD!
    container.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    createBufferStrategy(2);
    strategy=getBufferStrategy();
    loadLevel("level.txt");
}
#9

Yeah ! Work ! Thanks ;D

#10

Hi , casually I have find a bug in this code I don’t know why but if I set the a too little size the problem return!
So i post an image for example :
Size 120 , 120 http://imageshack.us/photo/my-images/825/ne6c.png/
Size 100 , 100 http://imageshack.us/photo/my-images/819/1i1o.png/
so smaller size = more large gap

#11

Your panel is the correct size. The frame has a minimum size that is system dependent and can differ based on the type of window. If you try to force a very small window, it may be expanded. This best you could do with a view port that small would be to center the box and use a border. Or you could just draw more.

#12

Nono , it was just for curiosity , Thanks Several ;D