Chess: java swing help need

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

public class ChessBoardRx extends JFrame implements MouseListener, MouseMotionListener

{

Object currentPosition;

Color currentColor;

Dimension boardSize = new Dimension(600, 600);

JLayeredPane layeredPane;

JPanel board;

JPanel box;

JLabel chessPiece;

int xAdjustment;

int yAdjustment;

Container lastParent;

public ChessBoardRx()

{

// Use a Layered Pane for this this application

layeredPane = new JLayeredPane();

getContentPane().add(layeredPane);

layeredPane.setPreferredSize( boardSize );

layeredPane.addMouseListener( this );

layeredPane.addMouseMotionListener( this );

// Add a chess board to the Layered Pane

board = new JPanel();

// set "board" to the lowest layer (default_layer)

layeredPane.add(board, JLayeredPane.DEFAULT_LAYER);

board.setLayout( new GridLayout(8, 8) );

board.setPreferredSize( boardSize );

board.setBounds(0, 0, boardSize.width, boardSize.height);

addShade();

addPiece();

//populateBoard();

}

public void addShade()

{

for (int i = 0; i < 64; i++)

{

box = new JPanel( new BorderLayout() );

board.add( box, BorderLayout.CENTER );

if( ((i / 8) % 2) == 0)

{

if( (i % 2) ==0)

{

box.setBackground(Color.lightGray);

} else {

box.setBackground( Color.white);

}

} else {

if( (i % 2) ==0)

{

box.setBackground(Color.white);

} else {

box.setBackground(Color.lightGray);

}

}

}

}

//Method for adding chess pieces to the board

public void addPiece()

{

// Add a few pieces to the board

//black pieces

for (int i = 0; i < 64; i++)

{

//adding black pieces

if (i < 8)

{

String fileName = i + ".gif";

JLabel blackPieces = new JLabel( new ImageIcon( fileName ) );

JPanel panel = (JPanel)board.getComponent( i );

panel.add( blackPieces );

}

//adding black pones

if ((i > 7) && (i < 16))

{

String fileName = "8.gif";

JLabel blackPones = new JLabel( new ImageIcon( fileName ) );

JPanel panel = (JPanel)board.getComponent( i );

panel.add( blackPones );

}

//jump to white position (Component 48)

if (i == 16) i = 48;

//adding white pones

if(( i > 47 ) && (i < 56))

{

JLabel whitePones = new JLabel( new ImageIcon("48.gif") );

JPanel panel = (JPanel)board.getComponent( i );

panel.add( whitePones );

}

//adding white pieces

if (i > 55)

{

String fileName = i + ".gif";

JLabel whitePieces = new JLabel( new ImageIcon( fileName ) );

JPanel panel = (JPanel)board.getComponent( i);

panel.add( whitePieces );

}

}

}

private void populateBoard() {

int[][] pos = {

{ 9, 7, 5, 1, 3, 5, 7, 9 },

{ 8, 6, 4, 0, 2, 4, 6, 8 }

};

for(int j = 0; j < 8; j++) {

String fileName = "chessImages/" + pos[0][j] + ".jpg";

JLabel label = new JLabel( new ImageIcon( fileName ) );

JPanel panel = (JPanel)board.getComponent( j );

panel.add( label );

}

for(int j = 8; j < 16; j++) {

String fileName = "chessImages/" + 11 + ".jpg";

JLabel label = new JLabel( new ImageIcon( fileName ) );

JPanel panel = (JPanel)board.getComponent( j );

panel.add( label );

}

for(int j = 56, k = 0; j < 64; j++, k++) {

String fileName = "chessImages/" + pos[1][k] + ".jpg";

JLabel label = new JLabel( new ImageIcon( fileName ) );

JPanel panel = (JPanel)board.getComponent( j );

panel.add( label );

}

for(int j = 48; j < 56; j++) {

String fileName = "chessImages/" + 10 + ".jpg";

JLabel label = new JLabel( new ImageIcon( fileName ) );

JPanel panel = (JPanel)board.getComponent( j );

panel.add( label );

}

}

/*

** Add the selected chess piece to the dragging layer so it can be moved

*/

public void mousePressed(MouseEvent e)

{

chessPiece = null;

Component c = board.findComponentAt(e.getX(), e.getY());

c.setBackground(Color.red);

if (c instanceof JPanel) return;

lastParent = c.getParent();

Point parentLocation = c.getParent().getLocation();

xAdjustment = parentLocation.x - e.getX();

yAdjustment = parentLocation.y - e.getY();

chessPiece = (JLabel)c;

chessPiece.setLocation(e.getX() + xAdjustment, e.getY() + yAdjustment);

chessPiece.setSize(chessPiece.getWidth(), chessPiece.getHeight());

layeredPane.add(chessPiece, JLayeredPane.DRAG_LAYER);

}

/*

** Move the chess piece around

*/

public void mouseDragged(MouseEvent me)

{

if (chessPiece == null) return;

chessPiece.setLocation(me.getX() + xAdjustment, me.getY() + yAdjustment);

}

/*

** Drop the chess piece back onto the chess board

*/

public void mouseReleased(MouseEvent e)

{

Component c = board.findComponentAt(e.getX(), e.getY());

if(c == null) {

layeredPane.remove(chessPiece);

lastParent.add(chessPiece);

Rectangle r = lastParent.getBounds();

chessPiece.setLocation(r.x+xAdjustment, r.y+yAdjustment);

lastParent.validate();

lastParent.repaint();

return;

}

int x = (int)c.getBounds().getX();

int y = (int)c.getBounds().getY();

System.out.println(c.getLocation());

System.out.println(x + " "+ y);

c.setBackground(currentColor);

if (chessPiece == null) return;

chessPiece.setVisible(false);

if (c instanceof JLabel)

{

Container parent = c.getParent();

//remove the piece that is capture

parent.remove(0);

parent.add( chessPiece );

}

else

{

Container parent = (Container)c;

parent.add( chessPiece );

}

chessPiece.setVisible(true);

}

public void mouseClicked(MouseEvent e) {}

public void mouseMoved(MouseEvent e) {}

public void mouseEntered(MouseEvent e) {}

public void mouseExited(MouseEvent e) {}

private static void createAndShowGUI()

{

//Make sure we have nice window decorations

JFrame.setDefaultLookAndFeelDecorated(true);

JFrame frame = new ChessBoardRx();

frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );

//Display the window

frame.pack();

frame.setResizable( false );

frame.setLocationRelativeTo( null );

frame.setVisible(true);

}

public static void main(String[] args)

{

//Schedule a job for the event-dispatching thread:

//creating and showing this application's GUI

javax.swing.SwingUtilities.invokeLater( new Runnable()

{

public void run()

{

createAndShowGUI();

}

});

}

}

crwooda at 2007-7-28 16:54:12 >