【发布时间】：2014-07-15 15:07:13
【问题描述】：
我是一名经验有限的新程序员。这是我的第一个 GUI 设计。我正在尝试创建一个带有移动图像图标的国际象棋 GUI，我将在第一次和第二次按下的表格坐标上单击鼠标。但问题是即使我定义了源自 MouseListener 接口的鼠标侦听器方法，我也无法从鼠标的移动中获得合适的坐标。我查看了 MouseEvent 对象的 getX 和 getY 方法的值并看到如下：
mouseEntered (7,3)
mouseExited (3,77)
mouseEntered (3,15)
mouseExited (-1,55)
mouseEntered (61,55)
mouseExited (61,74)
mouseEntered (61,12)
mouseExited (63,33)
mouseEntered (1,33)
mouseExited (6,75)
mouseEntered (6,13)
mouseExited (18,68)
mouseEntered (18,6)
mouseExited (30,70)
mouseEntered (30,8)
mouseExited (62,43)
mouseEntered (0,43)
mouseExited (51,-5)
mouseEntered (51,57)
mouseExited (62,45)
mouseEntered (0,45)
mouseExited (63,17)
mouseEntered (1,17)
mouseExited (32,64)
mouseEntered (32,2)
mouseExited (61,64)
mouseEntered (61,2)
mouseExited (63,15)
mouseEntered (1,15)
mouseExited (-1,25)
mouseEntered (61,25)
mouseExited (-6,49)
mouseEntered (56,49)
mouseExited (-13,50)
mouseEntered (49,50)
mouseExited (-10,34)
mouseEntered (52,34)
mouseExited (8,-6)
mouseEntered (8,56)
mouseExited (1,-7)
mouseEntered (1,55)
mouseExited (13,-4)
mouseEntered (13,58)
mouseExited (57,-1)
mouseEntered (57,61)
mouseExited (62,59)
mouseEntered (0,59)
mouseExited (62,40)
mouseEntered (0,40)
mouseExited (33,-1)
mouseEntered (33,61)
mouseExited (-3,12)
mouseEntered (59,12)
mouseExited (28,-1)
mouseEntered (28,61)
mouseExited (-1,55)
mouseEntered (61,55)
mouseExited (-2,43)
mouseEntered (60,43)
mouseExited (-2,45)
mouseEntered (60,45)
mouseExited (9,62)
mouseEntered (9,0)
mouseExited (62,25)
mouseEntered (0,25)
mouseExited (64,42)
mouseEntered (2,42)
mouseExited (35,64)
mouseEntered (35,2)
mouseExited (62,50)
mouseEntered (0,50)
mouseExited (4,65)
mouseEntered (4,3)
mouseExited (21,63)
mouseEntered (21,1)
mouseExited (47,62)
mouseEntered (47,0)
mouseExited (65,6)
mouseEntered (3,6)
mouseExited (14,-13)
mouseEntered (14,49)
mouseExited (42,-17)
mouseEntered (42,45)
mouseExited (63,-2)
mouseEntered (1,60)
mouseExited (47,64)
mouseEntered (47,2)
mouseExited (63,24)
mouseEntered (1,24)
mouseExited (62,47)
mouseEntered (0,47)
mouseExited (65,24)
虽然我有 8x8 网格布局，但我得到了这些坐标。为什么我得到奇怪的坐标？
此外，我尝试通过鼠标侦听器更改图像图标的位置。因为得到了奇怪的坐标，我什么也做不了。代码如下（没有鼠标监听方法）：
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class GUI extends JFrame implements MouseListener {
private Board auxBoard = new Board(); //8x8 String chess table class
private JPanel[][] squares = new JPanel[8][8];
private JPanel mainPanel = new JPanel(new GridLayout(8, 8));
private Container c;
private String[][] chessBoard = auxBoard.strChessBoard; //invoke chess table on which game will be played
private ImageIcon rookBlack = new ImageIcon(System.getProperty("user.dir")
+ "/icons/br.png");
private ImageIcon rookWhite = new ImageIcon(System.getProperty("user.dir")
+ "/icons/wr.png");
private ImageIcon bishopBlack = new ImageIcon(
System.getProperty("user.dir") + "/icons/bb.png");
private ImageIcon bishopWhite = new ImageIcon(
System.getProperty("user.dir") + "/icons/wb.png");
private ImageIcon knightBlack = new ImageIcon(
System.getProperty("user.dir") + "/icons/bkn.png");
private ImageIcon knightWhite = new ImageIcon(
System.getProperty("user.dir") + "/icons/wkn.png");
private ImageIcon kingBlack = new ImageIcon(System.getProperty("user.dir")
+ "/icons/bk.png");
private ImageIcon kingWhite = new ImageIcon(System.getProperty("user.dir")
+ "/icons/wk.png");
private ImageIcon queenBlack = new ImageIcon(System.getProperty("user.dir")
+ "/icons/bq.png");
private ImageIcon queenWhite = new ImageIcon(System.getProperty("user.dir")
+ "/icons/wq.png");
private ImageIcon pawnBlack = new ImageIcon(System.getProperty("user.dir")
+ "/icons/bp.png");
private ImageIcon pawnWhite = new ImageIcon(System.getProperty("user.dir")
+ "/icons/wp.png");
public GUI() {
c = getContentPane();
setBounds(100, 100, 510, 530);
setBackground(new Color(204, 204, 204));
setDefaultCloseOperation(EXIT_ON_CLOSE);
setTitle("Tittle");
setResizable(false);
c.setLayout(null);
mainPanel.setBounds(3, 3, 500, 500);
mainPanel.setBackground(new Color(255, 255, 255));
c.add(mainPanel);
this.drawChessBoard();
this.arrangeChessPieces();
setVisible(true);
}
private void drawChessBoard(){
for (int y = 0; y < 8; y++)
for (int x = 0; x < 8; x++){
squares[y][x] = new JPanel(new BorderLayout());
squares[y][x].addMouseListener(this);
mainPanel.add(squares[y][x]);
if (y % 2 == 0)
if (x % 2 != 0)
squares[y][x].setBackground(Color.GRAY);
else
squares[y][x].setBackground(Color.CYAN);
else
if (x % 2 == 0)
squares[y][x].setBackground(Color.GRAY);
else
squares[y][x].setBackground(Color.CYAN);
}
}
private void arrangeChessPieces() {
for (int y = 0; y < 8; y++)
for (int x = 0; x < 8; x++) {
this.squares[y][x].add(
this.getPieceObject(chessBoard[y][x]),
BorderLayout.CENTER);
this.squares[y][x].validate();
}
}
private JLabel getPieceObject(String strPieceName) {
JLabel lblTemp;
if (strPieceName.equals("RB"))
lblTemp = new JLabel(this.rookBlack);
else if (strPieceName.equals("BB"))
lblTemp = new JLabel(this.bishopBlack);
else if (strPieceName.equals("NB"))
lblTemp = new JLabel(this.knightBlack);
else if (strPieceName.equals("QB"))
lblTemp = new JLabel(this.queenBlack);
else if (strPieceName.equals("KB"))
lblTemp = new JLabel(this.kingBlack);
else if (strPieceName.equals("PB"))
lblTemp = new JLabel(this.pawnBlack);
else if (strPieceName.equals("RW"))
lblTemp = new JLabel(this.rookWhite);
else if (strPieceName.equals("BW"))
lblTemp = new JLabel(this.bishopWhite);
else if (strPieceName.equals("NW"))
lblTemp = new JLabel(this.knightWhite);
else if (strPieceName.equals("QW"))
lblTemp = new JLabel(this.queenWhite);
else if (strPieceName.equals("KW"))
lblTemp = new JLabel(this.kingWhite);
else if (strPieceName.equals("PW"))
lblTemp = new JLabel(this.pawnWhite);
else
lblTemp = new JLabel();
return lblTemp;
}
public void mouseClicked(MouseEvent e) {
System.out.println("mousePressed (" + e.getX() + "," + e.getY() + ")");
}
public void mousePressed(MouseEvent e) {
System.out.println("mousePressed (" + e.getX() + "," + e.getY() + ")");
repaint();
}
public void mouseReleased(MouseEvent e) {
System.out.println("mouseReleased (" + e.getX() + "," + e.getY() + ")");
}
public void mouseEntered(MouseEvent e) {
System.out.println("mouseEntered (" + e.getX() + "," + e.getY() + ")");
}
public void mouseExited(MouseEvent e) {
System.out.println("mouseExited (" + e.getX() + "," + e.getY() + ")");
}
public static void main(String args[]) {
GUI test = new GUI();
}
}
如何使这些坐标更易于使用？另外，我怎样才能移动棋子在桌子上移动并将它们的第一个和最后一个位置作为 x,y 坐标？ 任何帮助表示赞赏。谢谢。
【问题讨论】：
标签： java user-interface mouseevent mouse chess