本文介绍了井字游戏Java MouseListener的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
因此，我一直在使用MVC开发井字游戏应用程序.我在实现视图页面中的鼠标侦听器时遇到困难.我需要板上的每个面板都是可单击的.有人可以帮我吗?
So I've been working on a Tic Tac Toe App using MVC. I'm having difficulties implementing the mouse Listener in the views page. I need each panel of the board to be clickable. Can someone help me?
public class TicTacToeView extends JFrame{
private JButton oButton, xButton;
public JPanel board;
public ArrayList<Shape> shapes;
public TicTacToeView(){
shapes = new ArrayList<Shape>();
JPanel topPanel=new JPanel();
topPanel.setLayout(new FlowLayout());
add(topPanel, BorderLayout.NORTH);
add(board=new Board(), BorderLayout.CENTER);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(500, 500);
}
private class Board extends JPanel {
public void paintComponent(Graphics g) {
super.paintComponent(g);
int w=getWidth();
int h=getHeight();
Graphics2D g2d = (Graphics2D) g;
g2d.setPaint(Color.WHITE);
g2d.fill(new Rectangle2D.Double(0, 0, w, h));
g2d.setPaint(Color.BLACK);
g2d.setStroke(new BasicStroke(4));
g2d.draw(new Line2D.Double(0, h/3, w, h/3));
g2d.draw(new Line2D.Double(0, h*2/3, w, h*2/3));
g2d.draw(new Line2D.Double(w/3, 0, w/3, h));
g2d.draw(new Line2D.Double(w*2/3, 0, w*2/3, h));
//draw circles and xs by visiting elements in the array List.
for(Shape shape : shapes){
g2d.setPaint(Color.BLUE);
g2d.draw(shape);
}
}
}
public void addMouseListener(MouseListener ml){
}
}
推荐答案
如果每个单元格都是它自己的Shape(如Rectangle)，会更容易，但是，使用当前代码，您可以使用类似...
It would be easier if each cell was it's own Shape (like a Rectangle), but, with your current code, you could use something like...
addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
int w = getWidth();
int h = getHeight();
selectedCell = null;
for (int col = 0; col < 3 && selectedCell == null; col++) {
for (int row = 0; row < 3; row++) {
int x = (w / 3) * col;
int y = (h / 3) * row;
Rectangle cell = new Rectangle(x, y, w / 3, h / 3);
if (cell.contains(e.getPoint())) {
System.out.println("In");
selectedCell = cell;
repaint();
break;
}
}
}
}
});
现在，所有这些操作就是循环遍历每一列和每一行，创建一个Rectangle并检查它是否包含MouseEvent点.如果找到匹配项，则会将单元格的矩形分配给实例字段，我曾在您的paint方法中突出显示该字段.
Now, all this does, is loops through each column and row, creating a Rectangle and checking to see if it contains the MouseEvent point. If it finds a match, it assigns the cell's rectangle to a instance field, which I used to highlight the in your paint method.
这就是为什么将每个单元格存储为Rectangle到List
This is why it would be easier to have each cell stored as a Rectangle in a List
作为可运行的示例...
As a runnable example...
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TicTacToeView extends JFrame {
private JButton oButton, xButton;
public JPanel board;
public ArrayList<Shape> shapes;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new TicTacToeView();
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public TicTacToeView() {
shapes = new ArrayList<Shape>();
JPanel topPanel = new JPanel();
topPanel.setLayout(new FlowLayout());
add(topPanel, BorderLayout.NORTH);
add(board = new Board(), BorderLayout.CENTER);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private class Board extends JPanel {
private Rectangle selectedCell = null;
public Board() {
addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
int w = getWidth();
int h = getHeight();
selectedCell = null;
for (int col = 0; col < 3 && selectedCell == null; col++) {
for (int row = 0; row < 3; row++) {
int x = (w / 3) * col;
int y = (h / 3) * row;
Rectangle cell = new Rectangle(x, y, w / 3, h / 3);
if (cell.contains(e.getPoint())) {
System.out.println("In");
selectedCell = cell;
repaint();
break;
}
}
}
}
});
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
int w = getWidth();
int h = getHeight();
Graphics2D g2d = (Graphics2D) g;
g2d.setPaint(Color.WHITE);
g2d.fill(new Rectangle2D.Double(0, 0, w, h));
if (selectedCell != null) {
g2d.setColor(Color.BLUE);
g2d.fill(selectedCell);
}
g2d.setPaint(Color.BLACK);
g2d.setStroke(new BasicStroke(4));
g2d.draw(new Line2D.Double(0, h / 3, w, h / 3));
g2d.draw(new Line2D.Double(0, h * 2 / 3, w, h * 2 / 3));
g2d.draw(new Line2D.Double(w / 3, 0, w / 3, h));
g2d.draw(new Line2D.Double(w * 2 / 3, 0, w * 2 / 3, h));
//draw circles and xs by visiting elements in the array List.
for (Shape shape : shapes) {
g2d.setPaint(Color.BLUE);
g2d.draw(shape);
}
}
}
}
这篇关于井字游戏Java MouseListener的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！