代码如下
package com.util;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.GridLayout;import java.awt.Image;import java.awt.Toolkit;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.util.Observable;import javax.swing.JLabel;import javax.swing.JPanel;/** 进图游戏的主界面面板*/public class MainPanel extends JPanel{private static final long serialVersionUID = 1L;private MyButton startButton;private MyButton exitButton;private JLabel helpLabel;private JLabel helpLabel1;private JLabel helpLabel2;private JLabel helpLabel3;private Image image;private JLabel centerlabel;private boolean isStart;private boolean isExit;private Observable obs;public MainPanel(Observable ob){obs = ob;startButton = new MyButton("进入游戏");exitButton = new MyButton("退出游戏");helpLabel = new JLabel();helpLabel1 = new JLabel();helpLabel2 = new JLabel();helpLabel3 = new JLabel();centerlabel = new JLabel();this.setLayout(new BorderLayout());this.helpLabel.setPreferredSize(new Dimension(645,291));this.helpLabel1.setPreferredSize(new Dimension(180,80));this.helpLabel2.setPreferredSize(new Dimension(215,80));this.helpLabel3.setPreferredSize(new Dimension(645,80));this.centerlabel.setPreferredSize(new Dimension(460,80));centerlabel.setLayout(new GridLayout(2,1));centerlabel.add(this.startButton);centerlabel.add(this.exitButton);this.centerlabel.setBackground(new Color(255,255,0));this.add(helpLabel,BorderLayout.NORTH);this.add(helpLabel1,BorderLayout.EAST);this.add(helpLabel2,BorderLayout.WEST);this.add(helpLabel3,BorderLayout.SOUTH);this.add(centerlabel,BorderLayout.CENTER);image = Toolkit.getDefaultToolkit().getImage("imgs/主界面112.png");// image = new ImageIcon(image).getImage();this.startButton.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){boolean flag = true;MainPanel.this.setIsStart(flag);MainPanel.this.obs.notifyObservers(MainPanel.this);}});this.exitButton.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){MainPanel.this.setExit(true);}});}public void paint(Graphics g){super.paint(g);Graphics2D g2 = (Graphics2D) g;g2.drawImage(image,0,0, this.getWidth(), this.getHeight(),this);super.paintComponents(g);}public boolean getIsStart(){return this.isStart;}public void setIsStart(boolean isStart){this.isStart = isStart;}public boolean isExit() {return isExit;}public void setExit(boolean isExit) {this.isExit = isExit;}}
效果图
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