about.java

模仿Fyrad32编写的四子棋游戏

package fyrad;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class About extends JDialog
{
	private static final long serialVersionUID = 6143155427616963714L;
	public JDialog About()
	{
		JDialog about=new JDialog();//说明文档对话框 
		JPanel p1=new JPanel();
		JPanel p2=new JPanel();
		JButton ok=new JButton("OK");
		JTextArea ta1=new JTextArea("Connect Four,also called Four in a Row,is a two player's game which"+"\n"
				+"place on a seven by six rectangular board.The goal is to get four"+"\n"
				+"pieces of the same colour in a row.All directions count(horizontal,"+"\n"
				+"vertical and diagonal)."+"\n"
				+""+"\n"
				+"In Fyrad(taken from the Swedish name Fyra i Rad)a move is made by"+"\n"
				+"clicking in a column.Remember that the pieces fall down the column"+"\n"
				+"until hit either the buttom or another piece.",10,35);
		JTextArea ta2=new JTextArea("In Nomal Mode you can play against the computer or a friend."+"\n"
				+""+"\n"
				+"There are six different computer opponents(seven including radom),"+"\n"
				+"where Stupid Joe is the weakest and the Super Pete is the strongest."+"\n"
				+"You can select which level to use(or radom),ie the number of the"+"\n"
				+"moves the computer will look ahead before each move."+"\n"
				+""+"\n"
				+"It is also possible to configure all opponents except Super Pete,"+"\n"
				+"and to save/load settings and games.",10,35);
		JTextArea ta3=new JTextArea("In Network Mode you can play against a friend over the internet or"+"\n"
				+"over the local network."+"\n"
				+""+"\n"
				+"Select whether you shall connect to you opponent,or if you shall wait"+"\n"
				+"him/her to connect to you.If you choose to connect you must enter"+"\n"
				+"your opponents IP-address and make sure he/she has chosen to wait"+"\n"
				+"for connection."+"\n"
				+""+"\n"
				+"If you're unable to connect,check your internet/network connection"+"\n"
				+"and make sure you have enter a valid IP-address.",10,35);
		JTextArea ta4=new JTextArea("Fyrad32"+"\n"+"Version 2.0,build 990523"+"\n"
				+"Copyright 1999 Peter Sunna,Sweden"+"\n"
				+""+"\n"
				+"This program is freeware. If you,like it-pass it to your friends,can't"+"\n"
				+"shop playing it-send me an e-mail,think it occupies too much disk"+"\n"
				+"space-delete it."+"\n"
				+""+"\n"
				+"E-mail:                     [e-mail]"+"\n"
				+"Web Page:              hem.passagen.se/peters/fyrad",10,35);
		JTabbedPane tp=new JTabbedPane();//选项卡
		ta1.setEditable(false);
		ta2.setEditable(false);
		ta3.setEditable(false);
		ta4.setEditable(false);
		p1.add(tp);
		p2.add(ok);
		tp.add("How To Play",ta1);
		tp.add("Nomal Mode",ta2);
		tp.add("Network Mode",ta3);
		tp.add("About Fyrad",ta4);
		tp.setTabPlacement(1);
		ok.addActionListener(new ActionListener()
		{public void actionPerformed(ActionEvent e){System.exit(0);}});
		about.setTitle("About");
		about.getContentPane().add(p1,"Center");
		about.getContentPane().add(p2,"South");
		about.setSize(415,290);
		Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
		int ScreenWidth=screenSize.width;
		int ScreenHeight=screenSize.height;
		int x=(ScreenWidth-about.getWidth())/2;
		int y=(ScreenHeight-about.getHeight())/2;
		about.setLocation(x,y);
		about.setVisible(true);
		return about;
    }
	
}