import?java.awt.BorderLayout;
import?java.awt.Image;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.awt.image.BufferedImage;
import?java.awt.image.ColorModel;
import?java.awt.image.MemoryImageSource;
import?java.awt.image.PixelGrabber;
import?java.io.File;
import?java.io.IOException;
import?java.util.linkedList;

import?javax.imageio.ImageIO;
import?javax.swing.ImageIcon;
import?javax.swing.JFileChooser;
import?javax.swing.Jframe;
import?javax.swing.JLabel;
import?javax.swing.JMenu;
import?javax.swing.JMenuBar;
import?javax.swing.JMenuItem;
import?javax.swing.JOptionPane;
import?javax.swing.JScrollPane;

public?class?PicHandle?extends?Jframe?{

//保存當前操作的像素矩陣
private?int?currentPixArray[]=null;

//圖像的路徑
private?String?fileString=null;
//用于顯示圖像的標簽
private?JLabel?imageLabel=null;

//加載的圖像
private?BufferedImage?newImage;

//圖像的高和寬
private?int?hw;

//保存歷史操作圖像矩陣
private?linkedList?imageStack=new?linkedList（）;
private?linkedList?tempImageStack=new?linkedList（）;





public?PicHandle（String?title）{
????super（“灰度圖像轉換“）;
????this.setSize（800600）;
????this.setDefaultCloseOperation（Jframe.EXIT_ON_CLOSE）;
??
????//創建菜單
????JMenuBar?jb=new?JMenuBar（）;
????JMenu?fileMenu=new?JMenu（“文件“）;
????jb.add（fileMenu）;
??
????JMenuItem?openImageMenuItem=new?JMenuItem（“打開圖像“）;
????fileMenu.add（openImageMenuItem）;
????openImageMenuItem.addActionListener（new?OpenListener（））;
??
????JMenuItem?exitMenu=new?JMenuItem（“退出“）;
????fileMenu.add（exitMenu）;
????exitMenu.addActionListener（new?ActionListener（）{
?????public?void?actionPerformed（ActionEvent?e）{
??????System.exit（0）;
?????}
????}）;
??
????JMenu?operateMenu=new?JMenu（“圖像處理“）;
????jb.add（operateMenu）;
??
????JMenuItem?RGBtoGrayMenuItem_1=new?JMenuItem（“加權法“）;
????operateMenu.add（RGBtoGrayMenuItem_1）;
????RGBtoGrayMenuItem_1.addActionListener（new?RGBtoGrayActionListener_1（））;
????
????JMenuItem?RGBtoGrayMenuItem_2=new?JMenuItem（“最大值法“）;
????operateMenu.add（RGBtoGrayMenuItem_2）;
????RGBtoGrayMenuItem_2.addActionListener（new?RGBtoGrayActionListener_2（））;
????
????JMenuItem?RGBtoGrayMenuItem_3=new?JMenuItem（“平均值法“）;
????operateMenu.add（RGBtoGrayMenuItem_3）;
????RGBtoGrayMenuItem_3.addActionListener（new?RGBtoGrayActionListener_3（））;
??
????
????JMenu?frontAndBackMenu=new?JMenu（“歷史操作“）;
????jb.add（frontAndBackMenu）;
??
????JMenuItem?backMenuItem=new?JMenuItem（“后退“）;
????frontAndBackMenu.add（backMenuItem）;
????backMenuItem.addActionListener（new?BackActionListener（））;
??
????JMenuItem?frontMenuItem=new?JMenuItem（“前進“）;
????frontAndBackMenu.add（frontMenuItem）;
????frontMenuItem.addActionListener（new?FrontActionListener（））;
??
????this.setJMenuBar（jb）;
??
????imageLabel=new?JLabel（““）;
????JScrollPane?pane?=?new????JScrollPane（imageLabel）;
????this.add（paneBorderLayout.CENTER）;
??
????this.setVisible（true）;
??
}

private?class?OpenListener?implements?ActionList