JAVA截屏程序(第三版)

JAVA截屏程序(第三版)

呵呵,昨天也看到朋友的留言,又增加了一些功能,

1,增加了一个把截到的图片复制到系统的剪帖板,这样一来就可以直接粘帖到word,photoshop,画图等程序里面了

2,增加了每截一张图片都会新开一个tab来放它,并且tab里面各自有各自的操作方法.

点击下载源文件和可执行JAR文件

/*
 * CaptureScreen.java
 *
 * Created on 2007年8月30日, 下午12:46
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
  */

package  hadeslee.swing;

/**
 *
 *  @author  lbf
  */
import  java.awt. * ;
import  java.awt.datatransfer.DataFlavor;
import  java.awt.datatransfer.Transferable;
import  java.awt.datatransfer.UnsupportedFlavorException;
import  java.awt.event. * ;
import  javax.swing. * ;
import  java.io. * ;
import  javax.imageio. * ;
import  java.awt.image. * ;

public   class  CaptureScreen  extends  JFrame  implements  ActionListener{
     private  JButton start,cancel;
     private  JPanel c;
     private  BufferedImage get;
     private  JTabbedPane jtp; // 一个放置很多份图片
     private   int  index; // 一个一直会递增的索引,用于标认图片
     private  JRadioButton java,system; // JAVA界面,系统界面
     /**  Creates a new instance of CaptureScreen  */
     public  CaptureScreen() {
         super ( " 屏幕截取软件(第三版) " );
         try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception exe){
            exe.printStackTrace();
        }
        initWindow();
        initOther();
    }
     private   void  initOther(){
        jtp = new  JTabbedPane(JTabbedPane.TOP,JTabbedPane.SCROLL_TAB_LAYOUT);
    }
     private   void  initWindow(){
        start = new  JButton( " 开始截取 " );
        cancel = new  JButton( " 退出 " );
        start.addActionListener( this );
        cancel.addActionListener( this );
        JPanel buttonJP = new  JPanel();
        c = new  JPanel( new  BorderLayout());
        JLabel jl = new  JLabel( " 屏幕截取 " ,JLabel.CENTER);
        JLabel jl1 = new  JLabel( " 作者：千里冰封 " ,JLabel.CENTER);
        jl.setFont( new  Font( " 黑体 " ,Font.BOLD, 40 ));
        jl1.setFont( new  Font( " 宋体 " ,Font.BOLD, 20 ));
        jl.setForeground(Color.RED);
        jl1.setForeground(Color.BLUE);
        c.add(jl,BorderLayout.CENTER);
        c.add(jl1,BorderLayout.SOUTH);
        buttonJP.add(start);
        buttonJP.add(cancel);
        buttonJP.setBorder(BorderFactory.createTitledBorder( " 公共操作区 " ));
        JPanel jp = new  JPanel(); // 放两个单选按钮的面板
        jp.add(java = new  JRadioButton( " java界面 " ));
        jp.add(system = new  JRadioButton( " 系统界面 " , true ));
        java.addActionListener( this );
        system.addActionListener( this );
        jp.setBorder(BorderFactory.createTitledBorder( " 界面风格 " ));
        ButtonGroup bg = new  ButtonGroup();
        bg.add(java);
        bg.add(system);
        JPanel all = new  JPanel();
        all.add(jp);
        all.add(buttonJP);
         this .getContentPane().add(c,BorderLayout.CENTER);
         this .getContentPane().add(all,BorderLayout.SOUTH);
         this .setSize( 500 , 400 );
         this .setLocationRelativeTo( null );
         this .setVisible( true );
         this .setAlwaysOnTop( true );
         this .setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
     private   void  updates(){
         this .setVisible( true );
         if (get != null ){
             // 如果索引是0,则表示一张图片都没有被加入过,
             // 则要清除当前的东西,重新把tabpane放进来
             if (index == 0 ){
                c.removeAll();
                c.add(jtp,BorderLayout.CENTER);
            } else { // 否则的话,直接对tabpane添加面板就可以了
                 // 就什么都不用做了
            }
            PicPanel pic = new  PicPanel(get);
            jtp.addTab( " 图片 " + ( ++ index),pic);
            jtp.setSelectedComponent(pic);
            SwingUtilities.updateComponentTreeUI(c);
        }
    }
     private   void  doStart(){
         try {
             this .setVisible( false );
            Thread.sleep( 500 ); // 睡500毫秒是为了让主窗完全不见
            Robot ro = new  Robot();
            Toolkit tk = Toolkit.getDefaultToolkit();
            Dimension di = tk.getScreenSize();
            Rectangle rec = new  Rectangle( 0 , 0 ,di.width,di.height);
            BufferedImage bi = ro.createScreenCapture(rec);
            JFrame jf = new  JFrame();
            Temp temp = new  Temp(jf,bi,di.width,di.height);
            jf.getContentPane().add(temp,BorderLayout.CENTER);
            jf.setUndecorated( true );
            jf.setSize(di);
            jf.setVisible( true );
            jf.setAlwaysOnTop( true );
        }  catch (Exception exe){
            exe.printStackTrace();
        }
    }
     /**
     *公用的处理保存图片的方法
     *这个方法不再私有了
      */
     public    void  doSave(BufferedImage get){
         try {
             if (get == null ){
                JOptionPane.showMessageDialog( this , " 图片不能为空!! " , " 错误 " ,JOptionPane.ERROR_MESSAGE);
                 return ;
            }
            JFileChooser jfc = new  JFileChooser( " . " );
            jfc.addChoosableFileFilter( new  GIFfilter());
            jfc.addChoosableFileFilter( new  BMPfilter());
            jfc.addChoosableFileFilter( new  JPGfilter());
            jfc.addChoosableFileFilter( new  PNGfilter());
             int  i = jfc.showSaveDialog( this );
             if (i == JFileChooser.APPROVE_OPTION){
                File file = jfc.getSelectedFile();
                String about = " PNG " ;
                String ext = file.toString().toLowerCase();
                javax.swing.filechooser.FileFilter ff = jfc.getFileFilter();
                 if (ff  instanceof  JPGfilter){
                     if ( ! ext.endsWith( " .jpg " )){
                        String ns = ext + " .jpg " ;
                        file = new  File(ns);
                        about = " JPG " ;
                    }
                }  else   if (ff  instanceof  PNGfilter){
                     if ( ! ext.endsWith( " .png " )){
                        String ns = ext + " .png " ;
                        file = new  File(ns);
                        about = " PNG " ;
                    }
                } else   if (ff  instanceof  BMPfilter){
                     if ( ! ext.endsWith( " .bmp " )){
                        String ns = ext + " .bmp " ;
                        file = new  File(ns);
                        about = " BMP " ;
                    }
                } else   if (ff  instanceof  GIFfilter){
                     if ( ! ext.endsWith( " .gif " )){
                        String ns = ext + " .gif " ;
                        file = new  File(ns);
                        about = " GIF " ;
                    }
                }
                 if (ImageIO.write(get,about,file)){
                    JOptionPane.showMessageDialog( this , " 保存成功！ " );
                }  else
                    JOptionPane.showMessageDialog( this , " 保存失败！ " );
            }
        }  catch (Exception exe){
            exe.printStackTrace();
        }
    }
     /**  
     *公共的处理把当前的图片加入剪帖板的方法
      */
     public   void  doCopy( final  BufferedImage image){
         try {
             if (get == null ){
                JOptionPane.showMessageDialog( this , " 图片不能为空!! " , " 错误 " ,JOptionPane.ERROR_MESSAGE);
                 return ;
            }
            Transferable trans  =   new  Transferable(){
                 public  DataFlavor[] getTransferDataFlavors() {
                     return   new  DataFlavor[] { DataFlavor.imageFlavor };
                }
                 public   boolean  isDataFlavorSupported(DataFlavor flavor) {
                     return  DataFlavor.imageFlavor.equals(flavor);
                }
                 public  Object getTransferData(DataFlavor flavor)  throws  UnsupportedFlavorException, IOException {
                     if (isDataFlavorSupported(flavor))
                         return  image;
                     throw   new  UnsupportedFlavorException(flavor);
                }
                
            };
            Toolkit.getDefaultToolkit().getSystemClipboard().setContents(trans,  null );
            JOptionPane.showMessageDialog( this , " 已复制到系统粘帖板!! " );
        } catch (Exception exe){
            exe.printStackTrace();
            JOptionPane.showMessageDialog( this , " 复制到系统粘帖板出错!! " , " 错误 " ,JOptionPane.ERROR_MESSAGE);
        }
    }
     // 处理关闭事件
     private   void  doClose(Component c){
        jtp.remove(c);
        c = null ;
        System.gc();
    }
     public   void  actionPerformed(ActionEvent ae){
        Object source = ae.getSource();
         if (source == start){
            doStart();
        }  else   if (source == cancel){
            System.exit( 0 );
        } else   if (source == java){
             try {
                UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
                SwingUtilities.updateComponentTreeUI( this );
            } catch (Exception exe){
                exe.printStackTrace();
            }
        } else   if (source == system){
             try {
                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                SwingUtilities.updateComponentTreeUI( this );
            } catch (Exception exe){
                exe.printStackTrace();
            }
        }
    }
     // 一个内部类,它表示一个面板,一个可以被放进tabpane的面板
     // 也有自己的一套处理保存和复制的方法
     private   class  PicPanel  extends  JPanel  implements  ActionListener{
        JButton save,copy,close; // 表示保存,复制,关闭的按钮
        BufferedImage get; // 得到的图片
         public  PicPanel(BufferedImage get){
             super ( new  BorderLayout());
             this .get = get;
            initPanel();
        }
         private   void  initPanel(){
            save = new  JButton( " 保存(S) " );
            copy = new  JButton( " 复制到剪帖板(C) " );
            close = new  JButton( " 关闭(X) " );
            save.setMnemonic( ' S ' );
            copy.setMnemonic( ' C ' );
            close.setMnemonic( ' X ' );
            JPanel buttonPanel = new  JPanel();
            buttonPanel.add(copy);
            buttonPanel.add(save);
            buttonPanel.add(close);
            JLabel icon = new  JLabel( new  ImageIcon(get));
             this .add( new  JScrollPane(icon),BorderLayout.CENTER);
             this .add(buttonPanel,BorderLayout.SOUTH);
            save.addActionListener( this );
            copy.addActionListener( this );
            close.addActionListener( this );
        }
         public   void  actionPerformed(ActionEvent e) {
            Object source = e.getSource();
             if (source == save){
                doSave(get);
            } else   if (source == copy){
                doCopy(get);
            } else   if (source == close){
                get = null ;
                doClose( this );
            }
        }
    }
     // 保存BMP格式的过滤器
     private   class  BMPfilter  extends  javax.swing.filechooser.FileFilter{
         public  BMPfilter(){
            
        }
         public   boolean  accept(File file){
             if (file.toString().toLowerCase().endsWith( " .bmp " ) ||
                    file.isDirectory()){
                 return   true ;
            }  else
                 return   false ;
        }
         public  String getDescription(){
             return   " *.BMP(BMP图像) " ;
        }
    }
     // 保存JPG格式的过滤器
     private   class  JPGfilter  extends  javax.swing.filechooser.FileFilter{
         public  JPGfilter(){
            
        }
         public   boolean  accept(File file){
             if (file.toString().toLowerCase().endsWith( " .jpg " ) ||
                    file.isDirectory()){
                 return   true ;
            }  else
                 return   false ;
        }
         public  String getDescription(){
             return   " *.JPG(JPG图像) " ;
        }
    }
     // 保存GIF格式的过滤器
     private   class  GIFfilter  extends  javax.swing.filechooser.FileFilter{
         public  GIFfilter(){
            
        }
         public   boolean  accept(File file){
             if (file.toString().toLowerCase().endsWith( " .gif " ) ||
                    file.isDirectory()){
                 return   true ;
            }  else
                 return   false ;
        }
         public  String getDescription(){
             return   " *.GIF(GIF图像) " ;
        }
    }
    
     // 保存PNG格式的过滤器
     private   class  PNGfilter  extends  javax.swing.filechooser.FileFilter{
         public   boolean  accept(File file){
             if (file.toString().toLowerCase().endsWith( " .png " ) ||
                    file.isDirectory()){
                 return   true ;
            }  else
                 return   false ;
        }
         public  String getDescription(){
             return   " *.PNG(PNG图像) " ;
        }
    }
     // 一个暂时类，用于显示当前的屏幕图像
     private   class  Temp  extends  JPanel  implements  MouseListener,MouseMotionListener{
         private  BufferedImage bi;
         private   int  width,height;
         private   int  startX,startY,endX,endY,tempX,tempY;
         private  JFrame jf;
         private  Rectangle select = new  Rectangle( 0 , 0 , 0 , 0 ); // 表示选中的区域
         private  Cursor cs = new  Cursor(Cursor.CROSSHAIR_CURSOR); // 表示一般情况下的鼠标状态
         private  States current = States.DEFAULT; //  表示当前的编辑状态
         private  Rectangle[] rec; // 表示八个编辑点的区域
         // 下面四个常量,分别表示谁是被选中的那条线上的端点
         public   static   final   int  START_X = 1 ;
         public   static   final   int  START_Y = 2 ;
         public   static   final   int  END_X = 3 ;
         public   static   final   int  END_Y = 4 ;
         private   int  currentX,currentY; // 当前被选中的X和Y,只有这两个需要改变
         private  Point p = new  Point(); // 当前鼠标移的地点
         private   boolean  showTip = true ; // 是否显示提示.如果鼠标左键一按,则提示不再显了
         public  Temp(JFrame jf,BufferedImage bi, int  width, int  height){
             this .jf = jf;
             this .bi = bi;
             this .width = width;
             this .height = height;
             this .addMouseListener( this );
             this .addMouseMotionListener( this );
            initRecs();
        }
         private   void  initRecs(){
            rec = new  Rectangle[ 8 ];
             for ( int  i = 0 ;i < rec.length;i ++ ){
                rec[i] = new  Rectangle();
            }
        }
         public   void  paintComponent(Graphics g){
            g.drawImage(bi, 0 , 0 ,width,height, this );
            g.setColor(Color.RED);
            g.drawLine(startX,startY,endX,startY);
            g.drawLine(startX,endY,endX,endY);
            g.drawLine(startX,startY,startX,endY);
            g.drawLine(endX,startY,endX,endY);
             int  x = startX < endX ? startX:endX;
             int  y = startY < endY ? startY:endY;
            select = new  Rectangle(x,y,Math.abs(endX - startX),Math.abs(endY - startY));
             int  x1 = (startX + endX) / 2 ;
             int  y1 = (startY + endY) / 2 ;
            g.fillRect(x1 - 2 ,startY - 2 , 5 , 5 );
            g.fillRect(x1 - 2 ,endY - 2 , 5 , 5 );
            g.fillRect(startX - 2 ,y1 - 2 , 5 , 5 );
            g.fillRect(endX - 2 ,y1 - 2 , 5 , 5 );
            g.fillRect(startX - 2 ,startY - 2 , 5 , 5 );
            g.fillRect(startX - 2 ,endY - 2 , 5 , 5 );
            g.fillRect(endX - 2 ,startY - 2 , 5 , 5 );
            g.fillRect(endX - 2 ,endY - 2 , 5 , 5 );
            rec[ 0 ] = new  Rectangle(x - 5 ,y - 5 , 10 , 10 );
            rec[ 1 ] = new  Rectangle(x1 - 5 ,y - 5 , 10 , 10 );
            rec[ 2 ] = new  Rectangle((startX > endX ? startX:endX) - 5 ,y - 5 , 10 , 10 );
            rec[ 3 ] = new  Rectangle((startX > endX ? startX:endX) - 5 ,y1 - 5 , 10 , 10 );
            rec[ 4 ] = new  Rectangle((startX > endX ? startX:endX) - 5 ,(startY > endY ? startY:endY) - 5 , 10 , 10 );
            rec[ 5 ] = new  Rectangle(x1 - 5 ,(startY > endY ? startY:endY) - 5 , 10 , 10 );
            rec[ 6 ] = new  Rectangle(x - 5 ,(startY > endY ? startY:endY) - 5 , 10 , 10 );
            rec[ 7 ] = new  Rectangle(x - 5 ,y1 - 5 , 10 , 10 );
             if (showTip){
                g.setColor(Color.CYAN);
                g.fillRect(p.x,p.y, 170 , 20 );
                g.setColor(Color.RED);
                g.drawRect(p.x,p.y, 170 , 20 );
                g.setColor(Color.BLACK);
                g.drawString( " 请按住鼠标左键不放选择截图区 " ,p.x,p.y + 15 );
            }
        }
         // 根据东南西北等八个方向决定选中的要修改的X和Y的座标
         private   void  initSelect(States state){
             switch (state){
                 case  DEFAULT:
                    currentX = 0 ;
                    currentY = 0 ;
                     break ;
                 case  EAST:
                    currentX = (endX > startX ? END_X:START_X);
                    currentY = 0 ;
                     break ;
                 case  WEST:
                    currentX = (endX > startX ? START_X:END_X);
                    currentY = 0 ;
                     break ;
                 case  NORTH:
                    currentX = 0 ;
                    currentY = (startY > endY ? END_Y:START_Y);
                     break ;
                 case  SOUTH:
                    currentX = 0 ;
                    currentY = (startY > endY ? START_Y:END_Y);
                     break ;
                 case  NORTH_EAST:
                    currentY = (startY > endY ? END_Y:START_Y);
                    currentX = (endX > startX ? END_X:START_X);
                     break ;
                 case  NORTH_WEST:
                    currentY = (startY > endY ? END_Y:START_Y);
                    currentX = (endX > startX ? START_X:END_X);
                     break ;
                 case  SOUTH_EAST:
                    currentY = (startY > endY ? START_Y:END_Y);
                    currentX = (endX > startX ? END_X:START_X);
                     break ;
                 case  SOUTH_WEST:
                    currentY = (startY > endY ? START_Y:END_Y);
                    currentX = (endX > startX ? START_X:END_X);
                     break ;
                 default :
                    currentX = 0 ;
                    currentY = 0 ;
                     break ;
            }
        }
         public   void  mouseMoved(MouseEvent me){
            doMouseMoved(me);
            initSelect(current);
             if (showTip){
                p = me.getPoint();
                repaint();
            }
        }
         // 特意定义一个方法处理鼠标移动,是为了每次都能初始化一下所要选择的地区
         private   void  doMouseMoved(MouseEvent me){
             if (select.contains(me.getPoint())){
                 this .setCursor( new  Cursor(Cursor.MOVE_CURSOR));
                current = States.MOVE;
            }  else {
                States[] st = States.values();
                 for ( int  i = 0 ;i < rec.length;i ++ ){
                     if (rec[i].contains(me.getPoint())){
                        current = st[i];
                         this .setCursor(st[i].getCursor());
                         return ;
                    }
                }
                 this .setCursor(cs);
                current = States.DEFAULT;
            }
        }
         public   void  mouseExited(MouseEvent me){
            
        }
         public   void  mouseEntered(MouseEvent me){
            
        }
         public   void  mouseDragged(MouseEvent me){
             int  x = me.getX();
             int  y = me.getY();
             if (current == States.MOVE){
                startX += (x - tempX);
                startY += (y - tempY);
                endX += (x - tempX);
                endY += (y - tempY);
                tempX = x;
                tempY = y;
            } else   if (current == States.EAST || current == States.WEST){
                 if (currentX == START_X){
                    startX += (x - tempX);
                    tempX = x;
                } else {
                    endX += (x - tempX);
                    tempX = x;
                }
            } else   if (current == States.NORTH || current == States.SOUTH){
                 if (currentY == START_Y){
                    startY += (y - tempY);
                    tempY = y;
                } else {
                    endY += (y - tempY);
                    tempY = y;
                }
            } else   if (current == States.NORTH_EAST || current == States.NORTH_EAST ||
                    current == States.SOUTH_EAST || current == States.SOUTH_WEST){
                 if (currentY == START_Y){
                    startY += (y - tempY);
                    tempY = y;
                } else {
                    endY += (y - tempY);
                    tempY = y;
                }
                 if (currentX == START_X){
                    startX += (x - tempX);
                    tempX = x;
                } else {
                    endX += (x - tempX);
                    tempX = x;
                }
                
            } else {
                startX = tempX;
                startY = tempY;
                endX = me.getX();
                endY = me.getY();
            }
             this .repaint();
        }
         public   void  mousePressed(MouseEvent me){
            showTip = false ;
            tempX = me.getX();
            tempY = me.getY();
        }
         public   void  mouseReleased(MouseEvent me){
             if (me.isPopupTrigger()){
                 if (current == States.MOVE){
                    showTip = true ;
                    p = me.getPoint();
                    startX = 0 ;
                    startY = 0 ;
                    endX = 0 ;
                    endY = 0 ;
                    repaint();
                }  else {
                    jf.dispose();
                    updates();
                }
                
            }
        }
         public   void  mouseClicked(MouseEvent me){
             if (me.getClickCount() == 2 ){
                 // Rectangle rec=new Rectangle(startX,startY,Math.abs(endX-startX),Math.abs(endY-startY));
                Point p = me.getPoint();
                 if (select.contains(p)){
                     if (select.x + select.width < this .getWidth() && select.y + select.height < this .getHeight()){
                        get = bi.getSubimage(select.x,select.y,select.width,select.height);
                        jf.dispose();
                        updates();
                    } else {
                         int  wid = select.width,het = select.height;
                         if (select.x + select.width >= this .getWidth()){
                            wid = this .getWidth() - select.x;
                        }
                         if (select.y + select.height >= this .getHeight()){
                            het = this .getHeight() - select.y;
                        }
                        get = bi.getSubimage(select.x,select.y,wid,het);
                        jf.dispose();
                        updates();
                    }
                    
                }
            }
        }
    }
    
     public   static   void  main(String args[]){
        SwingUtilities.invokeLater( new  Runnable(){
             public   void  run(){
                 new  CaptureScreen();
            }
        });
    }
}
// 一些表示状态的枚举
enum  States{
    NORTH_WEST( new  Cursor(Cursor.NW_RESIZE_CURSOR)), // 表示西北角
    NORTH( new  Cursor(Cursor.N_RESIZE_CURSOR)),
    NORTH_EAST( new  Cursor(Cursor.NE_RESIZE_CURSOR)),
    EAST( new  Cursor(Cursor.E_RESIZE_CURSOR)),
    SOUTH_EAST( new  Cursor(Cursor.SE_RESIZE_CURSOR)),
    SOUTH( new  Cursor(Cursor.S_RESIZE_CURSOR)),
    SOUTH_WEST( new  Cursor(Cursor.SW_RESIZE_CURSOR)),
    WEST( new  Cursor(Cursor.W_RESIZE_CURSOR)),
    MOVE( new  Cursor(Cursor.MOVE_CURSOR)),
    DEFAULT( new  Cursor(Cursor.DEFAULT_CURSOR));
     private  Cursor cs;
    States(Cursor cs){
         this .cs = cs;
    }
     public  Cursor getCursor(){
         return  cs;
    }
}

尽管千里冰封
依然拥有晴空

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