java类似qq的截图
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package screencapture;import java.awt.*;import java.awt.event.*;import javax.swing.*;import java.io.*;import javax.imageio.*;import java.awt.image.*;/** * @author jacky.zhu java截图代码 * */public class CaptureScreen extends JFrame implements ActionListener{ private JButton start,cancel,save; private BufferedImage get; /** Creates a new instance of CaptureScreen */ public CaptureScreen() { doStart(); } private void doStart(){ try{ 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(); jf.getContentPane().add(new Temp(jf,bi,di.width,di.height)); jf.setUndecorated(true); jf.setSize(di); jf.setVisible(true); jf.setAlwaysOnTop(true); }catch(Exception exe){ exe.printStackTrace(); } } private void doSave()throws NullPointerException{ try{ File file = new File("d:/123.jpg");//这里我写死了路径和类型jpg String about="jpg"; String ext=file.toString().toLowerCase(); System.out.println(ext); ImageIO.write(get,about,file); } catch(Exception exe){ exe.printStackTrace(); } } public void actionPerformed(ActionEvent ae){ if(ae.getSource()==start){ doStart(); } else if(ae.getSource()==cancel){ //System.exit(0); } else if(ae.getSource()==save){ doSave(); } }//代码太长我把一部分 分开.下面继续 public static void main(String args[]){ new CaptureScreen(); } //一个暂时类，用于显示当前的屏幕图像 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;//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 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); Image icon=Toolkit.getDefaultToolkit().createImage(this.getClass().getResource("icon.png")); cs=Toolkit.getDefaultToolkit().createCustomCursor(icon,new Point(0,0),"icon"); this.setCursor(cs); 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); } public void mouseMoved(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){ if(startX>endX){ startX+=(x-tempX); tempX=x; } else{ endX+=(x-tempX); tempX=x; } }else if(current==States.NORTH){ if(startY<endY){ startY+=(y-tempY); tempY=y; }else{ endY+=(y-tempY); tempY=y; } }else if(current==States.WEST){ if(startX<endX){ startX+=(x-tempX); tempX=x; } else{ endX+=(x-tempX); tempX=x; } }else if(current==States.SOUTH){ if(startY>endY){ startY+=(y-tempY); tempY=y; }else{ endY+=(y-tempY); tempY=y; } } else if(current==States.NORTH_EAST){ if(startX>endX){ startX+=(x-tempX); tempX=x; } else{ endX+=(x-tempX); tempX=x; } if(startY<endY){ startY+=(y-tempY); tempY=y; }else{ endY+=(y-tempY); tempY=y; } }else if(current==States.NORTH_WEST){ if(startX<endX){ startX+=(x-tempX); tempX=x; } else{ endX+=(x-tempX); tempX=x; } if(startY<endY){ startY+=(y-tempY); tempY=y; }else{ endY+=(y-tempY); tempY=y; } }else if(current==States.SOUTH_EAST){ if(startY>endY){ startY+=(y-tempY); tempY=y; }else{ endY+=(y-tempY); tempY=y; } if(startX>endX){ startX+=(x-tempX); tempX=x; } else{ endX+=(x-tempX); tempX=x; } }else if(current==States.SOUTH_WEST){ if(startY>endY){ startY+=(y-tempY); tempY=y; }else{ endY+=(y-tempY); tempY=y; } if(startX<endX){ 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){ tempX=me.getX(); tempY=me.getY(); } public void mouseReleased(MouseEvent me){ System.out.println("mouseReleased"); if(me.isPopupTrigger()){ if(current==States.MOVE){ startX=0; startY=0; endX=0; endY=0; repaint(); } else{ jf.dispose(); //doSave(); } } } 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(); //save.setEnabled(true); doSave(); }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(); //save.setEnabled(true); doSave(); } } } }}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; }}}?
在类的目录下有个icon.png图片?
转自：http://topic.csdn.net/u/20090122/16/727ef794-3494-4bcb-80ac-d482912fb32d.html