Robot.rar ~ 116KB
ScreenShot.java ~ 420B
package Robot_Caputer; import java.awt.AWTException; import java.awt.EventQueue; public class ScreenShot { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try{ ScreenShotWindow ssw=new ScreenShotWindow(); ssw.setVisible(true); }catch(AWTException e){ e.printStackTrace(); } } }); } } [文件] ScreenShotWindow.java ~ 5KB (13)
package Robot_Caputer; import images.*; import java.awt.AWTException; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Image; import java.awt.Rectangle; import java.awt.Robot; import java.awt.Toolkit; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionAdapter; import java.awt.image.BufferedImage; import java.awt.image.RescaleOp; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import javax.imageio.ImageIO; import javax.swing.JFileChooser; import javax.swing.JWindow; import javax.swing.filechooser.FileNameExtensionFilter; import javax.swing.filechooser.FileSystemView; //Jwindow 也是四大顶级组件之一，地位等同于JFrame，是一个无标题栏的窗口 public class ScreenShotWindow extends JWindow { /** * */ private static final long serialVersionUID = 1L; private int orgx,orgy,endx,endy; /**image的作用: * 1.获取整个屏幕的截图*/ private BufferedImage image=null; private BufferedImage tempImage=null; private BufferedImage saveImage=null; private ToolsWindow tools=null; public ScreenShotWindow() throws AWTException { //获取默认屏幕设备 GraphicsEnvironment environment=GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice screen=environment.getDefaultScreenDevice(); //获取屏幕尺寸 Dimension d=Toolkit.getDefaultToolkit().getScreenSize(); this.setBounds(0, 0, d.width, d.height); //获取屏幕截图 Robot robot=new Robot(screen); // Robot robot=new Robot(); // image=new BufferedImage((int)d.getWidth(),(int)d.getHeight(),BufferedImage.TYPE_4BYTE_ABGR); image=robot.createScreenCapture(new Rectangle(0, 0, d.width, d.height)); //设置鼠标敲击的时间监听 this.addMouseListener(new MouseAdapter() { //鼠标按下的事件监听 @Override public void mousePressed(MouseEvent e) { // orgx=e.getX(); orgy=e.getY(); if(tools!=null){ tools.setVisible(false); } } //鼠标抬起的事件监听 @Override public void mouseReleased(MouseEvent e) { if(tools==null){ tools=new ToolsWindow(ScreenShotWindow.this,e.getX(),e.getY()); }else{ tools.setLocation(e.getX(), e.getY()); } tools.setVisible(true); tools.toFront(); } }); //对于鼠标移动的监听 this.addMouseMotionListener(new MouseMotionAdapter() { //鼠标滑动的监听 //在滑动过程中会被反复调用 @Override public void mouseDragged(MouseEvent e) { endx=e.getX(); endy=e.getY(); //临时图像，用于缓冲屏幕区域放置屏幕闪烁 Image tempImage2=createImage(ScreenShotWindow.this.getWidth(),ScreenShotWindow.this.getHeight()); //用于绘图 Graphics g=tempImage2.getGraphics(); g.drawImage(tempImage, 0, 0,null); int x=Math.min(orgx, endx); int y=Math.min(orgy, endy); int width=Math.abs(endx-orgx)+1; int height=Math.abs(endy-orgy)+1; g.setColor(Color.RED); //保证图片矩形不被边框覆盖 g.drawRect(x-1, y-1, width+1, height+1); //getSubimage(int x,int y,int w,int h)用于返回规定位置中的矩形图像到BufferedImag对象中 saveImage=image.getSubimage(x, y, width, height); //用于画当前图像中的可用图像 g.drawImage(saveImage, x, y, null); ScreenShotWindow.this.getGraphics().drawImage(tempImage2, 0, 0,ScreenShotWindow.this); } }); } //重写了绘画的方法 @Override public void paint(Graphics g) { //new RescaleOp(float[] scaleFactors, float[] offsets, RenderingHints hints) //构造一个具有所希望的缩放因子和偏移量的新 RescaleOp。 //RescaleOp 是有关图像缩放的类 //RescaleOp.filter(BufferedImage src,BufferedImage dest) //用于对源图像src进行缩放 RescaleOp ro=new RescaleOp(0.8f,0, null); tempImage=ro.filter(image, null); g.drawImage(tempImage, 0, 0, this); } //保存图像到文件 public void saveImage() throws IOException{ JFileChooser jfc=new JFileChooser(); jfc.setDialogTitle("保存"); //文件过滤器，用户过滤可选择的文件 FileNameExtensionFilter filter=new FileNameExtensionFilter("JPG", "jpg"); jfc.setFileFilter(filter); //初始化一个默认文件(此文件会生成在桌面) SimpleDateFormat sdf=new SimpleDateFormat("yyyymmddHHmmss"); String filename=sdf.format(new Date()); File filePath=FileSystemView.getFileSystemView().getHomeDirectory(); File defaultFile=new File(filePath+File.separator+filename+".jpg"); jfc.setSelectedFile(defaultFile); int flag=jfc.showSaveDialog(this); if(flag==JFileChooser.APPROVE_OPTION){ File file=jfc.getSelectedFile(); String path=file.getPath(); //检查文件后缀，放置用户忘记输入后缀或输入不正确的后缀 if(!(path.endsWith(".jpg")||path.endsWith("JPG"))){ path+=".jpg"; } //写入文件 ImageIO.write(saveImage, "jpg", new File(path)); System.exit(0); } } } [文件] ToolsWindow.java ~ 1KB
package Robot_Caputer; import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.IOError; import java.io.IOException; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JToolBar; import javax.swing.JWindow; public class ToolsWindow extends JWindow{ /** * */ private static final long serialVersionUID = 1L; private ScreenShotWindow parent; public ToolsWindow(ScreenShotWindow parent,int x,int y) { this.parent=parent; this.init(); //将组件移到(x,y)的位置 this.setLocation(x, y); //调整窗口的大小来适应控件 this.pack(); this.setVisible(true); } private void init() { this.setLayout(new BorderLayout()); JToolBar toolBar=new JToolBar("Java截图"); //保存按钮 JButton saveButton=new JButton(new ImageIcon("src/images/SaveIcon.gif")); saveButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try{ parent.saveImage(); }catch(IOException ex1){ ex1.printStackTrace(); } } }); toolBar.add(saveButton); //关闭按钮 JButton closedButton=new JButton(new ImageIcon("src/images/closedIcon.gif")); closedButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { System.exit(0); } }); toolBar.add(closedButton); this.add(toolBar, BorderLayout.NORTH); } }
