今天稍微花了點時間實現了一個java的屏幕截圖程序，功能簡單，支持全屏截圖和選擇截圖
用JSmooth做了個.exe程序，直接運行就可以了，
附：
程序下載
http://www.aygfsteel.com/Files/jht/MyScreenSnap.zipJRE1.4版本的可執行程序
http://www.aygfsteel.com/Files/jht/MyScreenSnap_jre1.4.zip關鍵的有幾點
一、做一個透明效果的窗體
二、調用Robot類的捕獲屏幕方法
代碼比較粗糙，暫時就這樣。
代碼如下：
package?cn.heapstack.MyScreenSnap;
import?java.awt.AWTException;
import?java.awt.Color;
import?java.awt.Dimension;
import?java.awt.DisplayMode;
import?java.awt.FlowLayout;
import?java.awt.GraphicsDevice;
import?java.awt.GraphicsEnvironment;
import?java.awt.Rectangle;
import?java.awt.Robot;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.awt.image.BufferedImage;
import?java.io.File;
import?java.io.IOException;
import?javax.imageio.ImageIO;
import?javax.swing.JButton;
import?javax.swing.JFrame;
import?javax.swing.JPanel;
public?class?MenuFrame?
{
????
????private?JFrame?frame;
????private?TranslucentFrame?tframe;
????private?JPanel?panel;
????private?JButton?button1;
????private?JButton?button2;
????private?JButton?button3;
????private?FormListener?formListener;
????private?Robot?robot;
????
????public?static?????GraphicsEnvironment?graphenv?=?GraphicsEnvironment.getLocalGraphicsEnvironment?();
????public?static?????GraphicsDevice?[]?screens?=?graphenv.getScreenDevices?();????
????public?static?????DisplayMode?mode?=?screens?[0].getDisplayMode?();????
????
????public?MenuFrame()
????{
????????initComponents();
????????
????}
????
????public?void?initComponents()
????{
????????frame?=?new?JFrame("MyScreenSnap?Version:1.0?Author:jacky.jihao@gmail.com");
????????
????????tframe?=?new?TranslucentFrame();
????????panel?=?new?JPanel();
????????
????????try?{
????????????
????????????robot?=?new?Robot();
????????}?catch?(AWTException?e)?{
????????????e.printStackTrace();
????????}?
????????
????????button1?=?new?JButton("Capture?Full?Screen");
????????button2?=?new?JButton("Capture?Selected?Screen");
????????button3?=?new?JButton("Exit");
????????formListener?=?new?FormListener();
????????button1.addActionListener(formListener);????
????????button2.addActionListener(formListener);????
????????button3.addActionListener(formListener);????
????????
????????//fullScreenFrame.setVisible(false);
????????tframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
????????tframe.setUndecorated(true);
????????tframe.setAlwaysOnTop(true);
????????tframe.setSize(2000,2000);
????????
????????frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
????????
????????frame.setLayout(null);
????????Dimension?size?=?new?Dimension(500,80);
????????frame.setPreferredSize(size?);
????????frame.setSize(size);
????????frame.setLocation(300,300);
????????frame.setBackground(Color.black);
????????
????????panel.setLocation(0,?0);
????????panel.setSize(size);
????????panel.setPreferredSize(size);
????????panel.setLayout(new?FlowLayout());
????????
????????panel.setOpaque(false);
????????
????????panel.add(button1);
????????panel.add(button2);
????????panel.add(button3);
????????
????????
????????frame.add(panel);
????????
????????frame.pack();
????????
????????frame.show();
????????
????}
????class?FormListener?implements?ActionListener
????{
????????
????????public?void?actionPerformed(ActionEvent?e)?{
????????????if(e.getSource()?==?button1)
????????????{
????????????????System.out.println("Just?capture?the?screen?using?a?robot");
????????????????frame.hide();
????????????????Rectangle?bounds?=?new?Rectangle?(0,?0,?mode.getWidth?(),?mode.getHeight?());????
????????????????
????????????????BufferedImage?bimg?=?robot.createScreenCapture(bounds);
????????????????????????????????
????????????????String?fileName?=?String.valueOf(System.currentTimeMillis())+".png";
????????????????File?outputFile?=?new?File(fileName);
????????????????try?
????????????????{
????????????????????ImageIO.write(bimg,?"png",?outputFile);
????????????????}?
????????????????catch?(IOException?e1)?
????????????????{
????????????????????e1.printStackTrace();
????????????????}
????????????????frame.show();
????????????????System.out.println("File?save?as?"+fileName);
????????????????
????????????}
????????????else?if(e.getSource()?==?button2)
????????????{
????????????????System.out.println("Create?a?full?screen?frame");
????????????????if(!tframe.isShowing())
????????????????{
????????????????????frame.hide();
????????????????????tframe.updateBackground();
????????????????????tframe.show();
????????????????????frame.show();
????????????????????frame.toBack();
????????????????}
????????????????else
????????????????????tframe.show();
????????????????
????????????}
????????????else?if(e.getSource()?==?button3)
????????????{
????????????????System.exit(0);
????????????}
????????????
????????}
????????
????}
????
????public?static?void?main(String[]?args)?{
????????new?MenuFrame();
????}
}
package?cn.heapstack.MyScreenSnap;
import?java.awt.AWTException;
import?java.awt.Color;
import?java.awt.Dimension;
import?java.awt.Graphics;
import?java.awt.Point;
import?java.awt.Rectangle;
import?java.awt.Robot;
import?java.awt.Toolkit;
import?java.awt.event.ComponentEvent;
import?java.awt.event.ComponentListener;
import?java.awt.event.MouseEvent;
import?java.awt.event.MouseListener;
import?java.awt.event.MouseMotionListener;
import?java.awt.event.WindowEvent;
import?java.awt.event.WindowFocusListener;
import?java.awt.image.BufferedImage;
import?java.awt.image.ImageFilter;
import?java.io.File;
import?java.io.FileFilter;
import?java.io.IOException;
import?java.util.Iterator;
import?javax.imageio.IIOImage;
import?javax.imageio.ImageIO;
import?javax.imageio.ImageWriteParam;
import?javax.imageio.ImageWriter;
import?javax.imageio.stream.ImageOutputStream;
import?javax.swing.ImageIcon;
import?javax.swing.JFileChooser;
import?javax.swing.JFrame;
import?javax.swing.JOptionPane;
public?class?TranslucentFrame?extends?JFrame?implements?ComponentListener,
????????WindowFocusListener,?MouseListener,?MouseMotionListener?{
????private?boolean?flag_prepare?=?true;
????private?BufferedImage?background;
????private?Robot?robot;
????private?Dimension?size;
????private?Point?startPoint;
????private?Point?lastPoint;
????private?int?width?=?0;
????private?int?w?=?0;
????private?int?h?=?0;
????private?int?height?=?0;
????public?TranslucentFrame()?{
????????init();
????}
????private?void?init()?{
????????try?{
????????????robot?=?new?Robot();
????????????size?=?Toolkit.getDefaultToolkit().getScreenSize();
????????}?catch?(AWTException?e)?{
????????????e.printStackTrace();
????????}
????????startPoint?=?new?Point();
????????lastPoint?=?new?Point();
????????this.addWindowFocusListener(this);
????????this.addComponentListener(this);
????????this.addMouseListener(this);
????????this.addMouseMotionListener(this);
????????this.updateBackground();
????}
????public?void?updateBackground()?{
????????background?=?robot.createScreenCapture(new?Rectangle(0,?0,?(int)?size
????????????????.getWidth(),?(int)?size.getHeight()));
????}
????public?void?refresh()?{
????????this.repaint();
????}
????public?void?repaint()?{
????????Graphics?g?=?this.getGraphics();
????????g.setColor(Color.red);
????????w?=?lastPoint.x?-?startPoint.x;
????????h?=?lastPoint.y?-?startPoint.y;
????????width?=?Math.abs(w);
????????height?=?Math.abs(h);
????????//?don't?need?to?clear?Rect?now,?just?paint?the?background,?it?feels
????????//?good
????????//?g.clearRect(startPoint.x,?startPoint.y,?width,?height);
????????this.paintComponents(g);
????????if?(!this.flag_prepare)?{
????????????if?(((w)?<?0)?&&?((h)?<?0))?{
????????????????g.drawRect(lastPoint.x,?lastPoint.y,?width,?height);
????????????}?else?if?(((w)?>?0)?&&?((h)?<?0))?{
????????????????g.drawRect(startPoint.x,?lastPoint.y,?width,?height);
????????????}?else?if?(((w)?<?0)?&&?((h)?>?0))?{
????????????????g.drawRect(lastPoint.x,?startPoint.y,?width,?height);
????????????}?else?if?(((w)?>?0)?&&?((h)?>?0))?{
????????????????g.drawRect(startPoint.x,?startPoint.y,?width,?height);
????????????}
????????}?else?{
????????????g.drawLine(0,?lastPoint.y,?size.width,?lastPoint.y);
????????????g.drawLine(lastPoint.x,?0,?lastPoint.x,?size.height);
????????}
????}
????public?void?paintComponents(Graphics?g)?{
????????Point?pos?=?this.getLocationOnScreen();
????????Point?offset?=?new?Point(-pos.x,?-pos.y);
????????g.drawImage(background,?offset.x,?offset.y,?null);
????}
????private?static?final?long?serialVersionUID?=?3690836343560995785L;
????public?static?void?main(String[]?args)?{
????????TranslucentFrame?frame?=?new?TranslucentFrame();
????????frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
????????frame.setUndecorated(true);
????????frame.setAlwaysOnTop(true);
????????frame.setSize(2000,?2000);
????????frame.show();
????}
????public?void?componentHidden(ComponentEvent?e)?{
????}
????public?void?componentMoved(ComponentEvent?e)?{
????????this.refresh();
????}
????public?void?componentResized(ComponentEvent?e)?{
????}
????public?void?componentShown(ComponentEvent?e)?{
????????this.refresh();
????}
????public?void?windowGainedFocus(WindowEvent?e)?{
????????this.refresh();
????}
????public?void?windowLostFocus(WindowEvent?e)?{
????}
????public?void?mouseMoved(MouseEvent?e)?{
????????//?System.out.println(e.getX()?+?":"?+?e.getY());
????????this.lastPoint.x?=?e.getX();
????????this.lastPoint.y?=?e.getY();
????????repaint();
????}
????public?void?mousePressed(MouseEvent?e)?{
????????System.out.println("Mouse?pressed?,?set?the?start?point,x:"?+?e.getX()
????????????????+?"?y:"?+?e.getY());
????????if?(e.getButton()?==?MouseEvent.BUTTON3)?{
????????????System.out.println("Get?right?mouse");
????????????this.hide();
????????}?else?{
????????????this.flag_prepare?=?false;
????????????this.startPoint.x?=?e.getX();
????????????this.startPoint.y?=?e.getY();
????????}
????}
????public?void?mouseReleased(MouseEvent?e)?{
????????System.out.println("Mouse?released?,?set?the?last?point,x:"?+?e.getX()
????????????????+?"?y:"?+?e.getY());
????????this.flag_prepare?=?true;
????????//?save?the?picture
????????if?(e.getButton()?==?MouseEvent.BUTTON1)?{
????????????
????????????BufferedImage?bimg?=?null;
????????????if?(((w)?<?0)?&&?((h)?<?0))?{
????????????????//g.drawRect(lastPoint.x,?lastPoint.y,?width,?height);
????????????????bimg?=?robot.createScreenCapture(new?Rectangle(lastPoint.x+1,?lastPoint.y+1,?width-1,?height-1));
????????????}?else?if?(((w)?>?0)?&&?((h)?<?0))?{
????????????????//g.drawRect(startPoint.x,?lastPoint.y,?width,?height);
????????????????bimg?=?robot.createScreenCapture(new?Rectangle(startPoint.x+1,?lastPoint.y+1,?width-1,?height-1));
????????????}?else?if?(((w)?<?0)?&&?((h)?>?0))?{
????????????????//g.drawRect(lastPoint.x,?startPoint.y,?width,?height);
????????????????bimg?=?robot.createScreenCapture(new?Rectangle(lastPoint.x+1,?startPoint.y+1,?width-1,?height-1));
????????????}?else?if?(((w)?>?0)?&&?((h)?>?0))?{
????????????????//g.drawRect(startPoint.x,?startPoint.y,?width,?height);
????????????????bimg?=?robot.createScreenCapture(new?Rectangle(startPoint.x+1,?startPoint.y+1,?width-1,?height-1));
????????????}
????????????
????????????
????????????JFileChooser?fcSave?=?new?JFileChooser();
????????????fcSave.setCurrentDirectory(new?File(System.getProperty("user.dir")));
????????????fcSave.setSelectedFile(null);
????????????if?(fcSave.showSaveDialog(this)?!=?JFileChooser.APPROVE_OPTION)
????????????????return;
????????????File?file?=?fcSave.getSelectedFile();
????????????String?path?=?file.getAbsolutePath().toLowerCase();
????????????if?(!path.endsWith(".png"))
????????????????file?=?new?File(path?+=?".png");
????????????
????????????
????????????try?{
????????????????ImageIO.write(bimg,?"png",?file);
????????????}?catch?(IOException?e1)?{
????????????????e1.printStackTrace();
????????????}
????????}
????????if?(this.isShowing())
????????????repaint();
????}
????public?void?mouseClicked(MouseEvent?e)?{
????}
????public?void?mouseEntered(MouseEvent?e)?{
????}
????public?void?mouseExited(MouseEvent?e)?{
????}
????public?void?mouseDragged(MouseEvent?e)?{
????????this.lastPoint.x?=?e.getX();
????????this.lastPoint.y?=?e.getY();
????????repaint();
????}
}
posted on 2007-03-29 19:19
jht 閱讀(1688)
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