demoimage.java

基于netbeans的java桌面应用程序合集

/*
 * DemoImage.java
 *
 * Created on 2007年8月5日, 下午10:29
 */

package org.Adam;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import javax.swing.ImageIcon;
import javax.swing.JFileChooser;
/**
 *
 * @author  Administrator
 */
public class DemoImage extends javax.swing.JFrame {
    
    /** Creates new form DemoImage */
    public DemoImage() {
        initComponents();
        this.setLocationRelativeTo(this);
    }
    private Image createImage() {
        try {//截图代码开始
            Image tempLocalImage=null;
            Robot robot=new Robot();
            Dimension dimension= Toolkit.getDefaultToolkit().getScreenSize();
            Rectangle scrRect=new Rectangle(0,0,dimension.width,dimension.height);
            tempLocalImage=robot.createScreenCapture(scrRect);
             //截图代码结束
             return tempLocalImage;
        } catch (AWTException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jScrollPaneGlobal = new javax.swing.JScrollPane();
        jLabelShowIcon = new javax.swing.JLabel();
        jMenuBarAll = new javax.swing.JMenuBar();
        jMenuAction = new javax.swing.JMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        jMenuItem2 = new javax.swing.JMenuItem();
        jMenuItem3 = new javax.swing.JMenuItem();
        jMenuItem4 = new javax.swing.JMenuItem();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jScrollPaneGlobal.setViewportView(jLabelShowIcon);

        jMenuAction.setText("\u64cd\u4f5c");
        jMenuItem1.setText("\u5f00\u59cb\u622a\u56fe");
        jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
            }
        });

        jMenuAction.add(jMenuItem1);

        jMenuItem2.setText("\u6587\u4ef6\u53e6\u5b58\u4e3a");
        jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem2ActionPerformed(evt);
            }
        });

        jMenuAction.add(jMenuItem2);

        jMenuItem3.setText("\u6e05\u7a7a\u5185\u5bb9");
        jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem3ActionPerformed(evt);
            }
        });

        jMenuAction.add(jMenuItem3);

        jMenuItem4.setText("\u9000\u51fa");
        jMenuItem4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem4ActionPerformed(evt);
            }
        });

        jMenuAction.add(jMenuItem4);

        jMenuBarAll.add(jMenuAction);

        setJMenuBar(jMenuBarAll);

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jScrollPaneGlobal, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(jScrollPaneGlobal, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 398, Short.MAX_VALUE)
                .addContainerGap())
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem4ActionPerformed
// TODO 将在此处添加您的处理代码：
        System.exit(0);
    }//GEN-LAST:event_jMenuItem4ActionPerformed

    private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem3ActionPerformed
// TODO 将在此处添加您的处理代码：
        this.jLabelShowIcon.setIcon(null);
        this.jMenuItem2.setEnabled(false);
        this.jMenuItem3.setEnabled(false);
        this.jMenuItem1.setEnabled(true);
    }//GEN-LAST:event_jMenuItem3ActionPerformed

    private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem2ActionPerformed
// TODO 将在此处添加您的处理代码：
         this.saveImage();
    }//GEN-LAST:event_jMenuItem2ActionPerformed

    private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem1ActionPerformed
// TODO 将在此处添加您的处理代码：
        jLabelShowIcon.setIcon(new ImageIcon(tempImage=this.createImage()));
       this.jMenuItem2.setEnabled(true);
       this.jMenuItem3.setEnabled(true);
       this.jMenuItem1.setEnabled(false);
    }//GEN-LAST:event_jMenuItem1ActionPerformed
    public void saveImage()
    {
         try
	{       
         int saved=fileChooser.showSaveDialog(this);
         if(saved==JFileChooser.APPROVE_OPTION)
         {
             //获取要保存
             File saveFileName=fileChooser.getSelectedFile();
             //获取要保存文件的名字
             String fileName=new String(saveFileName.getPath()+".jpg");
             //1.首先创建一个输出流
             FileOutputStream fileOutPut=new FileOutputStream(fileName);
            //2.然后把输出流用JPEG编码器进行包裹，其实就是把输出流连接到编码器
            encoder=JPEGCodec.createJPEGEncoder(fileOutPut);
            //把BufferedImage对象进行编码
            encoder.encode((BufferedImage) tempImage);
            fileOutPut.flush();
	    fileOutPut.close();
            }
         }		 
	catch(Exception ea)
	{
	     ea.printStackTrace();
	}         
    }
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new DemoImage().setVisible(true);
            }
        });
    }
    /*
    private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemExitActionPerformed
// TODO add your handling code here:
       
    }//GEN-LAST:event_jMenuItemExitActionPerformed
private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemNoIconActionPerformed
// TODO add your handling code here:
       
    }//GEN-LAST:event_jMenuItemNoIconActionPerformed
private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemSaveAsActionPerformed
// TODO add your handling code here:
          
    }//GEN-LAST:event_jMenuItemSaveAsActionPerformed
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemCaptureActionPerformed
// TODO add your handling code here:       
  
    }//GEN-LAST:event_jMenuItemCaptureActionPerformed
   */
     private Image tempImage;
private JPEGImageEncoder encoder;
private JFileChooser fileChooser=new JFileChooser();
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JLabel jLabelShowIcon;
    private javax.swing.JMenu jMenuAction;
    private javax.swing.JMenuBar jMenuBarAll;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JMenuItem jMenuItem2;
    private javax.swing.JMenuItem jMenuItem3;
    private javax.swing.JMenuItem jMenuItem4;
    private javax.swing.JScrollPane jScrollPaneGlobal;
    // 变量声明结束//GEN-END:variables
    
}