mainframe.java~2~

这是各类实用工具的源码100例

package jrasterdemo1;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.image.*;

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();
  private JButton jButton1 = new JButton();

  DrawPane drawPane = new DrawPane();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    jButton1.setFont(new java.awt.Font("Dialog", 0, 14));
    jButton1.setToolTipText("");
    jButton1.setText("倒转");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("JRasterDemo1");
    contentPane.add(jButton1, BorderLayout.SOUTH);

    contentPane.add(this.drawPane,BorderLayout.CENTER);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  class DrawPane extends JPanel{

    BufferedImage bimage,bimage1,bimage2;
    boolean turn=false;

    public DrawPane(){

      Image image = this.getToolkit().getImage(ClassLoader.getSystemResource("images/image.jpg"));

      MediaTracker mt = new MediaTracker(this);
      mt.addImage(image,1);

      try{
        mt.waitForAll();

      }catch(Exception err){
        err.printStackTrace();
      }

      if (image.getWidth(this) == -1){
        System.out.println("Could not get the image");
        System.exit(-1);
      }

      bimage1 = new BufferedImage(image.getWidth(this),image.getHeight(this),BufferedImage.TYPE_INT_ARGB);
      Graphics2D g2D = bimage1.createGraphics();
      g2D.drawImage(image,0,0,this);

      bimage = bimage1;
    }

    public void turnBufferedImage(){

      bimage2 = new BufferedImage(bimage1.getWidth(),bimage1.getHeight(),bimage1.getType());

      DataBuffer db1 = bimage1.getRaster().getDataBuffer();
      DataBuffer db2 = bimage2.getRaster().getDataBuffer();

      for (int i=db1.getSize()-1,j=0;i>=0;i--,j++){
        db2.setElem(j,db1.getElem(i));
      }

    }

    public void update(Graphics g){
      g.clearRect(0,0,this.getWidth(),this.getHeight());
      this.paintComponent(g);
    }

    public void paintComponent(Graphics g){
      super.paintComponent(g);
      Graphics2D g2d = (Graphics2D)g;
      g2d.drawImage(bimage,0,0,this);
    }
  }

  void jButton1_actionPerformed(ActionEvent e) {
      String text = ((JButton)e.getSource()).getText();
      if (text.equals("turn"))
  }
}