//cd c:\HPBasic\Toppage-sample3\MySwing4
//set CLASSPATH=.
//javac slideshow\Slideshow.java

package slideshow;

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.*;

public class Slideshow extends JApplet implements ActionListener, Runnable {
   SlidePanel slidepanel;
   JButton startButton;
   JButton stopButton;
   AudioClip onceClip;
   Thread t;
   Image[] images;
   int height;
   int i = 0;

   public String slideName;
   public String midiFile; 
   public String[] str;
   public int n ; //NUM_IMAGES

   public void init(){
        Container contentPane = getContentPane();
	slidepanel = new SlidePanel();
        Dimension d = getSize();
        height = d.height;
      
        JPanel minipanel= new JPanel();         

        startButton = new JButton("Start");
        stopButton = new JButton("Stop");
        startButton.addActionListener(this);
        stopButton.addActionListener(this);

	contentPane.add(minipanel,BorderLayout.NORTH);
	contentPane.add(slidepanel,BorderLayout.CENTER);
        minipanel.add(startButton);
        minipanel.add(stopButton);
        minipanel.setBackground(Color.green);
        slidepanel.setBackground(Color.yellow);

        images = new Image[n];
        for (int j = 0; j < n; j++) {
            String imageName = slideName + j + ".jpg";
            try {
              loadImage(new URL(getDocumentBase(),imageName),j);
           //   images[j] = getImage(new URL(getDocumentBase(),imageName));
            } catch (Exception e) {}
        }
    }

    public void loadImage(URL url,int j) 
         throws InterruptedException {
            // thrown by MediaTracker.waitFor
       images[j] = getImage(url);
       MediaTracker tracker = new MediaTracker(this);
       tracker.addImage(images[j], 0);
       tracker.waitForID(0);
/*      int imageWidth = images[j].getWidth(null);
        int imageHeight = images[j].getHeight(null);
        resize(imageWidth, imageHeight);*/
   }

     public void actionPerformed(ActionEvent event) {
        Object source = event.getSource();
        if (source == startButton) {
           onceClip = getAudioClip(getCodeBase(),midiFile);
           onceClip.play();     //AudioPlay
        // スレッドを起動する
           t = new Thread(this);
           t.start();
        } 
        if (source == stopButton) {
           onceClip.stop();    //AudioStop
           stop();
        } 
     }

     public void run() {
        try {
           Thread mythread = Thread.currentThread();         
           while(t == mythread) {
             slidepanel.init(); 
             Thread.sleep(3000);
             i++;
             if (i == n) 
               i=0;
           }
        }
        catch (Exception e) {
        }
     }

   public void stop() {
        t=null;
    }

  class SlidePanel extends JPanel {
 
     public void init() {
          repaint();
     }

     public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.drawImage(images[i],50,40,null);
	g.setFont(new Font("Serif", Font.BOLD, 30));
        g.setColor(Color.blue);
        g.drawString(str[i],100,height-50);
     }
  }
}