//cd c:\HPBasic\Toppage-sample3\MySwing\Slideshow100
//javac Slideshow1.java
//set CLASSPATH=.	
//appletviewer Slideshow1.html
//appletviewer Slideshow1.java

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

/*
    <applet code="Slideshow1.class" width=620 height=560></applet>
*/

public class Slideshow1 extends JApplet implements ActionListener {
   Container contentPane;
   SlidePanel1 slidepanel1;
   JButton startButton;
   JButton stopButton;
   AudioClip onceClip;

   public void init(){
        contentPane = getContentPane();
	slidepanel1 = new SlidePanel1();
        Dimension d =new Dimension(600,480);
        slidepanel1.setPreferredSize(d);
      
        JPanel minipanel= new JPanel();         
//        JPanel showpanel=new JPanel(); 

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

	contentPane.add(minipanel,BorderLayout.NORTH);
	contentPane.add(slidepanel1,BorderLayout.CENTER);
        minipanel.add(startButton);
        minipanel.add(stopButton);
        minipanel.setBackground(Color.green);
        slidepanel1.setBackground(Color.yellow);
    }

     public void actionPerformed(ActionEvent event) {
        Object source = event.getSource();
        if (source == startButton) {
           String midiFile = "coroptica.mid";
           onceClip = getAudioClip(getCodeBase(),midiFile);
           onceClip.play();     //AudioPlay
	   slidepanel1.init();
        } 
        if (source == stopButton) {
           onceClip.stop();    //AudioStop
           slidepanel1.stop();
        } 
     }


  class SlidePanel1 extends JPanel implements Runnable{
   Thread t;
   ImageIcon icon;
   int i = 1;
   int n = 7; //NUM_IMAGES
   String str ="コスモス";

  public void init(){
        // スレッドを起動する
        t = new Thread(this);
        t.start();
    }
 
     public void run() {
        try {
           Thread mythread = Thread.currentThread();         
           while(t == mythread) {
             i++;
             if (i > n) 
               i=1;
             update(); 
             Thread.sleep(3000);
           }
        }
        catch (Exception e) {
        }
     }

   public void update(){
             switch(i) {
               case 1: str="コスモス1";
                       break;
               case 2: str="コスモス2";
                       break;
               case 3: str="コスモス3";
                       break;
               case 4: str="コスモス4";
                       break;
               case 5: str="コスモス5";
                       break;
               case 6: str="コスモス6";
                       break;
               case 7: str="コスモス7";
                       break;
               default: str="不明";
             }
      repaint(); 
  }

   public void stop() {
        t=null;
    }

     public void paintComponent(Graphics g) {
       super.paintComponent(g);
        String imageName = "kosmos" + i + ".jpg";
  //      icon = new ImageIcon(imageName);
        URL baseURL = getCodeBase();
        icon = new ImageIcon(getURL(baseURL,imageName));
         g.drawImage(icon.getImage(),0,0,null);
	g.setFont(new Font("Serif", Font.BOLD, 30));
        g.setColor(Color.blue);
        g.drawString("" + str,220,510);
       System.out.println("paint i = " +  i + " imageName = " + imageName);
     }

     protected URL getURL(URL codeBase, String filename) {
        URL url = null;
        try {
            url = new URL(codeBase, filename);
        } catch (java.net.MalformedURLException e) {
            System.out.println("Couldn't create image: badly specified URL");
            return null;
        }
        return url;
    }
  }
}

/*
 失敗したSlide10と同じだが、別クラスだったSlidePanelを内部クラスとした。
エラーになっただった paintComponentに書いたgetCodeBase()がJAppletと関連づけられるようで、成功した。
*/