// 程序：加入聲音
// 范例文件：UseMyCursor2.java

import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class UseMyCursor2 extends Applet 
             implements MouseListener,MouseMotionListener
{
   int      AppletWidth,AppletHeight,drawX,drawY;
   Image        MyCursor1,MyCursor2;
   Cursor       myCursor1,myCursor2;
   Toolkit      TK;
   MediaTracker MT;
   Image    OffScreen;
   Graphics drawOffScreen;

   AudioClip    A1,A2,A3;

   public void init()
   {
      //A1是鐵錘敲下時的聲音,A2是鐵錘移動時的聲音,
//A3是鐵錘進入Applet時的聲音
      A1        = getAudioClip(getDocumentBase(),"Audio/audio1.au");
      A2        = getAudioClip(getDocumentBase(),"Audio/audio2.au");
      A3        = getAudioClip(getDocumentBase(),"Audio/audio3.au");

      addMouseListener(this);            //注冊事件處理方法
      addMouseMotionListener(this);   
			setBackground(Color.gray); 
      TK        = getToolkit();          //取得Toolkit

      //取得自訂光標圖像
      MyCursor1 = getImage(getDocumentBase(),"Images/hammer1.gif");
      MyCursor2 = getImage(getDocumentBase(),"Images/hammer2.gif");
      MT        = new MediaTracker(this); 
      MT.addImage(MyCursor1,0);
      MT.addImage(MyCursor2,0);

      AppletWidth   = getSize().width;   //取得Applet的高度
      AppletHeight  = getSize().height;  //取得Applet的寬度

      OffScreen     = createImage(AppletWidth,AppletHeight);
      drawOffScreen = OffScreen.getGraphics();

      try
      {
         MT.waitForAll();
      }
      catch(InterruptedException E){ }   //沒有進行異常處理    

      //建立新游標
      try
      {
         myCursor1 = TK.createCustomCursor(MyCursor1,new Point(0,0),"hammer1"); 
         myCursor2 = TK.createCustomCursor(MyCursor2,new Point(0,0),"hammer2");   
      }
      catch(IndexOutOfBoundsException E){ }
  
      setCursor(myCursor1);              //設定使用新光標
   }

   public void update(Graphics g)        //update()方法
   {
      paint(g);                          //只單純調用paint()方法
   }

   public void paint(Graphics g)
   {
      //將次畫面貼到主畫面中
      g.drawImage(OffScreen,0,0,this);
   }

   //=====實現MouseListener界面=======================================
   public void mouseExited(MouseEvent e)      //鼠標離開Component
   {
      A3.stop();    //停止播放
   }
   
   public void mouseClicked(MouseEvent e)     //鼠標按鍵被按下后放開
   {
      //如果是右鍵產生的mouseClicked事件的話
      if((e.getModifiers() & InputEvent.BUTTON3_MASK) != 0)
      {
         //清除次畫面
         drawOffScreen.setColor(getBackground());
         drawOffScreen.fillRect(0,0,AppletWidth,AppletHeight);
         drawOffScreen.setColor(getForeground());
         repaint();
      }  
   }
   
   public void mouseEntered(MouseEvent e)     //鼠標進入Component
   {
      A3.loop();    //循環播放
   }
   
   public void mousePressed(MouseEvent e)     //鼠標按鍵被按下
   {
      setCursor(myCursor2);
      //如果是左鍵產生的mousePressed事件的話
      if((e.getModifiers() & InputEvent.BUTTON1_MASK) != 0)
      {
         drawX = e.getX();
         drawY = e.getY();
         drawOffScreen.drawOval(drawX+20,drawY+30,1,1);
         drawOffScreen.drawOval(drawX+15,drawY+25,10,10);
         drawOffScreen.drawOval(drawX+10,drawY+20,20,20);
         repaint();
      }
      A1.play();    //播放
   }

   public void mouseReleased(MouseEvent e)    //鼠標按鍵放開
   {
      setCursor(myCursor1);
   }

   //=====實現MouseMotionListener界面=================================
   public void mouseMoved(MouseEvent e)       //鼠標移動時
   {
      A2.play();    //播放
      showStatus("(" + e.getX() + "," + e.getY() + ")");
   }  
 
   public void mouseDragged(MouseEvent e){ }  //鼠標拖曳時 
}