usemycursor.java

JAVA2游戏程序设计源码 可以帮助初学者或者只想改改程序就能用的人

// 程序：使用自定义鼠标
// 范例文件：UseMyCursor.java
 
import java.awt.*;
import java.applet.*;
import java.awt.event.*;

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

   public void init()
   {
      addMouseListener(this);      
      addMouseMotionListener(this);   

      TK        = getToolkit();   


      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;   
      AppletHeight  = getSize().height; 

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

      try
      {
         MT.waitForAll();
      }
      catch(InterruptedException E){ } 


      try
      {
         myCursor1 = TK.createCustomCursor(MyCursor1,new Point(0,0),"hammer1"); 
         myCursor2 = TK.createCustomCursor(MyCursor2,new Point(0,0),"hammer2");   
      }
      catch(IndexOutOfBoundsException E){ }
  
      setCursor(myCursor1);           
   }

   public void update(Graphics g)  
   {
      paint(g);                  
   }

   public void paint(Graphics g)
   {

      g.drawImage(OffScreen,0,0,this);
   }


   public void mouseClicked(MouseEvent e)  
   {
 
      if((e.getModifiers() & InputEvent.BUTTON3_MASK) != 0)
      {

         drawOffScreen.setColor(getBackground());
         drawOffScreen.fillRect(0,0,AppletWidth,AppletHeight);
         drawOffScreen.setColor(getForeground());
         repaint();
      }  
   }

   public void mousePressed(MouseEvent e) 
   {
      setCursor(myCursor2);

      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();
      }
   }

   public void mouseExited(MouseEvent e){ } 
     
    public void mouseEntered(MouseEvent e){ } 
    
    public void mouseReleased(MouseEvent e)   
    {
       setCursor(myCursor1);
    }
 

    public void mouseMoved(MouseEvent e)   
    {
       drawX = e.getX();
       drawY = e.getY();
       showStatus("(" + e.getX() + "," + e.getY() + ")");
    }  
  
    public void mouseDragged(MouseEvent e){ }  
}