showtitlethread.java.bak

来自「经典的java applet小程序下来看看说不定有启发哦」· BAK 代码 · 共 100 行

import java.awt.*;
import java.applet.*;
import java.util.*;
public class  showTitleThread extends Applet  {

 public Image offImage;
public Graphics offGraphics;
public Dimension offDimension;
String title,fill;
int delayTime;
int pos , blinkWidth;
int x=800;
Thread  thisThread;
Font myFont=new Font("TimesRoman",Font.BOLD,48);

public void init(){
title="Welcome you to  come here!";
 fill="";
delayTime=10;
pos=0;
blinkWidth=150;
}

public void start(){
if(thisThread==null)
{
thisThread=new mythread();
 
thisThread.start();
}
}

public void stop()
{
	thisThread=null;
 
        
        offImage=null;
        offGraphics=null;
     
}

class mythread extends Thread{

public void run()
{
	while(thisThread!=null)
	{
		repaint();
		try{
		Thread.sleep(30);
	}catch(InterruptedException e){ break;}
         }//while
}//run
}

public void update(Graphics g)
{
	Dimension d=getSize();
        if((offGraphics==null)||(d.width!=offDimension.width)||(d.height!=offDimension.height))
        {
            offDimension=d;
            offImage=createImage(d.width,d.height);
            offGraphics=offImage.getGraphics();
        }
        
        offGraphics.setColor(getBackground());
        offGraphics.fillRect(0,0,d.width,d.height);
        FontMetrics myFM=g.getFontMetrics(myFont);
	int height=myFM.getHeight();
	int top=myFM.getAscent();
	 offGraphics.setFont(myFont);
	 if(x>-500) 
	{
	x=(x-1)%getSize().width;
         }
        else
        { x=1000; }
        offGraphics.setColor(Color.red);
	offGraphics.drawString(title,x,top);
      
        
        
        g.drawImage(offImage, 0,0, this);
	paint(g);
}

public void paint(Graphics g)
{
	 
	  
if(offImage!=null)
        {
            g.drawImage(offImage, 0, 0, this);
        }	
        
}


}