clocktime.java

ClockApplet J2EE资源 Java 网络资源以及相关

//////////////////////////////////////////////////
//
//   Time Display Applet V1.00
//
//   KAC Website Design - http://www.kacweb.com
//
//   Created 4/4/97 by Kenny A. Chaffin
//
//   Last Updated 4/8/97 by Kenny A. Chaffin
//
/////////////////////////////////////////////////


// Standard Java Imports
import java.applet.*;
import java.awt.*;
import java.net.*;
import java.util.*;
import java.io.*;



public class ClockTime extends java.applet.Applet implements Runnable 
  {

    private volatile Thread clock;
    private String font_name, title, datestring, timestring;			// name of the font
    private int height, width, font_size;			// font size (points)
    private Font wordFont;
    private FontMetrics wordMetrics;
    private int textcolor, backcolor, bordercolor;
    private int stringx, stringy;
    private int delay;
		private Image off_image;
		private Graphics offg;
    TimeAndDateFormatter formattedTimeAndDate;
        
 public void init() 
    {
      String temp;
			timestring = "";
			Dimension appletSize = this.getSize();
			height = appletSize.height;
			width = appletSize.width;

			off_image = createImage(width, height);
			offg = off_image.getGraphics();

           						// get the name and size of the font
     temp = getParameter("delay");
     delay= (temp==null) ? 5000 : Integer.parseInt( temp );
     temp=getParameter("title");
     title = (temp==null) ? " " : temp;
     temp=getParameter("font");
     font_name= (temp==null) ? "TimesRoman" : temp;
     temp = getParameter("fontsize");
     font_size= (temp==null) ? 12 : Integer.parseInt( temp );

     						// initialise the font
     wordFont = new Font(font_name, Font.PLAIN, font_size);
     if (wordFont == null)
       wordFont = getFont();
     wordMetrics = getFontMetrics (wordFont);

    temp = getParameter("textcolor");
    textcolor = (temp==null) ? 0x000000 : Integer.parseInt(temp, 16);
    temp = getParameter("backcolor");
    backcolor= (temp==null) ? 0xffffff : Integer.parseInt(temp, 16);
    temp = getParameter("bordercolor");
    bordercolor = (temp==null) ? backcolor : Integer.parseInt(temp, 16);

 }
  public void start() 
     {
       clock = new Thread(this); 	// start the thread
       clock.start();	
     }
	
  public void stop() 
  {
      clock = null;
  }
    public void run() 
      {
			 Thread thisThread = Thread.currentThread();

      thisThread.setPriority(Thread.MIN_PRIORITY);	
      while(clock == thisThread) 
     	{
       	Date date = new Date();
       	formattedTimeAndDate = new TimeAndDateFormatter( date, title );
       	datestring = formattedTimeAndDate.dateToString();
       	timestring = formattedTimeAndDate.timeToString();
				timestring = datestring + ", " + timestring;          
       	repaint();
      	try {
					thisThread.sleep(delay);
     		} 
      	catch( InterruptedException e ) 
            {}
        }    
    }
  public void update (Graphics g) 
    {
      paint(g);
    }

  public synchronized void paint(Graphics g) 
    {
      offg.setFont(wordFont);			// set the font in the graphics context
      offg.setColor(new Color(backcolor));		// fill area with the background color
      offg.fillRect(0,0,width,height);
      offg.setColor(new Color(textcolor));
      stringy = (height - (wordMetrics.getHeight()-wordMetrics.getLeading()))/2 + (wordMetrics.getHeight()-wordMetrics.getLeading()-wordMetrics.getDescent());		 
      stringx = 1;
      offg.drawString (timestring, stringx, stringy);
      offg.setColor(new Color(bordercolor));
			g.drawImage(off_image, 0, 0, this);
    }
  public void paintApplet(Graphics g) 
    {				
	}


}