dgclock.java

一个用JAVA编写的数字时钟源码

          }

        int r=(colorval >> 16) & 0xff;
        int g=(colorval >> 8) & 0xff;
        int b=(colorval & 0xff);

        newcolor=new Color(r,g,b);
        colorCache.put(lowername,newcolor);  
      
        return (newcolor);
    }

    public void start()
    {
        if (timer == null)
        {
            timer=new Thread(this, "Dgclock");
            timer.start();
        }
    }

    public void run()
    {

        while (timer != null)
        {
            try
            {
               timer.sleep(1000);
            }catch (InterruptedException e)
             {
                break;
             }
            repaint();
        }
        timer=null;
    }
    
    public void paintApplet()
    {
        int
            i,
            j,
            k,
            x;

        Date
            now=new Date();

        int
            hour,
            minute,
            second;

        String
            hr,
            min,
            sec,
            today;

        Graphics
            gc;

        if (TimeDiff != 0L)
        {
            now.setTime(now.getTime()+TimeDiff);
        }
        hr=formatDate(TimeFormat,now);
        min=formatDate("%M",now);
        sec=formatDate("%S",now);

        if (ShowDate == true)
        {
            today=formatDate("%d",now);
        }
        else
            today="";


        if (tracker.statusID(0,true) == MediaTracker.COMPLETE)
        {

            //if (offset == 4)
            if (use_frame == true)
            {
                gc=buf_image.getGraphics();
                //draw the frame
                gc.clipRect(0,0,base_width,base_height);
                gc.drawImage(big_image,0,0,this);
            }

            //draw the hour digit images
            for (i=0; i < hr.length(); i++)
            {
                gc=buf_image.getGraphics();
                x=offset+(i*bdigit_width);
                gc.clipRect(x,offset,15,20);
                x=x-100-(hr.charAt(i)-'0')*bdigit_width;
                gc.drawImage(big_image,x,offset,null);
            }

            // draw the colon image
            gc=buf_image.getGraphics();
            x=offset+i*bdigit_width;
            gc.clipRect(x,offset,bdigit_width,bdigit_height);
            x=x-250;
            gc.drawImage(big_image,x,offset,null);
            i++;

            //draw the minute images
            for (j=0; j < min.length(); j++)
            {
                gc=buf_image.getGraphics();
                x=offset+(i*bdigit_width); 
                gc.clipRect(x,offset,15,20);
                x=x-100-(min.charAt(j)-'0')*bdigit_width;
                gc.drawImage(big_image,x,offset,null);
                i++;
            }

            // draw the second images
            for (j=0; j < sec.length(); j++)
            {
                gc=buf_image.getGraphics();
                x=offset+(i*bdigit_width)+(j*sdigit_width);
                gc.clipRect(x,offset,sdigit_width,sdigit_height);
                x=x-100-(sec.charAt(j)-'0')*sdigit_width;
                gc.drawImage(big_image,x,offset-bdigit_height,null);
            }

            if (ShowDate == true)
            {
                for(k=0; k < today.length(); k++)
                {
                    gc=buf_image.getGraphics();
                    x=offset+(i*bdigit_width)+(k*sdigit_width);
                    gc.clipRect(x,offset+sdigit_height+1,
                        sdigit_width,sdigit_height);
                    x=x-100-(today.charAt(k)-'0')*sdigit_width;
                    gc.drawImage(big_image,x,
                        offset+sdigit_height-bdigit_height,null);
                }
            }
        }
    }

    public void update(Graphics g)
    {
        if (tracker.statusID(0,true) == MediaTracker.COMPLETE)
        {
            if (buf_image != null)
            {
                if (use_frame == false)
                {
                    Graphics gc=buf_image.getGraphics();
                    gc.setColor(bg_color);
                    gc.fillRect(0,0,base_width,base_height);
                }
                paintApplet();
                g.drawImage(buf_image,0,0,this);
            }
            else
            {
                g.clearRect(0,0,base_width,base_height);
            }
        }
        else
        {
            g.drawString("Loading..",10,15);
        }
    }
// Left Pad a number
// taken from Clock2 by Per Reedtz Thomsen/Rachel Gollub
private String padElement(int expr, char padChar)
{
  String result = "";
  // I'm just padding 2 digit numbers
  if (expr < 10) result = result.concat(String.valueOf(padChar));
  result = result.concat(String.valueOf(expr));
  return(result);  
}

// Format a date according to the formatting string.
// taken from Clock2 by Per Reedtz Thomsen/Rachel Gollub
private String formatDate(String fmt, Date d)
{
  String formattedDate = "";
      
  // Retrieve the specific date information
  int hour = d.getHours();
  int minute = d.getMinutes();
  int second = d.getSeconds();
  int monthDay = d.getDate();
        
  int US_Hour = hour < 13 ? hour : hour - 12;
      
  // Loop through the format string
  for(int i = 0; i < fmt.length(); i++)
  {
    if (fmt.charAt(i) == '%') // We've hit a formatting command...
    {
      i++; // Move past the '%' sign
      // Figure out the format.
      switch (fmt.charAt(i))
      {
      case 'H': // Hour -- 00 to 23
        formattedDate = formattedDate.concat(padElement(hour, '0'));
        break;
      case 'I': // Hour -- 01 to 12
        formattedDate = formattedDate.concat(padElement(US_Hour, '0'));
        //formattedDate=formattedDate.concat(String.valueOf(US_Hour));
        break;
      case 'M': // Minutes -- 00 to 59
        formattedDate = formattedDate.concat(padElement(minute, '0'));
        break;
      case 'd': // 2 digit month number
        formattedDate = formattedDate.concat(padElement(monthDay, '0'));
        break;
      case 'S': // Second -- 00 to 61 (leap seconds)
        formattedDate = formattedDate.concat(padElement(second, '0'));
        break;
      default:
        formattedDate = formattedDate.concat("??");
        break;
      }
    }
    else // A regular character
    {
      formattedDate = formattedDate.concat(String.valueOf(fmt.charAt(i)));
    }
  } // end for

  return(formattedDate);
}

    public void stop()
    {
        if (timer != null)
        {
           timer.stop();
           timer=null;
        }
    }


    public boolean handleEvent(Event evt)
    {
        switch(evt.id)
        {
            case Event.MOUSE_DOWN:
            {
                if (suspended)
                {
                    timer.resume();
                }
                else
                {
                    //Print ("Suspending..");
                    timer.suspend();
                }
                suspended = !suspended;
                break;
            }
            
            case Event.MOUSE_MOVE:
            {
                if (tracker.statusID(0,true) != MediaTracker.COMPLETE)
                {
                    showStatus("Loading image...please wait!");
                }
                else
                {
                    if (suspended == false)
                    {
                        if (ShowStatus == true)
                            showStatus("Dgclock 2.3 by [e-mail]");
                        else
                        {
                            String tz=getParameter("TZ");
                            if (tz != null)
                                showStatus(tz);
                            else
                                showStatus("your time");
                        }
                    }
                }
                break;
            }
        }
        return true;
    }

    /*
    public void Print(String str)
    {
        System.out.println(str);
    }
    */

}

// change a color of the image
class ColorFilter extends RGBImageFilter
{
    Color
        fgc,
        bgc;

    public ColorFilter(Color fg,Color bg)
    {
        fgc=fg;
        bgc=bg;
        canFilterIndexColorModel=true;
    }

    public int filterRGB(int x,int y,int rgb)
    {
            


        int r=(rgb >> 16) & 0xff;
        int g=(rgb >> 8) & 0xff;
        int b=(rgb >> 0) & 0xff;

        int fg_r=fgc.getRed();
        int fg_g=fgc.getGreen();
        int fg_b=fgc.getBlue();

        int bg_r=bgc.getRed();
        int bg_g=bgc.getGreen();
        int bg_b=bgc.getBlue();

        //System.out.println("bg r,g,b=" + bg_r + "," + bg_g + "," + bg_b);

        //change foreground
        if ((r == 0) && (g == 255) && (b == 255))
        {
            r=fg_r;
            g=fg_g;
            b=fg_b;
            if ((r == 0) && (g == 0) && (b ==0))
            {
                r=g=b=1;
            }
            //System.out.println("fg r,g,b=" + r + "," + g + "," + b);
        }

        //change background
        if ((r == 0) && (g == 0) && (b == 0))
        {
            r=bg_r;
            g=bg_g;
            b=bg_b;
        }

        return (rgb & 0xff000000) | (r << 16) | (g << 8) | (b << 0);
    }

}