Help need with 2 progress bars

AdRock · Apr 20th, 2007, 22:59

I need to make an applet that has 2 progress bars.

The top progress bar needs to move twice as fast as the bottom progress bar.

I have got the top progress bar to work but no matter what I try, I can't get the second progress bar to move slower than the first one. I can get them to move at the same time which is no good.

Does anyone know how I can do this? I did try using a nested loop but I think I messed it up. Any help would be very much appreciated.

I know this code isn't perfect but it's the only example that i was able to work from.

Code: Select all

 
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
public class Progress1 extends Applet implements Runnable
{   
 Thread runner;
 myCanvas ca = new myCanvas();
 Choice ch = new Choice();
 Label la;
 Button a;
 TextField tf;
 
 int xpos;
 int BarHeight = 30;
 int TopBarWidth = 2;
 int BottomBarWidth = 1;
 
 public void init() 
 {
  setLayout(new GridBagLayout());
        GridBagConstraints c = new GridBagConstraints();
  ch.addItem("IEEE 802.11a");
  ch.addItem("IEEE 802.11b");
  ch.addItem("IEEE 802.11g");
  ch.addItem("IEEE 802.11n");
  ch.addItem("IHomeRF");
  c.gridx = 0;
        c.gridy = 0;
        add(ch, c);
  
  la = new Label("Enter amount of data (Mbits) to be transferred");
  c.gridwidth = 2;
  c.gridx = 1;
  c.gridy = 0;
  add(la, c);
  
  tf = new TextField("",12);
  c.gridwidth = 2;
  c.gridx = 1;
  c.gridy = 2;
  add(tf, c);
 
  a = new Button("Transfer");
  c.gridx = 3;
  c.gridy = 2;
  add(a, c);
  
  ca.setBackground(Color.white);
  ca.resize(400,150);
  c.gridwidth = 4;
  c.gridx = 0;
  c.gridy = 3;
  add(ca,c);
  
  start();
 }
 
 public void start() 
 {
  if(runner==null)
  {
   runner= new Thread(this);
   runner.start();
  }
  repaint();
 }
 
 public void run() 
 {
 }
 
 public class myCanvas extends Canvas 
 {
  public void paint(Graphics g) 
  {
   g.setColor(Color.black);
   g.drawString("Theoretical Transfer Speed",0,25);
   g.drawString("Realistic Transfer Speed",0,85);
   
      g.setColor(Color.red);   
      g.drawRect (0, 30, 370, 30);
      g.fillRect (1, 31, 369, 29);
      g.drawRect (0, 90, 370, 30);
      g.fillRect (1, 91, 369, 29);
      
      for(xpos=1; xpos<=369; xpos+=1) 
      {
       g.setColor(Color.green);
       g.fillRect(xpos-1,31,BottomBarWidth,BarHeight);
       g.fillRect(xpos,31,BottomBarWidth,BarHeight);
       
       g.setColor(Color.black);
    g.drawString("Theoretical Transfer Speed",0,25);
       g.drawRect (0, 30, 370, 30);
       g.drawString("Realistic Transfer Speed",0,85);
       g.drawRect (0, 90, 370, 30); 
       
       try 
       {
        Thread.sleep(100);
       }
       catch (InterruptedException e)
       { 
       }     
      }   
      
  }
 }
}