Jul 022000
 

You need Java to view this applet.

Soooo, this was inspired while waiting for a train that never came. The notice board constantly told me that the train was imminently arriving; though every minute that passed the due time clocked up by one minute. I think I waited for an hour, and the board still said the train was arriving in a minute!

import java.awt.*;
import java.applet.*;
import  java.util.Calendar;
import java.util.Date;
import java.text.*;

public  class AtRail extends Applet implements Runnable
{
private  String timeScheduled, timeDue, timeNow="", vMessage1="", vMessage2="";
private static String destination, destDetails;

private  SimpleDateFormat sdfA, sdfB;
private static Font fTime, fDDetail,  fDestination;
private Thread updateTime, drawGraphics;

private static int xWidth, yHeight;
private int xCounter,  yCounter;

private boolean scrolling = true;
private  Image i_vScroll, i_hScroll, i_time;
private Graphics g_vScroll,  g_hScroll, g_time;

private Dimension d_vScroll, d_hScroll,  d_time;

public void init(){
System.out.println("AtRail.class, V b1, 29/6/01 by AtPeace,  http://www.somedodgywebsite.com");
System.out.println("Email :  AtPeace@somedodgywebsite.com");

//Set backgreound
this.setBackground(Color.black);

//Pull Applet  dims & assign ints for dims
Rectangle rec=  this.getBounds();
yHeight = rec.height;
xWidth =  rec.width;
//      DEBUG System.out.println(xWidth+""+yHeight);

//pulled from Parmas, but not
destDetails =  "Calling at London Kings X only.";
destination = "Kings X  Only";

//Set Font for display
fTime = new  Font("CourierNew",Font.PLAIN,15);
fDDetail = new  Font("CourierNew",Font.ITALIC,15);
fDestination = new  Font("CourierNew",Font.BOLD,20);

//Pull font metrics  for dim of graphics display
FontMetrics fm_time =  getFontMetrics(fTime);

//Define dimenstions for use with  graphics contexts
d_time = new  Dimension(fm_time.stringWidth("88:88:88"),fm_time.getHeight());
d_vScroll = new Dimension(xWidth,yHeight-d_time.height);
d_hScroll = new Dimension(xWidth-d_time.width,d_time.height);

//       DEBUG System.out.println(d_time.toString());//56 17

//Set format for String display dates
sdfA = new  SimpleDateFormat ("hh:mm:ss");
sdfB = new SimpleDateFormat  ("hh:mm");

//Pull current time, add 3 mins & format  string for display.
//TODO replace addition of spaces with a  metric of font space.
Date timer = new Date();
long  timeinc = timer.getTime()+120000;
Date tempDue = new  Date(timeinc);
timeScheduled = sdfB.format(tempDue);
vMessage1 = destination+"   "+timeScheduled;

//Create Graphics context for off screen drawing, of the dimentioned  size
i_time = createImage(d_time.width,d_time.height);
i_vScroll = createImage(d_vScroll.width,d_vScroll.height);
i_hScroll = createImage(d_hScroll.width,d_hScroll.height);

g_time = i_time.getGraphics();
g_vScroll =  i_vScroll.getGraphics();
g_hScroll = i_hScroll.getGraphics();

//Create and start Threads
updateTime = new  Thread(this, "AtTime");
updateTime.start();
drawGraphics = new Thread (this, "AtDraw");
drawGraphics.start();
}

public void updateTime(){
//Thread for time monitor
do {
//Retrive time
Date currentTime = new Date();
Date dueTime = new  Date();

timeNow=sdfA.format(currentTime);

//Add 3 mins & hash time into long
long  timeDueHash = currentTime.getTime()+180000;
dueTime.setTime(timeDueHash);

//TODO with Font Metric  add pixel distance for additional sapce in use.
vMessage2="Due                 "+sdfB.format(dueTime);
try  {Thread.sleep(1000);}
catch (InterruptedException e){}
} while (true);
}

public void drawGraphics(){
//Thread for calc vertical scrolling message
xCounter =  xWidth + 10;
yCounter = yHeight;

Date timer = new  Date();
do {
//         paintOffScreen();
repaint();
try {Thread.sleep(20);}
catch  (InterruptedException e){}

xCounter--;

//Destination Details Stops
if(xCounter<-230)
xCounter = xWidth +10;

//Destination Station
if (yCounter < 27){
scrolling = false;
Date timer2 = new Date();
if (timer2.getTime()>timer.getTime()+5000){
if (yCounter < -3) {
scrolling = false;
if (timer2.getTime()>timer.getTime()+10000){
yCounter= yHeight;
timer = new  Date();
}
} else {scrolling =  true;yCounter--;}
}
} else {scrolling =  true;yCounter--;}
} while (true);
}

public  void paintOffScreen(){
repaint();
}

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

public  synchronized void update(Graphics g){
//Draw Time
g_time.setColor(Color.black);
g_time.fillRect(0,0,d_time.width,d_time.height);
g_time.setColor(Color.green);
g_time.setFont(fTime);
g_time.drawString(timeNow,0,14);
//Draw destDetails times
g_vScroll.setColor(Color.black);
g_vScroll.fillRect(0,0,d_vScroll.width,d_vScroll.height);
g_vScroll.setColor(Color.green);
g_vScroll.setFont(fDestination);
g_vScroll.drawString(vMessage2,5,yCounter+30);
g_vScroll.drawString(vMessage1,5,yCounter);
g_vScroll.drawString(vMessage2,5,yCounter-30);
//paint(g_vScroll);
//Draw destDetails detail
g_hScroll.setColor(Color.black);
g_hScroll.fillRect(0,0,d_hScroll.width,d_hScroll.height);
g_hScroll.setColor(Color.green);
g_hScroll.setFont(fDDetail);
g_hScroll.drawString(destDetails,xCounter,14);

g.drawImage(i_time,xWidth-d_time.width,yHeight-d_time.height,this);
g.drawImage(i_vScroll,0,0,this);
g.drawImage(i_hScroll,0,yHeight-d_hScroll.height,this);
}

public void run(){
//Kicks threads into action (Runable)
if (Thread.currentThread()==updateTime)
updateTime();
if (Thread.currentThread()==drawGraphics)
drawGraphics();
}

public String getAppletInfo() {
//nfo for applete
return "AtRail.java, V b1, 29/6/01 by  AtPeace, http://somedodgywebsite.com";
}

public void  destroy(){
updateTime.stop();
updateTime = null;
drawGraphics.stop();
drawGraphics=null;
}

}
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