DEF_COMPONENTNAME
Clock
DEF_SUPERCLASS
Applet
DEF_SUPERCOMPONENT

DEF_PACKAGE
plugins
time
DEF_ENDLIST
DEF_SUBCOMPONENTLIST
DEF_ENDLIST
DEF_SUBCOMPONENTCLASSLIST
DEF_ENDLIST
DEF_CATEGORY
Time
DEF_BITMAP
clockm.bmp
DEF_THUMBNAIL_UP
clock.bmp
DEF_THUMBNAIL_DOWN
2-clock.bmp
DEF_VISUAL
DEF_TOOL
DEF_IMPORTS
java.util.*
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DEF_REQUIRES
DEF_ENDLIST
DEF_IMPLEMENTS
Runnable
DEF_ENDLIST
DEF_DECLARATION
// A class that produces a clock .
// author: Rachel Gollub, 1995
// modified 96/04/24 Jim Hagen : use getBackground()
// modified 96/05/29 Rachel Gollub : add garbage collecting
// revised 6/26/96 by Tony Hartzler
// Time!
//  Variable Declarations

  Thread timer = null;
  int lastxs=0, lastys=0, lastxm=0, lastym=0, lastxh=0, lastyh=0;
  Date dummy = new Date();
  String lastdate = dummy.toLocaleString();
  Font F = new Font("TimesRoman", Font.PLAIN, 14);
  Date dat = null;
DEF_ENDLIST
DEF_METHOD
public void init() {
  start();
}
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DEF_METHOD
void initialize() {
  int x,y;
  // resize(300,300);              // Set clock window size
  start();
}
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DEF_METHOD
public void plotpoints(int x0, int y0, int x, int y, Graphics g) {
// Plotpoints allows calculation to only cover 45 degrees of the circle,
// and then mirror

  g.drawLine(x0+x,y0+y,x0+x,y0+y);
  g.drawLine(x0+y,y0+x,x0+y,y0+x);
  g.drawLine(x0+y,y0-x,x0+y,y0-x);
  g.drawLine(x0+x,y0-y,x0+x,y0-y);
  g.drawLine(x0-x,y0-y,x0-x,y0-y);
  g.drawLine(x0-y,y0-x,x0-y,y0-x);
  g.drawLine(x0-y,y0+x,x0-y,y0+x);
  g.drawLine(x0-x,y0+y,x0-x,y0+y);
}
DEF_ENDLIST
DEF_METHOD
public void circle(int x0, int y0, int r, Graphics g) {
  // Circle is just Bresenham's algorithm for a scan converted circle

  int x,y;
  float d;

  x=0;
  y=r;
  d=5/4-r;
  plotpoints(x0,y0,x,y,g);

  while (y>x){
    if (d<0) {
      d=d+2*x+3;
      x++;
    }
    else {
      d=d+2*(x-y)+5;
      x++;
      y--;
    }
    plotpoints(x0,y0,x,y,g);
  }
}
DEF_ENDLIST
DEF_METHOD
public void paint(Graphics g) {
  // Paint is the main part of the program

  int xh, yh, xm, ym, xs, ys, s, m, h, xcenter, ycenter;
  String today;

  dat = new Date();
  s = dat.getSeconds();
  m = dat.getMinutes();
  h = dat.getHours();
  today = dat.toLocaleString();
  xcenter=80;
  ycenter=55;
  
  // a= s* pi/2 - pi/2 (to switch 0,0 from 3:00 to 12:00)
  // x = r(cos a) + xcenter, y = r(sin a) + ycenter
  
  xs = (int)(Math.cos(s * 3.14f/30 - 3.14f/2) * 45 + xcenter);
  ys = (int)(Math.sin(s * 3.14f/30 - 3.14f/2) * 45 + ycenter);
  xm = (int)(Math.cos(m * 3.14f/30 - 3.14f/2) * 40 + xcenter);
  ym = (int)(Math.sin(m * 3.14f/30 - 3.14f/2) * 40 + ycenter);
  xh = (int)(Math.cos((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 30 + xcenter);
  yh = (int)(Math.sin((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 30 + ycenter);
  
  // Draw the circle and numbers
  
  g.setFont(F);
  g.setColor(Color.blue);
  circle(xcenter,ycenter,50,g);
  g.setColor(Color.darkGray);
  g.drawString("9",xcenter-45,ycenter+3); 
  g.drawString("3",xcenter+40,ycenter+3);
  g.drawString("12",xcenter-5,ycenter-37);
  g.drawString("6",xcenter-3,ycenter+45);

  // Erase if necessary, and redraw
  
  g.setColor(getBackground());
  if (xs != lastxs || ys != lastys) {
    g.drawLine(xcenter, ycenter, lastxs, lastys);
    g.drawString(lastdate, 5, 125);
  }
  if (xm != lastxm || ym != lastym) {
    g.drawLine(xcenter, ycenter-1, lastxm, lastym);
    g.drawLine(xcenter-1, ycenter, lastxm, lastym); }
  if (xh != lastxh || yh != lastyh) {
    g.drawLine(xcenter, ycenter-1, lastxh, lastyh);
    g.drawLine(xcenter-1, ycenter, lastxh, lastyh); }
  g.setColor(Color.darkGray);
  g.drawString(today, 5, 125);  
  g.drawLine(xcenter, ycenter, xs, ys);
  g.setColor(Color.blue);
  g.drawLine(xcenter, ycenter-1, xm, ym);
  g.drawLine(xcenter-1, ycenter, xm, ym);
  g.drawLine(xcenter, ycenter-1, xh, yh);
  g.drawLine(xcenter-1, ycenter, xh, yh);
  lastxs=xs; lastys=ys;
  lastxm=xm; lastym=ym;
  lastxh=xh; lastyh=yh;
  lastdate = today;
  dat=null;
}
DEF_ENDLIST
DEF_METHOD
public void start() {
  if(timer == null)
    {
      timer = new Thread(this);
      timer.start();
    }
}
DEF_ENDLIST
DEF_METHOD
public void stop() {
  timer = null;
}
DEF_ENDLIST
DEF_METHOD
public void run() {
  while (timer != null) {
    try {Thread.sleep(100);} catch (InterruptedException e){}
    repaint();
  }
  timer = null;
}
DEF_ENDLIST
DEF_METHOD
public void update(Graphics g) {
  paint(g);
}
DEF_ENDLIST
DEF_PROPERTY
Top
int
move(bounds().x, AVALUE);
AVALUE = bounds().y;
0
DEF_ENDLIST
DEF_PROPERTY
Left
int
move(AVALUE, bounds().y);
AVALUE = bounds().x;
0
DEF_ENDLIST
DEF_PROPERTY
Height
int
resize(bounds().width, AVALUE);
AVALUE = bounds().height;
150
DEF_ENDLIST
DEF_PROPERTY
Width
int
resize(AVALUE, bounds().height);
AVALUE = bounds().width;
150
DEF_ENDLIST
DEF_ENDCOMPONENT
