m@0: import java.awt.*;
m@0: import java.awt.geom.*;
m@0: import javax.swing.*;
m@0: 
m@0: /** Clocks displayed in a panel. */
m@0: public class Clock extends JPanel implements Runnable {
m@0: 
m@0:     /* The default colours */ 
m@0:     static final Color BACKGROUND = Color.black; 
m@0:     static final Color FOREGROUND = Color.white; 
m@0: 
m@0:     /* Panel width, height and border. */
m@0:     public static final int WIDTH = 450;
m@0:     public static final int BORDER = 50;
m@0: 
m@0:     /* Minutes in a day. */
m@0:     public static final int ONE_DAY = 24 * 60;
m@0: 
m@0:     /* Show the clock? */ 
m@0:     public Boolean showClock = false; 
m@0:     public Boolean showFullClock = false; 
m@0: 
m@0:     /* minutes since midnight, range 0 to (ONE_DAY - 1) inclusive */ 
m@0:     private int minutes = 0;
m@0: 
m@0:     /* Milliseconds per tick of the minute hand */ 
m@0:     private long millisecondsPerTick = 1000; 
m@0:     public void  setMillisecondsPerTick(long n) { millisecondsPerTick = n; }
m@0: 
jeremy@27:     private boolean debug;
jeremy@27: 
m@0:     /* Create a new Clock at time midnight. */
jeremy@27:     public Clock(boolean d) {
m@0:         this.setBackground(BACKGROUND); 
m@0:         this.setPreferredSize (new Dimension (WIDTH, WIDTH));
jeremy@27: 	debug = d;
m@0:     }
m@0: 
m@0:     public void run() { 
m@0:         reset(); 
m@0:         if (showClock == false) { 
m@0:             showClock = true; 
m@0:             repaint(); 
m@0:         } 
m@0:         for (int i = 0; i < 60; i++) {
m@0:             try { Thread.sleep (millisecondsPerTick); } 
m@0:             catch (InterruptedException e) {}
m@0:             tick(1);
m@0:             repaint();
m@0:         }
m@4:         showClock = false;
m@4:         showFullClock = false;
jeremy@27:         if (debug)
jeremy@27: 	    System.out.println("RUN CLOCK");
m@4:         reset();
JShulver@23:         revalidate();
m@4:         repaint();
m@4:     }
m@0:     
m@0:     /* Move time on by 1 second. */
m@0:     public void tick(int n) {
m@0: 	minutes = (minutes + n) % ONE_DAY;
m@0:     }
m@0:     
m@0:     /* Reset the clock to 00:00. */ 
m@0:     public void reset() { 
jeremy@27:         if (debug)
jeremy@27: 	    System.out.println("RESET!");
m@0:         minutes = 0; 
m@0:     } 
m@0: 
m@0:     /* Draw the clock or fixation point. */
m@0:     public void paintComponent (Graphics g) {
JShulver@23: 	    super.paintComponent (g);
m@0:         
m@0:         if (showClock == true) { 
m@0:             paintClock(g); 
m@0:         } else { 
JShulver@23:             paintFixationPoint(g);
m@0:         }
JShulver@23:         //just ensure that java knows we want to draw new things
JShulver@23:         revalidate();
m@0:     }
m@0:     
m@0:     private void paintFixationPoint(Graphics g) { 
m@4:         //System.out.println("paintFixationPoint");
m@0: 	int left_edge = BORDER;
m@0: 	int top = BORDER;
m@0: 	int diameter = WIDTH - (BORDER * 2);
m@0: 	int centrex = left_edge + (diameter / 2); 
m@0: 	int centrey = top + (diameter / 2); 
m@0: 
m@0:         int linelength = diameter / 20;  
m@0: 
m@0:         g.setColor(FOREGROUND);
m@0:         g.drawLine(centrey, centrex - linelength, centrey, centrex + linelength);
m@0:         g.drawLine(centrey - linelength, centrex, centrey + linelength, centrex);
m@0:     } 
m@0: 
m@0:     private void paintClock (Graphics g) { 
m@4:         //System.out.println("paintClock");
m@0: 	int minutes_angle = 90 - ((minutes % 60) * 6);
m@0: 	int hours_angle = 90 - ((minutes / 60) * 30);
m@0: 	int left_edge = BORDER;
m@0: 	int top = BORDER;
m@0: 	int diameter = WIDTH - (BORDER * 2); 
JShulver@23:     int radius = diameter / 2; 
m@0: 	int centrex = left_edge + radius; 
m@0: 	int centrey = top + radius; 
m@0: 
m@0: 	g.setColor(FOREGROUND);
m@0: 
m@0: 	// draw the clock as a black circle:
m@0: 	g.drawOval(left_edge, top, diameter, diameter);
m@0: 
m@0: 	// draw the hour numbers 
JShulver@23:     int offset = 0; 
m@0: 	for(int i = 1; i <= 12; i++) {
m@0: 	    int hours_pos = 90 - (i * 30); 
m@0: 	    int x = (centrex - offset)  + 
m@0:                 (int)((radius - 5) * Math.cos(hours_pos * Math.PI / 180));
m@0: 	    int y = (centrey + offset) - 
m@0:                 (int)((radius - 5) * Math.sin(hours_pos * Math.PI / 180));
m@0: 	    //g.drawString(String.valueOf(i), x, y); 
m@0:             g.drawOval(x, y, diameter / 200, diameter / 200); 
m@0: 	}
m@0: 
m@0: 	// get the coordinate of the line_ends 		
m@0: 	int minutesx = (int)((radius - 5) * 
m@0:                              Math.cos(minutes_angle * Math.PI / 180)); 
m@0: 	int minutesy = (int)((radius - 5) * 
m@0:                              Math.sin(minutes_angle * Math.PI /180)); 
m@0:         
m@0:         // draw the minutes' hand
m@0:         g.drawLine(centrex, centrey, centrex + minutesx, centrey - minutesy);
m@0: 
m@0:         int arc_angle = minutes_angle - 90; 
m@0:         Graphics2D g2 = (Graphics2D)g;
m@0:         g2.setPaint(FOREGROUND);
m@0:         
jeremy@27:         if (debug) 
jeremy@27: 	    System.out.println("minutes_angle = " + minutes_angle + 
JShulver@23:                            "; arc_angle = " + arc_angle); 
m@0: 
m@0:         if (arc_angle == 0 & showFullClock == true) { 
m@0:             g2.fillOval(left_edge, top, diameter, diameter);
m@0:             showFullClock = false; 
m@0:         } else { 
m@0:             showFullClock = true; 
m@0:             if (arc_angle >= -180) { 
m@0:                 Arc2D pie = new Arc2D.Float(centrex - radius, centrey - radius, 
m@0:                                             2 * radius, 2 * radius, 
m@0:                                             90, arc_angle,
m@0:                                             Arc2D.PIE);
m@0:                 g2.fill(pie);
m@0:             } else { 
m@0:                 Arc2D pie1 = new Arc2D.Float(centrex - radius, centrey - radius, 
m@0:                                              2 * radius, 2 * radius, 
m@0:                                              90, -180, Arc2D.PIE);
m@0:                 Arc2D pie2 = new Arc2D.Float(centrex - radius, centrey - radius, 
m@0:                                              2 * radius, 2 * radius, 
m@0:                                              270, arc_angle + 180,
m@0:                                              Arc2D.PIE);
m@0:                 g2.fill(pie1);
m@0:                 g2.fill(pie2);
m@0:             }
m@0:         }
m@0:     }
m@0: }