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Java Source | 2002-09-06 | 8.5 KB | 228 lines |
- /*
- * Copyright (c) 2002 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * -Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
- * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
- * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT
- * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
- * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS
- * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
- * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
- * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
- * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN
- * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed, licensed or intended for
- * use in the design, construction, operation or maintenance of any nuclear
- * facility.
- */
-
- /*
- * @(#)Clock.java 1.11 02/06/13
- */
-
- import java.util.*;
- import java.awt.*;
- import java.applet.*;
- import java.text.*;
-
- /**
- * Time!
- *
- * @author Rachel Gollub
- * @modified Daniel Peek replaced circle drawing calculation, few more changes
- */
- public class Clock extends Applet implements Runnable {
- private volatile Thread timer; // The thread that displays clock
- private int lastxs, lastys, lastxm,
- lastym, lastxh, lastyh; // Dimensions used to draw hands
- private SimpleDateFormat formatter; // Formats the date displayed
- private String lastdate; // String to hold date displayed
- private Font clockFaceFont; // Font for number display on clock
- private Date currentDate; // Used to get date to display
- private Color handColor; // Color of main hands and dial
- private Color numberColor; // Color of second hand and numbers
- private int xcenter = 80, ycenter = 55; // Center position
-
- public void init() {
- int x,y;
- lastxs = lastys = lastxm = lastym = lastxh = lastyh = 0;
- formatter = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy",
- Locale.getDefault());
- currentDate = new Date();
- lastdate = formatter.format(currentDate);
- clockFaceFont = new Font("Serif", Font.PLAIN, 14);
- handColor = Color.blue;
- numberColor = Color.darkGray;
-
- try {
- setBackground(new Color(Integer.parseInt(getParameter("bgcolor"),
- 16)));
- } catch (NullPointerException e) {
- } catch (NumberFormatException e) {
- }
- try {
- handColor = new Color(Integer.parseInt(getParameter("fgcolor1"),
- 16));
- } catch (NullPointerException e) {
- } catch (NumberFormatException e) {
- }
- try {
- numberColor = new Color(Integer.parseInt(getParameter("fgcolor2"),
- 16));
- } catch (NullPointerException e) {
- } catch (NumberFormatException e) {
- }
- resize(300,300); // Set clock window size
- }
-
- // Paint is the main part of the program
- public void update(Graphics g) {
- int xh, yh, xm, ym, xs, ys;
- int s = 0, m = 10, h = 10;
- String today;
-
- currentDate = new Date();
-
- formatter.applyPattern("s");
- try {
- s = Integer.parseInt(formatter.format(currentDate));
- } catch (NumberFormatException n) {
- s = 0;
- }
- formatter.applyPattern("m");
- try {
- m = Integer.parseInt(formatter.format(currentDate));
- } catch (NumberFormatException n) {
- m = 10;
- }
- formatter.applyPattern("h");
- try {
- h = Integer.parseInt(formatter.format(currentDate));
- } catch (NumberFormatException n) {
- h = 10;
- }
-
- // Set position of the ends of the hands
- xs = (int) (Math.cos(s * Math.PI / 30 - Math.PI / 2) * 45 + xcenter);
- ys = (int) (Math.sin(s * Math.PI / 30 - Math.PI / 2) * 45 + ycenter);
- xm = (int) (Math.cos(m * Math.PI / 30 - Math.PI / 2) * 40 + xcenter);
- ym = (int) (Math.sin(m * Math.PI / 30 - Math.PI / 2) * 40 + ycenter);
- xh = (int) (Math.cos((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30
- + xcenter);
- yh = (int) (Math.sin((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30
- + ycenter);
-
- // Get the date to print at the bottom
- formatter.applyPattern("EEE MMM dd HH:mm:ss yyyy");
- today = formatter.format(currentDate);
-
- g.setFont(clockFaceFont);
- // Erase if necessary
- 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);
- }
-
- // Draw date and hands
- g.setColor(numberColor);
- g.drawString(today, 5, 125);
- g.drawLine(xcenter, ycenter, xs, ys);
- g.setColor(handColor);
- 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;
- currentDate = null;
- }
-
- public void paint(Graphics g) {
- g.setFont(clockFaceFont);
- // Draw the circle and numbers
- g.setColor(handColor);
- g.drawArc(xcenter-50, ycenter-50, 100, 100, 0, 360);
- g.setColor(numberColor);
- 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);
-
- // Draw date and hands
- g.setColor(numberColor);
- g.drawString(lastdate, 5, 125);
- g.drawLine(xcenter, ycenter, lastxs, lastys);
- g.setColor(handColor);
- g.drawLine(xcenter, ycenter-1, lastxm, lastym);
- g.drawLine(xcenter-1, ycenter, lastxm, lastym);
- g.drawLine(xcenter, ycenter-1, lastxh, lastyh);
- g.drawLine(xcenter-1, ycenter, lastxh, lastyh);
- }
-
- public void start() {
- timer = new Thread(this);
- timer.start();
- }
-
- public void stop() {
- timer = null;
- }
-
- public void run() {
- Thread me = Thread.currentThread();
- while (timer == me) {
- try {
- Thread.currentThread().sleep(100);
- } catch (InterruptedException e) {
- }
- repaint();
- }
- }
-
- public String getAppletInfo() {
- return "Title: A Clock \n"
- + "Author: Rachel Gollub, 1995 \n"
- + "An analog clock.";
- }
-
- public String[][] getParameterInfo() {
- String[][] info = {
- {"bgcolor", "hexadecimal RGB number",
- "The background color. Default is the color of your browser."},
- {"fgcolor1", "hexadecimal RGB number",
- "The color of the hands and dial. Default is blue."},
- {"fgcolor2", "hexadecimal RGB number",
- "The color of the second hand and numbers. Default is dark gray."}
- };
- return info;
- }
- }
-