J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * |
| 8 | * - Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * - Neither the name of Sun Microsystems nor the names of its |
| 16 | * contributors may be used to endorse or promote products derived |
| 17 | * from this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | */ |
| 34 | |
| 35 | import java.util.*; |
| 36 | import java.awt.*; |
| 37 | import java.applet.*; |
| 38 | import java.text.*; |
| 39 | |
| 40 | /** |
| 41 | * Time! |
| 42 | * |
| 43 | * @author Rachel Gollub |
| 44 | * @modified Daniel Peek replaced circle drawing calculation, few more changes |
| 45 | */ |
| 46 | public class Clock extends Applet implements Runnable { |
| 47 | private volatile Thread timer; // The thread that displays clock |
| 48 | private int lastxs, lastys, lastxm, |
| 49 | lastym, lastxh, lastyh; // Dimensions used to draw hands |
| 50 | private SimpleDateFormat formatter; // Formats the date displayed |
| 51 | private String lastdate; // String to hold date displayed |
| 52 | private Font clockFaceFont; // Font for number display on clock |
| 53 | private Date currentDate; // Used to get date to display |
| 54 | private Color handColor; // Color of main hands and dial |
| 55 | private Color numberColor; // Color of second hand and numbers |
| 56 | private int xcenter = 80, ycenter = 55; // Center position |
| 57 | |
| 58 | public void init() { |
| 59 | int x,y; |
| 60 | lastxs = lastys = lastxm = lastym = lastxh = lastyh = 0; |
| 61 | formatter = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy", |
| 62 | Locale.getDefault()); |
| 63 | currentDate = new Date(); |
| 64 | lastdate = formatter.format(currentDate); |
| 65 | clockFaceFont = new Font("Serif", Font.PLAIN, 14); |
| 66 | handColor = Color.blue; |
| 67 | numberColor = Color.darkGray; |
| 68 | |
| 69 | try { |
| 70 | setBackground(new Color(Integer.parseInt(getParameter("bgcolor"), |
| 71 | 16))); |
| 72 | } catch (NullPointerException e) { |
| 73 | } catch (NumberFormatException e) { |
| 74 | } |
| 75 | try { |
| 76 | handColor = new Color(Integer.parseInt(getParameter("fgcolor1"), |
| 77 | 16)); |
| 78 | } catch (NullPointerException e) { |
| 79 | } catch (NumberFormatException e) { |
| 80 | } |
| 81 | try { |
| 82 | numberColor = new Color(Integer.parseInt(getParameter("fgcolor2"), |
| 83 | 16)); |
| 84 | } catch (NullPointerException e) { |
| 85 | } catch (NumberFormatException e) { |
| 86 | } |
| 87 | resize(300,300); // Set clock window size |
| 88 | } |
| 89 | |
| 90 | // Paint is the main part of the program |
| 91 | public void update(Graphics g) { |
| 92 | int xh, yh, xm, ym, xs, ys; |
| 93 | int s = 0, m = 10, h = 10; |
| 94 | String today; |
| 95 | |
| 96 | currentDate = new Date(); |
| 97 | |
| 98 | formatter.applyPattern("s"); |
| 99 | try { |
| 100 | s = Integer.parseInt(formatter.format(currentDate)); |
| 101 | } catch (NumberFormatException n) { |
| 102 | s = 0; |
| 103 | } |
| 104 | formatter.applyPattern("m"); |
| 105 | try { |
| 106 | m = Integer.parseInt(formatter.format(currentDate)); |
| 107 | } catch (NumberFormatException n) { |
| 108 | m = 10; |
| 109 | } |
| 110 | formatter.applyPattern("h"); |
| 111 | try { |
| 112 | h = Integer.parseInt(formatter.format(currentDate)); |
| 113 | } catch (NumberFormatException n) { |
| 114 | h = 10; |
| 115 | } |
| 116 | |
| 117 | // Set position of the ends of the hands |
| 118 | xs = (int) (Math.cos(s * Math.PI / 30 - Math.PI / 2) * 45 + xcenter); |
| 119 | ys = (int) (Math.sin(s * Math.PI / 30 - Math.PI / 2) * 45 + ycenter); |
| 120 | xm = (int) (Math.cos(m * Math.PI / 30 - Math.PI / 2) * 40 + xcenter); |
| 121 | ym = (int) (Math.sin(m * Math.PI / 30 - Math.PI / 2) * 40 + ycenter); |
| 122 | xh = (int) (Math.cos((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30 |
| 123 | + xcenter); |
| 124 | yh = (int) (Math.sin((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30 |
| 125 | + ycenter); |
| 126 | |
| 127 | // Get the date to print at the bottom |
| 128 | formatter.applyPattern("EEE MMM dd HH:mm:ss yyyy"); |
| 129 | today = formatter.format(currentDate); |
| 130 | |
| 131 | g.setFont(clockFaceFont); |
| 132 | // Erase if necessary |
| 133 | g.setColor(getBackground()); |
| 134 | if (xs != lastxs || ys != lastys) { |
| 135 | g.drawLine(xcenter, ycenter, lastxs, lastys); |
| 136 | g.drawString(lastdate, 5, 125); |
| 137 | } |
| 138 | if (xm != lastxm || ym != lastym) { |
| 139 | g.drawLine(xcenter, ycenter-1, lastxm, lastym); |
| 140 | g.drawLine(xcenter-1, ycenter, lastxm, lastym); |
| 141 | } |
| 142 | if (xh != lastxh || yh != lastyh) { |
| 143 | g.drawLine(xcenter, ycenter-1, lastxh, lastyh); |
| 144 | g.drawLine(xcenter-1, ycenter, lastxh, lastyh); |
| 145 | } |
| 146 | |
| 147 | // Draw date and hands |
| 148 | g.setColor(numberColor); |
| 149 | g.drawString(today, 5, 125); |
| 150 | g.drawLine(xcenter, ycenter, xs, ys); |
| 151 | g.setColor(handColor); |
| 152 | g.drawLine(xcenter, ycenter-1, xm, ym); |
| 153 | g.drawLine(xcenter-1, ycenter, xm, ym); |
| 154 | g.drawLine(xcenter, ycenter-1, xh, yh); |
| 155 | g.drawLine(xcenter-1, ycenter, xh, yh); |
| 156 | lastxs = xs; lastys = ys; |
| 157 | lastxm = xm; lastym = ym; |
| 158 | lastxh = xh; lastyh = yh; |
| 159 | lastdate = today; |
| 160 | currentDate = null; |
| 161 | } |
| 162 | |
| 163 | public void paint(Graphics g) { |
| 164 | g.setFont(clockFaceFont); |
| 165 | // Draw the circle and numbers |
| 166 | g.setColor(handColor); |
| 167 | g.drawArc(xcenter-50, ycenter-50, 100, 100, 0, 360); |
| 168 | g.setColor(numberColor); |
| 169 | g.drawString("9", xcenter-45, ycenter+3); |
| 170 | g.drawString("3", xcenter+40, ycenter+3); |
| 171 | g.drawString("12", xcenter-5, ycenter-37); |
| 172 | g.drawString("6", xcenter-3, ycenter+45); |
| 173 | |
| 174 | // Draw date and hands |
| 175 | g.setColor(numberColor); |
| 176 | g.drawString(lastdate, 5, 125); |
| 177 | g.drawLine(xcenter, ycenter, lastxs, lastys); |
| 178 | g.setColor(handColor); |
| 179 | g.drawLine(xcenter, ycenter-1, lastxm, lastym); |
| 180 | g.drawLine(xcenter-1, ycenter, lastxm, lastym); |
| 181 | g.drawLine(xcenter, ycenter-1, lastxh, lastyh); |
| 182 | g.drawLine(xcenter-1, ycenter, lastxh, lastyh); |
| 183 | } |
| 184 | |
| 185 | public void start() { |
| 186 | timer = new Thread(this); |
| 187 | timer.start(); |
| 188 | } |
| 189 | |
| 190 | public void stop() { |
| 191 | timer = null; |
| 192 | } |
| 193 | |
| 194 | public void run() { |
| 195 | Thread me = Thread.currentThread(); |
| 196 | while (timer == me) { |
| 197 | try { |
| 198 | Thread.currentThread().sleep(100); |
| 199 | } catch (InterruptedException e) { |
| 200 | } |
| 201 | repaint(); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | public String getAppletInfo() { |
| 206 | return "Title: A Clock \n" |
| 207 | + "Author: Rachel Gollub, 1995 \n" |
| 208 | + "An analog clock."; |
| 209 | } |
| 210 | |
| 211 | public String[][] getParameterInfo() { |
| 212 | String[][] info = { |
| 213 | {"bgcolor", "hexadecimal RGB number", |
| 214 | "The background color. Default is the color of your browser."}, |
| 215 | {"fgcolor1", "hexadecimal RGB number", |
| 216 | "The color of the hands and dial. Default is blue."}, |
| 217 | {"fgcolor2", "hexadecimal RGB number", |
| 218 | "The color of the second hand and numbers. Default is dark gray."} |
| 219 | }; |
| 220 | return info; |
| 221 | } |
| 222 | } |