RGB Converter.wdgt/Widget.js

   1 /*=====================================================================*\
   2 || ###################################################################
   3 || # RGB Converter [#]version[#]
   4 || # Copyright ©2002-[#]year[#] Blue Static
   5 || #
   6 || # This program is free software; you can redistribute it and/or modify
   7 || # it under the terms of the GNU General Public License as published by
   8 || # the Free Software Foundation; version [#]gpl[#] of the License.
   9 || #
  10 || # This program is distributed in the hope that it will be useful, but
  11 || # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12 || # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  13 || # more details.
  14 || #
  15 || # You should have received a copy of the GNU General Public License along
  16 || # with this program; if not, write to the Free Software Foundation, Inc.,
  17 || # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  18 || ###################################################################
  19 \*=====================================================================*/
  20
  21 var fields = {
  22         red : 0,
  23         green : 0,
  24         blue : 0,
  25         hex : ''
  26 };
  27
  28 // ###################################################################
  29 // widget init
  30 function setup()
  31 {
  32         createGenericButton(document.getElementById("backbutton"), "Done", hide_back, 0);
  33         document.getElementById("revision").innerHTML = "(r" + document.getElementById("revision").innerHTML.replace(/[^0-9]/g, "") + ")";
  34 }
  35
  36 // ###################################################################
  37 // watches the three RGB fields to make sure they don't go over the limites
  38 function rgbwatcher(colour)
  39 {
  40         field = document.getElementById(colour + "inputf");
  41
  42         // sanitize the number
  43         var newval = field.value.replace(/[^0-9\-\.]*/g, "");
  44         newval = Math.floor(newval);
  45
  46         // make sure we don't go over 255
  47         if (newval > 255)
  48         {
  49                 newval = 255;
  50         }
  51         else if (newval < 0)
  52         {
  53                 newval = 0;
  54         }
  55
  56         // update the text field
  57         field.value = newval;
  58
  59         // set fields[]
  60         fields[colour] = newval;
  61
  62         // set hex
  63         update_hex();
  64
  65         // redraw the swatch
  66         update_swatch();
  67 }
  68
  69 // ###################################################################
  70 // watches the hex field for updates
  71 function hexwatcher()
  72 {
  73         field = document.getElementById("hexinputf");
  74
  75         // sanitize the hex
  76         var newval = field.value.replace(/[^0-9a-f]*/gi, "");
  77
  78         // get the length
  79         var length = newval.length;
  80
  81         // make sure we're always 6
  82         if (length > 6)
  83         {
  84                 newval = newval.substr(0, 6);
  85         }
  86         else if (length == 3)
  87         {
  88                 newval = newval.substr(0, 1) + newval.substr(0, 1) + newval.substr(1, 1) + newval.substr(1, 1) + newval.substr(2, 1) + newval.substr(2, 1);
  89         }
  90         else if (length < 6)
  91         {
  92                 for (var i = length; i <= 6; i++)
  93                 {
  94                         newval = "" + newval + "0";
  95                 }
  96         }
  97
  98         // update the field
  99         field.value = newval;
 100
 101         // update fields[]
 102         fields['hex'] = newval;
 103
 104         // set RGB
 105         update_rgb();
 106
 107         // redraw the swatch
 108         update_swatch();
 109 }
 110
 111 // ###################################################################
 112 // update the hex value
 113 function update_hex()
 114 {
 115         var hexstr = dec2hex(fields['red']) + dec2hex(fields['green']) + dec2hex(fields['blue']);
 116         fields['hex'] = hexstr;
 117         document.getElementById("hexinputf").value = hexstr;
 118 }
 119
 120 // ###################################################################
 121 // update the RGB values
 122 function update_rgb()
 123 {
 124         // regex match the bits
 125         var bits = fields['hex'].match(/(..)(..)(..)/);
 126
 127         fields['red'] = hex2dec(bits[1]);
 128         fields['green'] = hex2dec(bits[2]);
 129         fields['blue'] = hex2dec(bits[3]);
 130
 131         // construct the hex values
 132         document.getElementById("redinputf").value = fields['red'];
 133         document.getElementById("greeninputf").value = fields['green'];
 134         document.getElementById("blueinputf").value = fields['blue'];
 135 }
 136
 137 // ###################################################################
 138 // update the colour swatch
 139 function update_swatch()
 140 {
 141         document.getElementById("swatch").style.backgroundColor = "rgb(" + fields['red'] + ", " + fields['green'] + ", " + fields['blue'] + ")";
 142         document.getElementById("swatch-red").style.backgroundColor = "rgb(" + fields['red'] + ", 0, 0)";
 143         document.getElementById("swatch-green").style.backgroundColor = "rgb(0, " + fields['green'] + ", 0)";
 144         document.getElementById("swatch-blue").style.backgroundColor = "rgb(0, 0, " + fields['blue'] + ")";
 145 }
 146
 147 // ###################################################################
 148 // convert a decimal to a hexidecimal
 149 function dec2hex(dec)
 150 {
 151         var hexstr = "0123456789ABCDEF";
 152         var low = dec % 16;
 153         var high = (dec - low) / 16;
 154         hex = "" + hexstr.charAt(high) + hexstr.charAt(low);
 155
 156         return hex.toString();
 157 }
 158
 159 // ###################################################################
 160 // converts a hexidecimal to a decimal
 161 function hex2dec(hex)
 162 {
 163         return parseInt(hex, 16);
 164 }
 165
 166 // ###################################################################
 167 // ###################################################################
 168 // ###################################################################
 169
 170 // flip data
 171
 172 function show_back()
 173 {
 174         var front = document.getElementById("front");
 175         var back = document.getElementById("back");
 176
 177         if (window.widget)
 178         {
 179                 widget.prepareForTransition("ToBack");
 180         }
 181
 182         front.style.display = "none";
 183         back.style.display = "block";
 184
 185         if (window.widget)
 186         {
 187                 setTimeout("widget.performTransition();", 0);
 188         }
 189
 190         document.getElementById("fliprollie").style.display = "none";
 191 }
 192
 193 function hide_back()
 194 {
 195         var front = document.getElementById("front");
 196         var back = document.getElementById("back");
 197
 198         if (window.widget)
 199         {
 200                 widget.prepareForTransition("ToFront");
 201         }
 202
 203         back.style.display = "none";
 204         front.style.display = "block";
 205
 206         if (window.widget)
 207         {
 208                 setTimeout("widget.performTransition();", 0);
 209         }
 210 }
 211
 212 var flipShown = false;
 213
 214 var animation = {
 215         duration : 0,
 216         starttime : 0,
 217         to : 1.0,
 218         now : 0.0,
 219         from : 0.0,
 220         firstElement : null,
 221         timer : null
 222 };
 223
 224 function mousemove(event)
 225 {
 226         if (!flipShown)
 227         {
 228                 if (animation.timer != null)
 229                 {
 230                         clearInterval(animation.timer);
 231                         animation.timer  = null;
 232                 }
 233
 234                 var starttime = (new Date).getTime() - 13;
 235
 236                 animation.duration = 500;
 237                 animation.starttime = starttime;
 238                 animation.firstElement = document.getElementById("flip");
 239                 animation.timer = setInterval("animate();", 13);
 240                 animation.from = animation.now;
 241                 animation.to = 1.0;
 242                 animate();
 243                 flipShown = true;
 244         }
 245 }
 246
 247 function mouseexit(event)
 248 {
 249         if (flipShown)
 250         {
 251                 // fade in the flip widget
 252                 if (animation.timer != null)
 253                 {
 254                         clearInterval (animation.timer);
 255                         animation.timer  = null;
 256                 }
 257
 258                 var starttime = (new Date).getTime() - 13;
 259
 260                 animation.duration = 500;
 261                 animation.starttime = starttime;
 262                 animation.firstElement = document.getElementById("flip");
 263                 animation.timer = setInterval("animate();", 13);
 264                 animation.from = animation.now;
 265                 animation.to = 0.0;
 266                 animate();
 267                 flipShown = false;
 268         }
 269 }
 270
 271
 272 function animate()
 273 {
 274         var T;
 275         var ease;
 276         var time = (new Date).getTime();
 277
 278         T = limit_3(time - animation.starttime, 0, animation.duration);
 279
 280         if (T >= animation.duration)
 281         {
 282                 clearInterval(animation.timer);
 283                 animation.timer = null;
 284                 animation.now = animation.to;
 285         }
 286         else
 287         {
 288                 ease = 0.5 - (0.5 * Math.cos(Math.PI * T / animation.duration));
 289                 animation.now = compute_next_float(animation.from, animation.to, ease);
 290         }
 291
 292         animation.firstElement.style.opacity = animation.now;
 293 }
 294
 295 function limit_3 (a, b, c)
 296 {
 297     return a < b ? b : (a > c ? c : a);
 298 }
 299
 300 function compute_next_float(from, to, ease)
 301 {
 302     return from + (to - from) * ease;
 303 }
 304
 305 function enterflip(event)
 306 {
 307         document.getElementById("fliprollie").style.display = "block";
 308 }
 309
 310 function exitflip(event)
 311 {
 312         document.getElementById("fliprollie").style.display = "none";
 313 }
 314
 315 /*=====================================================================*\
 316 || ###################################################################
 317 || # $HeadURL$
 318 || # $Id$
 319 || ###################################################################
 320 \*=====================================================================*/