themes/darkness.php

   1 <?php
   2
   3 /**
   4  * Theme Name:   'Darkness'
   5  * Like black?
   6  *
   7  * @author Tyler Akins
   8  * @copyright &copy; 2001-2006 The SquirrelMail Project Team
   9  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  10  * @version $Id$
  11  * @package squirrelmail
  12  * @subpackage themes
  13  */
  14
  15 /**
  16  * Load up the usual suspects.. */
  17 require_once(SM_PATH . 'functions/strings.php');
  18
  19    // Note:  The text distance is actually pre-squared
  20    // Background range is from 24-64, all three colors are the same
  21    // Text range is from 196 to 255
  22    $BackgroundTargetDistance = 12;
  23    $BackgroundAdjust = 1;
  24    $TextTargetDistance = 65536;
  25    $TextAdjust = 0.95;
  26
  27 function IsUnique($Distance, $r, $g, $b, $usedArray)
  28 {
  29    foreach ($usedArray as $data) {
  30       $a = abs($data[0] - $r);
  31       $b = abs($data[1] - $g);
  32       $c = abs($data[2] - $b);
  33       $newDistance = $a * $a + $b * $b + $c * $c;
  34       if ($newDistance < $Distance)
  35          return false;
  36    }
  37    return true;
  38 }
  39
  40
  41 // Extra spiffy page fade if left frame
  42 // Always tremble background
  43 // This might make people go insane.  Yes!  *Victory dance!*
  44 function Darkness_HeaderPlugin() {
  45    global $PHP_SELF;
  46
  47    if (substr($PHP_SELF, -18) == '/src/left_main.php') {
  48       echo '<meta http-equiv="Page-Enter" content="' .
  49          'blendTrans(Duration=2.0)" />' . "\n";
  50    }
  51
  52 ?><script type="text/javascript">
  53 darkness_color = 0;
  54 darkness_dir = +1;
  55 darkness_hex = new Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
  56    'a', 'b', 'c', 'd', 'e', 'f');
  57 function DarknessTremble() {
  58    if (darkness_color >= 32 || darkness_color <= 0)
  59       darkness_dir = - darkness_dir;
  60    darkness_color += darkness_dir;
  61    if (darkness_color < 0)
  62       darkness_color = 0;
  63    bigDigit = Math.floor(darkness_color / 16);
  64    littleDigit = darkness_color - (bigDigit * 16);
  65    Color = darkness_hex[bigDigit] + darkness_hex[littleDigit];
  66    document.bgColor='#' + Color + Color + Color;
  67    setTimeout('DarknessTremble()', 5000);
  68 }
  69 setTimeout('DarknessTremble()', 10000);
  70 </script>
  71 <?php
  72 }
  73
  74 global $squirrelmail_plugin_hooks;
  75 $squirrelmail_plugin_hooks['generic_header']['theme_darkness'] =
  76     'Darkness_HeaderPlugin';
  77
  78 /** seed the random number generator **/
  79 sq_mt_randomize();
  80
  81 $color[3] = '#000000';
  82 $color[4] = '#000000';
  83 $used = array(0);
  84 $targetDistance = $BackgroundTargetDistance;
  85 $Left = array(0, 5, 9, 10, 12);
  86 while (count($Left) > 0) {
  87     // Some background colors
  88     $r = mt_rand(24,64);
  89     $unique = true;
  90     foreach ($used as $col) {
  91         if (abs($r - $col) < $targetDistance)
  92             $unique = false;
  93     }
  94     if ($unique) {
  95         $i = array_shift($Left);
  96         $color[$i] = sprintf('#%02X%02X%02X',$r,$r, $r);
  97         $used[] = $r;
  98         $targetDistance = $BackgroundTargetDistance;
  99     } else {
 100         $targetDistance -= $BackgroundAdjust;
 101     }
 102 }
 103
 104 // Set the error color to some shade of red
 105 $r = mt_rand(196, 255);
 106 $g = mt_rand(144, ($r * .8));
 107 $color[2] = sprintf('#%02X%02X%02X', $r, $g, $g);
 108 $used = array(array($r, $g, $g));
 109
 110 // Set normal text colors
 111 $cmin = 196;
 112 $cmax = 255;
 113 foreach (array(6, 8) as $i) {
 114     /** generate random color **/
 115     $r = mt_rand($cmin,$cmax);
 116     $g = mt_rand($cmin,$cmax);
 117     $b = mt_rand($cmin,$cmax);
 118     $color[$i] = sprintf('#%02X%02X%02X',$r,$g,$b);
 119     $used[] = array($r, $g, $b);
 120 }
 121
 122 $Left = array(1, 7, 11, 13, 14, 15);
 123 $targetDistance = $TextTargetDistance;
 124 while (count($Left) > 0) {
 125     // Text colors -- Try to keep the colors distinct
 126     $cmin = 196;
 127     $cmax = 255;
 128
 129     /** generate random color **/
 130     $r = mt_rand($cmin,$cmax);
 131     $g = mt_rand($cmin,$cmax);
 132     $b = mt_rand($cmin,$cmax);
 133
 134     if (IsUnique($targetDistance, $r, $g, $b, $used)) {
 135         $i = array_shift($Left);
 136         $color[$i] = sprintf('#%02X%02X%02X',$r,$g,$b);
 137         $used[] = array($r, $g, $b);
 138         $targetDistance = $TextTargetDistance;
 139     } else {
 140         $targetDistance *= $TextAdjust;
 141     }
 142 }