themes/darkness.php

   1 <?php
   2    /** Author:       Tyler Akins
   3        Theme Name:   "Darkness"
   4
   5        Like black?
   6
   7    **/
   8
   9    // Note:  The text distance is actually pre-squared
  10    // Background range is from 24-64, all three colors are the same
  11    // Text range is from 196 to 255
  12    $BackgroundTargetDistance = 12;
  13    $BackgroundAdjust = 1;
  14    $TextTargetDistance = 65536;
  15    $TextAdjust = 0.95;
  16
  17 function IsUnique($Distance, $r, $g, $b, $usedArray)
  18 {
  19    foreach ($usedArray as $data) {
  20       $a = abs($data[0] - $r);
  21       $b = abs($data[1] - $g);
  22       $c = abs($data[2] - $b);
  23       $newDistance = $a * $a + $b * $b + $c * $c;
  24       if ($newDistance < $Distance)
  25          return false;
  26    }
  27    return true;
  28 }
  29
  30
  31 // Extra spiffy page fade if left frame
  32 // Always tremble background
  33 // This might make people go insane.  Yes!  *Victory dance!*
  34 function Darkness_HeaderPlugin() {
  35    global $PHP_SELF, $Darkness_Transition;
  36
  37    if (substr($PHP_SELF, -18) == "/src/left_main.php") {
  38       echo '<meta http-equiv="Page-Enter" content="' .
  39          'blendTrans(Duration=2.0)">' . "\n";
  40    }
  41
  42 ?><script language=javascript>
  43 darkness_color = 0;
  44 darkness_dir = +1;
  45 darkness_hex = new Array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
  46    "A", "B", "C", "D", "E", "F");
  47 function DarknessTremble() {
  48    if (darkness_color >= 32 || darkness_color <= 0)
  49       darkness_dir = - darkness_dir;
  50    darkness_color += darkness_dir;
  51    if (darkness_color < 0)
  52       darkness_color = 0;
  53    bigDigit = Math.floor(darkness_color / 16);
  54    littleDigit = darkness_color - (bigDigit * 16);
  55    Color = darkness_hex[bigDigit] + darkness_hex[littleDigit];
  56    document.bgColor="#" + Color + Color + Color;
  57    setTimeout("DarknessTremble()", 5000);
  58 }
  59 setTimeout("DarknessTremble()", 10000);
  60 </script>
  61 <?PHP
  62 }
  63
  64 global $squirrelmail_plugin_hooks;
  65 $squirrelmail_plugin_hooks['generic_header']['theme_darkness'] =
  66     'Darkness_HeaderPlugin';
  67
  68    /** seed the random number generator **/
  69    sq_mt_randomize();
  70
  71    $color[3] = "#000000";
  72    $color[4] = "#000000";
  73    $used = array(0);
  74    $targetDistance = $BackgroundTargetDistance;
  75    $Left = array(0, 5, 9, 10, 12);
  76    while (count($Left) > 0) {
  77       // Some background colors
  78       $r = mt_rand(24,64);
  79       $unique = true;
  80       foreach ($used as $col) {
  81          if (abs($r - $col) < $targetDistance)
  82             $unique = false;
  83       }
  84       if ($unique) {
  85          $i = array_shift($Left);
  86          $color[$i] = sprintf("#%02X%02X%02X",$r,$r, $r);
  87          $used[] = $r;
  88          $targetDistance = $BackgroundTargetDistance;
  89       } else {
  90          $targetDistance -= $BackgroundAdjust;
  91       }
  92    }
  93
  94    // Set the error color to some shade of red
  95    $r = mt_rand(196, 255);
  96    $g = mt_rand(144, ($r * .8));
  97    $color[2] = sprintf("#%02X%02X%02X", $r, $g, $g);
  98    $used = array(array($r, $g, $g));
  99
 100    // Set normal text colors
 101    $cmin = 196;
 102    $cmax = 255;
 103    foreach (array(6, 8) as $i) {
 104       /** generate random color **/
 105       $r = mt_rand($cmin,$cmax);
 106       $g = mt_rand($cmin,$cmax);
 107       $b = mt_rand($cmin,$cmax);
 108       $color[$i] = sprintf("#%02X%02X%02X",$r,$g,$b);
 109       $used[] = array($r, $g, $b);
 110    }
 111
 112    $Left = array(1, 7, 11, 13, 14, 15);
 113    $targetDistance = $TextTargetDistance;
 114    while (count($Left) > 0) {
 115       // Text colors -- Try to keep the colors distinct
 116       $cmin = 196;
 117       $cmax = 255;
 118
 119       /** generate random color **/
 120       $r = mt_rand($cmin,$cmax);
 121       $g = mt_rand($cmin,$cmax);
 122       $b = mt_rand($cmin,$cmax);
 123
 124       if (IsUnique($targetDistance, $r, $g, $b, $used)) {
 125          $i = array_shift($Left);
 126          $color[$i] = sprintf("#%02X%02X%02X",$r,$g,$b);
 127          $used[] = array($r, $g, $b);
 128          $targetDistance = $TextTargetDistance;
 129       } else {
 130          $targetDistance *= $TextAdjust;
 131       }
 132    }
 133
 134
 135 /** Reference from  doc/themes.txt
 136
 137 b  0: Title Bar at the top of the page header
 138 f  1: <not currently used>
 139 f  2: Error messages, usually red
 140 b  3: Left folder list background color
 141 b  4: Normal background color
 142 b  5: Header of the message index [From, Date, Subject]
 143 f  6: Normal text on the left folder list
 144 f  7: Links in the right frame, Folders with subfolders in left frame
 145 f  8: Normal text [usually black]
 146 b  9: Darker version of #0
 147 b 10: Darker version of #9
 148 f 11: Special folders color [Inbox, Trash, Sent]
 149 b 12: Alternate color for message list [alters between 4 and this one]
 150 f 13: Color for single-quoted text ("> text") when reading (default:  #800000)
 151 f 14: Color for text with more than one quote (default: #FF0000)
 152
 153 **/
 154
 155 ?>