6 * Date: October 20, 2001
7 * Comment: Generates random two-color frames, featuring either
8 * a dark or light background.
11 * @copyright 2000-2016 The SquirrelMail Project Team
12 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
14 * @package squirrelmail
18 /** Prevent direct script loading */
19 if (isset($_SERVER['SCRIPT_FILENAME']) && $_SERVER['SCRIPT_FILENAME'] == __FILE__
) {
23 /** light(1) or dark(0) background toggle **/
26 /** range delimiter **/
31 $cmax_b = 127 +
$bgrd;
33 /** generate random color **/
34 $rb = mt_rand($cmin_b,$cmax_b);
35 $gb = mt_rand($cmin_b,$cmax_b);
36 $bb = mt_rand($cmin_b,$cmax_b);
39 $cmin_t = 128 - $bgrd;
40 $cmax_t = 255 - $bgrd;
42 /** generate random color **/
43 $rt = mt_rand($cmin_t,$cmax_t);
44 $gt = mt_rand($cmin_t,$cmax_t);
45 $bt = mt_rand($cmin_t,$cmax_t);
47 /** set array element as hex string with hashmark (for HTML output) **/
48 for ($i = 0; $i <= 16; $i++
) {
49 if ($i == 0 or $i == 3 or $i == 4 or $i == 5 or $i == 9 or $i == 10 or $i == 12 or $i == 16) {
50 $color[$i] = sprintf('#%02X%02X%02X',$rb,$gb,$bb);
52 $color[$i] = sprintf('#%02X%02X%02X',$rt,$gt,$bt);