mirror of
https://github.com/wbbaddons/Tims-Chat.git
synced 2024-10-31 14:10:08 +00:00
38 lines
1.2 KiB
PHP
38 lines
1.2 KiB
PHP
<?php
|
|
namespace wcf\util;
|
|
|
|
/**
|
|
* Chat utilities
|
|
*
|
|
* @author Tim Düsterhus
|
|
* @copyright 2010-2011 Tim Düsterhus
|
|
* @license Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
|
|
* @package timwolla.wcf.chat
|
|
* @subpackage util
|
|
*/
|
|
class ChatUtil {
|
|
/**
|
|
* Creates a gradient out of two colors represented by an integer.
|
|
* The first byte is red, the second byte is green, the third one is blue.
|
|
* The numbers can be easily expressed in hexadecimal notation: 0xFF0000 being red.
|
|
*
|
|
* @param string $string
|
|
* @param integer $start
|
|
* @param integer $end
|
|
* @returen string
|
|
*/
|
|
public static function gradient($string, $start, $end) {
|
|
$string = str_split($string);
|
|
$r = (int) ((($start >> 16 & 255) - ($end >> 16 & 255)) / (count($string) - 1));
|
|
$g = (int) ((($start >> 8 & 255) - ($end >> 8 & 255)) / (count($string) - 1));
|
|
$b = (int) ((($start & 255) - ($end & 255)) / (count($string) - 1));
|
|
|
|
$result = '';
|
|
for ($i = 0, $max = count($string); $i < $max; $i++) {
|
|
$result .= '<span style="color:rgb('.(($start >> 16 & 255) - $i * $r).','.(($start >> 8 & 255) - $i * $g).','.(($start & 255) - $i * $b).')">'.$string[$i].'</span>';
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
}
|