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<?php /** *------------------------------------------------------------------------------ * iC Library - Library by Jooml!C, for Joomla! *------------------------------------------------------------------------------ * @package iC Library * @subpackage color * @copyright Copyright (c)2014-2015 Cyril Rezé, Jooml!C - All rights reserved * * @license GNU General Public License version 3 or later; see LICENSE.txt * @author Cyril Rezé (Lyr!C) * @link http://www.joomlic.com * * @version 1.0.0 2014-05-10 * @since 1.0.0 *------------------------------------------------------------------------------ */ // No direct access to this file defined('_JEXEC') or die(); /** * class iCColor */ class iCColor { /** * Function to convert color : hexadecimal to RGB * * @access public static * @param color to be converted in hexadecimal ('#xxxxxx') * @return converted color in RGB ('xxx,xxx,xxx') * * @since 1.0.0 */ static public function hex_to_rgb($color) { if (!is_array($color) && preg_match("/^[#]([0-9a-fA-F]{6})$/",$color)) { $hex_R = substr($color,1,2); $hex_G = substr($color,3,2); $hex_B = substr($color,5,2); $RGB = hexdec($hex_R).",".hexdec($hex_G).",".hexdec($hex_B); return $RGB; } else { return false; } } /** * Function to convert color : RGB to hexadecimal * * @access public static * @param color to be converted in RGB ('xxx,xxx,xxx' or 'array(xxx,xxx,xxx)') * @return converted color in hexadecimal ('#xxxxxx') * * @since 1.0.0 */ static public function rgb_to_hex($color) { if (!is_array($color)) { $color_array = explode(",", $color); } if (is_array($color_array) and count($color_array) === 3) { $hex_RGB = ""; foreach ($color_array as $value) { $hex_value = dechex($value); if (strlen($hex_value) < 2) { $hex_value = "0".$hex_value; } $hex_RGB.=$hex_value; } return "#".$hex_RGB; } else { return false; } } /** * Function to get brightness of hexadecimal color * * @access public static * @param color in hexadecimal ('#xxxxxx') * @return string ('dark' or 'bright') * * @since 1.0.0 */ static public function getBrightness($color) { if (!is_array($color) && preg_match("/^[#]([0-9a-fA-F]{6})$/",$color) && strlen($color) == 7) { $get_RGB = iCColor::hex_to_rgb($color); $RGB = explode(",",$get_RGB); $RGBa = $RGB[0]; $RGBb = $RGB[1]; $RGBc = $RGB[2]; $sum = ($RGBa + $RGBb + $RGBc); if ($sum > '384') // Color is bright { $brightness = 'bright'; } else // Color is dark { $brightness = 'dark'; } return $brightness; } else { return false; } } }
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