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Direktori : /home2/selectio/www/bharath/3idiotsgadgetstore.in/vendor/mpdf/mpdf/src/Gif/ |
Current File : /home2/selectio/www/bharath/3idiotsgadgetstore.in/vendor/mpdf/mpdf/src/Gif/ColorTable.php |
<?php namespace Mpdf\Gif; /** * GIF Util - (C) 2003 Yamasoft (S/C) * * All Rights Reserved * * This file can be freely copied, distributed, modified, updated by anyone under the only * condition to leave the original address (Yamasoft, http://www.yamasoft.com) and this header. * * @link http://www.yamasoft.com */ class ColorTable { var $m_nColors; var $m_arColors; public function __construct() { unset($this->m_nColors); unset($this->m_arColors); } function load($lpData, $num) { $this->m_nColors = 0; $this->m_arColors = []; for ($i = 0; $i < $num; $i++) { $rgb = substr($lpData, $i * 3, 3); if (strlen($rgb) < 3) { return false; } $this->m_arColors[] = (ord($rgb[2]) << 16) + (ord($rgb[1]) << 8) + ord($rgb[0]); $this->m_nColors++; } return true; } function toString() { $ret = ""; for ($i = 0; $i < $this->m_nColors; $i++) { $ret .= chr(($this->m_arColors[$i] & 0x000000FF)) . // R chr(($this->m_arColors[$i] & 0x0000FF00) >> 8) . // G chr(($this->m_arColors[$i] & 0x00FF0000) >> 16); // B } return $ret; } function colorIndex($rgb) { $rgb = intval($rgb) & 0xFFFFFF; $r1 = ($rgb & 0x0000FF); $g1 = ($rgb & 0x00FF00) >> 8; $b1 = ($rgb & 0xFF0000) >> 16; $idx = -1; for ($i = 0; $i < $this->m_nColors; $i++) { $r2 = ($this->m_arColors[$i] & 0x000000FF); $g2 = ($this->m_arColors[$i] & 0x0000FF00) >> 8; $b2 = ($this->m_arColors[$i] & 0x00FF0000) >> 16; $d = abs($r2 - $r1) + abs($g2 - $g1) + abs($b2 - $b1); if (($idx == -1) || ($d < $dif)) { $idx = $i; $dif = $d; } } return $idx; } }