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<?php |
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namespace tinymeng\code\Gateways\barcode\drawer; |
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/** |
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*-------------------------------------------------------------------- |
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* |
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* Image Class to draw JPG images with possibility to set DPI |
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* |
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*-------------------------------------------------------------------- |
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* Copyright (C) Jean-Sebastien Goupil |
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* http://www.barcodephp.com |
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*/ |
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if (!function_exists('file_put_contents')) { |
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function file_put_contents($filename, $data) { |
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$f = @fopen($filename, 'w'); |
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if (!$f) { |
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return false; |
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} else { |
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$bytes = fwrite($f, $data); |
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fclose($f); |
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return $bytes; |
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} |
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} |
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} |
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class BCGDrawJPG extends BCGDraw { |
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private $dpi; |
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private $quality; |
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/** |
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* Constructor. |
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* |
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* @param resource $im |
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*/ |
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public function __construct($im) { |
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parent::__construct($im); |
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} |
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/** |
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* Sets the DPI. |
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* |
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* @param int $dpi |
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*/ |
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public function setDPI($dpi) { |
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if(is_int($dpi)) { |
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$this->dpi = max(1, $dpi); |
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} else { |
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$this->dpi = null; |
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} |
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} |
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/** |
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* Sets the quality of the JPG. |
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* |
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* @param int $quality |
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*/ |
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public function setQuality($quality) { |
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$this->quality = $quality; |
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} |
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/** |
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* Draws the JPG on the screen or in a file. |
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*/ |
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public function draw() { |
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ob_start(); |
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imagejpeg($this->im, null, $this->quality); |
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$bin = ob_get_contents(); |
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ob_end_clean(); |
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$this->setInternalProperties($bin); |
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if (empty($this->filename)) { |
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echo $bin; |
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} else { |
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file_put_contents($this->filename, $bin); |
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} |
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} |
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private function setInternalProperties(&$bin) { |
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$this->internalSetDPI($bin); |
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$this->internalSetC($bin); |
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} |
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private function internalSetDPI(&$bin) { |
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if ($this->dpi !== null) { |
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$bin = substr_replace($bin, pack("Cnn", 0x01, $this->dpi, $this->dpi), 13, 5); |
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} |
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} |
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private function internalSetC(&$bin) { |
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if(strcmp(substr($bin, 0, 4), pack('H*', 'FFD8FFE0')) === 0) { |
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$offset = 4 + (ord($bin[4]) << 8 | ord($bin[5])); |
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$firstPart = substr($bin, 0, $offset); |
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$secondPart = substr($bin, $offset); |
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$cr = pack('H*', 'FFFE004447656E657261746564207769746820426172636F64652047656E657261746F7220666F722050485020687474703A2F2F7777772E626172636F64657068702E636F6D'); |
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$bin = $firstPart; |
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$bin .= $cr; |
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$bin .= $secondPart; |
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} |
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} |
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} |
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?> |
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majiameng /
QrCode-php
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