104 lines
2.7 KiB
PHP
104 lines
2.7 KiB
PHP
<?php
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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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* @author Akhtar Khan <er.akhtarkhan@gmail.com>
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* @link http://www.codeitnow.in
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* @package https://github.com/codeitnowin/barcode-generator
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*/
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namespace CodeItNow\BarcodeBundle\Generator\Drawer;
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use CodeItNow\BarcodeBundle\Generator\Drawer\CINDraw;
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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 CINDrawJPG extends CINDraw {
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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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