109 lines
2.4 KiB
PHP
109 lines
2.4 KiB
PHP
<?php
|
|
/**
|
|
* BCGDrawJPG.php
|
|
*--------------------------------------------------------------------
|
|
*
|
|
* Image Class to draw JPG images with possibility to set DPI
|
|
*
|
|
*--------------------------------------------------------------------
|
|
* Revision History
|
|
* v2.1.0 8 nov 2009 Jean-Sébastien Goupil
|
|
*--------------------------------------------------------------------
|
|
* $Id: BCGDrawJPG.php,v 1.1 2009/11/09 04:15:10 jsgoupil Exp $
|
|
* PHP5-Revision: 1.1
|
|
*--------------------------------------------------------------------
|
|
* Copyright (C) Jean-Sebastien Goupil
|
|
* http://www.barcodephp.com
|
|
*/
|
|
include_once('BCGDraw.php');
|
|
|
|
if (!function_exists('file_put_contents')) {
|
|
function file_put_contents($filename, $data) {
|
|
$f = @fopen($filename, 'w');
|
|
if (!$f) {
|
|
return false;
|
|
} else {
|
|
$bytes = fwrite($f, $data);
|
|
fclose($f);
|
|
return $bytes;
|
|
}
|
|
}
|
|
}
|
|
|
|
class BCGDrawJPG extends BCGDraw {
|
|
var $dpi;
|
|
var $quality;
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param resource $im
|
|
*/
|
|
function BCGDrawJPG(&$im) {
|
|
BCGDraw::BCGDraw($im);
|
|
}
|
|
|
|
/**
|
|
* Sets the DPI
|
|
*
|
|
* @param int $dpi
|
|
*/
|
|
function setDPI($dpi) {
|
|
if(is_int($dpi)) {
|
|
$this->dpi = max(1, $dpi);
|
|
} else {
|
|
$this->dpi = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the quality of the JPG
|
|
*
|
|
* @param int $quality
|
|
*/
|
|
function setQuality($quality) {
|
|
$this->quality = $quality;
|
|
}
|
|
|
|
/**
|
|
* Draws the JPG on the screen or in a file
|
|
*/
|
|
function draw() {
|
|
ob_start();
|
|
imagejpeg($this->im, null, $this->quality);
|
|
$bin = ob_get_contents();
|
|
ob_end_clean();
|
|
|
|
$this->setInternalProperties($bin);
|
|
|
|
if (empty($this->filename)) {
|
|
echo $bin;
|
|
} else {
|
|
file_put_contents($this->filename, $bin);
|
|
}
|
|
}
|
|
|
|
function setInternalProperties(&$bin) { // private
|
|
$this->internalSetDPI($bin);
|
|
$this->internalSetC($bin);
|
|
}
|
|
|
|
function internalSetDPI(&$bin) { // private
|
|
if($this->dpi !== null) {
|
|
$bin = substr_replace($bin, pack("Cnn", 0x01, $this->dpi, $this->dpi), 13, 5);
|
|
}
|
|
}
|
|
|
|
function internalSetC(&$bin) { // private
|
|
if(strcmp(substr($bin, 0, 4), pack('H*', 'FFD8FFE0')) === 0) {
|
|
$offset = 4 + (ord($bin[4]) << 8 | ord($bin[5]));
|
|
$firstPart = substr($bin, 0, $offset);
|
|
$secondPart = substr($bin, $offset);
|
|
$cr = pack('H*', 'FFFE004447656E657261746564207769746820426172636F64652047656E657261746F7220666F722050485020687474703A2F2F7777772E626172636F64657068702E636F6D');
|
|
$bin = $firstPart;
|
|
$bin .= $cr;
|
|
$bin .= $secondPart;
|
|
}
|
|
}
|
|
}
|
|
?>
|