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images.inc.php
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images.inc.php
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<?php
/*
* 2007-2011 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
* @author PrestaShop SA <[email protected]>
* @copyright 2007-2011 PrestaShop SA
* @version Release: $Revision: 7040 $
* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
* International Registered Trademark & Property of PrestaShop SA
*/
/**
* Generate a cached thumbnail for object lists (eg. carrier, order states...etc)
*
* @param string $image Real image filename
* @param string $cacheImage Cached filename
* @param integer $size Desired size
* @param string $imageType Image type
* @param boolean $disableCache When turned on a timestamp will be added to the image URI to disable the HTTP cache
*/
function cacheImage($image, $cacheImage, $size, $imageType = 'jpg', $disableCache = false)
{
if (file_exists($image))
{
if (!file_exists(_PS_TMP_IMG_DIR_.$cacheImage))
{
$memory_limit = ini_get('memory_limit');
// memory_limit == -1 => unlimited memory
if ((int)$memory_limit != -1)
{
if (preg_match('/[0-9]+k/i', $memory_limit))
$memory_limit = 1024 * (int)$memory_limit;
elseif (preg_match('/[0-9]+m/i', $memory_limit))
$memory_limit = 1024 * 1024 * (int)$memory_limit;
elseif (preg_match('/[0-9]+g/i', $memory_limit))
$memory_limit = 1024 * 1024 * 1024 * (int)$memory_limit;
$current_memory = memory_get_usage();
$infos = getimagesize($image);
// Evaluate the memory required to resize the image: if it's too much, you can't resize it.
if (($infos[0] * $infos[1] * $infos['bits'] * ($infos['channels'] / 8) + pow(2, 16)) * 1.8 + $current_memory > $memory_limit - 1024 * 1024)
return false;
}
$imageGd = ($imageType == 'gif' ? imagecreatefromgif($image) : imagecreatefromjpeg($image));
$x = imagesx($imageGd);
$y = imagesy($imageGd);
$max_x = ((int)$size)*3;
/* Size is already ok */
if ($y < $size && $x <= $max_x )
copy($image, _PS_TMP_IMG_DIR_.$cacheImage);
/* We need to resize */
else
{
$ratioX = $x / ($y / $size);
if($ratioX > $max_x)
{
$ratioX = $max_x;
$size = $y / ($x / $max_x);
}
$newImage = ($imageType == 'gif' ? imagecreate($ratioX, $size) : imagecreatetruecolor($ratioX, $size));
/* Allow to keep nice look even if resized */
$white = imagecolorallocate($newImage, 255, 255, 255);
imagefill($newImage, 0, 0, $white);
imagecopyresampled($newImage, $imageGd, 0, 0, 0, 0, $ratioX, $size, $x, $y);
imagecolortransparent($newImage, $white);
/* Quality alteration and image creation */
if ($imageType == 'gif')
imagegif($newImage, _PS_TMP_IMG_DIR_.$cacheImage);
else
imagejpeg($newImage, _PS_TMP_IMG_DIR_.$cacheImage, 86);
}
}
return '<img src="'._PS_TMP_IMG_.$cacheImage.($disableCache ? '?time='.time() : '').'" alt="" class="imgm" />';
}
return '';
}
/**
* Check image upload
*
* @param array $file Upload $_FILE value
* @param integer $maxFileSize Maximum upload size
*/
function checkImage($file, $maxFileSize)
{
if ($file['size'] > $maxFileSize)
return Tools::displayError('Image is too large').' ('.($file['size'] / 1000).Tools::displayError('KB').'). '.Tools::displayError('Maximum allowed:').' '.($maxFileSize / 1000).Tools::displayError('KB');
if (!isPicture($file))
return Tools::displayError('Image format not recognized, allowed formats are: .gif, .jpg, .png');
if ($file['error'])
return Tools::displayError('Error while uploading image; please change your server\'s settings.').'('.Tools::displayError('Error code: ').$file['error'].')';
return false;
}
function checkImageUploadError($file)
{
if ($file['error'])
{
switch ($file['error'])
{
case 1:
return Tools::displayError('The file is too large.');
break;
case 2:
return Tools::displayError('The file is too large.');
break;
case 3:
return Tools::displayError('The file was partialy uploaded');
break;
case 4:
return Tools::displayError('The file is empty');
break;
}
}
}
/**
* Check image MIME type
*
* @param string $file $_FILE of the current file
* @param array $types Allowed MIME types
*/
function isPicture($file, $types = NULL)
{
/* Detect mime content type */
$mimeType = false;
if (!$types)
$types = array('image/gif', 'image/jpg', 'image/jpeg', 'image/pjpeg', 'image/png', 'image/x-png');
/* Try 4 different methods to determine the mime type */
if (function_exists('finfo_open'))
{
$const = defined('FILEINFO_MIME_TYPE') ? FILEINFO_MIME_TYPE : FILEINFO_MIME;
$finfo = finfo_open($const);
$mimeType = finfo_file($finfo, $file['tmp_name']);
finfo_close($finfo);
}
elseif (function_exists('mime_content_type'))
$mimeType = mime_content_type($file['tmp_name']);
elseif (function_exists('exec'))
{
$mimeType = trim(exec('file -b --mime-type '.escapeshellarg($file['tmp_name'])));
if (!$mimeType)
$mimeType = trim(exec('file --mime '.escapeshellarg($file['tmp_name'])));
if (!$mimeType)
$mimeType = trim(exec('file -bi '.escapeshellarg($file['tmp_name'])));
}
if (empty($mimeType) OR $mimeType == 'regular file' OR $mimeType == 'text/plain')
$mimeType = $file['type'];
/* For each allowed MIME type, we are looking for it inside the current MIME type */
foreach ($types AS $type)
if (strstr($mimeType, $type))
return true;
return false;
}
/**
* Check icon upload
*
* @param array $file Upload $_FILE value
* @param integer $maxFileSize Maximum upload size
*/
function checkIco($file, $maxFileSize)
{
if ($file['size'] > $maxFileSize)
return Tools::displayError('Image is too large').' ('.($file['size'] / 1000).'ko). '.Tools::displayError('Maximum allowed:').' '.($maxFileSize / 1000).'ko';
if (substr($file['name'], -4) != '.ico')
return Tools::displayError('Image format not recognized, allowed formats are: .ico');
if ($file['error'])
return Tools::displayError('Error while uploading image; please change your server\'s settings.');
return false;
}
/**
* Resize, cut and optimize image
*
* @param array $sourceFile Image object from $_FILE
* @param string $destFile Destination filename
* @param integer $destWidth Desired width (optional)
* @param integer $destHeight Desired height (optional)
*
* @return boolean Operation result
*/
function imageResize($sourceFile, $destFile, $destWidth = NULL, $destHeight = NULL, $fileType = 'jpg')
{
list($sourceWidth, $sourceHeight, $type, $attr) = getimagesize($sourceFile);
if (!$sourceWidth)
return false;
if ($destWidth == NULL) $destWidth = $sourceWidth;
if ($destHeight == NULL) $destHeight = $sourceHeight;
$sourceImage = createSrcImage($type, $sourceFile);
$widthDiff = $destWidth / $sourceWidth;
$heightDiff = $destHeight / $sourceHeight;
if ($widthDiff > 1 AND $heightDiff > 1)
{
$nextWidth = $sourceWidth;
$nextHeight = $sourceHeight;
}
else
{
if (Configuration::get('PS_IMAGE_GENERATION_METHOD') == 2 OR (!Configuration::get('PS_IMAGE_GENERATION_METHOD') AND $widthDiff > $heightDiff))
{
$nextHeight = $destHeight;
$nextWidth = round(($sourceWidth * $nextHeight) / $sourceHeight);
$destWidth = (int)(!Configuration::get('PS_IMAGE_GENERATION_METHOD') ? $destWidth : $nextWidth);
}
else
{
$nextWidth = $destWidth;
$nextHeight = round($sourceHeight * $destWidth / $sourceWidth);
$destHeight = (int)(!Configuration::get('PS_IMAGE_GENERATION_METHOD') ? $destHeight : $nextHeight);
}
}
$destImage = imagecreatetruecolor($destWidth, $destHeight);
$white = imagecolorallocate($destImage, 255, 255, 255);
imagefilledrectangle ($destImage, 0, 0, $destWidth, $destHeight, $white);
imagecopyresampled($destImage, $sourceImage, (int)(($destWidth - $nextWidth) / 2), (int)(($destHeight - $nextHeight) / 2), 0, 0, $nextWidth, $nextHeight, $sourceWidth, $sourceHeight);
imagecolortransparent($destImage, $white);
return (returnDestImage($fileType, $destImage, $destFile));
}
/**
* Cut image
*
* @param array $srcFile Image object from $_FILE
* @param string $destFile Destination filename
* @param integer $destWidth Desired width (optional)
* @param integer $destHeight Desired height (optional)
*
* @return boolean Operation result
*/
function imageCut($srcFile, $destFile, $destWidth = NULL, $destHeight = NULL, $fileType = 'jpg', $destX = 0, $destY = 0)
{
if (!isset($srcFile['tmp_name']) OR !file_exists($srcFile['tmp_name']))
return false;
// Source infos
$srcInfos = getimagesize($srcFile['tmp_name']);
$src['width'] = $srcInfos[0];
$src['height'] = $srcInfos[1];
$src['ressource'] = createSrcImage($srcInfos[2], $srcFile['tmp_name']);
// Destination infos
$dest['x'] = $destX;
$dest['y'] = $destY;
$dest['width'] = $destWidth != NULL ? $destWidth : $src['width'];
$dest['height'] = $destHeight != NULL ? $destHeight : $src['height'];
$dest['ressource'] = createDestImage($dest['width'], $dest['height']);
$white = imagecolorallocate($dest['ressource'], 255, 255, 255);
imagecopyresampled($dest['ressource'], $src['ressource'], 0, 0, $dest['x'], $dest['y'], $dest['width'], $dest['height'], $dest['width'], $dest['height']);
imagecolortransparent($dest['ressource'], $white);
$return = returnDestImage($fileType, $dest['ressource'], $destFile);
return ($return);
}
function createSrcImage($type, $filename)
{
switch ($type)
{
case 1:
return imagecreatefromgif($filename);
break;
case 3:
return imagecreatefrompng($filename);
break;
case 2:
default:
return imagecreatefromjpeg($filename);
break;
}
}
function createDestImage($width, $height)
{
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
imagefill($image, 0, 0, $white);
return $image;
}
function returnDestImage($type, $ressource, $filename)
{
$flag = false;
switch ($type)
{
case 'gif':
$flag = imagegif($ressource, $filename);
break;
case 'png':
$flag = imagepng($ressource, $filename, 7);
break;
case 'jpeg':
default:
$flag = imagejpeg($ressource, $filename, 90);
break;
}
imagedestroy($ressource);
@chmod($filename, 0664);
return $flag;
}
/**
* Delete product or category image
*
* @param integer $id_item Product or category id
* @param integer $id_image Image id
* TODO This function will soon be deprecated.
*/
function deleteImage($id_item, $id_image = NULL)
{
// Category
if (!$id_image)
{
$path = _PS_CAT_IMG_DIR_;
$table = 'category';
if (file_exists(_PS_TMP_IMG_DIR_.$table.'_'.$id_item.'.jpg'))
unlink(_PS_TMP_IMG_DIR_.$table.'_'.$id_item.'.jpg');
if (!$id_image AND file_exists($path.$id_item.'.jpg'))
unlink($path.$id_item.'.jpg');
/* Auto-generated images */
$imagesTypes = ImageType::getImagesTypes();
foreach ($imagesTypes AS $k => $imagesType)
if (file_exists($path.$id_item.'-'.$imagesType['name'].'.jpg'))
unlink($path.$id_item.'-'.$imagesType['name'].'.jpg');
}else // Product
{
$path = _PS_PROD_IMG_DIR_;
$table = 'product';
$image = new Image($id_image);
$image->id_product = $id_item;
if (file_exists($path.$image->getExistingImgPath().'.jpg'))
unlink($path.$image->getExistingImgPath().'.jpg');
/* Auto-generated images */
$imagesTypes = ImageType::getImagesTypes();
foreach ($imagesTypes AS $k => $imagesType)
if (file_exists($path.$image->getExistingImgPath().'-'.$imagesType['name'].'.jpg'))
unlink($path.$image->getExistingImgPath().'-'.$imagesType['name'].'.jpg');
}
/* BO "mini" image */
if (file_exists(_PS_TMP_IMG_DIR_.$table.'_mini_'.$id_item.'.jpg'))
unlink(_PS_TMP_IMG_DIR_.$table.'_mini_'.$id_item.'.jpg');
return true;
}