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<?php
/* Copyright (C) 2004-2010 Laurent Destailleur <eldy@users.sourceforge.net>
* Copyright (C) 2005-2007 Regis Houssin <regis.houssin@inodbox.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* or see http://www.gnu.org/
*/
/**
* \file htdocs/core/lib/images.lib.php
* \brief Set of function for manipulating images
*/
// Define size of logo small and mini
$maxwidthsmall=270;$maxheightsmall=150;
$maxwidthmini=128;$maxheightmini=72;
$quality = 80;
/**
* Return if a filename is file name of a supported image format
*
* @param string $file Filename
* @return int -1=Not image filename, 0=Image filename but format not supported by PHP, 1=Image filename with format supported by this PHP
*/
function image_format_supported($file)
{
$regeximgext='\.gif|\.jpg|\.jpeg|\.png|\.bmp|\.xpm|\.xbm|\.svg'; // See also into product.class.php
// Case filename is not a format image
if (! preg_match('/('.$regeximgext.')$/i', $file, $reg)) return -1;
// Case filename is a format image but not supported by this PHP
$imgfonction='';
if (strtolower($reg[1]) == '.gif') $imgfonction = 'imagecreatefromgif';
if (strtolower($reg[1]) == '.png') $imgfonction = 'imagecreatefrompng';
if (strtolower($reg[1]) == '.jpg') $imgfonction = 'imagecreatefromjpeg';
if (strtolower($reg[1]) == '.jpeg') $imgfonction = 'imagecreatefromjpeg';
if (strtolower($reg[1]) == '.bmp') $imgfonction = 'imagecreatefromwbmp';
if (strtolower($reg[1]) == '.xpm') $imgfonction = 'imagecreatefromxpm';
if (strtolower($reg[1]) == '.xbm') $imgfonction = 'imagecreatefromxbm';
if ($imgfonction)
{
if (! function_exists($imgfonction))
{
// Fonctions de conversion non presente dans ce PHP
return 0;
}
}
// Filename is a format image and supported by this PHP
return 1;
}
/**
* Return size of image file on disk (Supported extensions are gif, jpg, png and bmp)
*
* @param string $file Full path name of file
* @param bool $url Image with url (true or false)
* @return array array('width'=>width, 'height'=>height)
*/
function dol_getImageSize($file, $url = false)
{
$ret=array();
if (image_format_supported($file) < 0) return $ret;
$filetoread = $file;
if (!$url)
{
$filetoread = realpath(dol_osencode($file)); // Chemin canonique absolu de l'image
}
if ($filetoread)
{
$infoImg = getimagesize($filetoread); // Recuperation des infos de l'image
$ret['width']=$infoImg[0]; // Largeur de l'image
$ret['height']=$infoImg[1]; // Hauteur de l'image
}
return $ret;
}
/**
* Resize or crop an image file (Supported extensions are gif, jpg, png and bmp)
*
* @param string $file Path of file to resize/crop
* @param int $mode 0=Resize, 1=Crop
* @param int $newWidth Largeur maximum que dois faire l'image destination (0=keep ratio)
* @param int $newHeight Hauteur maximum que dois faire l'image destination (0=keep ratio)
* @param int $src_x Position of croping image in source image (not use if mode=0)
* @param int $src_y Position of croping image in source image (not use if mode=0)
* @return string File name if OK, error message if KO
*/
function dol_imageResizeOrCrop($file, $mode, $newWidth, $newHeight, $src_x = 0, $src_y = 0)
{
require_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
global $conf,$langs;
dol_syslog("dol_imageResizeOrCrop file=".$file." mode=".$mode." newWidth=".$newWidth." newHeight=".$newHeight." src_x=".$src_x." src_y=".$src_y);
// Clean parameters
$file=trim($file);
// Check parameters
if (! $file)
{
// Si le fichier n'a pas ete indique
return 'Bad parameter file';
}
elseif (! file_exists($file))
{
// Si le fichier passe en parametre n'existe pas
return $langs->trans("ErrorFileNotFound", $file);
}
elseif(image_format_supported($file) < 0)
{
return 'This filename '.$file.' does not seem to be an image filename.';
}
elseif(!is_numeric($newWidth) && !is_numeric($newHeight))
{
return 'Wrong value for parameter newWidth or newHeight';
}
elseif ($mode == 0 && $newWidth <= 0 && $newHeight <= 0)
{
return 'At least newHeight or newWidth must be defined for resizing';
}
elseif ($mode == 1 && ($newWidth <= 0 || $newHeight <= 0))
{
return 'Both newHeight or newWidth must be defined for croping';
}
$filetoread = realpath(dol_osencode($file)); // Chemin canonique absolu de l'image
$infoImg = getimagesize($filetoread); // Recuperation des infos de l'image
$imgWidth = $infoImg[0]; // Largeur de l'image
$imgHeight = $infoImg[1]; // Hauteur de l'image
if ($mode == 0) // If resize, we check parameters
{
if ($newWidth <= 0)
{
$newWidth=intval(($newHeight / $imgHeight) * $imgWidth); // Keep ratio
}
if ($newHeight <= 0)
{
$newHeight=intval(($newWidth / $imgWidth) * $imgHeight); // Keep ratio
}
}
$imgfonction='';
switch($infoImg[2])
{
case 1: // IMG_GIF
$imgfonction = 'imagecreatefromgif';
break;
case 2: // IMG_JPG
$imgfonction = 'imagecreatefromjpeg';
break;
case 3: // IMG_PNG
$imgfonction = 'imagecreatefrompng';
break;
case 4: // IMG_WBMP
$imgfonction = 'imagecreatefromwbmp';
break;
}
if ($imgfonction)
{
if (! function_exists($imgfonction))
{
// Fonctions de conversion non presente dans ce PHP
return 'Resize not possible. This PHP does not support GD functions '.$imgfonction;
}
}
// Initialisation des variables selon l'extension de l'image
switch($infoImg[2])
{
case 1: // Gif
$img = imagecreatefromgif($filetoread);
$extImg = '.gif'; // File name extension of image
$newquality='NU'; // Quality is not used for this format
break;
case 2: // Jpg
$img = imagecreatefromjpeg($filetoread);
$extImg = '.jpg';
$newquality=100; // % quality maximum
break;
case 3: // Png
$img = imagecreatefrompng($filetoread);
$extImg = '.png';
$newquality=0; // No compression (0-9)
break;
case 4: // Bmp
$img = imagecreatefromwbmp($filetoread);
$extImg = '.bmp';
$newquality='NU'; // Quality is not used for this format
break;
}
// Create empty image
if ($infoImg[2] == 1)
{
// Compatibilite image GIF
$imgThumb = imagecreate($newWidth, $newHeight);
}
else
{
$imgThumb = imagecreatetruecolor($newWidth, $newHeight);
}
// Activate antialiasing for better quality
if (function_exists('imageantialias'))
{
imageantialias($imgThumb, true);
}
// This is to keep transparent alpha channel if exists (PHP >= 4.2)
if (function_exists('imagesavealpha'))
{
imagesavealpha($imgThumb, true);
}
// Initialisation des variables selon l'extension de l'image
switch($infoImg[2])
{
case 1: // Gif
$trans_colour = imagecolorallocate($imgThumb, 255, 255, 255); // On procede autrement pour le format GIF
imagecolortransparent($imgThumb, $trans_colour);
break;
case 2: // Jpg
$trans_colour = imagecolorallocatealpha($imgThumb, 255, 255, 255, 0);
break;
case 3: // Png
imagealphablending($imgThumb, false); // Pour compatibilite sur certain systeme
$trans_colour = imagecolorallocatealpha($imgThumb, 255, 255, 255, 127); // Keep transparent channel
break;
case 4: // Bmp
$trans_colour = imagecolorallocatealpha($imgThumb, 255, 255, 255, 0);
break;
}
if (function_exists("imagefill")) imagefill($imgThumb, 0, 0, $trans_colour);
dol_syslog("dol_imageResizeOrCrop: convert image from ($imgWidth x $imgHeight) at position ($src_x x $src_y) to ($newWidth x $newHeight) as $extImg, newquality=$newquality");
//imagecopyresized($imgThumb, $img, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $imgWidth, $imgHeight); // Insere l'image de base redimensionnee
imagecopyresampled($imgThumb, $img, 0, 0, $src_x, $src_y, $newWidth, $newHeight, ($mode==0?$imgWidth:$newWidth), ($mode==0?$imgHeight:$newHeight)); // Insere l'image de base redimensionnee
$imgThumbName = $file;
// Check if permission are ok
//$fp = fopen($imgThumbName, "w");
//fclose($fp);
// Create image on disk
switch($infoImg[2])
{
case 1: // Gif
imagegif($imgThumb, $imgThumbName);
break;
case 2: // Jpg
imagejpeg($imgThumb, $imgThumbName, $newquality);
break;
case 3: // Png
imagepng($imgThumb, $imgThumbName, $newquality);
break;
case 4: // Bmp
image2wbmp($imgThumb, $imgThumbName);
break;
}
// Set permissions on file
if (! empty($conf->global->MAIN_UMASK)) @chmod($imgThumbName, octdec($conf->global->MAIN_UMASK));
// Free memory. This does not delete image.
imagedestroy($img);
imagedestroy($imgThumb);
clearstatcache(); // File was replaced by a modified one, so we clear file caches.
return $imgThumbName;
}
/**
* dolRotateImage if image is a jpg file.
* Currently use an autodetection to know if we can rotate.
* TODO Introduce a new parameter to force rotate.
*
* @param string $file_path Full path to image to rotate
* @return boolean Success or not
*/
function dolRotateImage($file_path)
{
$exif = @exif_read_data($file_path);
if ($exif === false) {
return false;
}
$orientation = intval(@$exif['Orientation']);
if (!in_array($orientation, array(3, 6, 8))) {
return false;
}
$image = @imagecreatefromjpeg($file_path);
switch ($orientation) {
case 3:
$image = @imagerotate($image, 180, 0);
break;
case 6:
$image = @imagerotate($image, 270, 0);
break;
case 8:
$image = @imagerotate($image, 90, 0);
break;
default:
return false;
}
$success = imagejpeg($image, $file_path);
// Free up memory (imagedestroy does not delete files):
@imagedestroy($image);
return $success;
}
/**
* Create a thumbnail from an image file (Supported extensions are gif, jpg, png and bmp).
* If file is myfile.jpg, new file may be myfile_small.jpg
*
* @param string $file Path of source file to resize
* @param int $maxWidth Largeur maximum que dois faire la miniature (-1=unchanged, 160 by default)
* @param int $maxHeight Hauteur maximum que dois faire l'image (-1=unchanged, 120 by default)
* @param string $extName Extension to differenciate thumb file name ('_small', '_mini')
* @param int $quality Quality of compression (0=worst, 100=best)
* @param string $outdir Directory where to store thumb
* @param int $targetformat New format of target (IMAGETYPE_GIF, IMAGETYPE_JPG, IMAGETYPE_PNG, IMAGETYPE_BMP, IMAGETYPE_WBMP ... or 0 to keep old format)
* @return string Full path of thumb or '' if it fails or 'Error...' if it fails
*/
function vignette($file, $maxWidth = 160, $maxHeight = 120, $extName = '_small', $quality = 50, $outdir = 'thumbs', $targetformat = 0)
{
require_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
global $conf,$langs;
dol_syslog("vignette file=".$file." extName=".$extName." maxWidth=".$maxWidth." maxHeight=".$maxHeight." quality=".$quality." outdir=".$outdir." targetformat=".$targetformat);
// Clean parameters
$file=trim($file);
// Check parameters
if (! $file)
{
// Si le fichier n'a pas ete indique
return 'ErrorBadParameters';
}
elseif (! file_exists($file))
{
// Si le fichier passe en parametre n'existe pas
dol_syslog($langs->trans("ErrorFileNotFound", $file), LOG_ERR);
return $langs->trans("ErrorFileNotFound", $file);
}
elseif(image_format_supported($file) < 0)
{
dol_syslog('This file '.$file.' does not seem to be an image format file name.', LOG_WARNING);
return 'ErrorBadImageFormat';
}
elseif(!is_numeric($maxWidth) || empty($maxWidth) || $maxWidth < -1){
// Si la largeur max est incorrecte (n'est pas numerique, est vide, ou est inferieure a 0)
dol_syslog('Wrong value for parameter maxWidth', LOG_ERR);
return 'Error: Wrong value for parameter maxWidth';
}
elseif(!is_numeric($maxHeight) || empty($maxHeight) || $maxHeight < -1){
// Si la hauteur max est incorrecte (n'est pas numerique, est vide, ou est inferieure a 0)
dol_syslog('Wrong value for parameter maxHeight', LOG_ERR);
return 'Error: Wrong value for parameter maxHeight';
}
$filetoread = realpath(dol_osencode($file)); // Chemin canonique absolu de l'image
$infoImg = getimagesize($filetoread); // Recuperation des infos de l'image
$imgWidth = $infoImg[0]; // Largeur de l'image
$imgHeight = $infoImg[1]; // Hauteur de l'image
if ($maxWidth == -1) $maxWidth=$infoImg[0]; // If size is -1, we keep unchanged
if ($maxHeight == -1) $maxHeight=$infoImg[1]; // If size is -1, we keep unchanged
// Si l'image est plus petite que la largeur et la hauteur max, on ne cree pas de vignette
if ($infoImg[0] < $maxWidth && $infoImg[1] < $maxHeight)
{
// On cree toujours les vignettes
dol_syslog("File size is smaller than thumb size", LOG_DEBUG);
//return 'Le fichier '.$file.' ne necessite pas de creation de vignette';
}
$imgfonction='';
switch($infoImg[2])
{
case IMAGETYPE_GIF: // 1
$imgfonction = 'imagecreatefromgif';
break;
case IMAGETYPE_JPEG: // 2
$imgfonction = 'imagecreatefromjpeg';
break;
case IMAGETYPE_PNG: // 3
$imgfonction = 'imagecreatefrompng';
break;
case IMAGETYPE_BMP: // 6
// Not supported by PHP GD
break;
case IMAGETYPE_WBMP: // 15
$imgfonction = 'imagecreatefromwbmp';
break;
}
if ($imgfonction)
{
if (! function_exists($imgfonction))
{
// Fonctions de conversion non presente dans ce PHP
return 'Error: Creation of thumbs not possible. This PHP does not support GD function '.$imgfonction;
}
}
// On cree le repertoire contenant les vignettes
$dirthumb = dirname($file).($outdir?'/'.$outdir:''); // Chemin du dossier contenant les vignettes
dol_mkdir($dirthumb);
// Initialisation des variables selon l'extension de l'image
$img=null;
switch($infoImg[2])
{
case IMAGETYPE_GIF: // 1
$img = imagecreatefromgif($filetoread);
$extImg = '.gif'; // Extension de l'image
break;
case IMAGETYPE_JPEG: // 2
$img = imagecreatefromjpeg($filetoread);
$extImg = (preg_match('/\.jpeg$/', $file)?'.jpeg':'.jpg'); // Extension de l'image
break;
case IMAGETYPE_PNG: // 3
$img = imagecreatefrompng($filetoread);
$extImg = '.png';
break;
case IMAGETYPE_BMP: // 6
// Not supported by PHP GD
$extImg = '.bmp';
break;
case IMAGETYPE_WBMP: // 15
$img = imagecreatefromwbmp($filetoread);
$extImg = '.bmp';
break;
}
if (! is_resource($img))
{
dol_syslog('Failed to detect type of image. We found infoImg[2]='.$infoImg[2], LOG_WARNING);
return 0;
}
// Initialisation des dimensions de la vignette si elles sont superieures a l'original
if($maxWidth > $imgWidth){ $maxWidth = $imgWidth; }
if($maxHeight > $imgHeight){ $maxHeight = $imgHeight; }
$whFact = $maxWidth/$maxHeight; // Facteur largeur/hauteur des dimensions max de la vignette
$imgWhFact = $imgWidth/$imgHeight; // Facteur largeur/hauteur de l'original
// Fixe les dimensions de la vignette
if($whFact < $imgWhFact)
{
// Si largeur determinante
$thumbWidth = $maxWidth;
$thumbHeight = $thumbWidth / $imgWhFact;
}
else
{
// Si hauteur determinante
$thumbHeight = $maxHeight;
$thumbWidth = $thumbHeight * $imgWhFact;
}
$thumbHeight=round($thumbHeight);
$thumbWidth=round($thumbWidth);
// Define target format
if (empty($targetformat)) $targetformat=$infoImg[2];
// Create empty image
if ($targetformat == IMAGETYPE_GIF)
{
// Compatibilite image GIF
$imgThumb = imagecreate($thumbWidth, $thumbHeight);
}
else
{
$imgThumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
}
// Activate antialiasing for better quality
if (function_exists('imageantialias'))
{
imageantialias($imgThumb, true);
}
// This is to keep transparent alpha channel if exists (PHP >= 4.2)
if (function_exists('imagesavealpha'))
{
imagesavealpha($imgThumb, true);
}
// Initialisation des variables selon l'extension de l'image
// $targetformat is 0 by default, in such case, we keep original extension
switch($targetformat)
{
case IMAGETYPE_GIF: // 1
$trans_colour = imagecolorallocate($imgThumb, 255, 255, 255); // On procede autrement pour le format GIF
imagecolortransparent($imgThumb, $trans_colour);
$extImgTarget = '.gif';
$newquality='NU';
break;
case IMAGETYPE_JPEG: // 2
$trans_colour = imagecolorallocatealpha($imgThumb, 255, 255, 255, 0);
$extImgTarget = (preg_match('/\.jpeg$/i', $file)?'.jpeg':'.jpg');
$newquality=$quality;
break;
case IMAGETYPE_PNG: // 3
imagealphablending($imgThumb, false); // Pour compatibilite sur certain systeme
$trans_colour = imagecolorallocatealpha($imgThumb, 255, 255, 255, 127); // Keep transparent channel
$extImgTarget = '.png';
$newquality=$quality-100;
$newquality=round(abs($quality-100)*9/100);
break;
case IMAGETYPE_BMP: // 6
// Not supported by PHP GD
$extImgTarget = '.bmp';
$newquality='NU';
break;
case IMAGETYPE_WBMP: // 15
$trans_colour = imagecolorallocatealpha($imgThumb, 255, 255, 255, 0);
$extImgTarget = '.bmp';
$newquality='NU';
break;
}
if (function_exists("imagefill")) imagefill($imgThumb, 0, 0, $trans_colour);
dol_syslog("vignette: convert image from ($imgWidth x $imgHeight) to ($thumbWidth x $thumbHeight) as $extImg, newquality=$newquality");
//imagecopyresized($imgThumb, $img, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $imgWidth, $imgHeight); // Insere l'image de base redimensionnee
imagecopyresampled($imgThumb, $img, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $imgWidth, $imgHeight); // Insere l'image de base redimensionnee
$fileName = preg_replace('/(\.gif|\.jpeg|\.jpg|\.png|\.bmp)$/i', '', $file); // On enleve extension quelquesoit la casse
$fileName = basename($fileName);
//$imgThumbName = $dirthumb.'/'.getImageFileNameForSize(basename($file), $extName, $extImgTarget); // Full path of thumb file
$imgThumbName = getImageFileNameForSize($file, $extName, $extImgTarget); // Full path of thumb file
// Check if permission are ok
//$fp = fopen($imgThumbName, "w");
//fclose($fp);
// Create image on disk
switch($targetformat)
{
case IMAGETYPE_GIF: // 1
imagegif($imgThumb, $imgThumbName);
break;
case IMAGETYPE_JPEG: // 2
imagejpeg($imgThumb, $imgThumbName, $newquality);
break;
case IMAGETYPE_PNG: // 3
imagepng($imgThumb, $imgThumbName, $newquality);
break;
case IMAGETYPE_BMP: // 6
// Not supported by PHP GD
break;
case IMAGETYPE_WBMP: // 15
image2wbmp($imgThumb, $imgThumbName);
break;
}
// Set permissions on file
if (! empty($conf->global->MAIN_UMASK)) @chmod($imgThumbName, octdec($conf->global->MAIN_UMASK));
// Free memory. This does not delete image.
imagedestroy($img);
imagedestroy($imgThumb);
return $imgThumbName;
}