source: trunk/plugins/ImageManager/thumbs.php @ 795

<?php
/**
 * On the fly Thumbnail generation.
 * Creates thumbnails given by thumbs.php?img=/relative/path/to/image.jpg
 * relative to the base_dir given in config.inc.php
 * @author $Author$
 * @version $Id$
 * @package ImageManager
 */

require_once('config.inc.php');
require_once('Classes/ImageManager.php');
require_once('Classes/Thumbnail.php');

//check for img parameter in the url
if(!isset($_GET['img']))
        {
        exit();
        }


$manager = new ImageManager($IMConfig);

//get the image and the full path to the image
$image = rawurldecode($_GET['img']);
$fullpath = Files::makeFile($manager->getImagesDir(),$image);

//not a file, so exit
if(!is_file($fullpath))
        {
        exit();
        }

$imgInfo = @getImageSize($fullpath);

//Not an image, send default thumbnail
if(!is_array($imgInfo))
{
        //show the default image, otherwise we quit!
        $default = $manager->getDefaultThumb();
        if($default)
        {
                header('Location: '.$default);
                exit();
        }
}
//if the image is less than the thumbnail dimensions
//send the original image as thumbnail

if ($imgInfo[0] <= $IMConfig['thumbnail_width']
 && $imgInfo[1] <= $IMConfig['thumbnail_height'])
 {

         header('Location: '. $manager->getFileURL($image));
         exit();
 }

//Check for thumbnails
$thumbnail = $manager->getThumbName($fullpath);

if(is_file($thumbnail))
{
        //if the thumbnail is newer, send it
        if(filemtime($thumbnail) >= filemtime($fullpath))
        {
                header('Location: '.$manager->getThumbURL($image));
                exit();
        }
}

//creating thumbnails
$thumbnailer = new Thumbnail($IMConfig['thumbnail_width'],$IMConfig['thumbnail_height']);
$thumbnailer->createThumbnail($fullpath, $thumbnail);

//Check for NEW thumbnails
if(is_file($thumbnail))
{
        //send the new thumbnail
        header('Location: '.$manager->getThumbURL($image));
        exit();
}
else
{
        //show the default image, otherwise we quit!
        $default = $manager->getDefaultThumb();

        if($default)
                header('Location: '.$default);
}
?>