phpfspot

<?php

/***************************************************************************

 *

 * phpfspot, presents your F-Spot photo collection in Web browsers.

 *

 * Copyright (c) by Andreas Unterkircher

 *

 *  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 2 of the License, or

 *  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, write to the Free Software

 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 *

 ***************************************************************************/

require_once "phpfspot.class.php";

/**

 * PHPFSPOT_IMG class

 *

 * handles phpfspot's photos. It will output either the photo binaries

 * or can also show error messages as a on-the-fly generated picture.

 * @package phpfspot

 */

class PHPFSPOT_IMG {

   private $db;

   private $parent;

   /**

    * PHPFSPOT_IMG class constructor

    */

   public function __construct()

   {

      $this->parent = new PHPFSPOT;

      $this->db = $this->parent->db;

   } // __construct()

   /**

    * PHPFSPOT_IMG class destructor

    */

   public function __destruct()

   {

   } // __desctruct()

   /**

    * sends the specified image to the browser

    *

    * this function will send the specified image to 

    * the client - in the specified width. it also try's

    * to create on-the-fly missing thumbnails via PHPFSPOT

    * gen_thumbs function.

    * @param integer $idx

    * @param integer $width

    */

   public function showImg($idx, $width = 0, $version = NULL)

   {

      if($idx == 'rand')

         $idx = $this->parent->get_random_photo();

      /* display the lastest available version, if a wrong version has been requested */

      if(!isset($version) || !$this->parent->is_valid_version($idx, $version))

         $version = $this->parent->get_latest_version($idx);

      $details = $this->parent->get_photo_details($idx, $version);

      if(!$details) {

         $this->parent->showTextImage("The image (". $idx .") you requested is unknown");

         return;

      }

      /* no width specified - show photo in its original size */

      if($width == 0) {

         $fullpath = $this->parent->translate_path($this->parent->parse_uri($details['uri'], 'fullpath'));

      }

      /* show thumbnail */

      else {

         if(!$this->parent->is_valid_width($width)) {

            $this->parent->showTextImage("Requested width ". $width ."px is not valid!");

            return;

         }

         /* check for an entry if we already handled this photo before. If not,

            create a thumbnail for it.

         */

         if(!$this->parent->getMD5($idx)) {

            $this->parent->gen_thumb($idx);

         }

         /* get the full filesystem path to the thumbnail */

         $fullpath = $this->parent->get_thumb_path($width, $idx, $version);

         /* if the thumb file does not exist, create it */

         if(!file_exists($fullpath)) {

            $this->parent->gen_thumb($idx);

         }

      }

      if(!file_exists($fullpath)) {

         $this->parent->showTextImage("File ". basename($fullpath) ." does not exist");

         return;

      }

      if(!is_readable($fullpath)) {

         $this->parent->showTextImage("File ". basename($fullpath) ." is not readable. Check the permissions");

         return;

      } 

      $mime = $this->parent->get_mime_info($fullpath);

      if(!$this->parent->checkifImageSupported($mime)) {

         $this->parent->showTextImage("Unsupported Image Type");

         return;

      }

      Header("Content-Type: ". $mime);

      Header("Content-Length: ". filesize($fullpath));

      Header("Content-Transfer-Encoding: binary\n");

      Header("Content-Disposition: inline; filename=\"". $this->parent->parse_uri($details['uri'], 'filename') ."\"");

      Header("Content-Description: ". $this->parent->parse_uri($details['uri'], 'filename'));

      Header("Accept-Ranges: bytes");

      Header("Connection: close");

      Header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");

      Header("Cache-Control: no-cache");

      Header("Pragma: no-cache");

      $file = fopen($fullpath, "rb");

      fpassthru($file);

      @fclose($file);

   } // showImg()

   /**

    * sends a random photo of the requested tag to the browser

    *

    * this function will send a random photo to the client.

    * It is selected out by the provided $tagidx. It also try's

    * to create on-the-fly missing thumbnails via PHPFSPOT

    * gen_thumbs function.

    * @param integer $idx

    */

   public function showTagImg($tagidx)

   {

      $idx = $this->parent->get_random_tag_photo($tagidx);

      $width = 30;

      $details = $this->parent->get_photo_details($idx);

      if(!$details) {

         $this->parent->showTextImage("The image (". $idx .") you requested is unknown");

         return;

      }

      /* if no entry for this photo is yet in the database, create thumb */

      if(!$this->parent->getMD5($idx)) {

         $this->parent->gen_thumb($idx);

      }

      $version = $this->parent->get_latest_version($idx);

      $fullpath = $this->parent->get_thumb_path($width, $idx, $version);

      /* if the thumb file does not exist, create it */

      if(!file_exists($fullpath)) {

         $this->parent->gen_thumb($idx);

      }

      if(!file_exists($fullpath)) {

         $this->parent->showTextImage("File ". basename($fullpath) ." does not exist");

         return;

      }

      if(!is_readable($fullpath)) {

         $this->parent->showTextImage("File ". basename($fullpath) ." is not readable. Check the permissions");

         return;

      }

      $mime = $this->parent->get_mime_info($fullpath);

      if(!$this->parent->checkifImageSupported($mime)) {

         $this->parent->showTextImage("Unsupported Image Type");

         return;

      }

      Header("Content-Type: ". $mime);

      Header("Content-Length: ". filesize($fullpath));

      Header("Content-Transfer-Encoding: binary\n");

      Header("Content-Disposition: inline; filename=\"". $this->parent->parse_uri($details['uri'], 'filename') ."\"");

      Header("Content-Description: ". $this->parent->parse_uri($details['uri'], 'filename'));

      Header("Accept-Ranges: bytes");

      Header("Connection: close");

      Header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");

      Header("Cache-Control: no-cache");

      Header("Pragma: no-cache");

      $file = fopen($fullpath, "rb");

      fpassthru($file);

      @fclose($file);

   } // showTagImg()

} // PHPFSPOT_IMG()

if(isset($_GET['idx']) && (is_numeric($_GET['idx']) || $_GET['idx'] == 'rand')) {

   $img = new PHPFSPOT_IMG;

   if(isset($_GET['width']) && is_numeric($_GET['width'])) 

      $width = $_GET['width'];

   else

      $width = NULL;

   if(isset($_GET['version']) && is_numeric($_GET['version']))

      $version = $_GET['version'];

   else

      $version = NULL;

   $img->showImg($_GET['idx'], $width, $version);

   exit(0);

}

if(isset($_GET['tagidx']) && is_numeric($_GET['tagidx'])) {

   $img = new PHPFSPOT_IMG;

   $img->showTagImg($_GET['tagidx']);

   exit(0);

}

?>