mods/photos/albums.php

   1 <?php
   2 /***********************************************************************/
   3 /* ATutor                                                                                                                          */
   4 /***********************************************************************/
   5 /* Copyright (c) 2002-2009                                                                                         */
   6 /* Adaptive Technology Resource Centre / Inclusive Design Institution  */
   7 /* http://atutor.ca                                                                                                        */
   8 /*                                                                                                                                         */
   9 /* This program is free software. You can redistribute it and/or           */
  10 /* modify it under the terms of the GNU General Public License             */
  11 /* as published by the Free Software Foundation.                                           */
  12 /***********************************************************************/
  13 // $Id$
  14 $_user_location = 'public';
  15 define('AT_INCLUDE_PATH', '../../include/');
  16 require (AT_INCLUDE_PATH.'vitals.inc.php');
  17 include (AT_PA_INCLUDE.'classes/PhotoAlbum.class.php');
  18 include (AT_PA_INCLUDE.'classes/SimpleImage.class.php');
  19 include (AT_PA_INCLUDE.'lib.inc.php');
  20 include (AT_PA_INCLUDE.'classes/AjaxMessage.class.php');
  21 $_custom_css = $_base_path . AT_PA_BASENAME . 'module.css'; // use a custom stylesheet
  22 $_custom_head .= '<script src="'.$_base_path . AT_PA_BASENAME . 'include/ajaxupload.js" type="text/javascript"></script>';
  23
  24 $id = intval($_REQUEST['id']);
  25 $pa = new PhotoAlbum($id);
  26 $info = $pa->getAlbumInfo();
  27 $action_permission = $pa->checkAlbumPriv($_SESSION['member_id']);
  28
  29 //TODO: Validate users, using permission and course album control.
  30 if ($info['member_id'] != $_SESSION['member_id']){
  31         $visible_albums = $pa->getAlbums($_SESSION['member_id'], $info['type_id']);
  32         if(!isset($visible_albums[$id]) && $info['permission']==AT_PA_PRIVATE_ALBUM){
  33                 //TODO msg;
  34                 $msg->addError("ACCESS_DENIED");
  35                 header('location: index.php');
  36                 exit;
  37         }
  38 }
  39
  40 //Set pages/submenu
  41 $_pages[AT_PA_BASENAME.'index.php']['children'] = array(AT_PA_BASENAME.'albums.php');
  42
  43 $_pages[AT_PA_BASENAME.'albums.php']['title']    = _AT('pa_albums') .' - '.$info['name'];
  44 if ($info['type_id']==AT_PA_TYPE_MY_ALBUM){
  45         $_pages[AT_PA_BASENAME.'albums.php']['parent']    = AT_PA_BASENAME.'index.php';
  46 } elseif ($info['type_id']==AT_PA_TYPE_COURSE_ALBUM){
  47         $_pages[AT_PA_BASENAME.'albums.php']['parent']    = AT_PA_BASENAME.'course_albums.php';
  48 }
  49 //if this member has the permission to edit the album, show the edit/organize menu
  50 if ($action_permission){
  51         $_pages[AT_PA_BASENAME.'albums.php']['children']  = array(
  52                                                                                                                         AT_PA_BASENAME.'edit_photos.php?aid='.$id,
  53                                                                                                                         AT_PA_BASENAME.'edit_photos.php?aid='.$id.SEP.'org=1',
  54                                                                                                                 );
  55         $_pages[AT_PA_BASENAME.'edit_photos.php?aid='.$id]['title_var'] = 'pa_edit_photos';
  56         $_pages[AT_PA_BASENAME.'edit_photos.php?aid='.$id]['parent'] = AT_PA_BASENAME.'albums.php';
  57         $_pages[AT_PA_BASENAME.'edit_photos.php?aid='.$id.SEP.'org=1']['title_var'] = 'pa_organize_photos';
  58         $_pages[AT_PA_BASENAME.'edit_photos.php?aid='.$id.SEP.'org=1']['parent'] = AT_PA_BASENAME.'albums.php';
  59 }
  60
  61 //TODO: handle add_photo
  62 if(isset($_POST['upload'])){
  63         //check file size, filename, and extension
  64         $_FILES['photo'] = checkPhoto($_FILES['photo']);
  65         if ($_FILES['photo']===false || (!$action_permission && $info['type_id']!=AT_PA_TYPE_COURSE_ALBUM)){
  66                 //owner and course members can upload pictures.  Not edit though.
  67                 echo json_encode(array(
  68                                                 'aid'=>$id,
  69                                                 'pid'=>-1,
  70                                                 'msg'=>htmlentities($msg->printErrors()),
  71                                                 'error'=>true));
  72                 exit;
  73         }
  74
  75         //computer album folder name and photo filename, if exist, shift bits
  76         //goal: generate a random yet computable file structure to disallow
  77         //              users to browse through others' photos through URLs.
  78         $album_file_path = getAlbumFilePath($id, $info['created_date']);
  79         $album_file_path_tn = $album_file_path.'_tn'.DIRECTORY_SEPARATOR;
  80         $album_file_path .= DIRECTORY_SEPARATOR;
  81
  82         if (!is_dir(AT_PA_CONTENT_DIR.$album_file_path)){
  83                 mkdir(AT_PA_CONTENT_DIR.$album_file_path);
  84         }
  85         if (!is_dir(AT_PA_CONTENT_DIR.$album_file_path_tn)){
  86                 mkdir(AT_PA_CONTENT_DIR.$album_file_path_tn);
  87         }
  88
  89         //add the photo
  90         $result = $pa->addPhoto($_FILES['photo']['name'], $_POST['photo_comment'], $_SESSION['member_id']);
  91         if ($result===FALSE){
  92                 $msg->addError('PA_ADD_PHOTO_FAILED');
  93         }
  94
  95         if (!$msg->containsErrors()){
  96                 //get photo filepath
  97                 $added_photo_id = mysql_insert_id();
  98                 $photo_info = $pa->getPhotoInfo($added_photo_id);
  99                 $photo_file_path = getPhotoFilePath($added_photo_id, $_FILES['photo']['name'], $photo_info['created_date']);
 100
 101                 //resize images to a specific size, and its thumbnail
 102                 $si = new SimpleImage();
 103                 $si->load($_FILES['photo']['tmp_name']);
 104                 $image_w = $si->getWidth();
 105                 $image_h = $si->getHeight();
 106
 107                 //picture is horizontal
 108                 if($image_w > $image_h){
 109                         //don't stretch images
 110                         if ($image_w > AT_PA_IMAGE){
 111                                 $si->resizeToWidth(AT_PA_IMAGE);
 112                                 $si->save(AT_PA_CONTENT_DIR.$album_file_path.$photo_file_path);
 113                         } else {
 114                                 move_uploaded_file($_FILES['photo']['tmp_name'], AT_PA_CONTENT_DIR.$album_file_path.$photo_file_path);
 115                         }
 116                         $si->resizeToWidth(AT_PA_IMAGE_THUMB);
 117                         $si->save(AT_PA_CONTENT_DIR.$album_file_path_tn.$photo_file_path);
 118                 } else {
 119                         if ($image_h > AT_PA_IMAGE){
 120                                 $si->resizeToHeight(AT_PA_IMAGE);
 121                                 $si->save(AT_PA_CONTENT_DIR.$album_file_path.$photo_file_path);
 122                         } else {
 123                                 move_uploaded_file($_FILES['photo']['tmp_name'], AT_PA_CONTENT_DIR.$album_file_path.$photo_file_path);
 124                         }
 125                         $si->resizeToHeight(AT_PA_IMAGE_THUMB);
 126                         $si->save(AT_PA_CONTENT_DIR.$album_file_path_tn.$photo_file_path);
 127                 }
 128                 if ($_POST['upload'] == 'ajax'){
 129                         $photo_file_hash = getPhotoFilePath($added_photo_id, '', $photo_info['created_date']);
 130                         //return JSON, relying on jQuery to convert entries to html entities.
 131                         echo json_encode(array(
 132                                                 'aid'=>$id,
 133                                                 'pid'=>$added_photo_id,
 134                                                 'ph'=>$photo_file_hash,
 135                                                 'size'=>number_format(filesize(AT_PA_CONTENT_DIR.$album_file_path.$photo_file_path)/1024, 2),
 136                                                 'title'=>$photo_info['title'],
 137                                                 'alt'=>$photo_info['alt']));
 138                         $msg->addFeedback('ACTION_COMPLETED_SUCCESSFULLY');
 139                         exit;
 140                 }
 141         } //if msg contain error
 142         header('location: albums.php?id='.$id);
 143         exit;
 144 }
 145
 146 //paginator settings
 147 $page = intval($_GET['p']);
 148 $photos_count = sizeof($pa->getAlbumPhotos());
 149 $last_page = ceil($photos_count/AT_PA_PHOTOS_PER_PAGE);
 150
 151 if (!$page || $page < 0) {
 152         $page = 1;
 153 } elseif ($page > $last_page){
 154         $page = $last_page;
 155 }
 156
 157 $count  = (($page-1) * AT_PA_PHOTOS_PER_PAGE) + 1;
 158 $offset = ($page-1) * AT_PA_PHOTOS_PER_PAGE;
 159
 160 //get details
 161 $photos = $pa->getAlbumPhotos($offset);
 162 $comments = $pa->getComments($id, false);
 163 //TODO: Can improve performance by adding this to a session variable
 164 $memory_usage = memoryUsage($_SESSION['member_id']);
 165
 166 include (AT_INCLUDE_PATH.'header.inc.php');
 167 $savant->assign('album_info', $info);
 168 $savant->assign('photos', $photos);
 169 $savant->assign('comments', $comments);
 170 $savant->assign('page', $page);
 171 $savant->assign('num_rows', $photos_count);
 172 $savant->assign('memory_usage', $memory_usage/(1024*1024));     //mb
 173 $savant->assign('allowable_memory_usage', $_config['pa_max_memory_per_member']);        //mb
 174 $savant->assign('action_permission', $action_permission);
 175 $savant->display('pa_albums.tmpl.php');
 176 include (AT_INCLUDE_PATH.'footer.inc.php');
 177 ?>