include/validations/photos.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2006 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 // {{{ class PhotoReq
  23
  24 class PhotoReq extends Validate
  25 {
  26     // {{{ properties
  27
  28     var $mimetype;
  29     var $data;
  30     var $x;
  31     var $y;
  32
  33     var $unique = true;
  34
  35     var $rules = "Refuser les photos copyrightées, de mineurs, ou ayant
  36     un caractère pornographique, violent, etc... Si une photo est mal
  37     cadrée (20% de photo et 80% de blanc par exemple), si c'est un
  38     camarade antique, on lui arrange sinon on lui
  39     refuse en lui expliquant gentiment le problème. Idem si les dimensions de
  40     la photo sont archi trop grandes ou archi trop petites.";
  41
  42     // }}}
  43     // {{{ constructor
  44
  45     function PhotoReq($_uid, $_data, $_stamp=0)
  46     {
  47         $this->Validate($_uid, true, 'photo', $_stamp);
  48         if (!$this->_get_image($_data)) {
  49             return ($this = null);
  50         }
  51     }
  52
  53     // }}}
  54     // {{{ function _get_image()
  55
  56     function _get_image($_data)
  57     {
  58         global $page;
  59
  60         // calcul de la taille de l'image
  61         require_once dirname(__FILE__).'/../../classes/VarStream.php';
  62         $GLOBALS['photoreq'] = $_data;
  63         $image_infos = getimagesize('var://photoreq');
  64         unset ($GLOBALS['photoreq']);
  65
  66         if (empty($image_infos)) {
  67             $page->trig("Image invalide");
  68             return false;
  69         }
  70         list($this->x, $this->y, $this->mimetype) = $image_infos;
  71
  72         switch ($this->mimetype) {
  73             case 1: $this->mimetype = "gif";    break;
  74             case 2: $this->mimetype = "jpeg";   break;
  75             case 3: $this->mimetype = "png";    break;
  76             default:
  77                 $page->trig("Type d'image invalide");
  78                 return false;
  79         }
  80
  81         if (strlen($_data) > SIZE_MAX)  {
  82             $img = imagecreatefromstring($_data);
  83             if (!$img) {
  84                 $page->trig("image trop grande et impossible à retailler automatiquement");
  85                 return false;
  86             }
  87
  88             $nx = $x = imagesx($img);
  89             $ny = $y = imagesy($img);
  90
  91             if ($nx > 240) { $ny = intval($ny*240/$nx); $nx = 240; }
  92             if ($ny > 300) { $ny = intval($nx*300/$nx); $ny = 300; }
  93             if ($nx < 160) { $ny = intval($ny*160/$nx); $nx = 160; }
  94
  95             $comp = '90';
  96             $file = tempnam('/tmp', 'photo');
  97
  98             while (strlen($_data) > SIZE_MAX) {
  99                 $img2  = imagecreatetruecolor($nx, $ny);
 100                 imagecopyresampled($img2, $img, 0, 0, 0, 0, $nx, $ny, $x, $y);
 101                 imagejpeg($img2, $file, $comp);
 102                 $_data = file_get_contents($file);
 103                 $this->mimetype = 'jpeg';
 104
 105                 $comp --;
 106             }
 107
 108             unlink($file);
 109         }
 110         $this->data = $_data;
 111         return true;
 112     }
 113
 114     // }}}
 115     // {{{ function get_request()
 116
 117     function get_request($uid)
 118     {
 119         return parent::get_request($uid,'photo');
 120     }
 121
 122     // }}}
 123     // {{{ function formu()
 124
 125     function formu()
 126     { return 'include/form.valid.photos.tpl'; }
 127
 128     // }}}
 129     // {{{ function editor()
 130
 131     function editor()
 132     {
 133         return 'include/form.valid.edit-photo.tpl';
 134     }
 135
 136     // }}}
 137     // {{{ function handle_editor()
 138
 139     function handle_editor()
 140     {
 141         if (isset($_FILES['userfile']['tmp_name'])) {
 142             $file = $_FILES['userfile']['tmp_name'];
 143             if ($data = file_get_contents($file)) {
 144                 if ($this->_get_image($data)) {
 145                     return true;
 146                 }
 147             } else {
 148                 $page->trig('Fichier inexistant ou vide');
 149             }
 150         }
 151         return false;
 152     }
 153
 154     // }}}
 155     // {{{ function _mail_subj
 156
 157     function _mail_subj()
 158     {
 159         return "[Polytechnique.org/PHOTO] Changement de photo";
 160     }
 161
 162     // }}}
 163     // {{{ function _mail_body
 164
 165     function _mail_body($isok)
 166     {
 167         if ($isok) {
 168             return "Le changement de photo que tu as demandé vient d'être effectué.";
 169         } else {
 170             return "La demande de changement de photo que tu avais faite a été refusée.";
 171         }
 172     }
 173
 174     // }}}
 175     // {{{ function commit()
 176
 177     function commit()
 178     {
 179         XDB::execute('REPLACE INTO  photo (uid, attachmime, attach, x, y)
 180                                       VALUES  ({?},{?},{?},{?},{?})',
 181                                       $this->uid, $this->mimetype, $this->data, $this->x, $this->y);
 182         require_once('notifs.inc.php');
 183         register_watch_op($this->uid,WATCH_FICHE);
 184         return true;
 185     }
 186
 187     // }}}
 188 }
 189
 190 // }}}
 191
 192 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker:
 193 ?>