include/validations/photos.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2007 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         $this->_get_image($_data);
  49     }
  50
  51     // }}}
  52     // {{{ function _get_image()
  53
  54     function _get_image($_data)
  55     {
  56         global $page;
  57
  58         VarStream::init();
  59
  60         // calcul de la taille de l'image
  61         $GLOBALS['photoreq'] = $_data;
  62         $image_infos = getimagesize('var://photoreq');
  63         unset ($GLOBALS['photoreq']);
  64
  65         if (empty($image_infos)) {
  66             $page->trig("Image invalide");
  67             return false;
  68         }
  69         list($this->x, $this->y, $this->mimetype) = $image_infos;
  70
  71         switch ($this->mimetype) {
  72             case 1: $this->mimetype = "gif";    break;
  73             case 2: $this->mimetype = "jpeg";   break;
  74             case 3: $this->mimetype = "png";    break;
  75             default:
  76                 $page->trig("Type d'image invalide");
  77                 return false;
  78         }
  79
  80         if (strlen($_data) > SIZE_MAX)  {
  81             $img = imagecreatefromstring($_data);
  82             if (!$img) {
  83                 $page->trig("image trop grande et impossible à retailler automatiquement");
  84                 return false;
  85             }
  86
  87             $nx = $x = imagesx($img);
  88             $ny = $y = imagesy($img);
  89
  90             if ($nx > 240) { $ny = intval($ny*240/$nx); $nx = 240; }
  91             if ($ny > 300) { $ny = intval($nx*300/$nx); $ny = 300; }
  92             if ($nx < 160) { $ny = intval($ny*160/$nx); $nx = 160; }
  93
  94             $comp = '90';
  95             $file = tempnam('/tmp', 'photo');
  96
  97             while (strlen($_data) > SIZE_MAX) {
  98                 $img2  = imagecreatetruecolor($nx, $ny);
  99                 imagecopyresampled($img2, $img, 0, 0, 0, 0, $nx, $ny, $x, $y);
 100                 imagejpeg($img2, $file, $comp);
 101                 $_data = file_get_contents($file);
 102                 $this->mimetype = 'jpeg';
 103
 104                 $comp --;
 105             }
 106
 107             unlink($file);
 108         }
 109         $this->data = $_data;
 110         return true;
 111     }
 112
 113     // }}}
 114     // {{{ function get_request()
 115
 116     function get_request($uid)
 117     {
 118         return parent::get_typed_request($uid,'photo');
 119     }
 120
 121     // }}}
 122     // {{{ function formu()
 123
 124     function formu()
 125     { return 'include/form.valid.photos.tpl'; }
 126
 127     // }}}
 128     // {{{ function editor()
 129
 130     function editor()
 131     {
 132         return 'include/form.valid.edit-photo.tpl';
 133     }
 134
 135     // }}}
 136     // {{{ function handle_editor()
 137
 138     function handle_editor()
 139     {
 140         if (isset($_FILES['userfile']['tmp_name'])) {
 141             $file = $_FILES['userfile']['tmp_name'];
 142             if ($data = file_get_contents($file)) {
 143                 if ($this->_get_image($data)) {
 144                     return true;
 145                 }
 146             } else {
 147                 $page->trig('Fichier inexistant ou vide');
 148             }
 149         }
 150         return false;
 151     }
 152
 153     // }}}
 154     // {{{ function _mail_subj
 155
 156     function _mail_subj()
 157     {
 158         return "[Polytechnique.org/PHOTO] Changement de photo";
 159     }
 160
 161     // }}}
 162     // {{{ function _mail_body
 163
 164     function _mail_body($isok)
 165     {
 166         if ($isok) {
 167             return "Le changement de photo que tu as demandé vient d'être effectué.";
 168         } else {
 169             return "La demande de changement de photo que tu avais faite a été refusée.";
 170         }
 171     }
 172
 173     // }}}
 174     // {{{ function commit()
 175
 176     function commit()
 177     {
 178         XDB::execute('REPLACE INTO  photo (uid, attachmime, attach, x, y)
 179                                       VALUES  ({?},{?},{?},{?},{?})',
 180                                       $this->uid, $this->mimetype, $this->data, $this->x, $this->y);
 181         require_once('notifs.inc.php');
 182         register_watch_op($this->uid,WATCH_FICHE);
 183         return true;
 184     }
 185
 186     // }}}
 187 }
 188
 189 // }}}
 190
 191 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 192 ?>