thumbnailer/evince-thumbnailer.c

   1 /*
   2    Copyright (C) 2005 Fernando Herrera <fherrera@onirica.com>
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17 */
  18
  19 #include <pdf-document.h>
  20
  21 #include <libgnomevfs/gnome-vfs-mime-utils.h>
  22 #include <libgnomevfs/gnome-vfs-uri.h>
  23 #include <libgnomevfs/gnome-vfs-utils.h>
  24 #include <libgnomevfs/gnome-vfs-init.h>
  25
  26 #include <ev-document.h>
  27 #include <ev-document-thumbnails.h>
  28
  29 #include <string.h>
  30
  31 #define THUMBNAIL_SIZE 128
  32
  33 static gboolean
  34 evince_thumbnail_pngenc_get (const char *uri, const char *thumbnail)
  35 {
  36         EvDocument *document = NULL;
  37         char *mime_type;
  38         GError *error;
  39         GdkPixbuf *pixbuf;
  40
  41         mime_type = gnome_vfs_get_mime_type (uri);
  42         if (mime_type == NULL)
  43                 return FALSE;
  44
  45         if (!strcmp (mime_type, "application/pdf"))
  46                 document = g_object_new (PDF_TYPE_DOCUMENT, NULL);
  47         else
  48                 return FALSE;
  49
  50         if (!ev_document_load (document, uri, &error)) {
  51                 if (error->domain == EV_DOCUMENT_ERROR &&
  52                     error->code == EV_DOCUMENT_ERROR_ENCRYPTED) {
  53                         /* FIXME: Create a thumb for cryp docs */
  54                 }
  55                 g_error_free (error);
  56                 return FALSE;
  57         }
  58
  59         pixbuf = ev_document_thumbnails_get_thumbnail
  60                         (EV_DOCUMENT_THUMBNAILS (document), 0, THUMBNAIL_SIZE, FALSE);
  61
  62         if (pixbuf != NULL) {
  63                 GdkPixbuf *pdflogo;
  64
  65                 pdflogo = gdk_pixbuf_new_from_file (DATADIR"/pdf-icon.png", NULL);
  66                 if (pdflogo != NULL) {
  67                         int delta_height, delta_width;
  68
  69                         delta_width = gdk_pixbuf_get_width (pixbuf) -
  70                                       gdk_pixbuf_get_width (pdflogo);
  71                         delta_height = gdk_pixbuf_get_height (pixbuf) -
  72                                        gdk_pixbuf_get_height (pdflogo);
  73
  74                         gdk_pixbuf_composite (pdflogo, pixbuf,
  75                                               delta_width, delta_height,
  76                                               gdk_pixbuf_get_width (pdflogo),
  77                                               gdk_pixbuf_get_height (pdflogo),
  78                                               delta_width, delta_height,
  79                                               1, 1,
  80                                               GDK_INTERP_NEAREST, 100);
  81
  82                         gdk_pixbuf_unref  (pdflogo);
  83                 }
  84                 if (gdk_pixbuf_save (pixbuf, thumbnail, "png", NULL, NULL)) {
  85                         gdk_pixbuf_unref  (pixbuf);
  86                         g_object_unref (document);
  87                         return TRUE;
  88                 } else {
  89                         gdk_pixbuf_unref  (pixbuf);
  90                         g_object_unref (document);
  91                 }
  92         }
  93         return FALSE;
  94 }
  95
  96 int
  97 main (int argc, char *argv[])
  98 {
  99         int res;
 100         char *uri;
 101
 102         if (argc != 3) {
 103                 g_print ("%s: thumbnailer for Nautilus\n", argv[0]);
 104                 g_print ("usage: %s <input-filename> <output-filename>\n", argv[0]);
 105                 return -1;
 106         }
 107
 108         res = gnome_vfs_init ();
 109
 110         uri = gnome_vfs_make_uri_from_shell_arg (argv[1]);
 111
 112         if (evince_thumbnail_pngenc_get (uri, argv[2])) {
 113                 g_free (uri);
 114                 return 0;
 115         } else {
 116                 g_free (uri);
 117                 return -2;
 118         }
 119 }