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 <libgnomevfs/gnome-vfs-mime-utils.h>
  20 #include <libgnomevfs/gnome-vfs-uri.h>
  21 #include <libgnomevfs/gnome-vfs-utils.h>
  22 #include <libgnomevfs/gnome-vfs-init.h>
  23 #include <libgnomevfs/gnome-vfs-ops.h>
  24
  25 #include <ev-document.h>
  26 #include <ev-document-thumbnails.h>
  27 #include <ev-document-factory.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, int size)
  35 {
  36         EvDocument *document = NULL;
  37         GError *error = NULL;
  38         GdkPixbuf *pixbuf;
  39         char *mime_type = NULL;
  40
  41         document = ev_document_factory_get_document  (uri, &mime_type, &error);
  42
  43         if (document == NULL || error) {
  44                 return FALSE;
  45         }
  46
  47         if (!ev_document_load (document, uri, &error)) {
  48                 if (error->domain == EV_DOCUMENT_ERROR &&
  49                     error->code == EV_DOCUMENT_ERROR_ENCRYPTED) {
  50                         /* FIXME: Create a thumb for cryp docs */
  51                 }
  52                 g_error_free (error);
  53                 return FALSE;
  54         }
  55
  56         if (!EV_IS_DOCUMENT_THUMBNAILS (document)) {
  57                 return FALSE;
  58         }
  59
  60         pixbuf = ev_document_thumbnails_get_thumbnail
  61                         (EV_DOCUMENT_THUMBNAILS (document), 0, 0, size, FALSE);
  62
  63         if (pixbuf != NULL) {
  64                 const char *overlaid_icon_name = NULL;
  65
  66                 if (overlaid_icon_name) {
  67                         GdkPixbuf *overlaid_pixbuf;
  68
  69                         gchar *overlaid_icon_path = g_strdup_printf ("%s/%s", DATADIR, overlaid_icon_name);
  70                         overlaid_pixbuf = gdk_pixbuf_new_from_file (overlaid_icon_path, NULL);
  71                         g_free (overlaid_icon_path);
  72                         if (overlaid_pixbuf != NULL) {
  73                                 int delta_height, delta_width;
  74
  75                                 delta_width = gdk_pixbuf_get_width (pixbuf) -
  76                                         gdk_pixbuf_get_width (overlaid_pixbuf);
  77                                 delta_height = gdk_pixbuf_get_height (pixbuf) -
  78                                         gdk_pixbuf_get_height (overlaid_pixbuf);
  79
  80                                 gdk_pixbuf_composite (overlaid_pixbuf, pixbuf,
  81                                                       delta_width, delta_height,
  82                                                       gdk_pixbuf_get_width (overlaid_pixbuf),
  83                                                       gdk_pixbuf_get_height (overlaid_pixbuf),
  84                                                       delta_width, delta_height,
  85                                                       1, 1,
  86                                                       GDK_INTERP_NEAREST, 100);
  87
  88                                 gdk_pixbuf_unref  (overlaid_pixbuf);
  89                         }
  90                 }
  91                 if (gdk_pixbuf_save (pixbuf, thumbnail, "png", NULL, NULL)) {
  92                         gdk_pixbuf_unref  (pixbuf);
  93                         g_object_unref (document);
  94                         return TRUE;
  95                 } else {
  96                         gdk_pixbuf_unref  (pixbuf);
  97                         g_object_unref (document);
  98                 }
  99         }
 100         return FALSE;
 101 }
 102
 103 int
 104 main (int argc, char *argv[])
 105 {
 106         int res;
 107         char *input, *output;
 108         int size;
 109         char *uri;
 110
 111         if (argc <= 2 || argc > 5 || strcmp (argv[1], "-h") == 0 ||
 112             strcmp (argv[1], "--help") == 0) {
 113                 g_print ("Usage: %s [-s <size>] <input> <output>\n", argv[0]);
 114                 return -1;
 115         }
 116
 117         res = gnome_vfs_init ();
 118
 119         if (!strcmp (argv[1], "-s")) {
 120                 input = argv[3];
 121                 output = argv[4];
 122                 size = g_strtod (argv[2], NULL);
 123         } else {
 124                 input = argv[1];
 125                 output = argv[2];
 126                 size = THUMBNAIL_SIZE;
 127         }
 128
 129         if (size < 40) {
 130                 g_print ("Size cannot be smaller than 40 pixels\n");
 131                 return -1;
 132         }
 133
 134         uri = gnome_vfs_make_uri_from_shell_arg (input);
 135
 136         if (evince_thumbnail_pngenc_get (uri, output, size)) {
 137                 g_free (uri);
 138                 return 0;
 139         } else {
 140                 g_free (uri);
 141                 return -2;
 142         }
 143 }