thumbnailer/evince-thumbnailer.c

   1 #include <pdf-document.h>
   2
   3 #include <libgnomevfs/gnome-vfs-mime-utils.h>
   4 #include <libgnomevfs/gnome-vfs-uri.h>
   5 #include <libgnomevfs/gnome-vfs-utils.h>
   6 #include <libgnomevfs/gnome-vfs-init.h>
   7
   8 #include <ev-document.h>
   9 #include <ev-document-thumbnails.h>
  10
  11 #include <string.h>
  12
  13 static gboolean
  14 evince_thumbnail_pngenc_get (const char *uri, const char *thumbnail)
  15 {
  16         EvDocument *document = NULL;
  17         char *mime_type;
  18         GError *error;
  19         GdkPixbuf *pixbuf;
  20
  21         mime_type = gnome_vfs_get_mime_type (uri);
  22         if (mime_type == NULL)
  23                 return FALSE;
  24
  25         if (!strcmp (mime_type, "application/pdf"))
  26                 document = g_object_new (PDF_TYPE_DOCUMENT, NULL);
  27         else
  28                 return FALSE;
  29
  30         if (!ev_document_load (document, uri, &error)) {
  31                 if (error->domain == EV_DOCUMENT_ERROR &&
  32                     error->code == EV_DOCUMENT_ERROR_ENCRYPTED) {
  33                         /* FIXME: Create a thumb for cryp docs */
  34                 }
  35                 g_error_free (error);
  36                 return FALSE;
  37         }
  38
  39         pixbuf = ev_document_thumbnails_get_thumbnail
  40                         (EV_DOCUMENT_THUMBNAILS (document), 1, 100);
  41
  42         if (pixbuf != NULL) {
  43                 GdkPixbuf *pdflogo;
  44
  45                 pdflogo = gdk_pixbuf_new_from_file (DATADIR"/pdf-icon.png", NULL);
  46                 if (pdflogo != NULL) {
  47                         int delta_height, delta_width;
  48
  49                         delta_width = gdk_pixbuf_get_width (pixbuf) -
  50                                       gdk_pixbuf_get_width (pdflogo);
  51                         delta_height = gdk_pixbuf_get_height (pixbuf) -
  52                                        gdk_pixbuf_get_height (pdflogo);
  53
  54                         gdk_pixbuf_composite (pdflogo, pixbuf,
  55                                               delta_width, delta_height,
  56                                               gdk_pixbuf_get_width (pdflogo),
  57                                               gdk_pixbuf_get_height (pdflogo),
  58                                               delta_width, delta_height,
  59                                               1, 1,
  60                                               GDK_INTERP_NEAREST, 100);
  61
  62                         gdk_pixbuf_unref  (pdflogo);
  63                 }
  64                 if (gdk_pixbuf_save (pixbuf, thumbnail, "png", NULL, NULL)) {
  65                         gdk_pixbuf_unref  (pixbuf);
  66                         g_object_unref (document);
  67                         return TRUE;
  68                 } else {
  69                         gdk_pixbuf_unref  (pixbuf);
  70                         g_object_unref (document);
  71                 }
  72         }
  73         return FALSE;
  74 }
  75
  76 int
  77 main (int argc, char *argv[])
  78 {
  79         int res;
  80         char *uri;
  81
  82         if (argc != 3) {
  83                 g_print ("%s: thumbnailer for Nautilus\n", argv[0]);
  84                 g_print ("usage: %s <input-filename> <output-filename>\n", argv[0]);
  85                 return -1;
  86         }
  87
  88         res = gnome_vfs_init ();
  89
  90         uri = gnome_vfs_make_uri_from_shell_arg (argv[1]);
  91
  92         if (evince_thumbnail_pngenc_get (uri, argv[2])) {
  93                 g_free (uri);
  94                 return 0;
  95         } else {
  96                 g_free (uri);
  97                 return -2;
  98         }
  99 }