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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
24 #include <ev-document.h>
25 #include <ev-document-types.h>
26 #include <ev-document-thumbnails.h>
27
28 #include <string.h>
29
30 #define THUMBNAIL_SIZE 128
31
32 static gboolean
33 evince_thumbnail_pngenc_get (const char *uri, const char *thumbnail, int size)
34 {
35         EvDocument *document = NULL;
36         char *mime_type;
37         GError *error = NULL;
38         GdkPixbuf *pixbuf;
39         GType document_type;
40
41         mime_type = gnome_vfs_get_mime_type (uri);
42         if (mime_type == NULL)
43                 return FALSE;
44
45         document_type = ev_document_type_lookup (mime_type);
46         if (document_type==G_TYPE_INVALID)
47                 return FALSE;
48
49         document = g_object_new (document_type, NULL);
50
51         if (!ev_document_load (document, uri, &error)) {
52                 if (error->domain == EV_DOCUMENT_ERROR &&
53                     error->code == EV_DOCUMENT_ERROR_ENCRYPTED) {
54                         /* FIXME: Create a thumb for cryp docs */
55                 }
56                 g_error_free (error);
57                 return FALSE;
58         }
59
60         if (!EV_IS_DOCUMENT_THUMBNAILS (document)) {
61                 return FALSE;
62         }
63
64         pixbuf = ev_document_thumbnails_get_thumbnail
65                         (EV_DOCUMENT_THUMBNAILS (document), 0, size, FALSE);
66         
67         if (pixbuf != NULL) {
68                 const char *overlaid_icon_name = NULL;
69
70                 if (strcmp(mime_type,"application/pdf")==0) {
71                         overlaid_icon_name = "pdf-icon.png";
72                 }
73
74                 if (overlaid_icon_name) {
75                         GdkPixbuf *overlaid_pixbuf;
76
77                         gchar *overlaid_icon_path = g_strdup_printf ("%s/%s", DATADIR, overlaid_icon_name);
78                         overlaid_pixbuf = gdk_pixbuf_new_from_file (overlaid_icon_path, NULL);
79                         g_free (overlaid_icon_path);
80                         if (overlaid_pixbuf != NULL) {
81                                 int delta_height, delta_width;
82                                 
83                                 delta_width = gdk_pixbuf_get_width (pixbuf) -
84                                         gdk_pixbuf_get_width (overlaid_pixbuf);
85                                 delta_height = gdk_pixbuf_get_height (pixbuf) -
86                                         gdk_pixbuf_get_height (overlaid_pixbuf);
87                                 
88                                 gdk_pixbuf_composite (overlaid_pixbuf, pixbuf,
89                                                       delta_width, delta_height,
90                                                       gdk_pixbuf_get_width (overlaid_pixbuf),
91                                                       gdk_pixbuf_get_height (overlaid_pixbuf),
92                                                       delta_width, delta_height,
93                                                       1, 1,
94                                                       GDK_INTERP_NEAREST, 100);
95                                 
96                                 gdk_pixbuf_unref  (overlaid_pixbuf);
97                         }
98                 }
99                 if (gdk_pixbuf_save (pixbuf, thumbnail, "png", NULL, NULL)) {
100                         gdk_pixbuf_unref  (pixbuf);
101                         g_object_unref (document);
102                         return TRUE;
103                 } else {
104                         gdk_pixbuf_unref  (pixbuf);
105                         g_object_unref (document);
106                 }
107         }
108         return FALSE;
109 }
110
111 int
112 main (int argc, char *argv[])
113 {
114         int res;
115         char *input, *output;
116         int size;
117         char *uri;
118
119         if (argc <= 2 || argc > 5 || strcmp (argv[1], "-h") == 0 ||
120             strcmp (argv[1], "--help") == 0) {
121                 g_print ("Usage: %s [-s <size>] <input> <output>\n", argv[0]);
122                 return -1;
123         }
124
125         res = gnome_vfs_init ();
126
127         if (!strcmp (argv[1], "-s")) {
128                 input = argv[3];
129                 output = argv[4];
130                 size = g_strtod (argv[2], NULL);
131         } else {
132                 input = argv[1];
133                 output = argv[2];
134                 size = THUMBNAIL_SIZE;
135         }
136
137         if (size < 40) {
138                 g_print ("Size cannot be smaller than 40 pixels\n");
139                 return -1;
140         }
141
142         uri = gnome_vfs_make_uri_from_shell_arg (input);
143
144         if (evince_thumbnail_pngenc_get (uri, output, size)) {
145                 g_free (uri);
146                 return 0;
147         } else {
148                 g_free (uri);
149                 return -2;
150         }
151 }