]> www.fi.muni.cz Git - evince.git/blob - thumbnailer/evince-thumbnailer.c
Initialize glib type system before using it. Fixes bug #513934.
[evince.git] / 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 <config.h>
20
21 #include <ev-document.h>
22 #include <ev-document-thumbnails.h>
23 #include <ev-async-renderer.h>
24 #include <ev-document-factory.h>
25 #include <ev-backends-manager.h>
26
27 #include <gio/gio.h>
28
29 #include <stdlib.h>
30 #include <string.h>
31
32 #define THUMBNAIL_SIZE 128
33
34 struct AsyncData {
35         EvDocument  *document;
36         const gchar *output;
37         gint         size;
38         gboolean     success;
39 };
40
41 static EvDocument *
42 evince_thumbnailer_get_document (const gchar *uri)
43 {
44         EvDocument *document = NULL;
45         GError     *error = NULL;
46
47         document = ev_document_factory_get_document  (uri, &error);
48         if (error) {
49                 if (error->domain == EV_DOCUMENT_ERROR &&
50                     error->code == EV_DOCUMENT_ERROR_ENCRYPTED) {
51                         /* FIXME: Create a thumb for cryp docs */
52                         g_error_free (error);
53                         return NULL;
54                 }
55                 g_error_free (error);
56                 return NULL;
57         }
58         
59         return document;
60 }
61
62 static gboolean
63 evince_thumbnail_pngenc_get (EvDocument *document, const char *thumbnail, int size)
64 {
65         EvRenderContext *rc;
66         double width, height;
67         GdkPixbuf *pixbuf;
68
69         ev_document_get_page_size (document, 0, &width, &height);
70
71         rc = ev_render_context_new (0, 0, size / width);
72         pixbuf = ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (document),
73                                                        rc, FALSE);
74         g_object_unref (rc);
75         
76         if (pixbuf != NULL) {
77                 const char *overlaid_icon_name = NULL;
78
79                 if (overlaid_icon_name) {
80                         GdkPixbuf *overlaid_pixbuf;
81
82                         gchar *overlaid_icon_path = g_strdup_printf ("%s/%s", DATADIR, overlaid_icon_name);
83                         overlaid_pixbuf = gdk_pixbuf_new_from_file (overlaid_icon_path, NULL);
84                         g_free (overlaid_icon_path);
85                         if (overlaid_pixbuf != NULL) {
86                                 int delta_height, delta_width;
87                                 
88                                 delta_width = gdk_pixbuf_get_width (pixbuf) -
89                                         gdk_pixbuf_get_width (overlaid_pixbuf);
90                                 delta_height = gdk_pixbuf_get_height (pixbuf) -
91                                         gdk_pixbuf_get_height (overlaid_pixbuf);
92                                 
93                                 gdk_pixbuf_composite (overlaid_pixbuf, pixbuf,
94                                                       delta_width, delta_height,
95                                                       gdk_pixbuf_get_width (overlaid_pixbuf),
96                                                       gdk_pixbuf_get_height (overlaid_pixbuf),
97                                                       delta_width, delta_height,
98                                                       1, 1,
99                                                       GDK_INTERP_NEAREST, 100);
100                                 
101                                 g_object_unref  (overlaid_pixbuf);
102                         }
103                 }
104                 
105                 if (gdk_pixbuf_save (pixbuf, thumbnail, "png", NULL, NULL)) {
106                         g_object_unref  (pixbuf);
107                         return TRUE;
108                 }
109
110                 g_object_unref  (pixbuf);
111         }
112         
113         return FALSE;
114 }
115
116 static gpointer
117 evince_thumbnail_pngenc_get_async (struct AsyncData *data)
118 {
119         ev_document_doc_mutex_lock ();
120         data->success = evince_thumbnail_pngenc_get (data->document,
121                                                      data->output,
122                                                      data->size);
123         ev_document_doc_mutex_unlock ();
124         
125         g_idle_add ((GSourceFunc)gtk_main_quit, NULL);
126         
127         return NULL;
128 }
129
130 int
131 main (int argc, char *argv[])
132 {
133         EvDocument *document;
134         const char *input;
135         const char *output;
136         int         size;
137         char       *uri;
138         GFile      *file;
139
140         if (argc <= 2 || argc > 5 || strcmp (argv[1], "-h") == 0 ||
141             strcmp (argv[1], "--help") == 0) {
142                 g_print ("Usage: %s [-s <size>] <input> <output>\n", argv[0]);
143                 return -1;
144         }
145
146         if (!strcmp (argv[1], "-s")) {
147                 input = argv[3];
148                 output = argv[4];
149                 size = atoi (argv[2]);
150         } else {
151                 input = argv[1];
152                 output = argv[2];
153                 size = THUMBNAIL_SIZE;
154         }
155
156         if (size < 40) {
157                 g_print ("Size cannot be smaller than 40 pixels\n");
158                 return -1;
159         }
160
161         g_type_init ();
162
163         if (!g_thread_supported ())
164                 g_thread_init (NULL);
165
166         ev_backends_manager_init ();
167
168         file = g_file_new_for_commandline_arg (input);
169         uri = g_file_get_uri (file);
170         document = evince_thumbnailer_get_document (uri);
171
172         g_object_unref (file);
173         g_free (uri);
174
175         if (!document) {
176                 ev_backends_manager_shutdown ();
177                 return -2;
178         }
179
180         if (!EV_IS_DOCUMENT_THUMBNAILS (document)) {
181                 g_object_unref (document);
182                 ev_backends_manager_shutdown ();
183                 return -2;
184         }
185
186         if (EV_IS_ASYNC_RENDERER (document)) {
187                 struct AsyncData data;
188
189                 gtk_init (&argc, &argv);
190                 
191                 data.document = document;
192                 data.output = output;
193                 data.size = size;
194
195                 g_thread_create ((GThreadFunc) evince_thumbnail_pngenc_get_async,
196                                  &data, FALSE, NULL);
197                 
198                 gtk_main ();
199
200                 g_object_unref (document);
201                 ev_backends_manager_shutdown ();
202
203                 return data.success ? 0 : -2;
204         }
205
206         if (!evince_thumbnail_pngenc_get (document, output, size)) {
207                 g_object_unref (document);
208                 ev_backends_manager_shutdown ();
209                 return -2;
210         }
211
212         g_object_unref (document);
213         ev_backends_manager_shutdown ();
214
215         return 0;
216 }