summarylogtreecommitdiffstats
path: root/glib-thumbnailer.patch
blob: 87ead82363e7ed76d757c416d53c99d8bcd15ff9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
diff --git a/gio/glocalfileinfo.c b/gio/glocalfileinfo.c
index 487f8cc1a..b0e6db728 100644
--- a/gio/glocalfileinfo.c
+++ b/gio/glocalfileinfo.c
@@ -66,6 +66,12 @@
 #include "glib-private.h"
 
 #include "thumbnail-verify.h"
+#ifdef HAVE_DBUS1
+#define FREEDESKTOP_THUMBNAILER
+#include <gio/gio.h>
+#include <gio/gdbusproxy.h>
+#include <glib-object.h>
+#endif /* HAVE_DBUS1 */
 
 #ifdef G_OS_WIN32
 #include <windows.h>
@@ -103,6 +109,16 @@ struct ThumbMD5Context {
 	unsigned char in[64];
 };
 
+#ifdef FREEDESKTOP_THUMBNAILER
+typedef struct
+{
+  GMainLoop *mainloop;
+  guint32 handle;
+  gboolean success;
+  const char *error_message;
+} ThumbnailerState;
+#endif /* FREEDESKTOP_THUMBNAILER */
+
 #ifndef G_OS_WIN32
 
 typedef struct {
@@ -1355,16 +1371,130 @@ get_content_type (const char          *basename,
   
 }
 
+#ifdef FREEDESKTOP_THUMBNAILER
+static void
+thumbnailer_signal_cb (GDBusProxy *proxy,
+                       gchar      *sender_name,
+                       gchar      *signal_name,
+                       GVariant   *parameters,
+                       gpointer    thumbnailer_state)
+{
+  ThumbnailerState *state = (ThumbnailerState *) thumbnailer_state;
+  guint32 signal_handle;
+  const gchar **uris;
+
+
+  if (g_strcmp0 (signal_name, "Error") == 0)
+    {
+      g_variant_get (parameters, "(uasis)", &signal_handle, NULL, NULL, &state->error_message);
+      state->success = FALSE;
+    }
+  else if (g_strcmp0 (signal_name, "Ready") == 0)
+    {
+      g_variant_get (parameters, "(u^as)", &signal_handle, &uris);
+      state->success = TRUE;
+    }
+  else if (g_strcmp0 (signal_name, "Finished") == 0)
+    {
+      g_main_loop_quit (state->mainloop);
+    }
+
+}
+
+static gboolean
+generate_thumbnail(const char *uri, const char *mime_type)
+{
+  GMainContext *thread_context;
+  GDBusConnection *connection;
+  GDBusProxy *proxy;
+  GVariant *result = NULL;
+  GError *error = NULL;
+  ThumbnailerState state;
+  const gchar *uris[2] = { uri, NULL };
+  const gchar *mime_types[2] = { mime_type, NULL };
+
+  thread_context = g_main_context_new ();
+  state.mainloop = g_main_loop_new (thread_context, FALSE);
+  state.success = FALSE;
+
+  connection = g_dbus_connection_new_for_address_sync (
+      g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SESSION, NULL, NULL),
+      G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION | G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
+      NULL,
+      NULL,
+      &error);
+
+  proxy = g_dbus_proxy_new_sync (connection,
+                                 G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES,
+                                 NULL,
+                                 "org.freedesktop.thumbnails.Thumbnailer1",
+                                 "/org/freedesktop/thumbnails/Thumbnailer1",
+                                 "org.freedesktop.thumbnails.Thumbnailer1",
+                                 NULL, /* TODO: cancellable */
+                                 &error);
+  if (!proxy)
+    {
+      g_warning ("generate_thumbnail (): g_dbus_proxy_new_sync failed");
+      g_main_loop_unref (state.mainloop);
+      return FALSE;
+    }
+  else
+    g_debug("generate_thumbnail (): connected to D-Bus");
+
+  g_signal_connect (G_OBJECT (proxy), "g-signal",
+                    G_CALLBACK (thumbnailer_signal_cb), &state);
+
+  g_main_context_push_thread_default (thread_context);
+  result = g_dbus_proxy_call_sync (proxy,
+                                  "Queue",
+                                   g_variant_new("(^as^asssu)",
+                                                 uris,
+                                                 mime_types,
+                                                 "normal",
+                                                 "default",
+                                                 0),
+                                   G_DBUS_CALL_FLAGS_NONE,
+                                   -1,
+                                   NULL,
+                                   &error);
+  if (!result || error)
+    {
+      g_warning ("generate_thumbnail (): g_dbus_proxy_call_sync() failed: %s", error->message);
+      return FALSE;
+    }
+  g_variant_get (result, "(u)", &(state.handle));
+  g_variant_unref (result);
+  // block until the loop is terminated in thumbnailer_signal_cb ()
+  g_main_loop_run (state.mainloop);
+  g_object_unref (proxy);
+  g_object_unref (connection);
+  g_main_loop_unref (state.mainloop);
+  g_main_context_pop_thread_default (thread_context);
+  g_main_context_unref (thread_context);
+
+  if (state.success)
+    {
+      g_debug ("generate_thumbnail (): Thumbnail generated for %s", uris[0]);
+      return TRUE;
+    }
+  else
+    return FALSE;
+}
+#endif /* FREEDESKTOP_THUMBNAILER */
+
+
 /* @stat_buf is the pre-calculated result of stat(path), or %NULL if that failed. */
 static void
 get_thumbnail_attributes (const char     *path,
                           GFileInfo      *info,
-                          const GLocalFileStat *stat_buf)
+                          const GLocalFileStat *stat_buf,
+                          gboolean        generate)
 {
   GChecksum *checksum;
   char *uri;
   char *filename;
   char *basename;
+  const char *content_type;
 
   uri = g_filename_to_uri (path, NULL, NULL);
 
@@ -1383,6 +1513,7 @@ get_thumbnail_attributes (const char     *path,
       _g_file_info_set_attribute_byte_string_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_PATH, filename);
       _g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID,
                                                 thumbnail_verify (filename, uri, stat_buf));
+      generate = FALSE;
     }
   else
     {
@@ -1396,6 +1527,7 @@ get_thumbnail_attributes (const char     *path,
           _g_file_info_set_attribute_byte_string_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_PATH, filename);
           _g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID,
                                                     thumbnail_verify (filename, uri, stat_buf));
+          generate = FALSE;
         }
       else
         {
@@ -1411,9 +1543,32 @@ get_thumbnail_attributes (const char     *path,
               _g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAILING_FAILED, TRUE);
               _g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID,
                                                         thumbnail_verify (filename, uri, stat_buf));
+              generate = FALSE;
             }
         }
     }
+
+  if (generate)
+    {
+#ifdef FREEDESKTOP_THUMBNAILER
+      content_type = g_file_info_get_content_type (info);
+      if (content_type)
+        {
+          g_debug ("invoking Freedesktop Thumbnailer for %s (%s)", uri, content_type);
+          if(generate_thumbnail (uri, content_type))
+            {
+              /* Now that the thumbnail is generated, find it. */
+              get_thumbnail_attributes (path, info, stat_buf, FALSE);
+            }
+          else
+            {
+              _g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAILING_FAILED, TRUE);
+              _g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID, FALSE);
+            }
+         }
+#endif /* FREEDESKTOP_THUMBNAILER */
+    }
+
   g_free (basename);
   g_free (filename);
   g_free (uri);
@@ -1767,6 +1922,18 @@ _g_local_file_info_get (const char             *basename,
 
   info = g_file_info_new ();
 
+  /* Thumbnail generation requires a content-type.
+   * TODO: implement g_file_attribute_matcher_add () in gfileinfo.c */
+  if (_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_THUMBNAIL_PATH)
+      && !_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_STANDARD_CONTENT_TYPE))
+    {
+      char *attributes = g_file_attribute_matcher_to_string (attribute_matcher);
+      char *_attributes = g_strdup_printf ("%s,standard::content-type", attributes);
+      attribute_matcher = g_file_attribute_matcher_new (_attributes);
+      g_free (attributes);
+      g_free (_attributes);
+    }
+
   /* Make sure we don't set any unwanted attributes */
   g_file_info_set_attribute_mask (info, attribute_matcher);
   
@@ -1901,7 +2068,9 @@ _g_local_file_info_get (const char             *basename,
       _g_file_attribute_matcher_matches_id (attribute_matcher,
 					    G_FILE_ATTRIBUTE_ID_STANDARD_ICON) ||
       _g_file_attribute_matcher_matches_id (attribute_matcher,
-					    G_FILE_ATTRIBUTE_ID_STANDARD_SYMBOLIC_ICON))
+					    G_FILE_ATTRIBUTE_ID_STANDARD_SYMBOLIC_ICON) ||
+      _g_file_attribute_matcher_matches_id (attribute_matcher,
+              G_FILE_ATTRIBUTE_ID_THUMBNAIL_PATH))
     {
       char *content_type = get_content_type (basename, path, stat_ok ? &statbuf : NULL, is_symlink, symlink_broken, flags, FALSE);
 
@@ -2018,9 +2187,9 @@ _g_local_file_info_get (const char             *basename,
                                             G_FILE_ATTRIBUTE_ID_THUMBNAILING_FAILED))
     {
       if (stat_ok)
-          get_thumbnail_attributes (path, info, &statbuf);
+          get_thumbnail_attributes (path, info, &statbuf, TRUE);
       else
-          get_thumbnail_attributes (path, info, NULL);
+          get_thumbnail_attributes (path, info, NULL, TRUE);
     }
 
   vfs = g_vfs_get_default ();