Merge remote-tracking branch 'pochu/misc-fixes'
[empathy.git] / libempathy-gtk / empathy-ui-utils.c
1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
2 /*
3  * Copyright (C) 2002-2007 Imendio AB
4  * Copyright (C) 2007-2010 Collabora Ltd.
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 of the
9  * License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public
17  * License along with this program; if not, write to the
18  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19  * Boston, MA  02110-1301  USA
20  *
21  * Authors: Mikael Hallendal <micke@imendio.com>
22  *          Richard Hult <richard@imendio.com>
23  *          Martyn Russell <martyn@imendio.com>
24  *          Xavier Claessens <xclaesse@gmail.com>
25  *          Jonny Lamb <jonny.lamb@collabora.co.uk>
26  *          Travis Reitter <travis.reitter@collabora.co.uk>
27  *
28  *          Part of this file is copied from GtkSourceView (gtksourceiter.c):
29  *          Paolo Maggi
30  *          Jeroen Zwartepoorte
31  */
32
33 #include <config.h>
34
35 #include <string.h>
36 #include <X11/Xatom.h>
37 #include <gdk/gdkx.h>
38 #include <glib/gi18n-lib.h>
39 #include <gtk/gtk.h>
40 #include <gio/gio.h>
41
42 #include <telepathy-glib/util.h>
43 #include <folks/folks.h>
44
45 #include "empathy-ui-utils.h"
46 #include "empathy-images.h"
47 #include "empathy-live-search.h"
48 #include "empathy-smiley-manager.h"
49
50 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
51 #include <libempathy/empathy-debug.h>
52 #include <libempathy/empathy-utils.h>
53 #include <libempathy/empathy-ft-factory.h>
54
55 void
56 empathy_gtk_init (void)
57 {
58         static gboolean initialized = FALSE;
59
60         if (initialized)
61                 return;
62
63         empathy_init ();
64         gtk_icon_theme_append_search_path (gtk_icon_theme_get_default (),
65                                            PKGDATADIR G_DIR_SEPARATOR_S "icons");
66
67         initialized = TRUE;
68 }
69
70 static GtkBuilder *
71 builder_get_file_valist (const gchar *filename,
72                          const gchar *first_object,
73                          va_list      args)
74 {
75         GtkBuilder  *gui;
76         const gchar *name;
77         GObject    **object_ptr;
78         GError      *error = NULL;
79
80         DEBUG ("Loading file %s", filename);
81
82         gui = gtk_builder_new ();
83         gtk_builder_set_translation_domain (gui, GETTEXT_PACKAGE);
84         if (!gtk_builder_add_from_file (gui, filename, &error)) {
85                 g_critical ("GtkBuilder Error (%s): %s",
86                                 filename, error->message);
87                 g_clear_error (&error);
88                 g_object_unref (gui);
89
90                 /* we need to iterate and set all of the pointers to NULL */
91                 for (name = first_object; name;
92                      name = va_arg (args, const gchar *)) {
93                         object_ptr = va_arg (args, GObject**);
94
95                         *object_ptr = NULL;
96                 }
97
98                 return NULL;
99         }
100
101         for (name = first_object; name; name = va_arg (args, const gchar *)) {
102                 object_ptr = va_arg (args, GObject**);
103
104                 *object_ptr = gtk_builder_get_object (gui, name);
105
106                 if (!*object_ptr) {
107                         g_warning ("File is missing object '%s'.", name);
108                         continue;
109                 }
110         }
111
112         return gui;
113 }
114
115 GtkBuilder *
116 empathy_builder_get_file (const gchar *filename,
117                           const gchar *first_object,
118                           ...)
119 {
120         GtkBuilder *gui;
121         va_list     args;
122
123         va_start (args, first_object);
124         gui = builder_get_file_valist (filename, first_object, args);
125         va_end (args);
126
127         return gui;
128 }
129
130 void
131 empathy_builder_connect (GtkBuilder  *gui,
132                          gpointer     user_data,
133                          const gchar *first_object,
134                          ...)
135 {
136         va_list      args;
137         const gchar *name;
138         const gchar *sig;
139         GObject     *object;
140         GCallback    callback;
141
142         va_start (args, first_object);
143         for (name = first_object; name; name = va_arg (args, const gchar *)) {
144                 sig = va_arg (args, const gchar *);
145                 callback = va_arg (args, GCallback);
146
147                 object = gtk_builder_get_object (gui, name);
148                 if (!object) {
149                         g_warning ("File is missing object '%s'.", name);
150                         continue;
151                 }
152
153                 g_signal_connect (object, sig, callback, user_data);
154         }
155
156         va_end (args);
157 }
158
159 GtkWidget *
160 empathy_builder_unref_and_keep_widget (GtkBuilder *gui,
161                                        GtkWidget  *widget)
162 {
163         /* On construction gui sinks the initial reference to widget. When gui
164          * is finalized it will drop its ref to widget. We take our own ref to
165          * prevent widget being finalised. The widget is forced to have a
166          * floating reference, like when it was initially unowned so that it can
167          * be used like any other GtkWidget. */
168
169         g_object_ref (widget);
170         g_object_force_floating (G_OBJECT (widget));
171         g_object_unref (gui);
172
173         return widget;
174 }
175
176 const gchar *
177 empathy_icon_name_for_presence (TpConnectionPresenceType presence)
178 {
179         switch (presence) {
180         case TP_CONNECTION_PRESENCE_TYPE_AVAILABLE:
181                 return EMPATHY_IMAGE_AVAILABLE;
182         case TP_CONNECTION_PRESENCE_TYPE_BUSY:
183                 return EMPATHY_IMAGE_BUSY;
184         case TP_CONNECTION_PRESENCE_TYPE_AWAY:
185                 return EMPATHY_IMAGE_AWAY;
186         case TP_CONNECTION_PRESENCE_TYPE_EXTENDED_AWAY:
187                 if (gtk_icon_theme_has_icon (gtk_icon_theme_get_default (),
188                                              EMPATHY_IMAGE_EXT_AWAY))
189                         return EMPATHY_IMAGE_EXT_AWAY;
190
191                 /* The 'extended-away' icon is not an official one so we fallback to idle if
192                  * it's not implemented */
193                 return EMPATHY_IMAGE_IDLE;
194         case TP_CONNECTION_PRESENCE_TYPE_HIDDEN:
195                 if (gtk_icon_theme_has_icon (gtk_icon_theme_get_default (),
196                                              EMPATHY_IMAGE_HIDDEN))
197                         return EMPATHY_IMAGE_HIDDEN;
198
199                 /* The 'hidden' icon is not an official one so we fallback to offline if
200                  * it's not implemented */
201                 return EMPATHY_IMAGE_OFFLINE;
202         case TP_CONNECTION_PRESENCE_TYPE_OFFLINE:
203         case TP_CONNECTION_PRESENCE_TYPE_ERROR:
204                 return EMPATHY_IMAGE_OFFLINE;
205         case TP_CONNECTION_PRESENCE_TYPE_UNKNOWN:
206                 return EMPATHY_IMAGE_PENDING;
207         case TP_CONNECTION_PRESENCE_TYPE_UNSET:
208         default:
209                 return NULL;
210         }
211
212         return NULL;
213 }
214
215 const gchar *
216 empathy_icon_name_for_contact (EmpathyContact *contact)
217 {
218         TpConnectionPresenceType presence;
219
220         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact),
221                               EMPATHY_IMAGE_OFFLINE);
222
223         presence = empathy_contact_get_presence (contact);
224         return empathy_icon_name_for_presence (presence);
225 }
226
227 const gchar *
228 empathy_icon_name_for_individual (FolksIndividual *individual)
229 {
230         FolksPresenceType folks_presence;
231         TpConnectionPresenceType presence;
232
233         folks_presence =
234             folks_presence_details_get_presence_type (
235                 FOLKS_PRESENCE_DETAILS (individual));
236         presence = empathy_folks_presence_type_to_tp (folks_presence);
237
238         return empathy_icon_name_for_presence (presence);
239 }
240
241 const gchar *
242 empathy_protocol_name_for_contact (EmpathyContact   *contact)
243 {
244         TpAccount     *account;
245
246         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
247
248         account = empathy_contact_get_account (contact);
249         if (account == NULL) {
250                 return NULL;
251         }
252
253         return tp_account_get_icon_name (account);
254 }
255
256 GdkPixbuf *
257 empathy_pixbuf_from_data (gchar *data,
258                           gsize  data_size)
259 {
260         return empathy_pixbuf_from_data_and_mime (data, data_size, NULL);
261 }
262
263 GdkPixbuf *
264 empathy_pixbuf_from_data_and_mime (gchar  *data,
265                                    gsize   data_size,
266                                    gchar **mime_type)
267 {
268         GdkPixbufLoader *loader;
269         GdkPixbufFormat *format;
270         GdkPixbuf       *pixbuf = NULL;
271         gchar          **mime_types;
272         GError          *error = NULL;
273
274         if (!data) {
275                 return NULL;
276         }
277
278         loader = gdk_pixbuf_loader_new ();
279         if (!gdk_pixbuf_loader_write (loader, (guchar *) data, data_size, &error)) {
280                 DEBUG ("Failed to write to pixbuf loader: %s",
281                         error ? error->message : "No error given");
282                 goto out;
283         }
284         if (!gdk_pixbuf_loader_close (loader, &error)) {
285                 DEBUG ("Failed to close pixbuf loader: %s",
286                         error ? error->message : "No error given");
287                 goto out;
288         }
289
290         pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
291         if (pixbuf) {
292                 g_object_ref (pixbuf);
293
294                 if (mime_type != NULL) {
295                         format = gdk_pixbuf_loader_get_format (loader);
296                         mime_types = gdk_pixbuf_format_get_mime_types (format);
297
298                         *mime_type = g_strdup (*mime_types);
299                         if (mime_types[1] != NULL) {
300                                 DEBUG ("Loader supports more than one mime "
301                                         "type! Picking the first one, %s",
302                                         *mime_type);
303                         }
304                         g_strfreev (mime_types);
305                 }
306         }
307
308 out:
309         g_clear_error (&error);
310         g_object_unref (loader);
311
312         return pixbuf;
313 }
314
315 struct SizeData {
316         gint     width;
317         gint     height;
318         gboolean preserve_aspect_ratio;
319 };
320
321 static void
322 pixbuf_from_avatar_size_prepared_cb (GdkPixbufLoader *loader,
323                                      int              width,
324                                      int              height,
325                                      struct SizeData *data)
326 {
327         g_return_if_fail (width > 0 && height > 0);
328
329         if (data->preserve_aspect_ratio && (data->width > 0 || data->height > 0)) {
330                 if (width < data->width && height < data->height) {
331                         width = width;
332                         height = height;
333                 }
334
335                 if (data->width < 0) {
336                         width = width * (double) data->height / (gdouble) height;
337                         height = data->height;
338                 } else if (data->height < 0) {
339                         height = height * (double) data->width / (double) width;
340                         width = data->width;
341                 } else if ((double) height * (double) data->width >
342                            (double) width * (double) data->height) {
343                         width = 0.5 + (double) width * (double) data->height / (double) height;
344                         height = data->height;
345                 } else {
346                         height = 0.5 + (double) height * (double) data->width / (double) width;
347                         width = data->width;
348                 }
349         } else {
350                 if (data->width > 0) {
351                         width = data->width;
352                 }
353
354                 if (data->height > 0) {
355                         height = data->height;
356                 }
357         }
358
359         gdk_pixbuf_loader_set_size (loader, width, height);
360 }
361
362 static void
363 empathy_avatar_pixbuf_roundify (GdkPixbuf *pixbuf)
364 {
365         gint width, height, rowstride;
366         guchar *pixels;
367
368         width = gdk_pixbuf_get_width (pixbuf);
369         height = gdk_pixbuf_get_height (pixbuf);
370         rowstride = gdk_pixbuf_get_rowstride (pixbuf);
371         pixels = gdk_pixbuf_get_pixels (pixbuf);
372
373         if (width < 6 || height < 6) {
374                 return;
375         }
376
377         /* Top left */
378         pixels[3] = 0;
379         pixels[7] = 0x80;
380         pixels[11] = 0xC0;
381         pixels[rowstride + 3] = 0x80;
382         pixels[rowstride * 2 + 3] = 0xC0;
383
384         /* Top right */
385         pixels[width * 4 - 1] = 0;
386         pixels[width * 4 - 5] = 0x80;
387         pixels[width * 4 - 9] = 0xC0;
388         pixels[rowstride + (width * 4) - 1] = 0x80;
389         pixels[(2 * rowstride) + (width * 4) - 1] = 0xC0;
390
391         /* Bottom left */
392         pixels[(height - 1) * rowstride + 3] = 0;
393         pixels[(height - 1) * rowstride + 7] = 0x80;
394         pixels[(height - 1) * rowstride + 11] = 0xC0;
395         pixels[(height - 2) * rowstride + 3] = 0x80;
396         pixels[(height - 3) * rowstride + 3] = 0xC0;
397
398         /* Bottom right */
399         pixels[height * rowstride - 1] = 0;
400         pixels[(height - 1) * rowstride - 1] = 0x80;
401         pixels[(height - 2) * rowstride - 1] = 0xC0;
402         pixels[height * rowstride - 5] = 0x80;
403         pixels[height * rowstride - 9] = 0xC0;
404 }
405
406 static gboolean
407 empathy_gdk_pixbuf_is_opaque (GdkPixbuf *pixbuf)
408 {
409         gint height, rowstride, i;
410         guchar *pixels;
411         guchar *row;
412
413         height = gdk_pixbuf_get_height (pixbuf);
414         rowstride = gdk_pixbuf_get_rowstride (pixbuf);
415         pixels = gdk_pixbuf_get_pixels (pixbuf);
416
417         row = pixels;
418         for (i = 3; i < rowstride; i+=4) {
419                 if (row[i] < 0xfe) {
420                         return FALSE;
421                 }
422         }
423
424         for (i = 1; i < height - 1; i++) {
425                 row = pixels + (i*rowstride);
426                 if (row[3] < 0xfe || row[rowstride-1] < 0xfe) {
427                         return FALSE;
428                 }
429         }
430
431         row = pixels + ((height-1) * rowstride);
432         for (i = 3; i < rowstride; i+=4) {
433                 if (row[i] < 0xfe) {
434                         return FALSE;
435                 }
436         }
437
438         return TRUE;
439 }
440
441 static GdkPixbuf *
442 avatar_pixbuf_from_loader (GdkPixbufLoader *loader)
443 {
444         GdkPixbuf *pixbuf;
445
446         pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
447         if (!gdk_pixbuf_get_has_alpha (pixbuf)) {
448                 GdkPixbuf *rounded_pixbuf;
449
450                 rounded_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
451                                                  gdk_pixbuf_get_width (pixbuf),
452                                                  gdk_pixbuf_get_height (pixbuf));
453                 gdk_pixbuf_copy_area (pixbuf, 0, 0,
454                                       gdk_pixbuf_get_width (pixbuf),
455                                       gdk_pixbuf_get_height (pixbuf),
456                                       rounded_pixbuf,
457                                       0, 0);
458                 pixbuf = rounded_pixbuf;
459         } else {
460                 g_object_ref (pixbuf);
461         }
462
463         if (empathy_gdk_pixbuf_is_opaque (pixbuf)) {
464                 empathy_avatar_pixbuf_roundify (pixbuf);
465         }
466
467         return pixbuf;
468 }
469
470 GdkPixbuf *
471 empathy_pixbuf_from_avatar_scaled (EmpathyAvatar *avatar,
472                                   gint          width,
473                                   gint          height)
474 {
475         GdkPixbuf        *pixbuf;
476         GdkPixbufLoader  *loader;
477         struct SizeData   data;
478         GError           *error = NULL;
479
480         if (!avatar) {
481                 return NULL;
482         }
483
484         data.width = width;
485         data.height = height;
486         data.preserve_aspect_ratio = TRUE;
487
488         loader = gdk_pixbuf_loader_new ();
489
490         g_signal_connect (loader, "size-prepared",
491                           G_CALLBACK (pixbuf_from_avatar_size_prepared_cb),
492                           &data);
493
494         if (!gdk_pixbuf_loader_write (loader, avatar->data, avatar->len, &error)) {
495                 g_warning ("Couldn't write avatar image:%p with "
496                            "length:%" G_GSIZE_FORMAT " to pixbuf loader: %s",
497                            avatar->data, avatar->len, error->message);
498                 g_error_free (error);
499                 return NULL;
500         }
501
502         gdk_pixbuf_loader_close (loader, NULL);
503         pixbuf = avatar_pixbuf_from_loader (loader);
504
505         g_object_unref (loader);
506
507         return pixbuf;
508 }
509
510 GdkPixbuf *
511 empathy_pixbuf_avatar_from_contact_scaled (EmpathyContact *contact,
512                                           gint           width,
513                                           gint           height)
514 {
515         EmpathyAvatar *avatar;
516
517         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
518
519         avatar = empathy_contact_get_avatar (contact);
520
521         return empathy_pixbuf_from_avatar_scaled (avatar, width, height);
522 }
523
524 typedef struct {
525         FolksIndividual *individual;
526         GSimpleAsyncResult *result;
527         guint width;
528         guint height;
529         struct SizeData size_data;
530         GdkPixbufLoader *loader;
531         GCancellable *cancellable;
532         guint8 data[512];
533 } PixbufAvatarFromIndividualClosure;
534
535 static PixbufAvatarFromIndividualClosure *
536 pixbuf_avatar_from_individual_closure_new (FolksIndividual    *individual,
537                                            GSimpleAsyncResult *result,
538                                            gint                width,
539                                            gint                height,
540                                            GCancellable       *cancellable)
541 {
542         PixbufAvatarFromIndividualClosure *closure;
543
544         g_return_val_if_fail (FOLKS_IS_INDIVIDUAL (individual), NULL);
545         g_return_val_if_fail (G_IS_ASYNC_RESULT (result), NULL);
546
547         closure = g_new0 (PixbufAvatarFromIndividualClosure, 1);
548         closure->individual = g_object_ref (individual);
549         closure->result = g_object_ref (result);
550         closure->width = width;
551         closure->height = height;
552         closure->cancellable = g_object_ref (cancellable);
553
554         return closure;
555 }
556
557 static void
558 pixbuf_avatar_from_individual_closure_free (
559                 PixbufAvatarFromIndividualClosure *closure)
560 {
561         g_object_unref (closure->cancellable);
562         tp_clear_object (&closure->loader);
563         g_object_unref (closure->individual);
564         g_object_unref (closure->result);
565         g_free (closure);
566 }
567
568 static void
569 avatar_icon_load_close_cb (GObject      *object,
570                            GAsyncResult *result,
571                            gpointer      user_data)
572 {
573         GError *error = NULL;
574
575         g_input_stream_close_finish (G_INPUT_STREAM (object), result, &error);
576
577         if (error != NULL) {
578                 DEBUG ("Failed to close pixbuf stream: %s", error->message);
579                 g_error_free (error);
580         }
581 }
582
583 static void
584 avatar_icon_load_read_cb (GObject      *object,
585                           GAsyncResult *result,
586                           gpointer      user_data)
587 {
588         GInputStream *stream = G_INPUT_STREAM (object);
589         PixbufAvatarFromIndividualClosure *closure = user_data;
590         gssize n_read;
591         GError *error = NULL;
592
593         /* Finish reading this chunk from the stream */
594         n_read = g_input_stream_read_finish (stream, result, &error);
595         if (error != NULL) {
596                 DEBUG ("Failed to finish read from pixbuf stream: %s",
597                         error->message);
598                 g_simple_async_result_set_from_error (closure->result, error);
599                 goto out_close;
600         }
601
602         /* Write the chunk to the pixbuf loader */
603         if (!gdk_pixbuf_loader_write (closure->loader, (guchar *) closure->data,
604                         n_read, &error)) {
605                 DEBUG ("Failed to write to pixbuf loader: %s",
606                         error ? error->message : "No error given");
607                 g_simple_async_result_set_from_error (closure->result, error);
608                 goto out_close;
609         }
610
611         if (n_read == 0) {
612                 /* EOF? */
613                 if (!gdk_pixbuf_loader_close (closure->loader, &error)) {
614                         DEBUG ("Failed to close pixbuf loader: %s",
615                                 error ? error->message : "No error given");
616                         g_simple_async_result_set_from_error (closure->result, error);
617                         goto out;
618                 }
619
620                 /* We're done. */
621                 g_simple_async_result_set_op_res_gpointer (closure->result,
622                         avatar_pixbuf_from_loader (closure->loader),
623                         g_object_unref);
624
625                 goto out;
626         } else {
627                 /* Loop round and read another chunk. */
628                 g_input_stream_read_async (stream, closure->data,
629                         G_N_ELEMENTS (closure->data),
630                         G_PRIORITY_DEFAULT, closure->cancellable,
631                         avatar_icon_load_read_cb, closure);
632
633                 return;
634         }
635
636 out_close:
637         /* We must close the pixbuf loader before unreffing it. */
638         gdk_pixbuf_loader_close (closure->loader, NULL);
639
640 out:
641         /* Close the file for safety (even though it should be
642          * automatically closed when the stream is finalised). */
643         g_input_stream_close_async (stream, G_PRIORITY_DEFAULT, NULL,
644                 (GAsyncReadyCallback) avatar_icon_load_close_cb, NULL);
645
646         g_simple_async_result_complete (closure->result);
647
648         g_clear_error (&error);
649         pixbuf_avatar_from_individual_closure_free (closure);
650 }
651
652 static void
653 avatar_icon_load_cb (GObject      *object,
654                      GAsyncResult *result,
655                      gpointer      user_data)
656 {
657         GLoadableIcon *icon = G_LOADABLE_ICON (object);
658         PixbufAvatarFromIndividualClosure *closure = user_data;
659         GInputStream *stream;
660         GError *error = NULL;
661
662         stream = g_loadable_icon_load_finish (icon, result, NULL, &error);
663         if (error != NULL) {
664                 DEBUG ("Failed to open avatar stream: %s", error->message);
665                 g_simple_async_result_set_from_error (closure->result, error);
666                 goto out;
667         }
668
669         closure->size_data.width = closure->width;
670         closure->size_data.height = closure->height;
671         closure->size_data.preserve_aspect_ratio = TRUE;
672
673         /* Load the data into a pixbuf loader in chunks. */
674         closure->loader = gdk_pixbuf_loader_new ();
675
676         g_signal_connect (closure->loader, "size-prepared",
677                           G_CALLBACK (pixbuf_from_avatar_size_prepared_cb),
678                           &(closure->size_data));
679
680         /* Begin to read the first chunk. */
681         g_input_stream_read_async (stream, closure->data,
682                         G_N_ELEMENTS (closure->data),
683                         G_PRIORITY_DEFAULT, closure->cancellable,
684                         avatar_icon_load_read_cb, closure);
685
686         g_object_unref (stream);
687
688         return;
689
690 out:
691         g_simple_async_result_complete (closure->result);
692
693         g_clear_error (&error);
694         tp_clear_object (&stream);
695         pixbuf_avatar_from_individual_closure_free (closure);
696 }
697
698 void
699 empathy_pixbuf_avatar_from_individual_scaled_async (
700                 FolksIndividual     *individual,
701                 gint                 width,
702                 gint                 height,
703                 GCancellable        *cancellable,
704                 GAsyncReadyCallback  callback,
705                 gpointer             user_data)
706 {
707         GLoadableIcon *avatar_icon;
708         GSimpleAsyncResult *result;
709         PixbufAvatarFromIndividualClosure *closure;
710
711         result = g_simple_async_result_new (G_OBJECT (individual),
712                         callback, user_data,
713                         empathy_pixbuf_avatar_from_individual_scaled_async);
714
715         avatar_icon =
716                 folks_avatar_details_get_avatar (FOLKS_AVATAR_DETAILS (individual));
717         if (avatar_icon == NULL)
718                 goto out;
719
720         closure = pixbuf_avatar_from_individual_closure_new (individual, result,
721                                                              width, height,
722                                                              cancellable);
723         if (closure == NULL)
724                 goto out;
725
726         g_loadable_icon_load_async (avatar_icon, width, cancellable,
727                         avatar_icon_load_cb, closure);
728
729         g_object_unref (result);
730
731         return;
732
733 out:
734         g_simple_async_result_set_op_res_gpointer (result, NULL, NULL);
735         g_simple_async_result_complete (result);
736         g_object_unref (result);
737 }
738
739 /* Return a ref on the GdkPixbuf */
740 GdkPixbuf *
741 empathy_pixbuf_avatar_from_individual_scaled_finish (
742                 FolksIndividual *individual,
743                 GAsyncResult *result,
744                 GError **error)
745 {
746         GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
747         gboolean result_valid;
748         GdkPixbuf *pixbuf;
749
750         g_return_val_if_fail (FOLKS_IS_INDIVIDUAL (individual), NULL);
751         g_return_val_if_fail (G_IS_SIMPLE_ASYNC_RESULT (simple), NULL);
752
753         if (g_simple_async_result_propagate_error (simple, error))
754                 return NULL;
755
756         result_valid = g_simple_async_result_is_valid (result,
757                         G_OBJECT (individual),
758                         empathy_pixbuf_avatar_from_individual_scaled_async);
759         g_return_val_if_fail (result_valid, NULL);
760
761         pixbuf = g_simple_async_result_get_op_res_gpointer (simple);
762         return pixbuf != NULL ? g_object_ref (pixbuf) : NULL;
763 }
764
765 GdkPixbuf *
766 empathy_pixbuf_contact_status_icon (EmpathyContact *contact,
767                                    gboolean       show_protocol)
768 {
769         const gchar *icon_name;
770
771         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
772
773         icon_name = empathy_icon_name_for_contact (contact);
774
775         if (icon_name == NULL) {
776                 return NULL;
777         }
778         return empathy_pixbuf_contact_status_icon_with_icon_name (contact,
779             icon_name,
780             show_protocol);
781 }
782
783 GdkPixbuf *
784 empathy_pixbuf_contact_status_icon_with_icon_name (EmpathyContact *contact,
785                                           const gchar    *icon_name,
786                                           gboolean       show_protocol)
787 {
788         GdkPixbuf *pix_status;
789         GdkPixbuf *pix_protocol;
790         gchar     *icon_filename;
791         gint       height, width;
792         gint       numerator, denominator;
793
794         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact) ||
795                         (show_protocol == FALSE), NULL);
796         g_return_val_if_fail (icon_name != NULL, NULL);
797
798         numerator = 3;
799         denominator = 4;
800
801         icon_filename = empathy_filename_from_icon_name (icon_name,
802                                                          GTK_ICON_SIZE_MENU);
803         if (icon_filename == NULL) {
804                 DEBUG ("icon name: %s could not be found\n", icon_name);
805                 return NULL;
806         }
807
808         pix_status = gdk_pixbuf_new_from_file (icon_filename, NULL);
809
810         if (pix_status == NULL) {
811                 DEBUG ("Could not open icon %s\n", icon_filename);
812                 g_free (icon_filename);
813                 return NULL;
814         }
815
816         g_free (icon_filename);
817
818         if (!show_protocol)
819                 return pix_status;
820
821         height = gdk_pixbuf_get_height (pix_status);
822         width = gdk_pixbuf_get_width (pix_status);
823
824         pix_protocol = empathy_pixbuf_protocol_from_contact_scaled (contact,
825                                                                     width * numerator / denominator,
826                                                                     height * numerator / denominator);
827
828         if (pix_protocol == NULL) {
829                 return pix_status;
830         }
831         gdk_pixbuf_composite (pix_protocol, pix_status,
832             0, height - height * numerator / denominator,
833             width * numerator / denominator, height * numerator / denominator,
834             0, height - height * numerator / denominator,
835             1, 1,
836             GDK_INTERP_BILINEAR, 255);
837
838         g_object_unref (pix_protocol);
839
840         return pix_status;
841 }
842
843 GdkPixbuf *
844 empathy_pixbuf_protocol_from_contact_scaled (EmpathyContact *contact,
845                                           gint           width,
846                                           gint           height)
847 {
848         TpAccount *account;
849         gchar     *filename;
850         GdkPixbuf *pixbuf = NULL;
851
852         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
853
854         account = empathy_contact_get_account (contact);
855         filename = empathy_filename_from_icon_name (tp_account_get_icon_name (account),
856                                                     GTK_ICON_SIZE_MENU);
857         if (filename != NULL) {
858                 pixbuf = gdk_pixbuf_new_from_file_at_size (filename, width, height, NULL);
859                 g_free (filename);
860         }
861
862         return pixbuf;
863 }
864
865 GdkPixbuf *
866 empathy_pixbuf_scale_down_if_necessary (GdkPixbuf *pixbuf, gint max_size)
867 {
868         gint      width, height;
869         gdouble   factor;
870
871         width = gdk_pixbuf_get_width (pixbuf);
872         height = gdk_pixbuf_get_height (pixbuf);
873
874         if (width > 0 && (width > max_size || height > max_size)) {
875                 factor = (gdouble) max_size / MAX (width, height);
876
877                 width = width * factor;
878                 height = height * factor;
879
880                 return gdk_pixbuf_scale_simple (pixbuf,
881                                                 width, height,
882                                                 GDK_INTERP_HYPER);
883         }
884
885         return g_object_ref (pixbuf);
886 }
887
888 GdkPixbuf *
889 empathy_pixbuf_from_icon_name_sized (const gchar *icon_name,
890                                      gint size)
891 {
892         GtkIconTheme *theme;
893         GdkPixbuf *pixbuf;
894         GError *error = NULL;
895
896         if (!icon_name) {
897                 return NULL;
898         }
899
900         theme = gtk_icon_theme_get_default ();
901
902         pixbuf = gtk_icon_theme_load_icon (theme,
903                                            icon_name,
904                                            size,
905                                            0,
906                                            &error);
907         if (error) {
908                 DEBUG ("Error loading icon: %s", error->message);
909                 g_clear_error (&error);
910         }
911
912         return pixbuf;
913 }
914
915 GdkPixbuf *
916 empathy_pixbuf_from_icon_name (const gchar *icon_name,
917                                GtkIconSize  icon_size)
918 {
919         gint  w, h;
920         gint  size = 48;
921
922         if (!icon_name) {
923                 return NULL;
924         }
925
926         if (gtk_icon_size_lookup (icon_size, &w, &h)) {
927                 size = (w + h) / 2;
928         }
929
930         return empathy_pixbuf_from_icon_name_sized (icon_name, size);
931 }
932
933 gchar *
934 empathy_filename_from_icon_name (const gchar *icon_name,
935                                  GtkIconSize  icon_size)
936 {
937         GtkIconTheme *icon_theme;
938         GtkIconInfo  *icon_info;
939         gint          w, h;
940         gint          size = 48;
941         gchar        *ret;
942
943         icon_theme = gtk_icon_theme_get_default ();
944
945         if (gtk_icon_size_lookup (icon_size, &w, &h)) {
946                 size = (w + h) / 2;
947         }
948
949         icon_info = gtk_icon_theme_lookup_icon (icon_theme, icon_name, size, 0);
950         if (icon_info == NULL)
951                 return NULL;
952
953         ret = g_strdup (gtk_icon_info_get_filename (icon_info));
954         gtk_icon_info_free (icon_info);
955
956         return ret;
957 }
958
959 /* Stolen from GtkSourceView, hence the weird intendation. Please keep it like
960  * that to make it easier to apply changes from the original code.
961  */
962 #define GTK_TEXT_UNKNOWN_CHAR 0xFFFC
963
964 /* this function acts like g_utf8_offset_to_pointer() except that if it finds a
965  * decomposable character it consumes the decomposition length from the given
966  * offset.  So it's useful when the offset was calculated for the normalized
967  * version of str, but we need a pointer to str itself. */
968 static const gchar *
969 pointer_from_offset_skipping_decomp (const gchar *str, gint offset)
970 {
971         gchar *casefold, *normal;
972         const gchar *p, *q;
973
974         p = str;
975         while (offset > 0)
976         {
977                 q = g_utf8_next_char (p);
978                 casefold = g_utf8_casefold (p, q - p);
979                 normal = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
980                 offset -= g_utf8_strlen (normal, -1);
981                 g_free (casefold);
982                 g_free (normal);
983                 p = q;
984         }
985         return p;
986 }
987
988 static const gchar *
989 g_utf8_strcasestr (const gchar *haystack, const gchar *needle)
990 {
991         gsize needle_len;
992         gsize haystack_len;
993         const gchar *ret = NULL;
994         gchar *p;
995         gchar *casefold;
996         gchar *caseless_haystack;
997         gint i;
998
999         g_return_val_if_fail (haystack != NULL, NULL);
1000         g_return_val_if_fail (needle != NULL, NULL);
1001
1002         casefold = g_utf8_casefold (haystack, -1);
1003         caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1004         g_free (casefold);
1005
1006         needle_len = g_utf8_strlen (needle, -1);
1007         haystack_len = g_utf8_strlen (caseless_haystack, -1);
1008
1009         if (needle_len == 0)
1010         {
1011                 ret = (gchar *) haystack;
1012                 goto finally_1;
1013         }
1014
1015         if (haystack_len < needle_len)
1016         {
1017                 ret = NULL;
1018                 goto finally_1;
1019         }
1020
1021         p = (gchar *) caseless_haystack;
1022         needle_len = strlen (needle);
1023         i = 0;
1024
1025         while (*p)
1026         {
1027                 if ((strncmp (p, needle, needle_len) == 0))
1028                 {
1029                         ret = pointer_from_offset_skipping_decomp (haystack, i);
1030                         goto finally_1;
1031                 }
1032
1033                 p = g_utf8_next_char (p);
1034                 i++;
1035         }
1036
1037 finally_1:
1038         g_free (caseless_haystack);
1039
1040         return ret;
1041 }
1042
1043 static gboolean
1044 g_utf8_caselessnmatch (const char *s1, const char *s2,
1045                        gssize n1, gssize n2)
1046 {
1047         gchar *casefold;
1048         gchar *normalized_s1;
1049         gchar *normalized_s2;
1050         gint len_s1;
1051         gint len_s2;
1052         gboolean ret = FALSE;
1053
1054         g_return_val_if_fail (s1 != NULL, FALSE);
1055         g_return_val_if_fail (s2 != NULL, FALSE);
1056         g_return_val_if_fail (n1 > 0, FALSE);
1057         g_return_val_if_fail (n2 > 0, FALSE);
1058
1059         casefold = g_utf8_casefold (s1, n1);
1060         normalized_s1 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1061         g_free (casefold);
1062
1063         casefold = g_utf8_casefold (s2, n2);
1064         normalized_s2 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1065         g_free (casefold);
1066
1067         len_s1 = strlen (normalized_s1);
1068         len_s2 = strlen (normalized_s2);
1069
1070         if (len_s1 < len_s2)
1071                 goto finally_2;
1072
1073         ret = (strncmp (normalized_s1, normalized_s2, len_s2) == 0);
1074
1075 finally_2:
1076         g_free (normalized_s1);
1077         g_free (normalized_s2);
1078
1079         return ret;
1080 }
1081
1082 static void
1083 forward_chars_with_skipping (GtkTextIter *iter,
1084                              gint         count,
1085                              gboolean     skip_invisible,
1086                              gboolean     skip_nontext,
1087                              gboolean     skip_decomp)
1088 {
1089         gint i;
1090
1091         g_return_if_fail (count >= 0);
1092
1093         i = count;
1094
1095         while (i > 0)
1096         {
1097                 gboolean ignored = FALSE;
1098
1099                 /* minimal workaround to avoid the infinite loop of bug #168247.
1100                  * It doesn't fix the problemjust the symptom...
1101                  */
1102                 if (gtk_text_iter_is_end (iter))
1103                         return;
1104
1105                 if (skip_nontext && gtk_text_iter_get_char (iter) == GTK_TEXT_UNKNOWN_CHAR)
1106                         ignored = TRUE;
1107
1108                 if (!ignored && skip_invisible &&
1109                     /* _gtk_text_btree_char_is_invisible (iter)*/ FALSE)
1110                         ignored = TRUE;
1111
1112                 if (!ignored && skip_decomp)
1113                 {
1114                         /* being UTF8 correct sucks; this accounts for extra
1115                            offsets coming from canonical decompositions of
1116                            UTF8 characters (e.g. accented characters) which
1117                            g_utf8_normalize () performs */
1118                         gchar *normal;
1119                         gchar buffer[6];
1120                         gint buffer_len;
1121
1122                         buffer_len = g_unichar_to_utf8 (gtk_text_iter_get_char (iter), buffer);
1123                         normal = g_utf8_normalize (buffer, buffer_len, G_NORMALIZE_NFD);
1124                         i -= (g_utf8_strlen (normal, -1) - 1);
1125                         g_free (normal);
1126                 }
1127
1128                 gtk_text_iter_forward_char (iter);
1129
1130                 if (!ignored)
1131                         --i;
1132         }
1133 }
1134
1135 static gboolean
1136 lines_match (const GtkTextIter *start,
1137              const gchar      **lines,
1138              gboolean           visible_only,
1139              gboolean           slice,
1140              GtkTextIter       *match_start,
1141              GtkTextIter       *match_end)
1142 {
1143         GtkTextIter next;
1144         gchar *line_text;
1145         const gchar *found;
1146         gint offset;
1147
1148         if (*lines == NULL || **lines == '\0')
1149         {
1150                 if (match_start)
1151                         *match_start = *start;
1152                 if (match_end)
1153                         *match_end = *start;
1154                 return TRUE;
1155         }
1156
1157         next = *start;
1158         gtk_text_iter_forward_line (&next);
1159
1160         /* No more text in buffer, but *lines is nonempty */
1161         if (gtk_text_iter_equal (start, &next))
1162                 return FALSE;
1163
1164         if (slice)
1165         {
1166                 if (visible_only)
1167                         line_text = gtk_text_iter_get_visible_slice (start, &next);
1168                 else
1169                         line_text = gtk_text_iter_get_slice (start, &next);
1170         }
1171         else
1172         {
1173                 if (visible_only)
1174                         line_text = gtk_text_iter_get_visible_text (start, &next);
1175                 else
1176                         line_text = gtk_text_iter_get_text (start, &next);
1177         }
1178
1179         if (match_start) /* if this is the first line we're matching */
1180         {
1181                 found = g_utf8_strcasestr (line_text, *lines);
1182         }
1183         else
1184         {
1185                 /* If it's not the first line, we have to match from the
1186                  * start of the line.
1187                  */
1188                 if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text),
1189                                            strlen (*lines)))
1190                         found = line_text;
1191                 else
1192                         found = NULL;
1193         }
1194
1195         if (found == NULL)
1196         {
1197                 g_free (line_text);
1198                 return FALSE;
1199         }
1200
1201         /* Get offset to start of search string */
1202         offset = g_utf8_strlen (line_text, found - line_text);
1203
1204         next = *start;
1205
1206         /* If match start needs to be returned, set it to the
1207          * start of the search string.
1208          */
1209         forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE);
1210         if (match_start)
1211         {
1212                 *match_start = next;
1213         }
1214
1215         /* Go to end of search string */
1216         forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE);
1217
1218         g_free (line_text);
1219
1220         ++lines;
1221
1222         if (match_end)
1223                 *match_end = next;
1224
1225         /* pass NULL for match_start, since we don't need to find the
1226          * start again.
1227          */
1228         return lines_match (&next, lines, visible_only, slice, NULL, match_end);
1229 }
1230
1231 /* strsplit () that retains the delimiter as part of the string. */
1232 static gchar **
1233 strbreakup (const char *string,
1234             const char *delimiter,
1235             gint        max_tokens)
1236 {
1237         GSList *string_list = NULL, *slist;
1238         gchar **str_array, *s, *casefold, *new_string;
1239         guint i, n = 1;
1240
1241         g_return_val_if_fail (string != NULL, NULL);
1242         g_return_val_if_fail (delimiter != NULL, NULL);
1243
1244         if (max_tokens < 1)
1245                 max_tokens = G_MAXINT;
1246
1247         s = strstr (string, delimiter);
1248         if (s)
1249         {
1250                 guint delimiter_len = strlen (delimiter);
1251
1252                 do
1253                 {
1254                         guint len;
1255
1256                         len = s - string + delimiter_len;
1257                         new_string = g_new (gchar, len + 1);
1258                         strncpy (new_string, string, len);
1259                         new_string[len] = 0;
1260                         casefold = g_utf8_casefold (new_string, -1);
1261                         g_free (new_string);
1262                         new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1263                         g_free (casefold);
1264                         string_list = g_slist_prepend (string_list, new_string);
1265                         n++;
1266                         string = s + delimiter_len;
1267                         s = strstr (string, delimiter);
1268                 } while (--max_tokens && s);
1269         }
1270
1271         if (*string)
1272         {
1273                 n++;
1274                 casefold = g_utf8_casefold (string, -1);
1275                 new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1276                 g_free (casefold);
1277                 string_list = g_slist_prepend (string_list, new_string);
1278         }
1279
1280         str_array = g_new (gchar*, n);
1281
1282         i = n - 1;
1283
1284         str_array[i--] = NULL;
1285         for (slist = string_list; slist; slist = slist->next)
1286                 str_array[i--] = slist->data;
1287
1288         g_slist_free (string_list);
1289
1290         return str_array;
1291 }
1292
1293 gboolean
1294 empathy_text_iter_forward_search (const GtkTextIter   *iter,
1295                                  const gchar         *str,
1296                                  GtkTextIter         *match_start,
1297                                  GtkTextIter         *match_end,
1298                                  const GtkTextIter   *limit)
1299 {
1300         gchar **lines = NULL;
1301         GtkTextIter match;
1302         gboolean retval = FALSE;
1303         GtkTextIter search;
1304         gboolean visible_only;
1305         gboolean slice;
1306
1307         g_return_val_if_fail (iter != NULL, FALSE);
1308         g_return_val_if_fail (str != NULL, FALSE);
1309
1310         if (limit && gtk_text_iter_compare (iter, limit) >= 0)
1311                 return FALSE;
1312
1313         if (*str == '\0') {
1314                 /* If we can move one char, return the empty string there */
1315                 match = *iter;
1316
1317                 if (gtk_text_iter_forward_char (&match)) {
1318                         if (limit && gtk_text_iter_equal (&match, limit)) {
1319                                 return FALSE;
1320                         }
1321
1322                         if (match_start) {
1323                                 *match_start = match;
1324                         }
1325                         if (match_end) {
1326                                 *match_end = match;
1327                         }
1328                         return TRUE;
1329                 } else {
1330                         return FALSE;
1331                 }
1332         }
1333
1334         visible_only = TRUE;
1335         slice = FALSE;
1336
1337         /* locate all lines */
1338         lines = strbreakup (str, "\n", -1);
1339
1340         search = *iter;
1341
1342         do {
1343                 /* This loop has an inefficient worst-case, where
1344                  * gtk_text_iter_get_text () is called repeatedly on
1345                  * a single line.
1346                  */
1347                 GtkTextIter end;
1348
1349                 if (limit && gtk_text_iter_compare (&search, limit) >= 0) {
1350                         break;
1351                 }
1352
1353                 if (lines_match (&search, (const gchar**)lines,
1354                                  visible_only, slice, &match, &end)) {
1355                         if (limit == NULL ||
1356                             (limit && gtk_text_iter_compare (&end, limit) <= 0)) {
1357                                 retval = TRUE;
1358
1359                                 if (match_start) {
1360                                         *match_start = match;
1361                                 }
1362                                 if (match_end) {
1363                                         *match_end = end;
1364                                 }
1365                         }
1366                         break;
1367                 }
1368         } while (gtk_text_iter_forward_line (&search));
1369
1370         g_strfreev ((gchar **) lines);
1371
1372         return retval;
1373 }
1374
1375 static const gchar *
1376 g_utf8_strrcasestr (const gchar *haystack, const gchar *needle)
1377 {
1378         gsize needle_len;
1379         gsize haystack_len;
1380         const gchar *ret = NULL;
1381         gchar *p;
1382         gchar *casefold;
1383         gchar *caseless_haystack;
1384         gint i;
1385
1386         g_return_val_if_fail (haystack != NULL, NULL);
1387         g_return_val_if_fail (needle != NULL, NULL);
1388
1389         casefold = g_utf8_casefold (haystack, -1);
1390         caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1391         g_free (casefold);
1392
1393         needle_len = g_utf8_strlen (needle, -1);
1394         haystack_len = g_utf8_strlen (caseless_haystack, -1);
1395
1396         if (needle_len == 0)
1397         {
1398                 ret = (gchar *) haystack;
1399                 goto finally_1;
1400         }
1401
1402         if (haystack_len < needle_len)
1403         {
1404                 ret = NULL;
1405                 goto finally_1;
1406         }
1407
1408         i = haystack_len - needle_len;
1409         p = g_utf8_offset_to_pointer (caseless_haystack, i);
1410         needle_len = strlen (needle);
1411
1412         while (p >= caseless_haystack)
1413         {
1414                 if (strncmp (p, needle, needle_len) == 0)
1415                 {
1416                         ret = pointer_from_offset_skipping_decomp (haystack, i);
1417                         goto finally_1;
1418                 }
1419
1420                 p = g_utf8_prev_char (p);
1421                 i--;
1422         }
1423
1424 finally_1:
1425         g_free (caseless_haystack);
1426
1427         return ret;
1428 }
1429
1430 static gboolean
1431 backward_lines_match (const GtkTextIter *start,
1432                       const gchar      **lines,
1433                       gboolean           visible_only,
1434                       gboolean           slice,
1435                       GtkTextIter       *match_start,
1436                       GtkTextIter       *match_end)
1437 {
1438         GtkTextIter line, next;
1439         gchar *line_text;
1440         const gchar *found;
1441         gint offset;
1442
1443         if (*lines == NULL || **lines == '\0')
1444         {
1445                 if (match_start)
1446                         *match_start = *start;
1447                 if (match_end)
1448                         *match_end = *start;
1449                 return TRUE;
1450         }
1451
1452         line = next = *start;
1453         if (gtk_text_iter_get_line_offset (&next) == 0)
1454         {
1455                 if (!gtk_text_iter_backward_line (&next))
1456                         return FALSE;
1457         }
1458         else
1459                 gtk_text_iter_set_line_offset (&next, 0);
1460
1461         if (slice)
1462         {
1463                 if (visible_only)
1464                         line_text = gtk_text_iter_get_visible_slice (&next, &line);
1465                 else
1466                         line_text = gtk_text_iter_get_slice (&next, &line);
1467         }
1468         else
1469         {
1470                 if (visible_only)
1471                         line_text = gtk_text_iter_get_visible_text (&next, &line);
1472                 else
1473                         line_text = gtk_text_iter_get_text (&next, &line);
1474         }
1475
1476         if (match_start) /* if this is the first line we're matching */
1477         {
1478                 found = g_utf8_strrcasestr (line_text, *lines);
1479         }
1480         else
1481         {
1482                 /* If it's not the first line, we have to match from the
1483                  * start of the line.
1484                  */
1485                 if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text),
1486                                            strlen (*lines)))
1487                         found = line_text;
1488                 else
1489                         found = NULL;
1490         }
1491
1492         if (found == NULL)
1493         {
1494                 g_free (line_text);
1495                 return FALSE;
1496         }
1497
1498         /* Get offset to start of search string */
1499         offset = g_utf8_strlen (line_text, found - line_text);
1500
1501         forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE);
1502
1503         /* If match start needs to be returned, set it to the
1504          * start of the search string.
1505          */
1506         if (match_start)
1507         {
1508                 *match_start = next;
1509         }
1510
1511         /* Go to end of search string */
1512         forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE);
1513
1514         g_free (line_text);
1515
1516         ++lines;
1517
1518         if (match_end)
1519                 *match_end = next;
1520
1521         /* try to match the rest of the lines forward, passing NULL
1522          * for match_start so lines_match will try to match the entire
1523          * line */
1524         return lines_match (&next, lines, visible_only,
1525                             slice, NULL, match_end);
1526 }
1527
1528 gboolean
1529 empathy_text_iter_backward_search (const GtkTextIter   *iter,
1530                                   const gchar         *str,
1531                                   GtkTextIter         *match_start,
1532                                   GtkTextIter         *match_end,
1533                                   const GtkTextIter   *limit)
1534 {
1535         gchar **lines = NULL;
1536         GtkTextIter match;
1537         gboolean retval = FALSE;
1538         GtkTextIter search;
1539         gboolean visible_only;
1540         gboolean slice;
1541
1542         g_return_val_if_fail (iter != NULL, FALSE);
1543         g_return_val_if_fail (str != NULL, FALSE);
1544
1545         if (limit && gtk_text_iter_compare (iter, limit) <= 0)
1546                 return FALSE;
1547
1548         if (*str == '\0')
1549         {
1550                 /* If we can move one char, return the empty string there */
1551                 match = *iter;
1552
1553                 if (gtk_text_iter_backward_char (&match))
1554                 {
1555                         if (limit && gtk_text_iter_equal (&match, limit))
1556                                 return FALSE;
1557
1558                         if (match_start)
1559                                 *match_start = match;
1560                         if (match_end)
1561                                 *match_end = match;
1562                         return TRUE;
1563                 }
1564                 else
1565                 {
1566                         return FALSE;
1567                 }
1568         }
1569
1570         visible_only = TRUE;
1571         slice = TRUE;
1572
1573         /* locate all lines */
1574         lines = strbreakup (str, "\n", -1);
1575
1576         search = *iter;
1577
1578         while (TRUE)
1579         {
1580                 /* This loop has an inefficient worst-case, where
1581                  * gtk_text_iter_get_text () is called repeatedly on
1582                  * a single line.
1583                  */
1584                 GtkTextIter end;
1585
1586                 if (limit && gtk_text_iter_compare (&search, limit) <= 0)
1587                         break;
1588
1589                 if (backward_lines_match (&search, (const gchar**)lines,
1590                                           visible_only, slice, &match, &end))
1591                 {
1592                         if (limit == NULL || (limit &&
1593                                               gtk_text_iter_compare (&end, limit) > 0))
1594                         {
1595                                 retval = TRUE;
1596
1597                                 if (match_start)
1598                                         *match_start = match;
1599                                 if (match_end)
1600                                         *match_end = end;
1601                         }
1602                         break;
1603                 }
1604
1605                 if (gtk_text_iter_get_line_offset (&search) == 0)
1606                 {
1607                         if (!gtk_text_iter_backward_line (&search))
1608                                 break;
1609                 }
1610                 else
1611                 {
1612                         gtk_text_iter_set_line_offset (&search, 0);
1613                 }
1614         }
1615
1616         g_strfreev ((gchar **) lines);
1617
1618         return retval;
1619 }
1620
1621 /* Takes care of moving the window to the current workspace. */
1622 void
1623 empathy_window_present_with_time (GtkWindow *window,
1624                         guint32 timestamp)
1625 {
1626         GdkWindow *gdk_window;
1627
1628         g_return_if_fail (GTK_IS_WINDOW (window));
1629
1630         /* Move the window to the current workspace before trying to show it.
1631          * This is the behaviour people expect when clicking on the statusbar icon. */
1632         gdk_window = gtk_widget_get_window (GTK_WIDGET (window));
1633         if (gdk_window) {
1634                 gint x, y;
1635                 gint w, h;
1636
1637                 /* Has no effect if the WM has viewports, like compiz */
1638                 gdk_x11_window_move_to_current_desktop (gdk_window);
1639
1640                 /* If window is still off-screen, hide it to force it to
1641                  * reposition on the current workspace. */
1642                 gtk_window_get_position (window, &x, &y);
1643                 gtk_window_get_size (window, &w, &h);
1644                 if (!EMPATHY_RECT_IS_ON_SCREEN (x, y, w, h))
1645                         gtk_widget_hide (GTK_WIDGET (window));
1646         }
1647
1648         if (timestamp == GDK_CURRENT_TIME)
1649                 gtk_window_present (window);
1650         else
1651                 gtk_window_present_with_time (window, timestamp);
1652 }
1653
1654 void
1655 empathy_window_present (GtkWindow *window)
1656 {
1657   empathy_window_present_with_time (window, gtk_get_current_event_time ());
1658 }
1659
1660 GtkWindow *
1661 empathy_get_toplevel_window (GtkWidget *widget)
1662 {
1663         GtkWidget *toplevel;
1664
1665         g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
1666
1667         toplevel = gtk_widget_get_toplevel (widget);
1668         if (GTK_IS_WINDOW (toplevel) &&
1669             gtk_widget_is_toplevel (toplevel)) {
1670                 return GTK_WINDOW (toplevel);
1671         }
1672
1673         return NULL;
1674 }
1675
1676 /** empathy_make_absolute_url_len:
1677  * @url: an url
1678  * @len: a length
1679  *
1680  * Same as #empathy_make_absolute_url but for a limited string length
1681  */
1682 gchar *
1683 empathy_make_absolute_url_len (const gchar *url,
1684                                guint len)
1685 {
1686         g_return_val_if_fail (url != NULL, NULL);
1687
1688         if (g_str_has_prefix (url, "ghelp:") ||
1689             g_str_has_prefix (url, "mailto:") ||
1690             strstr (url, ":/")) {
1691                 return g_strndup (url, len);
1692         }
1693
1694         if (strstr (url, "@")) {
1695                 return g_strdup_printf ("mailto:%.*s", len, url);
1696         }
1697
1698         return g_strdup_printf ("http://%.*s", len, url);
1699 }
1700
1701 /** empathy_make_absolute_url:
1702  * @url: an url
1703  *
1704  * The URL opening code can't handle schemeless strings, so we try to be
1705  * smart and add http if there is no scheme or doesn't look like a mail
1706  * address. This should work in most cases, and let us click on strings
1707  * like "www.gnome.org".
1708  *
1709  * Returns: a newly allocated url with proper mailto: or http:// prefix, use
1710  * g_free when your are done with it
1711  */
1712 gchar *
1713 empathy_make_absolute_url (const gchar *url)
1714 {
1715         return empathy_make_absolute_url_len (url, strlen (url));
1716 }
1717
1718 void
1719 empathy_url_show (GtkWidget *parent,
1720                   const char *url)
1721 {
1722         gchar  *real_url;
1723         GError *error = NULL;
1724
1725         g_return_if_fail (parent == NULL || GTK_IS_WIDGET (parent));
1726         g_return_if_fail (url != NULL);
1727
1728         real_url = empathy_make_absolute_url (url);
1729
1730         gtk_show_uri (parent ? gtk_widget_get_screen (parent) : NULL, real_url,
1731                       gtk_get_current_event_time (), &error);
1732
1733         if (error) {
1734                 GtkWidget *dialog;
1735
1736                 dialog = gtk_message_dialog_new (NULL, 0,
1737                                                  GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
1738                                                  _("Unable to open URI"));
1739                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
1740                                                           "%s", error->message);
1741
1742                 g_signal_connect (dialog, "response",
1743                                   G_CALLBACK (gtk_widget_destroy),
1744                                   NULL);
1745                 gtk_window_present (GTK_WINDOW (dialog));
1746
1747                 g_clear_error (&error);
1748         }
1749
1750         g_free (real_url);
1751 }
1752
1753 void
1754 empathy_send_file (EmpathyContact *contact, GFile *file)
1755 {
1756         EmpathyFTFactory *factory;
1757         GtkRecentManager *manager;
1758         gchar *uri;
1759
1760         g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1761         g_return_if_fail (G_IS_FILE (file));
1762
1763         factory = empathy_ft_factory_dup_singleton ();
1764
1765         empathy_ft_factory_new_transfer_outgoing (factory, contact, file,
1766                 empathy_get_current_action_time ());
1767
1768         uri = g_file_get_uri (file);
1769         manager = gtk_recent_manager_get_default ();
1770         gtk_recent_manager_add_item (manager, uri);
1771         g_free (uri);
1772
1773         g_object_unref (factory);
1774 }
1775
1776 void
1777 empathy_send_file_from_uri_list (EmpathyContact *contact, const gchar *uri_list)
1778 {
1779         const gchar *nl;
1780         GFile *file;
1781
1782         /* Only handle a single file for now.  It would be wicked cool to be
1783            able to do multiple files, offering to zip them or whatever like
1784            nautilus-sendto does.  Note that text/uri-list is defined to have
1785            each line terminated by \r\n, but we can be tolerant of applications
1786            that only use \n or don't terminate single-line entries.
1787         */
1788         nl = strstr (uri_list, "\r\n");
1789         if (!nl) {
1790                 nl = strchr (uri_list, '\n');
1791         }
1792         if (nl) {
1793                 gchar *uri = g_strndup (uri_list, nl - uri_list);
1794                 file = g_file_new_for_uri (uri);
1795                 g_free (uri);
1796         }
1797         else {
1798                 file = g_file_new_for_uri (uri_list);
1799         }
1800
1801         empathy_send_file (contact, file);
1802
1803         g_object_unref (file);
1804 }
1805
1806 static void
1807 file_manager_send_file_response_cb (GtkDialog      *widget,
1808                                     gint            response_id,
1809                                     EmpathyContact *contact)
1810 {
1811         GFile *file;
1812
1813         if (response_id == GTK_RESPONSE_OK) {
1814                 file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (widget));
1815
1816                 empathy_send_file (contact, file);
1817
1818                 g_object_unref (file);
1819         }
1820
1821         g_object_unref (contact);
1822         gtk_widget_destroy (GTK_WIDGET (widget));
1823 }
1824
1825 void
1826 empathy_send_file_with_file_chooser (EmpathyContact *contact)
1827 {
1828         GtkWidget               *widget;
1829         GtkWidget               *button;
1830
1831         g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1832
1833         DEBUG ("Creating selection file chooser");
1834
1835         widget = gtk_file_chooser_dialog_new (_("Select a file"),
1836                                               NULL,
1837                                               GTK_FILE_CHOOSER_ACTION_OPEN,
1838                                               GTK_STOCK_CANCEL,
1839                                               GTK_RESPONSE_CANCEL,
1840                                               NULL);
1841
1842         /* send button */
1843         button = gtk_button_new_with_mnemonic (_("_Send"));
1844         gtk_button_set_image (GTK_BUTTON (button),
1845                 gtk_image_new_from_icon_name (EMPATHY_IMAGE_DOCUMENT_SEND,
1846                                               GTK_ICON_SIZE_BUTTON));
1847         gtk_widget_show (button);
1848         gtk_dialog_add_action_widget (GTK_DIALOG (widget), button,
1849                                       GTK_RESPONSE_OK);
1850         gtk_widget_set_can_default (button, TRUE);
1851         gtk_dialog_set_default_response (GTK_DIALOG (widget),
1852                                          GTK_RESPONSE_OK);
1853
1854         gtk_file_chooser_set_local_only (GTK_FILE_CHOOSER (widget), FALSE);
1855
1856         gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (widget),
1857                 g_get_home_dir ());
1858
1859         g_signal_connect (widget, "response",
1860                           G_CALLBACK (file_manager_send_file_response_cb),
1861                           g_object_ref (contact));
1862
1863         gtk_widget_show (widget);
1864 }
1865
1866 static void
1867 file_manager_receive_file_response_cb (GtkDialog *dialog,
1868                                        GtkResponseType response,
1869                                        EmpathyFTHandler *handler)
1870 {
1871         EmpathyFTFactory *factory;
1872         GFile *file;
1873
1874         if (response == GTK_RESPONSE_OK) {
1875                 GFile *parent;
1876                 GFileInfo *info;
1877                 guint64 free_space, file_size;
1878                 GError *error = NULL;
1879
1880                 file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
1881                 parent = g_file_get_parent (file);
1882                 info = g_file_query_filesystem_info (parent,
1883                                 G_FILE_ATTRIBUTE_FILESYSTEM_FREE,
1884                                 NULL, &error);
1885
1886                 g_object_unref (parent);
1887
1888                 if (error != NULL) {
1889                         g_warning ("Error: %s", error->message);
1890
1891                         g_object_unref (file);
1892                         return;
1893                 }
1894
1895                 free_space = g_file_info_get_attribute_uint64 (info,
1896                                 G_FILE_ATTRIBUTE_FILESYSTEM_FREE);
1897                 file_size = empathy_ft_handler_get_total_bytes (handler);
1898
1899                 g_object_unref (info);
1900
1901                 if (file_size > free_space) {
1902                         GtkWidget *message = gtk_message_dialog_new (
1903                                 GTK_WINDOW (dialog),
1904                                 GTK_DIALOG_MODAL,
1905                                 GTK_MESSAGE_ERROR,
1906                                 GTK_BUTTONS_CLOSE,
1907                                 _("Insufficient free space to save file"));
1908                         char *file_size_str, *free_space_str;
1909
1910                         file_size_str = g_format_size_for_display (file_size);
1911                         free_space_str = g_format_size_for_display (free_space);
1912
1913                         gtk_message_dialog_format_secondary_text (
1914                                 GTK_MESSAGE_DIALOG (message),
1915                                 _("%s of free space are required to save this "
1916                                   "file, but only %s is available. Please "
1917                                   "choose another location."),
1918                                 file_size_str, free_space_str);
1919
1920                         gtk_dialog_run (GTK_DIALOG (message));
1921
1922                         g_free (file_size_str);
1923                         g_free (free_space_str);
1924                         gtk_widget_destroy (message);
1925
1926                         g_object_unref (file);
1927
1928                         return;
1929                 }
1930
1931                 factory = empathy_ft_factory_dup_singleton ();
1932
1933                 empathy_ft_factory_set_destination_for_incoming_handler (
1934                                 factory, handler, file);
1935
1936                 g_object_unref (factory);
1937                 g_object_unref (file);
1938         } else {
1939                 /* unref the handler, as we dismissed the file chooser,
1940                  * and refused the transfer.
1941                  */
1942                 g_object_unref (handler);
1943         }
1944
1945         gtk_widget_destroy (GTK_WIDGET (dialog));
1946 }
1947
1948 void
1949 empathy_receive_file_with_file_chooser (EmpathyFTHandler *handler)
1950 {
1951         GtkWidget *widget;
1952         const gchar *dir;
1953         EmpathyContact *contact;
1954         gchar *title;
1955
1956         contact = empathy_ft_handler_get_contact (handler);
1957         g_assert (contact != NULL);
1958
1959         title = g_strdup_printf (_("Incoming file from %s"),
1960                 empathy_contact_get_alias (contact));
1961
1962         widget = gtk_file_chooser_dialog_new (title,
1963                                               NULL,
1964                                               GTK_FILE_CHOOSER_ACTION_SAVE,
1965                                               GTK_STOCK_CANCEL,
1966                                               GTK_RESPONSE_CANCEL,
1967                                               GTK_STOCK_SAVE,
1968                                               GTK_RESPONSE_OK,
1969                                               NULL);
1970         gtk_file_chooser_set_current_name (GTK_FILE_CHOOSER (widget),
1971                 empathy_ft_handler_get_filename (handler));
1972         gtk_file_chooser_set_do_overwrite_confirmation
1973                 (GTK_FILE_CHOOSER (widget), TRUE);
1974
1975         dir = g_get_user_special_dir (G_USER_DIRECTORY_DOWNLOAD);
1976         if (dir == NULL)
1977                 /* Fallback to $HOME if $XDG_DOWNLOAD_DIR is not set */
1978                 dir = g_get_home_dir ();
1979
1980         gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (widget), dir);
1981
1982         g_signal_connect (widget, "response",
1983                 G_CALLBACK (file_manager_receive_file_response_cb), handler);
1984
1985         gtk_widget_show (widget);
1986         g_free (title);
1987 }
1988
1989 void
1990 empathy_make_color_whiter (GdkRGBA *color)
1991 {
1992         const GdkRGBA white = { 1.0, 1.0, 1.0, 1.0 };
1993
1994         color->red = (color->red + white.red) / 2;
1995         color->green = (color->green + white.green) / 2;
1996         color->blue = (color->blue + white.blue) / 2;
1997 }
1998
1999 static void
2000 menu_deactivate_cb (GtkMenu *menu,
2001         gpointer user_data)
2002 {
2003         /* FIXME: we shouldn't have to disconnect the signal (bgo #641327) */
2004         g_signal_handlers_disconnect_by_func (menu,
2005                      menu_deactivate_cb, user_data);
2006
2007         gtk_menu_detach (menu);
2008 }
2009
2010 /* Convenient function to create a GtkMenu attached to @attach_to and detach
2011  * it when the menu is not displayed any more. This is useful when creating a
2012  * context menu that we want to get rid as soon as it as been displayed. */
2013 GtkWidget *
2014 empathy_context_menu_new (GtkWidget *attach_to)
2015 {
2016         GtkWidget *menu;
2017
2018         menu = gtk_menu_new ();
2019
2020         gtk_menu_attach_to_widget (GTK_MENU (menu), attach_to, NULL);
2021
2022         /* menu is initially unowned but gtk_menu_attach_to_widget () taked its
2023          * floating ref. We can either wait that @attach_to releases its ref when
2024          * it will be destroyed (when leaving Empathy most of the time) or explicitely
2025          * detach the menu when it's not displayed any more.
2026          * We go for the latter as we don't want to keep useless menus in memory
2027          * during the whole lifetime of Empathy. */
2028         g_signal_connect (menu, "deactivate", G_CALLBACK (menu_deactivate_cb), NULL);
2029
2030         return menu;
2031 }
2032
2033 gint64
2034 empathy_get_current_action_time (void)
2035 {
2036   return (tp_user_action_time_from_x11 (gtk_get_current_event_time ()));
2037 }
2038
2039 /* @words = empathy_live_search_strip_utf8_string (@text);
2040  *
2041  * User has to pass both so we don't have to compute @words ourself each time
2042  * this function is called. */
2043 gboolean
2044 empathy_individual_match_string (FolksIndividual *individual,
2045     const char *text,
2046     GPtrArray *words)
2047 {
2048   const gchar *str;
2049   GeeSet *personas;
2050   GeeIterator *iter;
2051   gboolean retval = FALSE;
2052
2053   /* check alias name */
2054   str = folks_alias_details_get_alias (FOLKS_ALIAS_DETAILS (individual));
2055
2056   if (empathy_live_search_match_words (str, words))
2057     return TRUE;
2058
2059   personas = folks_individual_get_personas (individual);
2060
2061   /* check contact id, remove the @server.com part */
2062   iter = gee_iterable_iterator (GEE_ITERABLE (personas));
2063   while (retval == FALSE && gee_iterator_next (iter))
2064     {
2065       FolksPersona *persona = gee_iterator_get (iter);
2066       const gchar *p;
2067
2068       if (empathy_folks_persona_is_interesting (persona))
2069         {
2070           str = folks_persona_get_display_id (persona);
2071
2072           /* Accept the persona if @text is a full prefix of his ID; that allows
2073            * user to find, say, a jabber contact by typing his JID. */
2074           if (g_str_has_prefix (str, text))
2075             {
2076               retval = TRUE;
2077             }
2078           else
2079             {
2080               gchar *dup_str = NULL;
2081               gboolean visible;
2082
2083               p = strstr (str, "@");
2084               if (p != NULL)
2085                 str = dup_str = g_strndup (str, p - str);
2086
2087               visible = empathy_live_search_match_words (str, words);
2088               g_free (dup_str);
2089               if (visible)
2090                 retval = TRUE;
2091             }
2092         }
2093       g_clear_object (&persona);
2094     }
2095   g_clear_object (&iter);
2096
2097   /* FIXME: Add more rules here, we could check phone numbers in
2098    * contact's vCard for example. */
2099   return retval;
2100 }
2101
2102 static gboolean
2103 dtmf_dialpad_button_pressed_cb (GObject *button,
2104     GtkEntry *entry)
2105 {
2106   GtkEntryBuffer *buffer = gtk_entry_get_buffer (entry);
2107   const gchar *label;
2108
2109   label = g_object_get_data (button, "label");
2110   gtk_entry_buffer_insert_text (buffer, -1, label, -1);
2111
2112   return FALSE;
2113 }
2114
2115 GtkWidget *
2116 empathy_create_dtmf_dialpad (GObject *self,
2117     GCallback dtmf_button_pressed_cb,
2118     GCallback dtmf_button_released_cb)
2119 {
2120   GtkWidget *box, *entry, *table;
2121   int i;
2122   GQuark button_quark;
2123   struct {
2124     const gchar *label;
2125     const gchar *sublabel;
2126     TpDTMFEvent event;
2127   } dtmfbuttons[] = { { "1", "",     TP_DTMF_EVENT_DIGIT_1 },
2128                       { "2", "abc",  TP_DTMF_EVENT_DIGIT_2 },
2129                       { "3", "def",  TP_DTMF_EVENT_DIGIT_3 },
2130                       { "4", "ghi",  TP_DTMF_EVENT_DIGIT_4 },
2131                       { "5", "jkl",  TP_DTMF_EVENT_DIGIT_5 },
2132                       { "6", "mno",  TP_DTMF_EVENT_DIGIT_6 },
2133                       { "7", "pqrs", TP_DTMF_EVENT_DIGIT_7 },
2134                       { "8", "tuv",  TP_DTMF_EVENT_DIGIT_8 },
2135                       { "9", "wxyz", TP_DTMF_EVENT_DIGIT_9 },
2136                       { "#", "",     TP_DTMF_EVENT_HASH },
2137                       { "0", "",     TP_DTMF_EVENT_DIGIT_0 },
2138                       { "*", "",     TP_DTMF_EVENT_ASTERISK },
2139                       { NULL, } };
2140
2141   box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 3);
2142
2143   entry = gtk_entry_new ();
2144   gtk_editable_set_editable (GTK_EDITABLE (entry), FALSE);
2145
2146   gtk_box_pack_start (GTK_BOX (box), entry, FALSE, FALSE, 3);
2147
2148   button_quark = g_quark_from_static_string (EMPATHY_DTMF_BUTTON_ID);
2149
2150   table = gtk_table_new (4, 3, TRUE);
2151
2152   for (i = 0; dtmfbuttons[i].label != NULL; i++)
2153     {
2154       GtkWidget *vbox = gtk_vbox_new (FALSE, 0);
2155       GtkWidget *button = gtk_button_new ();
2156       GtkWidget *label;
2157       gchar *str;
2158
2159       gtk_container_add (GTK_CONTAINER (button), vbox);
2160
2161       /* main label */
2162       label = gtk_label_new ("");
2163       str = g_strdup_printf ("<span size='x-large'>%s</span>",
2164           dtmfbuttons[i].label);
2165       gtk_label_set_markup (GTK_LABEL (label), str);
2166       g_free (str);
2167
2168       g_object_set_data (G_OBJECT (button), "label",
2169           (gpointer) dtmfbuttons[i].label);
2170
2171       gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 3);
2172
2173       /* sub label */
2174       label = gtk_label_new ("");
2175       str = g_strdup_printf (
2176           "<span foreground='#555555'>%s</span>",
2177           dtmfbuttons[i].sublabel);
2178       gtk_label_set_markup (GTK_LABEL (label), str);
2179       g_free (str);
2180
2181       gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);
2182
2183       gtk_table_attach (GTK_TABLE (table), button, i % 3, i % 3 + 1,
2184         i/3, i/3 + 1, GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 1, 1);
2185
2186       g_object_set_qdata (G_OBJECT (button), button_quark,
2187         GUINT_TO_POINTER (dtmfbuttons[i].event));
2188
2189       /* To update the GtkEntry */
2190       g_signal_connect (G_OBJECT (button), "pressed",
2191         G_CALLBACK (dtmf_dialpad_button_pressed_cb), entry);
2192
2193       g_signal_connect (G_OBJECT (button), "pressed",
2194         dtmf_button_pressed_cb, self);
2195       g_signal_connect (G_OBJECT (button), "released",
2196         dtmf_button_released_cb, self);
2197     }
2198
2199   gtk_box_pack_start (GTK_BOX (box), table, FALSE, FALSE, 3);
2200
2201   return box;
2202 }
2203
2204 void
2205 empathy_launch_program (const gchar *dir,
2206     const gchar *name,
2207     const gchar *args)
2208 {
2209   GdkDisplay *display;
2210   GError *error = NULL;
2211   gchar *path, *cmd;
2212   GAppInfo *app_info;
2213   GdkAppLaunchContext *context = NULL;
2214
2215   /* Try to run from source directory if possible */
2216   path = g_build_filename (g_getenv ("EMPATHY_SRCDIR"), "src",
2217       name, NULL);
2218
2219   if (!g_file_test (path, G_FILE_TEST_EXISTS))
2220     {
2221       g_free (path);
2222       path = g_build_filename (dir, name, NULL);
2223     }
2224
2225   if (args != NULL)
2226     cmd = g_strconcat (path, " ", args, NULL);
2227   else
2228     cmd = g_strdup (path);
2229
2230   app_info = g_app_info_create_from_commandline (cmd, NULL, 0, &error);
2231   if (app_info == NULL)
2232     {
2233       DEBUG ("Failed to create app info: %s", error->message);
2234       g_error_free (error);
2235       goto out;
2236     }
2237
2238   display = gdk_display_get_default ();
2239   context = gdk_display_get_app_launch_context (display);
2240
2241   if (!g_app_info_launch (app_info, NULL, (GAppLaunchContext *) context,
2242       &error))
2243     {
2244       g_warning ("Failed to launch %s: %s", name, error->message);
2245       g_error_free (error);
2246       goto out;
2247     }
2248
2249 out:
2250   tp_clear_object (&app_info);
2251   tp_clear_object (&context);
2252   g_free (path);
2253   g_free (cmd);
2254 }