src/empathy-call-window.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2007 Elliot Fairweather
   4  * Copyright (C) 2007-2008 Collabora Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  * Authors: Elliot Fairweather <elliot.fairweather@collabora.co.uk>
  21  *          Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include <string.h>
  25
  26 #include <glade/glade.h>
  27 #include <glib/gi18n.h>
  28
  29 #include <telepathy-glib/enums.h>
  30
  31 #include <libempathy/empathy-contact.h>
  32 #include <libempathy/empathy-tp-call.h>
  33 #include <libempathy/empathy-tp-group.h>
  34 #include <libempathy/empathy-utils.h>
  35 #include <libempathy-gtk/empathy-ui-utils.h>
  36
  37 #include "empathy-call-window.h"
  38
  39 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  40 #include <libempathy/empathy-debug.h>
  41
  42 typedef struct
  43 {
  44   EmpathyTpCall *call;
  45   GTimeVal start_time;
  46   guint timeout_event_id;
  47   gboolean is_drawing;
  48   guint status;
  49
  50   GtkWidget *window;
  51   GtkWidget *main_hbox;
  52   GtkWidget *controls_vbox;
  53   GtkWidget *volume_hbox;
  54   GtkWidget *status_label;
  55   GtkWidget *input_volume_button;
  56   GtkWidget *output_volume_button;
  57   GtkWidget *preview_video_socket;
  58   GtkWidget *output_video_socket;
  59   GtkWidget *video_button;
  60   GtkWidget *hang_up_button;
  61   GtkWidget *confirmation_dialog;
  62   GtkWidget *keypad_expander;
  63 } EmpathyCallWindow;
  64
  65 static GSList *windows = NULL;
  66
  67 static gboolean
  68 call_window_update_timer (gpointer data)
  69 {
  70   EmpathyCallWindow *window = data;
  71   GTimeVal current;
  72   gchar *str;
  73   glong now, then;
  74   glong time, seconds, minutes, hours;
  75
  76   g_get_current_time (&current);
  77
  78   now = current.tv_sec;
  79   then = (window->start_time).tv_sec;
  80
  81   time = now - then;
  82
  83   seconds = time % 60;
  84   time /= 60;
  85   minutes = time % 60;
  86   time /= 60;
  87   hours = time % 60;
  88
  89   if (hours > 0)
  90       str = g_strdup_printf ("Connected  -  %02ld : %02ld : %02ld", hours,
  91           minutes, seconds);
  92   else
  93       str = g_strdup_printf ("Connected  -  %02ld : %02ld", minutes, seconds);
  94
  95   gtk_label_set_text (GTK_LABEL (window->status_label), str);
  96
  97   g_free (str);
  98
  99   return TRUE;
 100 }
 101
 102 static void
 103 call_window_stop_timeout (EmpathyCallWindow *window)
 104 {
 105   DEBUG ("Timer stopped");
 106
 107   if (window->timeout_event_id)
 108     {
 109       g_source_remove (window->timeout_event_id);
 110       window->timeout_event_id = 0;
 111     }
 112 }
 113
 114 static void
 115 call_window_set_output_video_is_drawing (EmpathyCallWindow *window,
 116                                          gboolean is_drawing)
 117 {
 118   DEBUG ("Setting output video is drawing - %d", is_drawing);
 119
 120   if (is_drawing && !window->is_drawing)
 121     {
 122       gtk_window_set_resizable (GTK_WINDOW (window->window), TRUE);
 123       gtk_box_pack_end (GTK_BOX (window->main_hbox),
 124           window->output_video_socket, TRUE, TRUE, 0);
 125       empathy_tp_call_add_output_video (window->call,
 126           gtk_socket_get_id (GTK_SOCKET (window->output_video_socket)));
 127     }
 128   if (!is_drawing && window->is_drawing)
 129     {
 130       gtk_window_set_resizable (GTK_WINDOW (window->window), FALSE);
 131       empathy_tp_call_add_output_video (window->call, 0);
 132       gtk_container_remove (GTK_CONTAINER (window->main_hbox),
 133           window->output_video_socket);
 134     }
 135
 136   window->is_drawing = is_drawing;
 137 }
 138
 139 static void
 140 call_window_finalize (EmpathyCallWindow *window)
 141 {
 142   gtk_label_set_text (GTK_LABEL (window->status_label), _("Closed"));
 143   gtk_widget_set_sensitive (window->hang_up_button, FALSE);
 144   gtk_widget_set_sensitive (window->video_button, FALSE);
 145   gtk_widget_set_sensitive (window->output_volume_button, FALSE);
 146   gtk_widget_set_sensitive (window->input_volume_button, FALSE);
 147   gtk_widget_set_sensitive (window->keypad_expander, FALSE);
 148
 149   if (window->call)
 150     {
 151       call_window_stop_timeout (window);
 152       call_window_set_output_video_is_drawing (window, FALSE);
 153       empathy_tp_call_remove_preview_video (window->call,
 154           gtk_socket_get_id (GTK_SOCKET (window->preview_video_socket)));
 155       g_object_unref (window->call);
 156       window->call = NULL;
 157     }
 158
 159   if (window->confirmation_dialog)
 160       gtk_widget_destroy (window->confirmation_dialog);
 161 }
 162
 163 static void
 164 call_window_socket_realized_cb (GtkWidget *widget,
 165                                 EmpathyCallWindow *window)
 166 {
 167   if (widget == window->preview_video_socket)
 168     {
 169       DEBUG ("Preview socket realized");
 170       empathy_tp_call_add_preview_video (window->call,
 171           gtk_socket_get_id (GTK_SOCKET (window->preview_video_socket)));
 172     }
 173   else
 174       DEBUG ("Output socket realized");
 175 }
 176
 177 static void
 178 call_window_video_button_toggled_cb (GtkWidget *button,
 179                                      EmpathyCallWindow *window)
 180 {
 181   gboolean is_sending;
 182   guint status;
 183
 184   is_sending = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button));
 185
 186   DEBUG ("Send video toggled - %d", is_sending);
 187
 188   g_object_get (window->call, "status", &status, NULL);
 189   if (status == EMPATHY_TP_CALL_STATUS_ACCEPTED)
 190       empathy_tp_call_request_video_stream_direction (window->call, is_sending);
 191 }
 192
 193 static void
 194 call_window_hang_up_button_clicked_cb (GtkWidget *widget,
 195                                        EmpathyCallWindow *window)
 196 {
 197   DEBUG ("Call clicked, end call");
 198   call_window_finalize (window);
 199 }
 200
 201 static void
 202 call_window_output_volume_changed_cb (GtkScaleButton *button,
 203                                       gdouble value,
 204                                       EmpathyCallWindow *window)
 205 {
 206   if (!window->call)
 207       return;
 208
 209   if (value <= 0)
 210       empathy_tp_call_mute_output (window->call, TRUE);
 211   else
 212     {
 213       empathy_tp_call_mute_output (window->call, FALSE);
 214       empathy_tp_call_set_output_volume (window->call, value * 100);
 215     }
 216 }
 217
 218 static void
 219 call_window_input_volume_changed_cb (GtkScaleButton    *button,
 220                                      gdouble            value,
 221                                      EmpathyCallWindow *window)
 222 {
 223   if (!window->call)
 224       return;
 225
 226   if (value <= 0)
 227       empathy_tp_call_mute_input (window->call, TRUE);
 228   else
 229     {
 230       empathy_tp_call_mute_input (window->call, FALSE);
 231       /* FIXME: Not implemented?
 232       empathy_tp_call_set_input_volume (window->call, value * 100);*/
 233     }
 234 }
 235
 236 static gboolean
 237 call_window_delete_event_cb (GtkWidget *widget,
 238                              GdkEvent *event,
 239                              EmpathyCallWindow *window)
 240 {
 241   GtkWidget *dialog;
 242   gint result;
 243   guint status = EMPATHY_TP_CALL_STATUS_CLOSED;
 244
 245   DEBUG ("Delete event occurred");
 246
 247   if (window->call)
 248       g_object_get (window->call, "status", &status, NULL);
 249
 250   if (status == EMPATHY_TP_CALL_STATUS_ACCEPTED)
 251     {
 252       dialog = gtk_message_dialog_new (GTK_WINDOW (window->window),
 253           GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
 254           GTK_MESSAGE_WARNING, GTK_BUTTONS_CANCEL, _("End this call?"));
 255       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 256           _("Closing this window will end the call in progress."));
 257       gtk_dialog_add_button (GTK_DIALOG (dialog), _("_End Call"), GTK_RESPONSE_OK);
 258       gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
 259
 260       result = gtk_dialog_run (GTK_DIALOG (dialog));
 261       gtk_widget_destroy (dialog);
 262
 263       if (result != GTK_RESPONSE_OK)
 264           return TRUE;
 265     }
 266
 267   return FALSE;
 268 }
 269
 270 static void
 271 call_window_destroy_cb (GtkWidget *widget,
 272                         EmpathyCallWindow *window)
 273 {
 274   call_window_finalize (window);
 275
 276   g_object_unref (window->output_video_socket);
 277   g_object_unref (window->preview_video_socket);
 278
 279   windows = g_slist_remove (windows, window);
 280   g_slice_free (EmpathyCallWindow, window);
 281 }
 282
 283 static void
 284 call_window_confirmation_dialog_response_cb (GtkDialog *dialog,
 285                                              gint response,
 286                                              EmpathyCallWindow *window)
 287 {
 288   if (response == GTK_RESPONSE_OK && window->call)
 289       empathy_tp_call_accept_incoming_call (window->call);
 290   else
 291       call_window_finalize (window);
 292
 293   gtk_widget_destroy (window->confirmation_dialog);
 294   window->confirmation_dialog = NULL;
 295 }
 296
 297 static void
 298 call_window_show_confirmation_dialog (EmpathyCallWindow *window)
 299 {
 300   EmpathyContact *contact;
 301   GtkWidget *button;
 302   GtkWidget *image;
 303
 304   if (window->confirmation_dialog)
 305       return;
 306
 307   g_object_get (window->call, "contact", &contact, NULL);
 308
 309   window->confirmation_dialog = gtk_message_dialog_new (GTK_WINDOW (window->window),
 310       GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
 311       GTK_MESSAGE_QUESTION, GTK_BUTTONS_NONE, _("Incoming call"));
 312   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (window->confirmation_dialog),
 313       _("%s is calling you, do you want to answer?"),
 314       empathy_contact_get_name (contact));
 315   gtk_dialog_set_default_response (GTK_DIALOG (window->confirmation_dialog),
 316       GTK_RESPONSE_OK);
 317
 318   button = gtk_dialog_add_button (GTK_DIALOG (window->confirmation_dialog),
 319       _("_Reject"), GTK_RESPONSE_CANCEL);
 320   image = gtk_image_new_from_icon_name (GTK_STOCK_CANCEL, GTK_ICON_SIZE_BUTTON);
 321   gtk_button_set_image (GTK_BUTTON (button), image);
 322
 323   button = gtk_dialog_add_button (GTK_DIALOG (window->confirmation_dialog),
 324       _("_Answer"), GTK_RESPONSE_OK);
 325   image = gtk_image_new_from_icon_name (GTK_STOCK_APPLY, GTK_ICON_SIZE_BUTTON);
 326   gtk_button_set_image (GTK_BUTTON (button), image);
 327
 328   g_signal_connect (window->confirmation_dialog, "response",
 329       G_CALLBACK (call_window_confirmation_dialog_response_cb),
 330       window);
 331
 332   gtk_widget_show (window->confirmation_dialog);
 333   g_object_unref (contact);
 334 }
 335
 336 static void
 337 call_window_update (EmpathyCallWindow *window)
 338 {
 339   EmpathyContact *contact;
 340   guint stream_state;
 341   EmpathyTpCallStream *audio_stream;
 342   EmpathyTpCallStream *video_stream;
 343   gboolean is_incoming;
 344   gchar *title;
 345
 346   g_object_get (window->call,
 347       "status", &window->status,
 348       "audio-stream", &audio_stream,
 349       "video-stream", &video_stream,
 350       "contact", &contact,
 351       "is-incoming", &is_incoming,
 352       NULL);
 353
 354   if (video_stream->state > audio_stream->state)
 355       stream_state = video_stream->state;
 356   else
 357       stream_state = audio_stream->state;
 358
 359   DEBUG ("Status changed - status: %d, stream state: %d, "
 360       "is-incoming: %d video-stream direction: %d",
 361       window->status, stream_state, is_incoming, video_stream->direction);
 362
 363   if (empathy_tp_call_has_dtmf (window->call))
 364     {
 365       gtk_widget_show (window->keypad_expander);
 366     }
 367   else
 368     {
 369       gtk_widget_hide (window->keypad_expander);
 370     }
 371
 372   /* Depending on the status we have to set:
 373    * - window's title
 374    * - status's label
 375    * - sensibility of all buttons
 376    * */
 377   if (window->status == EMPATHY_TP_CALL_STATUS_READYING)
 378     {
 379       gtk_window_set_title (GTK_WINDOW (window->window), _("Empathy Call"));
 380       /* To translators: Readying is the first state of the call, it is
 381        * preparing the connection and it does not yet ring. */
 382       gtk_label_set_text (GTK_LABEL (window->status_label), _("Readying"));
 383       gtk_widget_set_sensitive (window->video_button, FALSE);
 384       gtk_widget_set_sensitive (window->output_volume_button, FALSE);
 385       gtk_widget_set_sensitive (window->input_volume_button, FALSE);
 386       gtk_widget_set_sensitive (window->hang_up_button, FALSE);
 387       gtk_widget_set_sensitive (window->keypad_expander, FALSE);
 388     }
 389   else if (window->status == EMPATHY_TP_CALL_STATUS_PENDING)
 390     {
 391       title = g_strdup_printf (_("%s - Empathy Call"),
 392           empathy_contact_get_name (contact));
 393
 394       gtk_window_set_title (GTK_WINDOW (window->window), title);
 395       gtk_label_set_text (GTK_LABEL (window->status_label), _("Ringing"));
 396       gtk_widget_set_sensitive (window->hang_up_button, TRUE);
 397       if (is_incoming)
 398           call_window_show_confirmation_dialog (window);
 399     }
 400   else if (window->status == EMPATHY_TP_CALL_STATUS_ACCEPTED)
 401     {
 402       gboolean receiving_video;
 403       gboolean sending_video;
 404
 405       if (stream_state == TP_MEDIA_STREAM_STATE_DISCONNECTED)
 406           gtk_label_set_text (GTK_LABEL (window->status_label), _("Disconnected"));
 407       if (stream_state == TP_MEDIA_STREAM_STATE_CONNECTING)
 408           gtk_label_set_text (GTK_LABEL (window->status_label), _("Connecting"));
 409       else if (stream_state == TP_MEDIA_STREAM_STATE_CONNECTED &&
 410                window->timeout_event_id == 0)
 411         {
 412           /* The call started, launch the timer */
 413           g_get_current_time (&(window->start_time));
 414           window->timeout_event_id = g_timeout_add_seconds (1,
 415               call_window_update_timer, window);
 416           call_window_update_timer (window);
 417         }
 418
 419       receiving_video = video_stream->direction & TP_MEDIA_STREAM_DIRECTION_RECEIVE;
 420       sending_video = video_stream->direction & TP_MEDIA_STREAM_DIRECTION_SEND;
 421       call_window_set_output_video_is_drawing (window, receiving_video);
 422       g_signal_handlers_block_by_func (window->video_button,
 423           call_window_video_button_toggled_cb, window);
 424       gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (window->video_button),
 425           sending_video);
 426       g_signal_handlers_unblock_by_func (window->video_button,
 427           call_window_video_button_toggled_cb, window);
 428
 429       gtk_widget_set_sensitive (window->video_button, TRUE);
 430       gtk_widget_set_sensitive (window->output_volume_button, TRUE);
 431       gtk_widget_set_sensitive (window->input_volume_button, TRUE);
 432       gtk_widget_set_sensitive (window->hang_up_button, TRUE);
 433       gtk_widget_set_sensitive (window->keypad_expander, TRUE);
 434     }
 435   else if (window->status == EMPATHY_TP_CALL_STATUS_CLOSED)
 436       call_window_finalize (window);
 437
 438   if (contact)
 439       g_object_unref (contact);
 440 }
 441
 442 static gboolean
 443 call_window_dtmf_button_release_event_cb (GtkWidget *widget,
 444                                           GdkEventButton *event,
 445                                           EmpathyCallWindow *window)
 446 {
 447   empathy_tp_call_stop_tone (window->call);
 448   return FALSE;
 449 }
 450
 451 static gboolean
 452 call_window_dtmf_button_press_event_cb (GtkWidget *widget,
 453                                         GdkEventButton *event,
 454                                         EmpathyCallWindow *window)
 455 {
 456   TpDTMFEvent dtmf_event;
 457
 458   dtmf_event = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (widget), "code"));
 459   empathy_tp_call_start_tone (window->call, dtmf_event);
 460   return FALSE;
 461 }
 462
 463 static void
 464 call_window_dtmf_connect (GladeXML *glade,
 465                           EmpathyCallWindow *window,
 466                           const gchar *name,
 467                           TpDTMFEvent event)
 468 {
 469   GtkWidget *widget;
 470
 471   widget = glade_xml_get_widget (glade, name);
 472   g_object_set_data (G_OBJECT (widget), "code", GUINT_TO_POINTER (event));
 473   g_signal_connect (widget, "button-press-event",
 474       G_CALLBACK (call_window_dtmf_button_press_event_cb), window);
 475   g_signal_connect (widget, "button-release-event",
 476       G_CALLBACK (call_window_dtmf_button_release_event_cb), window);
 477   /* FIXME: Connect "key-[press/release]-event" to*/
 478 }
 479
 480 GtkWidget *
 481 empathy_call_window_new (TpChannel *channel)
 482 {
 483   EmpathyCallWindow *window;
 484   GladeXML *glade;
 485   gchar *filename;
 486   const gchar *icons[] = {"audio-input-microphone", NULL};
 487
 488   g_return_val_if_fail (TP_IS_CHANNEL (channel), NULL);
 489
 490   if (windows)
 491     {
 492       window = (EmpathyCallWindow*) windows->data;
 493       if (!window->call)
 494         {
 495           window->call = empathy_tp_call_new (channel);
 496           g_signal_connect_swapped (G_OBJECT (window->call), "notify",
 497               G_CALLBACK (call_window_update), window);
 498           call_window_update (window);
 499
 500           if (GTK_WIDGET_REALIZED (GTK_WIDGET (window->preview_video_socket)))
 501             {
 502               call_window_socket_realized_cb (window->preview_video_socket,
 503                   window);
 504             }
 505         }
 506       else
 507         {
 508           GtkWidget *dialog;
 509           EmpathyContact *contact;
 510           EmpathyTpGroup *tp_group;
 511
 512           tp_group = empathy_tp_group_new (channel);
 513           empathy_run_until_ready (tp_group);
 514           empathy_tp_group_get_invitation (tp_group, &contact);
 515           empathy_contact_run_until_ready (contact, EMPATHY_CONTACT_READY_NAME,
 516               NULL);
 517
 518           /* We don't want to have multiple calls running.
 519            * FIXME: We should use the hold interface... */
 520           tp_cli_channel_call_close (channel, -1, NULL, NULL, NULL, NULL);
 521
 522           dialog = gtk_message_dialog_new (NULL, 0, GTK_MESSAGE_INFO,
 523               GTK_BUTTONS_CLOSE,
 524               _("Incoming call from %s rejected because there is already a"
 525                 " running call."), empathy_contact_get_name (contact));
 526
 527           g_object_unref (contact);
 528           g_object_unref (tp_group);
 529
 530           g_signal_connect (dialog, "response", G_CALLBACK (gtk_widget_destroy),
 531               NULL);
 532           gtk_widget_show (dialog);
 533         }
 534
 535       gtk_window_present (GTK_WINDOW (window->window));
 536       return window->window;
 537     }
 538
 539   window = g_slice_new0 (EmpathyCallWindow);
 540   windows = g_slist_prepend (windows, window);
 541   window->call = empathy_tp_call_new (channel);
 542
 543   filename = empathy_file_lookup ("empathy-call-window.glade", "src");
 544   glade = empathy_glade_get_file (filename,
 545       "window",
 546       NULL,
 547       "window", &window->window,
 548       "main_hbox", &window->main_hbox,
 549       "controls_vbox", &window->controls_vbox,
 550       "volume_hbox", &window->volume_hbox,
 551       "status_label", &window->status_label,
 552       "video_button", &window->video_button,
 553       "hang_up_button", &window->hang_up_button,
 554       "keypad_expander", &window->keypad_expander,
 555       NULL);
 556   g_free (filename);
 557
 558   empathy_glade_connect (glade,
 559       window,
 560       "window", "destroy", call_window_destroy_cb,
 561       "window", "delete_event", call_window_delete_event_cb,
 562       "hang_up_button", "clicked", call_window_hang_up_button_clicked_cb,
 563       "video_button", "toggled", call_window_video_button_toggled_cb,
 564       NULL);
 565
 566   /* Setup DTMF buttons */
 567   call_window_dtmf_connect (glade, window, "button_0", TP_DTMF_EVENT_DIGIT_0);
 568   call_window_dtmf_connect (glade, window, "button_1", TP_DTMF_EVENT_DIGIT_1);
 569   call_window_dtmf_connect (glade, window, "button_2", TP_DTMF_EVENT_DIGIT_2);
 570   call_window_dtmf_connect (glade, window, "button_3", TP_DTMF_EVENT_DIGIT_3);
 571   call_window_dtmf_connect (glade, window, "button_4", TP_DTMF_EVENT_DIGIT_4);
 572   call_window_dtmf_connect (glade, window, "button_5", TP_DTMF_EVENT_DIGIT_5);
 573   call_window_dtmf_connect (glade, window, "button_6", TP_DTMF_EVENT_DIGIT_6);
 574   call_window_dtmf_connect (glade, window, "button_7", TP_DTMF_EVENT_DIGIT_7);
 575   call_window_dtmf_connect (glade, window, "button_8", TP_DTMF_EVENT_DIGIT_8);
 576   call_window_dtmf_connect (glade, window, "button_9", TP_DTMF_EVENT_DIGIT_9);
 577   call_window_dtmf_connect (glade, window, "button_asterisk", TP_DTMF_EVENT_ASTERISK);
 578   call_window_dtmf_connect (glade, window, "button_hash", TP_DTMF_EVENT_HASH);
 579
 580   g_object_unref (glade);
 581
 582   /* Output volume button */
 583   window->output_volume_button = gtk_volume_button_new ();
 584   gtk_scale_button_set_value (GTK_SCALE_BUTTON (window->output_volume_button), 1);
 585   gtk_box_pack_start (GTK_BOX (window->volume_hbox),
 586       window->output_volume_button, FALSE, FALSE, 0);
 587   gtk_widget_show (window->output_volume_button);
 588   g_signal_connect (window->output_volume_button, "value-changed",
 589       G_CALLBACK (call_window_output_volume_changed_cb), window);
 590
 591   /* Input volume button */
 592   window->input_volume_button = gtk_volume_button_new ();
 593   gtk_scale_button_set_icons (GTK_SCALE_BUTTON (window->input_volume_button),
 594       icons);
 595   gtk_scale_button_set_value (GTK_SCALE_BUTTON (window->input_volume_button), 1);
 596   gtk_box_pack_start (GTK_BOX (window->volume_hbox),
 597       window->input_volume_button, FALSE, FALSE, 0);
 598   gtk_widget_show (window->input_volume_button);
 599   g_signal_connect (window->input_volume_button, "value-changed",
 600       G_CALLBACK (call_window_input_volume_changed_cb), window);
 601
 602   /* Output video socket */
 603   window->output_video_socket = g_object_ref (gtk_socket_new ());
 604   gtk_widget_set_size_request (window->output_video_socket, 400, 300);
 605   g_signal_connect (GTK_OBJECT (window->output_video_socket), "realize",
 606       G_CALLBACK (call_window_socket_realized_cb), window);
 607   gtk_widget_show (window->output_video_socket);
 608
 609   /* Preview video socket */
 610   window->preview_video_socket = g_object_ref (gtk_socket_new ());
 611   gtk_widget_set_size_request (window->preview_video_socket, 176, 144);
 612   g_signal_connect (GTK_OBJECT (window->preview_video_socket), "realize",
 613       G_CALLBACK (call_window_socket_realized_cb), window);
 614   gtk_widget_show (window->preview_video_socket);
 615
 616   /* FIXME: We shouldn't do this if there is no video input */
 617   gtk_box_pack_start (GTK_BOX (window->controls_vbox),
 618       window->preview_video_socket, FALSE, FALSE, 0);
 619   gtk_box_reorder_child (GTK_BOX (window->controls_vbox),
 620       window->preview_video_socket, 0);
 621
 622   g_signal_connect_swapped (G_OBJECT (window->call), "notify",
 623       G_CALLBACK (call_window_update),
 624       window);
 625
 626   call_window_update (window);
 627   gtk_widget_show (window->window);
 628
 629   return window->window;
 630 }
 631