src/empathy-camera-menu.c

   1 /*
   2  * Copyright (C) 2011 Collabora Ltd.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  *
  18  * GtkAction code based on gnome-terminal's TerminalTabsMenu object.
  19  * Thanks guys!
  20  */
  21
  22 #include "config.h"
  23 #include "empathy-camera-menu.h"
  24
  25 #include <tp-account-widgets/tpaw-camera-monitor.h>
  26
  27 #include "empathy-gsettings.h"
  28
  29 #define DEBUG_FLAG EMPATHY_DEBUG_VOIP
  30 #include "empathy-debug.h"
  31
  32 struct _EmpathyCameraMenuPrivate
  33 {
  34   /* Borrowed ref; the call window actually owns us. */
  35   EmpathyCallWindow *window;
  36
  37   /* Given away ref; the call window's UI manager now owns this. */
  38   GtkActionGroup *action_group;
  39
  40   /* An invisible radio action so new cameras are always in the
  41    * same radio group. */
  42   GtkAction *anchor_action;
  43
  44   /* The merge ID used with the UI manager. We need to keep this
  45    * around so in _clean we can remove all the items we've added
  46    * before and start again. */
  47   guint ui_id;
  48
  49   /* TRUE if we're in _update and so calling _set_active. */
  50   gboolean in_update;
  51
  52   /* Queue of GtkRadioActions. */
  53   GQueue *cameras;
  54
  55   TpawCameraMonitor *camera_monitor;
  56
  57   GSettings *settings;
  58 };
  59
  60 G_DEFINE_TYPE (EmpathyCameraMenu, empathy_camera_menu, G_TYPE_OBJECT);
  61
  62 enum
  63 {
  64   PROP_WINDOW = 1,
  65 };
  66
  67 static void empathy_camera_menu_update (EmpathyCameraMenu *self);
  68
  69 static void
  70 empathy_camera_menu_init (EmpathyCameraMenu *self)
  71 {
  72   self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
  73     EMPATHY_TYPE_CAMERA_MENU, EmpathyCameraMenuPrivate);
  74 }
  75
  76 static void
  77 empathy_camera_menu_set_property (GObject *object,
  78     guint property_id,
  79     const GValue *value,
  80     GParamSpec *pspec)
  81 {
  82   EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (object);
  83
  84   switch (property_id)
  85     {
  86       case PROP_WINDOW:
  87         self->priv->window = g_value_get_object (value);
  88         break;
  89       default:
  90         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
  91     }
  92 }
  93
  94 static void
  95 empathy_camera_menu_get_property (GObject *object,
  96     guint property_id,
  97     GValue *value,
  98     GParamSpec *pspec)
  99 {
 100   EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (object);
 101
 102   switch (property_id)
 103     {
 104       case PROP_WINDOW:
 105         g_value_set_object (value, self->priv->window);
 106         break;
 107       default:
 108         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 109     }
 110 }
 111
 112 static void
 113 empathy_camera_menu_clean (EmpathyCameraMenu *self)
 114 {
 115   GtkUIManager *ui_manager;
 116
 117   if (self->priv->ui_id == 0)
 118     return;
 119
 120   ui_manager = empathy_call_window_get_ui_manager (self->priv->window);
 121
 122   gtk_ui_manager_remove_ui (ui_manager, self->priv->ui_id);
 123   gtk_ui_manager_ensure_update (ui_manager);
 124   self->priv->ui_id = 0;
 125 }
 126
 127 static void
 128 empathy_camera_menu_activate_cb (GtkAction *action,
 129     EmpathyCameraMenu *self)
 130 {
 131   EmpathyGstVideoSrc *video;
 132   const gchar *device;
 133   gchar *current_device = NULL;
 134
 135   if (self->priv->in_update)
 136     return;
 137
 138   video = empathy_call_window_get_video_src (self->priv->window);
 139   if (video != NULL)
 140     current_device = empathy_video_src_dup_device (video);
 141
 142   device = gtk_action_get_name (action);
 143
 144   /* Don't change the device if it's the currently used one */
 145   if (!tp_strdiff (device, current_device))
 146     goto out;
 147
 148   empathy_call_window_change_webcam (self->priv->window, device);
 149
 150  out:
 151   g_free (current_device);
 152 }
 153
 154 static void
 155 empathy_camera_menu_update (EmpathyCameraMenu *self)
 156 {
 157   GList *l;
 158   GtkAction *menu;
 159   GtkUIManager *ui_manager;
 160   EmpathyGstVideoSrc *video;
 161   gboolean show_menu;
 162   gchar *current_camera = NULL;
 163   guint n_cameras;
 164
 165   ui_manager = empathy_call_window_get_ui_manager (self->priv->window);
 166
 167   menu = gtk_ui_manager_get_action (ui_manager, "/menubar1/edit/menucamera");
 168   n_cameras = g_queue_get_length (self->priv->cameras);
 169   show_menu = (n_cameras > 1);
 170   gtk_action_set_visible (menu, show_menu);
 171
 172   video = empathy_call_window_get_video_src (self->priv->window);
 173   if (video != NULL)
 174     current_camera = empathy_video_src_dup_device (video);
 175
 176   empathy_camera_menu_clean (self);
 177   self->priv->ui_id = gtk_ui_manager_new_merge_id (ui_manager);
 178
 179   for (l = self->priv->cameras->head; l != NULL; l = g_list_next (l))
 180     {
 181       GtkRadioAction *action = l->data;
 182       const gchar *name = gtk_action_get_name (GTK_ACTION (action));
 183
 184       if (!tp_strdiff (current_camera, name))
 185         {
 186           self->priv->in_update = TRUE;
 187           gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
 188           self->priv->in_update = FALSE;
 189         }
 190
 191       gtk_ui_manager_add_ui (ui_manager, self->priv->ui_id,
 192           /* TODO: this should probably be passed from the call
 193            * window, seeing that it's a reference to
 194            * empathy-call-window.ui. */
 195           "/menubar1/edit/menucamera",
 196           name, name, GTK_UI_MANAGER_MENUITEM, FALSE);
 197     }
 198
 199   g_free (current_camera);
 200 }
 201
 202 static void
 203 empathy_camera_menu_add_camera (EmpathyCameraMenu *self,
 204     TpawCamera *camera)
 205 {
 206   GtkRadioAction *action;
 207   GSList *group;
 208
 209   action = gtk_radio_action_new (camera->device, camera->name, NULL, NULL, 0);
 210   gtk_action_group_add_action (self->priv->action_group, GTK_ACTION (action));
 211
 212   group = gtk_radio_action_get_group (
 213       GTK_RADIO_ACTION (self->priv->anchor_action));
 214   gtk_radio_action_set_group (GTK_RADIO_ACTION (action), group);
 215
 216   g_queue_push_tail (self->priv->cameras, action);
 217
 218   g_signal_connect (action, "activate",
 219       G_CALLBACK (empathy_camera_menu_activate_cb), self);
 220 }
 221
 222 static void
 223 empathy_camera_menu_camera_added_cb (TpawCameraMonitor *monitor,
 224     TpawCamera *camera,
 225     EmpathyCameraMenu *self)
 226 {
 227   empathy_camera_menu_add_camera (self, camera);
 228   empathy_camera_menu_update (self);
 229 }
 230
 231 static void
 232 empathy_camera_menu_camera_removed_cb (TpawCameraMonitor *monitor,
 233     TpawCamera *camera,
 234     EmpathyCameraMenu *self)
 235 {
 236   GList *l;
 237
 238   for (l = self->priv->cameras->head; l != NULL; l = g_list_next (l))
 239     {
 240       GtkAction *action = l->data;
 241       const gchar *device;
 242
 243       device = gtk_action_get_name (action);
 244
 245       if (tp_strdiff (device, camera->device))
 246         continue;
 247
 248       g_signal_handlers_disconnect_by_func (action,
 249           G_CALLBACK (empathy_camera_menu_activate_cb), self);
 250
 251       gtk_action_group_remove_action (self->priv->action_group,
 252           action);
 253       g_queue_remove (self->priv->cameras, action);
 254       break;
 255     }
 256
 257   empathy_camera_menu_update (self);
 258 }
 259
 260 static void
 261 empathy_camera_menu_prefs_camera_changed_cb (GSettings *settings,
 262     gchar *key,
 263     EmpathyCameraMenu *self)
 264 {
 265   gchar *device = g_settings_get_string (settings, key);
 266   GtkRadioAction *action = NULL;
 267   gboolean found = FALSE;
 268   GList *l;
 269
 270   for (l = self->priv->cameras->head; l != NULL; l = g_list_next (l))
 271     {
 272       const gchar *name;
 273
 274       action = l->data;
 275       name = gtk_action_get_name (GTK_ACTION (action));
 276
 277       if (!tp_strdiff (device, name))
 278         {
 279           found = TRUE;
 280           break;
 281         }
 282     }
 283
 284   /* If the selected camera isn't found, we connect the first
 285    * available one */
 286   if (!found && self->priv->cameras->head != NULL)
 287     action = self->priv->cameras->head->data;
 288
 289   if (action != NULL &&
 290       !gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)))
 291     {
 292       g_signal_handlers_block_by_func (settings,
 293           empathy_camera_menu_prefs_camera_changed_cb, self);
 294       gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
 295       g_signal_handlers_unblock_by_func (settings,
 296           empathy_camera_menu_prefs_camera_changed_cb, self);
 297     }
 298
 299   g_free (device);
 300 }
 301
 302 static void
 303 empathy_camera_menu_get_cameras (EmpathyCameraMenu *self)
 304 {
 305   const GList *cameras;
 306
 307   cameras = tpaw_camera_monitor_get_cameras (self->priv->camera_monitor);
 308
 309   for (; cameras != NULL; cameras = g_list_next (cameras))
 310     {
 311       TpawCamera *camera = cameras->data;
 312
 313       empathy_camera_menu_add_camera (self, camera);
 314     }
 315
 316   empathy_camera_menu_update (self);
 317
 318   /* Do as if the gsettings key had changed, so we select the key that
 319    * was last set. */
 320   empathy_camera_menu_prefs_camera_changed_cb (self->priv->settings,
 321       EMPATHY_PREFS_CALL_CAMERA_DEVICE, self);
 322 }
 323
 324 static void
 325 empathy_camera_menu_constructed (GObject *obj)
 326 {
 327   EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (obj);
 328   GtkUIManager *ui_manager;
 329
 330   g_assert (EMPATHY_IS_CALL_WINDOW (self->priv->window));
 331
 332   ui_manager = empathy_call_window_get_ui_manager (self->priv->window);
 333
 334   g_assert (GTK_IS_UI_MANAGER (ui_manager));
 335
 336   /* Okay let's go go go. */
 337
 338   self->priv->action_group = gtk_action_group_new ("EmpathyCameraMenu");
 339   gtk_ui_manager_insert_action_group (ui_manager, self->priv->action_group, -1);
 340   /* the UI manager now owns this */
 341   g_object_unref (self->priv->action_group);
 342
 343   self->priv->anchor_action = g_object_new (GTK_TYPE_RADIO_ACTION,
 344       "name", "EmpathyCameraMenuAnchorAction",
 345       NULL);
 346   gtk_action_group_add_action (self->priv->action_group,
 347       self->priv->anchor_action);
 348   g_object_unref (self->priv->anchor_action);
 349
 350   self->priv->camera_monitor = tpaw_camera_monitor_new ();
 351
 352   tp_g_signal_connect_object (self->priv->camera_monitor, "added",
 353       G_CALLBACK (empathy_camera_menu_camera_added_cb), self, 0);
 354   tp_g_signal_connect_object (self->priv->camera_monitor, "removed",
 355       G_CALLBACK (empathy_camera_menu_camera_removed_cb), self, 0);
 356
 357   self->priv->settings = g_settings_new (EMPATHY_PREFS_CALL_SCHEMA);
 358   g_signal_connect (self->priv->settings,
 359       "changed::"EMPATHY_PREFS_CALL_CAMERA_DEVICE,
 360       G_CALLBACK (empathy_camera_menu_prefs_camera_changed_cb), self);
 361
 362   self->priv->cameras = g_queue_new ();
 363
 364   empathy_camera_menu_get_cameras (self);
 365 }
 366
 367 static void
 368 empathy_camera_menu_dispose (GObject *obj)
 369 {
 370   EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (obj);
 371
 372   tp_clear_pointer (&self->priv->cameras, g_queue_free);
 373
 374   tp_clear_object (&self->priv->camera_monitor);
 375   tp_clear_object (&self->priv->settings);
 376
 377   G_OBJECT_CLASS (empathy_camera_menu_parent_class)->dispose (obj);
 378 }
 379
 380 static void
 381 empathy_camera_menu_class_init (EmpathyCameraMenuClass *klass)
 382 {
 383   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 384
 385   object_class->set_property = empathy_camera_menu_set_property;
 386   object_class->get_property = empathy_camera_menu_get_property;
 387   object_class->constructed = empathy_camera_menu_constructed;
 388   object_class->dispose = empathy_camera_menu_dispose;
 389
 390   g_object_class_install_property (object_class, PROP_WINDOW,
 391       g_param_spec_object ("window", "window", "window",
 392           EMPATHY_TYPE_CALL_WINDOW,
 393           G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY));
 394
 395   g_type_class_add_private (object_class, sizeof (EmpathyCameraMenuPrivate));
 396 }
 397
 398 EmpathyCameraMenu *
 399 empathy_camera_menu_new (EmpathyCallWindow *window)
 400 {
 401   return g_object_new (EMPATHY_TYPE_CAMERA_MENU,
 402       "window", window,
 403       NULL);
 404 }
 405
 406 void
 407 empathy_camera_menu_set_sensitive (EmpathyCameraMenu *self,
 408     gboolean sensitive)
 409 {
 410   GtkUIManager *ui_manager;
 411
 412   gtk_action_group_set_sensitive (self->priv->action_group, sensitive);
 413   if (sensitive) /* Mark the active camera as such. */
 414     empathy_camera_menu_update (self);
 415
 416   ui_manager = empathy_call_window_get_ui_manager (self->priv->window);
 417   gtk_ui_manager_ensure_update (ui_manager);
 418 }