CallWindow: add a menu to change the camera

https://bugzilla.gnome.org/show_bug.cgi?id=599167

1 files changed, 331 insertions, 0 deletions

diff --git a/src/empathy-camera-menu.c b/src/empathy-camera-menu.c
new file mode 100644
index 000000000..a7bc26fa8
--- /dev/null
+++ b/src/empathy-camera-menu.c
@@ -0,0 +1,331 @@
+/*
+ * Copyright (C) 2011 Collabora Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * GtkAction code based on gnome-terminal's TerminalTabsMenu object.
+ * Thanks guys!
+ */
+
+#include <config.h>
+
+#include <gtk/gtk.h>
+
+#include <libempathy/empathy-camera-monitor.h>
+
+#include "empathy-camera-menu.h"
+
+#define DEBUG_FLAG EMPATHY_DEBUG_VOIP
+#include <libempathy/empathy-debug.h>
+
+struct _EmpathyCameraMenuPrivate
+{
+  /* Borrowed ref; the call window actually owns us. */
+  EmpathyCallWindow *window;
+
+  /* Given away ref; the call window's UI manager now owns this. */
+  GtkActionGroup *action_group;
+
+  /* An invisible radio action so new cameras are always in the
+   * same radio group. */
+  GtkAction *anchor_action;
+
+  /* The merge ID used with the UI manager. We need to keep this
+   * around so in _clean we can remove all the items we've added
+   * before and start again. */
+  guint ui_id;
+
+  /* TRUE if we're in _update and so calling _set_active. */
+  gboolean in_update;
+
+  /* Queue of GtkRadioActions. */
+  GQueue *cameras;
+
+  EmpathyCameraMonitor *camera_monitor;
+};
+
+G_DEFINE_TYPE (EmpathyCameraMenu, empathy_camera_menu, G_TYPE_OBJECT);
+
+enum
+{
+  PROP_WINDOW = 1,
+};
+
+static void empathy_camera_menu_update (EmpathyCameraMenu *self);
+
+static void
+empathy_camera_menu_init (EmpathyCameraMenu *self)
+{
+  self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
+    EMPATHY_TYPE_CAMERA_MENU, EmpathyCameraMenuPrivate);
+}
+
+static void
+empathy_camera_menu_set_property (GObject *object,
+    guint property_id,
+    const GValue *value,
+    GParamSpec *pspec)
+{
+  EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (object);
+
+  switch (property_id)
+    {
+      case PROP_WINDOW:
+        self->priv->window = g_value_get_object (value);
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+empathy_camera_menu_get_property (GObject *object,
+    guint property_id,
+    GValue *value,
+    GParamSpec *pspec)
+{
+  EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (object);
+
+  switch (property_id)
+    {
+      case PROP_WINDOW:
+        g_value_set_object (value, self->priv->window);
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+empathy_camera_menu_clean (EmpathyCameraMenu *self)
+{
+  GtkUIManager *ui_manager;
+
+  if (self->priv->ui_id == 0)
+    return;
+
+  ui_manager = empathy_call_window_get_ui_manager (self->priv->window);
+
+  gtk_ui_manager_remove_ui (ui_manager, self->priv->ui_id);
+  gtk_ui_manager_ensure_update (ui_manager);
+  self->priv->ui_id = 0;
+}
+
+static void
+empathy_camera_menu_activate_cb (GtkAction *action,
+    EmpathyCameraMenu *self)
+{
+  EmpathyGstVideoSrc *video;
+  const gchar *device;
+
+  if (self->priv->in_update)
+    return;
+
+  video = empathy_call_window_get_video_src (self->priv->window);
+
+  device = gtk_action_get_name (action);
+
+  empathy_video_src_change_device (video, device);
+}
+
+static void
+empathy_camera_menu_update (EmpathyCameraMenu *self)
+{
+  GList *l;
+  GtkUIManager *ui_manager;
+  EmpathyGstVideoSrc *video;
+  gchar *current_camera;
+
+  ui_manager = empathy_call_window_get_ui_manager (self->priv->window);
+
+  video = empathy_call_window_get_video_src (self->priv->window);
+  current_camera = empathy_video_src_dup_device (video);
+
+  empathy_camera_menu_clean (self);
+  self->priv->ui_id = gtk_ui_manager_new_merge_id (ui_manager);
+
+  for (l = self->priv->cameras->head; l != NULL; l = g_list_next (l))
+    {
+      GtkRadioAction *action = l->data;
+      const gchar *name = gtk_action_get_name (GTK_ACTION (action));
+
+      if (!tp_strdiff (current_camera, name))
+        {
+          self->priv->in_update = TRUE;
+          gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
+          self->priv->in_update = FALSE;
+        }
+
+      gtk_ui_manager_add_ui (ui_manager, self->priv->ui_id,
+          /* TODO: this should probably be passed from the call
+           * window, seeing that it's a reference to
+           * empathy-call-window.ui. */
+          "/menubar1/edit/menucamera",
+          name, name, GTK_UI_MANAGER_MENUITEM, FALSE);
+    }
+
+  g_free (current_camera);
+}
+
+static void
+empathy_camera_menu_add_camera (EmpathyCameraMenu *self,
+    EmpathyCamera *camera)
+{
+  GtkRadioAction *action;
+  GSList *group;
+
+  action = gtk_radio_action_new (camera->device, camera->name, NULL, NULL, 0);
+  gtk_action_group_add_action (self->priv->action_group, GTK_ACTION (action));
+
+  group = gtk_radio_action_get_group (
+      GTK_RADIO_ACTION (self->priv->anchor_action));
+  gtk_radio_action_set_group (GTK_RADIO_ACTION (action), group);
+
+  g_queue_push_tail (self->priv->cameras, action);
+
+  g_signal_connect (action, "activate",
+      G_CALLBACK (empathy_camera_menu_activate_cb), self);
+}
+
+static void
+empathy_camera_menu_camera_added_cb (EmpathyCameraMonitor *monitor,
+    EmpathyCamera *camera,
+    EmpathyCameraMenu *self)
+{
+  empathy_camera_menu_add_camera (self, camera);
+  empathy_camera_menu_update (self);
+}
+
+static void
+empathy_camera_menu_camera_removed_cb (EmpathyCameraMonitor *monitor,
+    EmpathyCamera *camera,
+    EmpathyCameraMenu *self)
+{
+  GList *l;
+
+  for (l = self->priv->cameras->head; l != NULL; l = g_list_next (l))
+    {
+      GtkAction *action = l->data;
+      const gchar *device;
+
+      device = gtk_action_get_name (action);
+
+      if (tp_strdiff (device, camera->device))
+        continue;
+
+      g_signal_handlers_disconnect_by_func (action,
+          G_CALLBACK (empathy_camera_menu_activate_cb), self);
+
+      gtk_action_group_remove_action (self->priv->action_group,
+          action);
+      g_queue_remove (self->priv->cameras, action);
+      break;
+    }
+
+  empathy_camera_menu_update (self);
+}
+
+static void
+empathy_camera_menu_get_cameras (EmpathyCameraMenu *self)
+{
+  const GList *cameras;
+
+  cameras = empathy_camera_monitor_get_cameras (self->priv->camera_monitor);
+
+  for (; cameras != NULL; cameras = g_list_next (cameras))
+    {
+      EmpathyCamera *camera = cameras->data;
+
+      empathy_camera_menu_add_camera (self, camera);
+    }
+
+  empathy_camera_menu_update (self);
+}
+
+static void
+empathy_camera_menu_constructed (GObject *obj)
+{
+  EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (obj);
+  GtkUIManager *ui_manager;
+
+  g_assert (EMPATHY_IS_CALL_WINDOW (self->priv->window));
+
+  ui_manager = empathy_call_window_get_ui_manager (self->priv->window);
+
+  g_assert (GTK_IS_UI_MANAGER (ui_manager));
+
+  /* Okay let's go go go. */
+
+  self->priv->action_group = gtk_action_group_new ("EmpathyCameraMenu");
+  gtk_ui_manager_insert_action_group (ui_manager, self->priv->action_group, -1);
+  /* the UI manager now owns this */
+  g_object_unref (self->priv->action_group);
+
+  self->priv->anchor_action = g_object_new (GTK_TYPE_RADIO_ACTION,
+      "name", "EmpathyCameraMenuAnchorAction",
+      NULL);
+  gtk_action_group_add_action (self->priv->action_group,
+      self->priv->anchor_action);
+  g_object_unref (self->priv->anchor_action);
+
+  self->priv->camera_monitor = empathy_camera_monitor_dup_singleton ();
+
+  tp_g_signal_connect_object (self->priv->camera_monitor, "added",
+      G_CALLBACK (empathy_camera_menu_camera_added_cb), self, 0);
+  tp_g_signal_connect_object (self->priv->camera_monitor, "removed",
+      G_CALLBACK (empathy_camera_menu_camera_removed_cb), self, 0);
+
+  self->priv->cameras = g_queue_new ();
+
+  empathy_camera_menu_get_cameras (self);
+}
+
+static void
+empathy_camera_menu_dispose (GObject *obj)
+{
+  EmpathyCameraMenu *self = EMPATHY_CAMERA_MENU (obj);
+
+  tp_clear_pointer (&self->priv->cameras, g_queue_free);
+
+  tp_clear_object (&self->priv->camera_monitor);
+
+  G_OBJECT_CLASS (empathy_camera_menu_parent_class)->dispose (obj);
+}
+
+static void
+empathy_camera_menu_class_init (EmpathyCameraMenuClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->set_property = empathy_camera_menu_set_property;
+  object_class->get_property = empathy_camera_menu_get_property;
+  object_class->constructed = empathy_camera_menu_constructed;
+  object_class->dispose = empathy_camera_menu_dispose;
+
+  g_object_class_install_property (object_class, PROP_WINDOW,
+      g_param_spec_object ("window", "window", "window",
+          EMPATHY_TYPE_CALL_WINDOW,
+          G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY));
+
+  g_type_class_add_private (object_class, sizeof (EmpathyCameraMenuPrivate));
+}
+
+EmpathyCameraMenu *
+empathy_camera_menu_new (EmpathyCallWindow *window)
+{
+  return g_object_new (EMPATHY_TYPE_CAMERA_MENU,
+      "window", window,
+      NULL);
+}