vcl/unx/gtk3/hudawareness.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <string.h>
  11
  12 #include <unx/gtk/hudawareness.h>
  13
  14 namespace {
  15
  16 struct HudAwarenessHandle
  17 {
  18   gpointer connection;
  19   HudAwarenessCallback callback;
  20   gpointer user_data;
  21   GDestroyNotify notify;
  22 };
  23
  24 }
  25
  26 static void
  27 hud_awareness_method_call (GDBusConnection       * /* connection */,
  28                            const gchar           * /* sender */,
  29                            const gchar           * /* object_path */,
  30                            const gchar           * /* interface_name */,
  31                            const gchar           *method_name,
  32                            GVariant              *parameters,
  33                            GDBusMethodInvocation *invocation,
  34                            gpointer               user_data)
  35 {
  36   HudAwarenessHandle *handle = static_cast<HudAwarenessHandle*>(user_data);
  37
  38   if (g_str_equal (method_name, "HudActiveChanged"))
  39   {
  40       gboolean active;
  41
  42       g_variant_get (parameters, "(b)", &active);
  43
  44       (* handle->callback) (active, handle->user_data);
  45   }
  46
  47   g_dbus_method_invocation_return_value (invocation, nullptr);
  48 }
  49
  50 guint
  51 hud_awareness_register (GDBusConnection       *connection,
  52                         const gchar           *object_path,
  53                         HudAwarenessCallback   callback,
  54                         gpointer               user_data,
  55                         GDestroyNotify         notify,
  56                         GError               **error)
  57 {
  58   static GDBusInterfaceInfo *iface;
  59   static GDBusNodeInfo *info;
  60   GDBusInterfaceVTable vtable;
  61   HudAwarenessHandle *handle;
  62   guint object_id;
  63
  64   memset (static_cast<void *>(&vtable), 0, sizeof (vtable));
  65   vtable.method_call = hud_awareness_method_call;
  66
  67   if G_UNLIKELY (iface == nullptr)
  68   {
  69       GError *local_error = nullptr;
  70
  71       info = g_dbus_node_info_new_for_xml ("<node>"
  72                                              "<interface name='com.canonical.hud.Awareness'>"
  73                                                "<method name='CheckAwareness'/>"
  74                                                "<method name='HudActiveChanged'>"
  75                                                  "<arg type='b'/>"
  76                                                "</method>"
  77                                              "</interface>"
  78                                            "</node>",
  79                                            &local_error);
  80       g_assert_no_error (local_error);
  81       iface = g_dbus_node_info_lookup_interface (info, "com.canonical.hud.Awareness");
  82       g_assert (iface != nullptr);
  83   }
  84
  85   handle = static_cast<HudAwarenessHandle*>(g_malloc (sizeof (HudAwarenessHandle)));
  86
  87   object_id = g_dbus_connection_register_object (connection, object_path, iface, &vtable, handle, &g_free, error);
  88
  89   if (object_id == 0)
  90   {
  91       g_free (handle);
  92       return 0;
  93   }
  94
  95   handle->connection = g_object_ref(connection);
  96   handle->callback = callback;
  97   handle->user_data = user_data;
  98   handle->notify = notify;
  99
 100   return object_id;
 101 }
 102
 103 void
 104 hud_awareness_unregister (GDBusConnection *connection,
 105                           guint            subscription_id)
 106 {
 107   g_dbus_connection_unregister_object (connection, subscription_id);
 108 }
 109
 110 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */