/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * Copyright (C) 2007 Jan Arne Petersen <jap@gnome.org> * Copyright (C) 2008 Bastien Nocera <hadess@hadess.net> * Copyright © 2010 Christian Persch * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * */ #include "config.h" #include "ev-media-player-keys.h" #include <string.h> #include <glib.h> #include <gio/gio.h> #define SD_NAME "org.mate.SettingsDaemon" #define SD_OBJECT_PATH "/org/mate/SettingsDaemon/MediaKeys" #define SD_INTERFACE "org.mate.SettingsDaemon.MediaKeys" enum { KEY_PRESSED, LAST_SIGNAL }; struct _EvMediaPlayerKeys { GObject parent; GDBusProxy *proxy; gboolean has_name_owner; }; struct _EvMediaPlayerKeysClass { GObjectClass parent_class; /* Signals */ void (* key_pressed) (EvMediaPlayerKeys *keys, const gchar *key); }; static guint signals[LAST_SIGNAL] = { 0 }; G_DEFINE_TYPE (EvMediaPlayerKeys, ev_media_player_keys, G_TYPE_OBJECT) static void ev_media_player_keys_finalize (GObject *object); static void ev_media_player_keys_class_init (EvMediaPlayerKeysClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->finalize = ev_media_player_keys_finalize; signals[KEY_PRESSED] = g_signal_new ("key_pressed", EV_TYPE_MEDIA_PLAYER_KEYS, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (EvMediaPlayerKeysClass, key_pressed), NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING); } static void ev_media_player_keys_update_has_name_owner (EvMediaPlayerKeys *keys) { gchar *name_owner; if (!keys->proxy) { keys->has_name_owner = FALSE; return; } name_owner = g_dbus_proxy_get_name_owner (keys->proxy); keys->has_name_owner = (name_owner != NULL); g_free (name_owner); } static void ev_media_player_keys_grab_keys (EvMediaPlayerKeys *keys) { if (!keys->has_name_owner) return; /* * The uint as second argument is time. We give a very low value so that * if a media player is there it gets higher priority on the keys (0 is * a special value having maximum priority). */ g_dbus_proxy_call (keys->proxy, "GrabMediaPlayerKeys", g_variant_new ("(su)", "Atril", 1), G_DBUS_CALL_FLAGS_NO_AUTO_START, -1, NULL, NULL, NULL); } static void ev_media_player_keys_release_keys (EvMediaPlayerKeys *keys) { if (!keys->has_name_owner) return; g_dbus_proxy_call (keys->proxy, "ReleaseMediaPlayerKeys", g_variant_new ("(s)", "Atril"), G_DBUS_CALL_FLAGS_NO_AUTO_START, -1, NULL, NULL, NULL); } static void media_player_key_pressed_cb (GDBusProxy *proxy, gchar *sender_name, gchar *signal_name, GVariant *parameters, gpointer user_data) { const char *application, *key; if (g_strcmp0 (sender_name, SD_NAME) != 0) return; if (g_strcmp0 (signal_name, "MediaPlayerKeyPressed") != 0) return; if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(ss)"))) return; g_variant_get (parameters, "(&s&s)", &application, &key); if (strcmp ("Atril", application) == 0) { g_signal_emit (user_data, signals[KEY_PRESSED], 0, key); } } static void mediakeys_name_owner_changed (GObject *object, GParamSpec *pspec, gpointer user_data) { EvMediaPlayerKeys *keys = EV_MEDIA_PLAYER_KEYS (user_data); ev_media_player_keys_update_has_name_owner (keys); } static void mediakeys_service_appeared_cb (GObject *source_object, GAsyncResult *res, gpointer user_data) { EvMediaPlayerKeys *keys = EV_MEDIA_PLAYER_KEYS (user_data); GDBusProxy *proxy; proxy = g_dbus_proxy_new_for_bus_finish (res, NULL); if (proxy == NULL) { return; } g_signal_connect (proxy, "g-signal", G_CALLBACK (media_player_key_pressed_cb), keys); g_signal_connect (proxy, "notify::g-name-owner", G_CALLBACK (mediakeys_name_owner_changed), keys); keys->proxy = proxy; ev_media_player_keys_update_has_name_owner (keys); ev_media_player_keys_grab_keys (keys); } static void ev_media_player_keys_init (EvMediaPlayerKeys *keys) { g_dbus_proxy_new_for_bus (G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES, NULL, SD_NAME, SD_OBJECT_PATH, SD_INTERFACE, NULL, mediakeys_service_appeared_cb, keys); } void ev_media_player_keys_focused (EvMediaPlayerKeys *keys) { if (keys->proxy == NULL) return; ev_media_player_keys_grab_keys (keys); } static void ev_media_player_keys_finalize (GObject *object) { EvMediaPlayerKeys *keys = EV_MEDIA_PLAYER_KEYS (object); if (keys->proxy != NULL) { ev_media_player_keys_release_keys (keys); g_object_unref (keys->proxy); keys->proxy = NULL; keys->has_name_owner = FALSE; } G_OBJECT_CLASS (ev_media_player_keys_parent_class)->finalize (object); } EvMediaPlayerKeys * ev_media_player_keys_new (void) { return g_object_new (EV_TYPE_MEDIA_PLAYER_KEYS, NULL); }