diff options
Diffstat (limited to 'shell/ev-media-player-keys.c')
| -rw-r--r-- | shell/ev-media-player-keys.c | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/shell/ev-media-player-keys.c b/shell/ev-media-player-keys.c new file mode 100644 index 00000000..f3237873 --- /dev/null +++ b/shell/ev-media-player-keys.c @@ -0,0 +1,233 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * Copyright (C) 2007 Jan Arne Petersen <[email protected]> + * Copyright (C) 2008 Bastien Nocera <[email protected]> + * 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]; + +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)", "Evince", 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)", "Evince"), + 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 ("Evince", 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); +} + |