shell/ev-media-player-keys.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2007 Jan Arne Petersen <jap@gnome.org>
   4  * Copyright (C) 2008 Bastien Nocera <hadess@hadess.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
  19  *
  20  */
  21
  22 #include "config.h"
  23
  24 #include <glib.h>
  25 #include <glib-object.h>
  26 #include <glib/gi18n-lib.h>
  27 #include <gmodule.h>
  28 #include <dbus/dbus-glib.h>
  29 #include <string.h>
  30
  31 #include "ev-media-player-keys.h"
  32
  33 #include "ev-marshal.h"
  34
  35 struct _EvMediaPlayerKeys
  36 {
  37         GObject        parent;
  38         DBusGProxy    *media_player_keys_proxy;
  39         EvWindow      *window;
  40 };
  41
  42 struct _EvMediaPlayerKeysClass
  43 {
  44         GObjectClass parent_class;
  45 };
  46
  47 G_DEFINE_TYPE (EvMediaPlayerKeys, ev_media_player_keys, G_TYPE_OBJECT)
  48
  49 static void ev_media_player_keys_init           (EvMediaPlayerKeys *keys);
  50 static void ev_media_player_keys_finalize       (GObject *object);
  51
  52 static void
  53 ev_media_player_keys_class_init (EvMediaPlayerKeysClass *klass)
  54 {
  55         GObjectClass *object_class = G_OBJECT_CLASS (klass);
  56
  57         object_class->finalize = ev_media_player_keys_finalize;
  58 }
  59
  60 static void
  61 proxy_destroy (DBusGProxy *proxy,
  62                EvMediaPlayerKeys* keys)
  63 {
  64         keys->media_player_keys_proxy = NULL;
  65 }
  66
  67 static void
  68 on_media_player_key_pressed (DBusGProxy *proxy, const gchar *application, const gchar *key, EvMediaPlayerKeys *keys)
  69 {
  70         if (strcmp ("Evince", application) == 0 && keys->window != NULL) {
  71                 /* Note how Previous/Next only go to the
  72                  * next/previous page despite their icon telling you
  73                  * they should go to the beginning/end.
  74                  *
  75                  * There's very few keyboards with FFW/RWD though,
  76                  * so we stick the most useful keybinding on the most
  77                  * often seen keys
  78                  */
  79                 if (strcmp ("Play", key) == 0) {
  80                         ev_window_start_presentation (keys->window);
  81                 } else if (strcmp ("Previous", key) == 0) {
  82                         ev_window_go_previous_page (keys->window);
  83                 } else if (strcmp ("Next", key) == 0) {
  84                         ev_window_go_next_page (keys->window);
  85                 } else if (strcmp ("FastForward", key) == 0) {
  86                         ev_window_go_last_page (keys->window);
  87                 } else if (strcmp ("Rewind", key) == 0) {
  88                         ev_window_go_first_page (keys->window);
  89                 }
  90         }
  91 }
  92
  93 static void
  94 ev_media_player_keys_init (EvMediaPlayerKeys *keys)
  95 {
  96         DBusGConnection *connection;
  97         GError *err = NULL;
  98
  99         connection = dbus_g_bus_get (DBUS_BUS_SESSION, &err);
 100         if (connection == NULL) {
 101                 g_warning ("Error connecting to D-Bus: %s", err->message);
 102                 return;
 103         }
 104
 105         /* Try the gnome-settings-daemon version,
 106          * then the gnome-control-center version of things */
 107         keys->media_player_keys_proxy = dbus_g_proxy_new_for_name_owner (connection,
 108                                                                        "org.gnome.SettingsDaemon",
 109                                                                        "/org/gnome/SettingsDaemon/MediaKeys",
 110                                                                        "org.gnome.SettingsDaemon.MediaKeys",
 111                                                                        NULL);
 112         if (keys->media_player_keys_proxy == NULL) {
 113                 keys->media_player_keys_proxy = dbus_g_proxy_new_for_name_owner (connection,
 114                                                                                "org.gnome.SettingsDaemon",
 115                                                                                "/org/gnome/SettingsDaemon",
 116                                                                                "org.gnome.SettingsDaemon",
 117                                                                                &err);
 118         }
 119
 120         dbus_g_connection_unref (connection);
 121         if (err != NULL) {
 122                 g_warning ("Failed to create dbus proxy for org.gnome.SettingsDaemon: %s",
 123                            err->message);
 124                 g_error_free (err);
 125                 return;
 126         } else {
 127                 g_signal_connect_object (keys->media_player_keys_proxy,
 128                                          "destroy",
 129                                          G_CALLBACK (proxy_destroy),
 130                                          keys, 0);
 131         }
 132
 133         dbus_g_proxy_call (keys->media_player_keys_proxy,
 134                            "GrabMediaPlayerKeys", NULL,
 135                            G_TYPE_STRING, "Evince", G_TYPE_UINT, 0, G_TYPE_INVALID,
 136                            G_TYPE_INVALID);
 137
 138         dbus_g_object_register_marshaller (ev_marshal_VOID__STRING_STRING,
 139                                            G_TYPE_NONE, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_INVALID);
 140         dbus_g_proxy_add_signal (keys->media_player_keys_proxy, "MediaPlayerKeyPressed",
 141                                  G_TYPE_STRING, G_TYPE_STRING, G_TYPE_INVALID);
 142
 143         dbus_g_proxy_connect_signal (keys->media_player_keys_proxy, "MediaPlayerKeyPressed",
 144                                      G_CALLBACK (on_media_player_key_pressed), keys, NULL);
 145 }
 146
 147 void
 148 ev_media_player_keys_focused (EvMediaPlayerKeys *keys, EvWindow *window)
 149 {
 150         if (keys->media_player_keys_proxy != NULL) {
 151                 if (keys->window != NULL) {
 152                         g_object_unref (keys->window);
 153                         keys->window = NULL;
 154                 }
 155                 if (window != NULL) {
 156                         dbus_g_proxy_call (keys->media_player_keys_proxy,
 157                                            "GrabMediaPlayerKeys", NULL,
 158                                            G_TYPE_STRING, "Evince", G_TYPE_UINT, 0, G_TYPE_INVALID,
 159                                            G_TYPE_INVALID);
 160                         keys->window = g_object_ref (window);
 161                 }
 162         }
 163 }
 164
 165 static void
 166 ev_media_player_keys_finalize (GObject *object)
 167 {
 168         EvMediaPlayerKeys *keys = EV_MEDIA_PLAYER_KEYS (object);
 169
 170         if (keys->media_player_keys_proxy != NULL) {
 171                 dbus_g_proxy_call (keys->media_player_keys_proxy,
 172                                    "ReleaseMediaPlayerKeys", NULL,
 173                                    G_TYPE_STRING, "Ev", G_TYPE_INVALID, G_TYPE_INVALID);
 174                 g_object_unref (keys->media_player_keys_proxy);
 175                 keys->media_player_keys_proxy = NULL;
 176         }
 177
 178         if (keys->window != NULL) {
 179                 g_object_unref (keys->window);
 180                 keys->window = NULL;
 181         }
 182
 183         G_OBJECT_CLASS (ev_media_player_keys_parent_class)->finalize (object);
 184 }
 185
 186 EvMediaPlayerKeys *
 187 ev_media_player_keys_new (void)
 188 {
 189         return g_object_new (EV_TYPE_MEDIA_PLAYER_KEYS, NULL);
 190 }
 191