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Diffstat (limited to 'src/gs-monitor.c')
| -rw-r--r-- | src/gs-monitor.c | 528 |
1 files changed, 528 insertions, 0 deletions
diff --git a/src/gs-monitor.c b/src/gs-monitor.c new file mode 100644 index 0000000..2703ba3 --- /dev/null +++ b/src/gs-monitor.c @@ -0,0 +1,528 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright (C) 2004-2006 William Jon McCann <[email protected]> + * + * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Authors: William Jon McCann <[email protected]> + * + */ + +#include "config.h" +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> + +#include <glib.h> +#include <glib-object.h> + +#include "mate-screensaver.h" + +#include "gs-manager.h" +#include "gs-watcher.h" +#include "gs-fade.h" +#include "gs-grab.h" + +#include "gs-listener-dbus.h" +#include "gs-monitor.h" +#include "gs-prefs.h" +#include "gs-debug.h" + +static void gs_monitor_class_init (GSMonitorClass *klass); +static void gs_monitor_init (GSMonitor *monitor); +static void gs_monitor_finalize (GObject *object); + +#define GS_MONITOR_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GS_TYPE_MONITOR, GSMonitorPrivate)) + +struct GSMonitorPrivate +{ + GSWatcher *watcher; + GSListener *listener; + GSManager *manager; + GSPrefs *prefs; + GSFade *fade; + GSGrab *grab; + guint release_grab_id; +}; + +#define FADE_TIMEOUT 10000 + +G_DEFINE_TYPE (GSMonitor, gs_monitor, G_TYPE_OBJECT) + +static void +gs_monitor_class_init (GSMonitorClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->finalize = gs_monitor_finalize; + + g_type_class_add_private (klass, sizeof (GSMonitorPrivate)); +} + +static void +manager_activated_cb (GSManager *manager, + GSMonitor *monitor) +{ +} + +static void +manager_deactivated_cb (GSManager *manager, + GSMonitor *monitor) +{ + gs_listener_set_active (monitor->priv->listener, FALSE); +} + +static gboolean +watcher_idle_cb (GSWatcher *watcher, + gboolean is_idle, + GSMonitor *monitor) +{ + gboolean res; + + gs_debug ("Idle signal detected: %d", is_idle); + + res = gs_listener_set_session_idle (monitor->priv->listener, is_idle); + + return res; +} + +static gboolean +release_grab_timeout (GSMonitor *monitor) +{ + gboolean manager_active; + + manager_active = gs_manager_get_active (monitor->priv->manager); + if (! manager_active) + { + gs_grab_release (monitor->priv->grab); + } + + monitor->priv->release_grab_id = 0; + return FALSE; +} + +static gboolean +watcher_idle_notice_cb (GSWatcher *watcher, + gboolean in_effect, + GSMonitor *monitor) +{ + gboolean activation_enabled; + gboolean inhibited; + gboolean handled; + + gs_debug ("Idle notice signal detected: %d", in_effect); + + /* only fade if screensaver can activate */ + activation_enabled = gs_listener_get_activation_enabled (monitor->priv->listener); + inhibited = gs_listener_is_inhibited (monitor->priv->listener); + + handled = FALSE; + if (in_effect) + { + if (activation_enabled && ! inhibited) + { + /* start slow fade */ + if (gs_grab_grab_offscreen (monitor->priv->grab, FALSE)) + { + gs_fade_async (monitor->priv->fade, FADE_TIMEOUT, NULL, NULL); + } + else + { + gs_debug ("Could not grab the keyboard so not performing idle warning fade-out"); + } + + handled = TRUE; + } + } + else + { + gboolean manager_active; + + manager_active = gs_manager_get_active (monitor->priv->manager); + /* cancel the fade unless manager was activated */ + if (! manager_active) + { + gs_debug ("manager not active, performing fade cancellation"); + gs_fade_reset (monitor->priv->fade); + + /* don't release the grab immediately to prevent typing passwords into windows */ + if (monitor->priv->release_grab_id != 0) + { + g_source_remove (monitor->priv->release_grab_id); + } + monitor->priv->release_grab_id = g_timeout_add (1000, (GSourceFunc)release_grab_timeout, monitor); + } + else + { + gs_debug ("manager active, skipping fade cancellation"); + } + + handled = TRUE; + } + + return handled; +} + +static void +gs_monitor_lock_screen (GSMonitor *monitor) +{ + gboolean res; + gboolean locked; + + /* set lock flag before trying to activate screensaver + in case something tries to react to the ActiveChanged signal */ + + gs_manager_get_lock_active (monitor->priv->manager, &locked); + gs_manager_set_lock_active (monitor->priv->manager, TRUE); + res = gs_listener_set_active (monitor->priv->listener, TRUE); + if (! res) + { + /* If we've failed then restore lock status */ + gs_manager_set_lock_active (monitor->priv->manager, locked); + gs_debug ("Unable to lock the screen"); + } +} + +static void +gs_monitor_simulate_user_activity (GSMonitor *monitor) +{ + /* FIXME: reset the xsync timer? */ + + /* request that the manager unlock - + will pop up a dialog if necessary */ + gs_manager_request_unlock (monitor->priv->manager); +} + +static void +listener_lock_cb (GSListener *listener, + GSMonitor *monitor) +{ + if (! monitor->priv->prefs->lock_disabled) + { + gs_monitor_lock_screen (monitor); + } + else + { + gs_debug ("Locking disabled by the administrator"); + } + +} + +static void +listener_quit_cb (GSListener *listener, + GSMonitor *monitor) +{ + gs_listener_set_active (monitor->priv->listener, FALSE); + mate_screensaver_quit (); +} + +static void +listener_cycle_cb (GSListener *listener, + GSMonitor *monitor) +{ + gs_manager_cycle (monitor->priv->manager); +} + +static void +listener_show_message_cb (GSListener *listener, + const char *summary, + const char *body, + const char *icon, + GSMonitor *monitor) +{ + gs_manager_show_message (monitor->priv->manager, + summary, + body, + icon); +} + +static gboolean +listener_active_changed_cb (GSListener *listener, + gboolean active, + GSMonitor *monitor) +{ + gboolean res; + gboolean ret; + gboolean idle_watch_enabled; + + res = gs_manager_set_active (monitor->priv->manager, active); + if (! res) + { + gs_debug ("Unable to set manager active: %d", active); + ret = FALSE; + goto done; + } + + ret = TRUE; + +done: + + idle_watch_enabled = gs_watcher_get_enabled (monitor->priv->watcher); + if (ret && idle_watch_enabled) + { + res = gs_watcher_set_active (monitor->priv->watcher, !active); + if (! res) + { + gs_debug ("Unable to set the idle watcher active: %d", !active); + } + } + + return ret; +} + +static void +listener_throttle_changed_cb (GSListener *listener, + gboolean throttled, + GSMonitor *monitor) +{ + gs_manager_set_throttled (monitor->priv->manager, throttled); +} + +static void +listener_simulate_user_activity_cb (GSListener *listener, + GSMonitor *monitor) +{ + gs_monitor_simulate_user_activity (monitor); +} + +static void +_gs_monitor_update_from_prefs (GSMonitor *monitor, + GSPrefs *prefs) +{ + gboolean idle_detection_enabled; + gboolean idle_detection_active; + gboolean activate_watch; + gboolean manager_active; + gboolean lock_enabled; + gboolean user_switch_enabled; + + lock_enabled = (monitor->priv->prefs->lock_enabled && !monitor->priv->prefs->lock_disabled); + user_switch_enabled = (monitor->priv->prefs->user_switch_enabled && !monitor->priv->prefs->user_switch_disabled); + + gs_manager_set_lock_enabled (monitor->priv->manager, lock_enabled); + gs_manager_set_lock_timeout (monitor->priv->manager, monitor->priv->prefs->lock_timeout); + gs_manager_set_logout_enabled (monitor->priv->manager, monitor->priv->prefs->logout_enabled); + gs_manager_set_user_switch_enabled (monitor->priv->manager, user_switch_enabled); + gs_manager_set_keyboard_enabled (monitor->priv->manager, monitor->priv->prefs->keyboard_enabled); + gs_manager_set_logout_timeout (monitor->priv->manager, monitor->priv->prefs->logout_timeout); + gs_manager_set_logout_command (monitor->priv->manager, monitor->priv->prefs->logout_command); + gs_manager_set_keyboard_command (monitor->priv->manager, monitor->priv->prefs->keyboard_command); + gs_manager_set_cycle_timeout (monitor->priv->manager, monitor->priv->prefs->cycle); + gs_manager_set_mode (monitor->priv->manager, monitor->priv->prefs->mode); + gs_manager_set_themes (monitor->priv->manager, monitor->priv->prefs->themes); + + /* enable activation when allowed */ + gs_listener_set_activation_enabled (monitor->priv->listener, + monitor->priv->prefs->idle_activation_enabled); + + /* idle detection always enabled */ + idle_detection_enabled = TRUE; + + gs_watcher_set_enabled (monitor->priv->watcher, idle_detection_enabled); + + /* in the case where idle detection is reenabled we may need to + activate the watcher too */ + + manager_active = gs_manager_get_active (monitor->priv->manager); + idle_detection_active = gs_watcher_get_active (monitor->priv->watcher); + activate_watch = (! manager_active + && ! idle_detection_active + && idle_detection_enabled); + if (activate_watch) + { + gs_watcher_set_active (monitor->priv->watcher, TRUE); + } + + if (monitor->priv->prefs->status_message_enabled) + { + char *text; + g_object_get (monitor->priv->watcher, + "status-message", &text, + NULL); + gs_manager_set_status_message (monitor->priv->manager, text); + g_free (text); + } + else + { + gs_manager_set_status_message (monitor->priv->manager, NULL); + } +} + +static void +disconnect_listener_signals (GSMonitor *monitor) +{ + g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_lock_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_quit_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_cycle_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_active_changed_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_throttle_changed_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_simulate_user_activity_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_show_message_cb, monitor); +} + +static void +connect_listener_signals (GSMonitor *monitor) +{ + g_signal_connect (monitor->priv->listener, "lock", + G_CALLBACK (listener_lock_cb), monitor); + g_signal_connect (monitor->priv->listener, "quit", + G_CALLBACK (listener_quit_cb), monitor); + g_signal_connect (monitor->priv->listener, "cycle", + G_CALLBACK (listener_cycle_cb), monitor); + g_signal_connect (monitor->priv->listener, "active-changed", + G_CALLBACK (listener_active_changed_cb), monitor); + g_signal_connect (monitor->priv->listener, "throttle-changed", + G_CALLBACK (listener_throttle_changed_cb), monitor); + g_signal_connect (monitor->priv->listener, "simulate-user-activity", + G_CALLBACK (listener_simulate_user_activity_cb), monitor); + g_signal_connect (monitor->priv->listener, "show-message", + G_CALLBACK (listener_show_message_cb), monitor); +} + +static void +on_watcher_status_message_changed (GSWatcher *watcher, + GParamSpec *pspec, + GSMonitor *monitor) +{ + char *text; + g_object_get (watcher, "status-message", &text, NULL); + gs_manager_set_status_message (monitor->priv->manager, text); + g_free (text); +} + +static void +disconnect_watcher_signals (GSMonitor *monitor) +{ + g_signal_handlers_disconnect_by_func (monitor->priv->watcher, watcher_idle_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->watcher, watcher_idle_notice_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->watcher, on_watcher_status_message_changed, monitor); +} + +static void +connect_watcher_signals (GSMonitor *monitor) +{ + g_signal_connect (monitor->priv->watcher, "idle-changed", + G_CALLBACK (watcher_idle_cb), monitor); + g_signal_connect (monitor->priv->watcher, "idle-notice-changed", + G_CALLBACK (watcher_idle_notice_cb), monitor); + g_signal_connect (monitor->priv->watcher, "notify::status-message", + G_CALLBACK (on_watcher_status_message_changed), monitor); + +} + +static void +disconnect_manager_signals (GSMonitor *monitor) +{ + g_signal_handlers_disconnect_by_func (monitor->priv->manager, manager_activated_cb, monitor); + g_signal_handlers_disconnect_by_func (monitor->priv->manager, manager_deactivated_cb, monitor); +} + +static void +connect_manager_signals (GSMonitor *monitor) +{ + g_signal_connect (monitor->priv->manager, "activated", + G_CALLBACK (manager_activated_cb), monitor); + g_signal_connect (monitor->priv->manager, "deactivated", + G_CALLBACK (manager_deactivated_cb), monitor); +} + +static void +disconnect_prefs_signals (GSMonitor *monitor) +{ + g_signal_handlers_disconnect_by_func (monitor->priv->prefs, _gs_monitor_update_from_prefs, monitor); +} + +static void +connect_prefs_signals (GSMonitor *monitor) +{ + g_signal_connect_swapped (monitor->priv->prefs, "changed", + G_CALLBACK (_gs_monitor_update_from_prefs), monitor); +} + +static void +gs_monitor_init (GSMonitor *monitor) +{ + + monitor->priv = GS_MONITOR_GET_PRIVATE (monitor); + + monitor->priv->prefs = gs_prefs_new (); + connect_prefs_signals (monitor); + + monitor->priv->listener = gs_listener_new (); + connect_listener_signals (monitor); + + monitor->priv->fade = gs_fade_new (); + monitor->priv->grab = gs_grab_new (); + + monitor->priv->watcher = gs_watcher_new (); + connect_watcher_signals (monitor); + + monitor->priv->manager = gs_manager_new (); + connect_manager_signals (monitor); + + _gs_monitor_update_from_prefs (monitor, monitor->priv->prefs); +} + +static void +gs_monitor_finalize (GObject *object) +{ + GSMonitor *monitor; + + g_return_if_fail (object != NULL); + g_return_if_fail (GS_IS_MONITOR (object)); + + monitor = GS_MONITOR (object); + + g_return_if_fail (monitor->priv != NULL); + + disconnect_watcher_signals (monitor); + disconnect_listener_signals (monitor); + disconnect_manager_signals (monitor); + disconnect_prefs_signals (monitor); + + g_object_unref (monitor->priv->fade); + g_object_unref (monitor->priv->grab); + g_object_unref (monitor->priv->watcher); + g_object_unref (monitor->priv->listener); + g_object_unref (monitor->priv->manager); + g_object_unref (monitor->priv->prefs); + + G_OBJECT_CLASS (gs_monitor_parent_class)->finalize (object); +} + +GSMonitor * +gs_monitor_new (void) +{ + GSMonitor *monitor; + + monitor = g_object_new (GS_TYPE_MONITOR, NULL); + + return GS_MONITOR (monitor); +} + +gboolean +gs_monitor_start (GSMonitor *monitor, + GError **error) +{ + g_return_val_if_fail (GS_IS_MONITOR (monitor), FALSE); + + if (! gs_listener_acquire (monitor->priv->listener, error)) + { + return FALSE; + } + + return TRUE; +} |