first commit

1 files changed, 528 insertions, 0 deletions

diff --git a/src/gs-monitor.c b/src/gs-monitor.c
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+/* -*- 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;
+}