diff options
| -rw-r--r-- | applets/clock/clock.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/applets/clock/clock.c b/applets/clock/clock.c index 8b427d2e..0ee49628 100644 --- a/applets/clock/clock.c +++ b/applets/clock/clock.c @@ -85,6 +85,16 @@ #define KEY_TEMPERATURE_UNIT "temperature-unit" #define KEY_SPEED_UNIT "speed-unit" +/* For watching for when the system resumes from sleep mode (e.g. suspend) + * and updating the clock as soon as that happens. */ +#define LOGIND_RUNNING() (access("/run/systemd/seats/", F_OK) >= 0) +#define SYSTEMD_LOGIND_SERVICE "org.freedesktop.login1" +#define SYSTEMD_LOGIND_PATH "/org/freedesktop/login1" +#define SYSTEMD_LOGIND_INTERFACE "org.freedesktop.login1.Manager" +#define CK_SERVICE "org.freedesktop.ConsoleKit" +#define CK_MANAGER_PATH "/org/freedesktop/ConsoleKit/Manager" +#define CK_MANAGER_INTERFACE "org.freedesktop.ConsoleKit.Manager" + #define _clock_get_widget(x,y) (GTK_WIDGET (gtk_builder_get_object ((x)->builder, (y)))) enum { @@ -186,6 +196,8 @@ struct _ClockData { GSettings *settings; const gchar *weather_icon_name; + + GDBusProxy *system_manager_proxy; }; /* Used to count the number of clock instances. It's there to know when we @@ -747,6 +759,12 @@ free_locations (ClockData *cd) static void destroy_clock (GtkWidget * widget, ClockData *cd) { + if (cd->system_manager_proxy) + { + g_signal_handlers_disconnect_by_data (cd->system_manager_proxy, cd); + g_object_unref (cd->system_manager_proxy); + } + if (cd->settings) g_signal_handlers_disconnect_by_data( cd->settings, cd); @@ -2478,6 +2496,86 @@ load_gsettings (ClockData *cd) set_locations (cd, cities); } +/* When the system manager (ConsoleKit or systemd-logind) reports that + * the system has just resumed from sleep mode (e.g. suspend/hibernate), + * update the clock and the weather/temperature readings. That way, if + * the user suspended the system for an hour and then wakes the system up, + * the user will immediately see the current time and (if possible) + * updated weather data. Without this extra code, the user would most + * likely wake the system up and see the weather from an hour ago, and if + * the clock is set to not display seconds (only minutes), the clock may + * show an inaccurate time for up to a minute after resume. + */ +static void +system_manager_signal_cb (GDBusProxy *proxy, + gchar *sender_name, + gchar *signal_name, + GVariant *parameters, + ClockData *cd) +{ + GVariant *variant; + gboolean active; + + if (g_strcmp0 (signal_name, "PrepareForSleep") == 0) + { + variant = g_variant_get_child_value (parameters, 0); + active = g_variant_get_boolean (variant); + g_variant_unref (variant); + + /* The PrepareForSleep signal is emitted by ConsoleKit2 and + * logind, both before sleep mode is entered, and + * immediately after the system has resumed from sleep mode. + * Listeners of this signal distinguish between the two + * states by checking the parameter to this signal. If the + * parameter is TRUE, the system is about to enter sleep + * mode; if FALSE, the system has resumed from sleep mode. + * We only care about updating the clock after resumption, + * so test if the parameter is FALSE. + */ + if (active == FALSE) + { + update_clock (cd); + update_weather_locations (cd); + } + } +} + +static void +setup_monitor_for_resume (ClockData *cd) +{ + gboolean logind_running; + const char * service; + const char * path; + const char * interface; + + /* If logind is running, connect to logind; otherwise use ConsoleKit. + */ + logind_running = LOGIND_RUNNING (); + if (logind_running) { + service = SYSTEMD_LOGIND_SERVICE; + path = SYSTEMD_LOGIND_PATH; + interface = SYSTEMD_LOGIND_INTERFACE; + } else { + service = CK_SERVICE; + path = CK_MANAGER_PATH; + interface = CK_MANAGER_INTERFACE; + } + + cd->system_manager_proxy = g_dbus_proxy_new_for_bus_sync + (G_BUS_TYPE_SYSTEM, + G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES, + NULL, + service, path, interface, + NULL, NULL); + + if (cd->system_manager_proxy != NULL) { + g_signal_connect (cd->system_manager_proxy, + "g-signal", + G_CALLBACK (system_manager_signal_cb), + cd); + } +} + static gboolean fill_clock_applet (MatePanelApplet *applet) { @@ -2551,6 +2649,11 @@ fill_clock_applet (MatePanelApplet *applet) G_CALLBACK (weather_icon_updated_cb), cd); + /* If ConsoleKit or systemd-logind is available, set up to update + * the clock if/when the system resumes from sleep (e.g. suspend/ + * hibernate). */ + setup_monitor_for_resume (cd); + return TRUE; } |