Schedule an alarm for midnight to change the

1999-01-28  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* calendar.c (calendar_init_alarms): Schedule an alarm for
	midnight to change the calendar_day_begin/calendar_day_end.

	* alarm.c (alarm_ready): If we reschedule, there is no need to
	activate any pending alarms.

svn path=/trunk/; revision=634

6 files changed, 67 insertions, 18 deletions

diff --git a/calendar/gui/alarm-notify/alarm.c b/calendar/gui/alarm-notify/alarm.c
index 30d3534955..3848fb87fd 100644
--- a/calendar/gui/alarm-notify/alarm.c
+++ b/calendar/gui/alarm-notify/alarm.c
@@ -74,6 +74,7 @@ alarm_ready (void *closure, int fd, GdkInputCondition cond)
 				itimer.it_value.tv_sec = next->activation_time - now;
 				itimer.it_value.tv_usec = 0;
 				setitimer (ITIMER_REAL, &itimer, NULL);
+				break;
 			} else {
 				g_free (ar);
 				ar = next;
@@ -95,7 +96,14 @@ alarm_compare_by_time (gconstpointer a, gconstpointer b)
 	return (diff < 0) ? -1 : (diff > 0) ? 1 : 0;
 }
 
-void
+/**
+ * alarm_add:
+ *
+ * Tries to schedule @alarm.
+ *
+ * Returns TRUE if the alarm was scheduled.
+ */
+gboolean
 alarm_add (CalendarAlarm *alarm, AlarmFunction fn, void *closure)
 {
 	time_t now = time (NULL);
@@ -104,7 +112,7 @@ alarm_add (CalendarAlarm *alarm, AlarmFunction fn, void *closure)
 
 	/* If it already expired, do not add it */
 	if (alarm_time < now)
-		return;
+		return FALSE;
 	
 	ar = g_new0 (AlarmRecord, 1);
 	ar->activation_time = alarm_time;
@@ -127,6 +135,8 @@ alarm_add (CalendarAlarm *alarm, AlarmFunction fn, void *closure)
 		v = setitimer (ITIMER_REAL, &itimer, NULL);
 		head_alarm = alarms->data;
 	}
+
+	return TRUE;
 }
 
 int 
diff --git a/calendar/gui/alarm-notify/alarm.h b/calendar/gui/alarm-notify/alarm.h
index 3c2ab18ff1..81710bda5e 100644
--- a/calendar/gui/alarm-notify/alarm.h
+++ b/calendar/gui/alarm-notify/alarm.h
@@ -5,8 +5,8 @@
 
 typedef void (*AlarmFunction)(time_t time, CalendarAlarm *which, void *closuse);
 
-void alarm_init    (void);
-void alarm_add     (CalendarAlarm *alarm, AlarmFunction fn, void *closure);
-int  alarm_kill    (void *closure);
+void      alarm_init    (void);
+gboolean  alarm_add     (CalendarAlarm *alarm, AlarmFunction fn, void *closure);
+int       alarm_kill    (void *closure);
 
 #endif
diff --git a/calendar/gui/alarm.c b/calendar/gui/alarm.c
index 30d3534955..3848fb87fd 100644
--- a/calendar/gui/alarm.c
+++ b/calendar/gui/alarm.c
@@ -74,6 +74,7 @@ alarm_ready (void *closure, int fd, GdkInputCondition cond)
 				itimer.it_value.tv_sec = next->activation_time - now;
 				itimer.it_value.tv_usec = 0;
 				setitimer (ITIMER_REAL, &itimer, NULL);
+				break;
 			} else {
 				g_free (ar);
 				ar = next;
@@ -95,7 +96,14 @@ alarm_compare_by_time (gconstpointer a, gconstpointer b)
 	return (diff < 0) ? -1 : (diff > 0) ? 1 : 0;
 }
 
-void
+/**
+ * alarm_add:
+ *
+ * Tries to schedule @alarm.
+ *
+ * Returns TRUE if the alarm was scheduled.
+ */
+gboolean
 alarm_add (CalendarAlarm *alarm, AlarmFunction fn, void *closure)
 {
 	time_t now = time (NULL);
@@ -104,7 +112,7 @@ alarm_add (CalendarAlarm *alarm, AlarmFunction fn, void *closure)
 
 	/* If it already expired, do not add it */
 	if (alarm_time < now)
-		return;
+		return FALSE;
 	
 	ar = g_new0 (AlarmRecord, 1);
 	ar->activation_time = alarm_time;
@@ -127,6 +135,8 @@ alarm_add (CalendarAlarm *alarm, AlarmFunction fn, void *closure)
 		v = setitimer (ITIMER_REAL, &itimer, NULL);
 		head_alarm = alarms->data;
 	}
+
+	return TRUE;
 }
 
 int 
diff --git a/calendar/gui/alarm.h b/calendar/gui/alarm.h
index 3c2ab18ff1..81710bda5e 100644
--- a/calendar/gui/alarm.h
+++ b/calendar/gui/alarm.h
@@ -5,8 +5,8 @@
 
 typedef void (*AlarmFunction)(time_t time, CalendarAlarm *which, void *closuse);
 
-void alarm_init    (void);
-void alarm_add     (CalendarAlarm *alarm, AlarmFunction fn, void *closure);
-int  alarm_kill    (void *closure);
+void      alarm_init    (void);
+gboolean  alarm_add     (CalendarAlarm *alarm, AlarmFunction fn, void *closure);
+int       alarm_kill    (void *closure);
 
 #endif
diff --git a/calendar/gui/calendar.c b/calendar/gui/calendar.c
index e5b050620e..c9f4dc9493 100644
--- a/calendar/gui/calendar.c
+++ b/calendar/gui/calendar.c
@@ -23,14 +23,19 @@
 /* Our day range */
 time_t calendar_day_begin, calendar_day_end;
 
+static void calendar_init_alarms (Calendar *cal);
+
 Calendar *
 calendar_new (char *title)
 {
 	Calendar *cal;
 
 	cal = g_new0 (Calendar, 1);
+
 	cal->title = g_strdup (title);
 
+	calendar_init_alarms (cal);
+	
 	return cal;
 }
 
@@ -47,7 +52,7 @@ try_add (iCalObject *ico, CalendarAlarm *alarm, time_t start, time_t end)
 }
 
 static int
-add_alarm (iCalObject *obj, time_t start, time_t end, void *closure)
+add_object_alarms (iCalObject *obj, time_t start, time_t end, void *closure)
 {
 	if (obj->aalarm.enabled)
 		try_add (obj, &obj->aalarm, start, end);
@@ -78,7 +83,7 @@ ical_object_try_alarms (iCalObject *obj)
 	if (max_o == -1)
 		return;
 	
-	ical_object_generate_events (obj, calendar_day_begin, calendar_day_end + max_o, add_alarm, obj);
+	ical_object_generate_events (obj, calendar_day_begin, calendar_day_end + max_o, add_object_alarms, obj);
 }
 
 void
@@ -275,12 +280,21 @@ calendar_load_from_vobject (Calendar *cal, VObject *vcal)
 	}
 }
 
+static void
+calendar_set_day (void)
+{
+	time_t calendar_today;
+	
+	calendar_today     = time (NULL);
+	calendar_day_begin = time_day_begin (calendar_today);
+	calendar_day_end   = time_day_end (calendar_today);
+}
+
 /* Loads a calendar from a file */
 char *
 calendar_load (Calendar *cal, char *fname)
 {
 	VObject *vcal;
-	time_t calendar_today;
 	struct stat s;
 	
 	if (cal->filename){
@@ -295,9 +309,8 @@ calendar_load (Calendar *cal, char *fname)
 
 	stat (fname, &s);
 	cal->file_time = s.st_mtime;
-	calendar_today     = time (NULL);
-	calendar_day_begin = time_day_begin (calendar_today);
-	calendar_day_end   = time_day_end (calendar_today);
+
+	calendar_set_day ();
 		
 	calendar_load_from_vobject (cal, vcal);
 	cleanVObject (vcal);
@@ -417,3 +430,19 @@ calendar_object_changed (Calendar *cal, iCalObject *obj, int flags)
 		;
 	ical_object_try_alarms (obj);
 }
+
+static void
+calendar_day_change (time_t time, CalendarAlarm *which, void *closure)
+{
+	calendar_set_day ();
+}
+
+static void
+calendar_init_alarms (Calendar *cal)
+{
+	CalendarAlarm day_change_alarm;
+
+	day_change_alarm.trigger = calendar_day_end;
+	alarm_add (&day_change_alarm, calendar_day_change, cal);
+}
+
diff --git a/calendar/gui/main.c b/calendar/gui/main.c
index 16072c221c..23409be930 100644
--- a/calendar/gui/main.c
+++ b/calendar/gui/main.c
@@ -505,8 +505,8 @@ setup_appbar (GtkWidget *gcal)
 {
         GnomeAppBar *appbar;
 	
-        appbar = gnome_appbar_new(FALSE, TRUE, GNOME_PREFERENCES_USER);
-	gnome_app_set_statusbar(GNOME_APP (gcal), GTK_WIDGET(appbar));
+        appbar = gnome_appbar_new (FALSE, TRUE, GNOME_PREFERENCES_USER);
+	gnome_app_set_statusbar (GNOME_APP (gcal), GTK_WIDGET(appbar));
 }
 
 static gint