[gnome-calendar] event-widget: add helper API

[Erick Pérez Castellanos <erickpc src gnome org>]

commit 719a294fae35daaac5c95596775e4eb28e87becc
Author: Erick Pérez Castellanos <erick red gmail com>
Date:   Sat Dec 13 16:13:03 2014 -0500

    event-widget: add helper API
    
    Added GcalEventWidget::is_multiday to check if an event span more than
    one day.
    Added GcalEventWidget::compare_by_length which compares two event
    widgets according to the duration of the events they represent.

 src/gcal-event-widget.c |   45 +++++++++++++++++++++++++++++++++++++++++++++
 src/gcal-event-widget.h |    5 +++++
 2 files changed, 50 insertions(+), 0 deletions(-)
---
diff --git a/src/gcal-event-widget.c b/src/gcal-event-widget.c
index caa8843..b74879a 100644
--- a/src/gcal-event-widget.c
+++ b/src/gcal-event-widget.c
@@ -1000,6 +1000,18 @@ gcal_event_widget_get_all_day (GcalEventWidget *event)
   return all_day;
 }
 
+gboolean
+gcal_event_widget_is_multiday (GcalEventWidget *event)
+{
+  GcalEventWidgetPrivate *priv;
+  priv = gcal_event_widget_get_instance_private (event);
+
+  if (priv->dt_end == NULL)
+    return FALSE;
+
+  return priv->dt_start->day != priv->dt_end->day;
+}
+
 void
 gcal_event_widget_set_has_reminders (GcalEventWidget *event,
                                      gboolean         has_reminders)
@@ -1081,3 +1093,36 @@ gcal_event_widget_equal (GcalEventWidget *widget1,
 
   return same_id;
 }
+
+/**
+ * gcal_event_widget_compare_by_length:
+ * @widget1:
+ * @widget2:
+ *
+ * Compare two widgets by the duration of the events they represent. From shortest to longest span.
+ *
+ * Returns: negative value if a < b ; zero if a = b ; positive value if a > b
+ **/
+gint
+gcal_event_widget_compare_by_length (GcalEventWidget *widget1,
+                                     GcalEventWidget *widget2)
+{
+  GcalEventWidgetPrivate *priv1;
+  GcalEventWidgetPrivate *priv2;
+
+  time_t time_s1, time_s2;
+  time_t time_e1, time_e2;
+
+  priv1 = gcal_event_widget_get_instance_private (widget1);
+  priv2 = gcal_event_widget_get_instance_private (widget2);
+
+  time_e1 = time_s1 = icaltime_as_timet (*(priv1->dt_start));
+  time_e2 = time_s2 = icaltime_as_timet (*(priv2->dt_start));
+
+  if (priv1->dt_end != NULL)
+    time_e1 = icaltime_as_timet (*(priv1->dt_end));
+  if (priv2->dt_end)
+    time_e2 = icaltime_as_timet (*(priv2->dt_end));
+
+  return (time_e2 - time_s2) - (time_e1 - time_s1);
+}
diff --git a/src/gcal-event-widget.h b/src/gcal-event-widget.h
index 75268c4..99fe239 100644
--- a/src/gcal-event-widget.h
+++ b/src/gcal-event-widget.h
@@ -95,6 +95,8 @@ void          gcal_event_widget_set_all_day                (GcalEventWidget    *
 
 gboolean     gcal_event_widget_get_all_day                 (GcalEventWidget    *event);
 
+gboolean     gcal_event_widget_is_multiday                 (GcalEventWidget    *event);
+
 void         gcal_event_widget_set_has_reminders           (GcalEventWidget    *event,
                                                             gboolean            has_reminders);
 
@@ -105,6 +107,9 @@ GcalEventData* gcal_event_widget_get_data                  (GcalEventWidget    *
 gboolean     gcal_event_widget_equal                       (GcalEventWidget    *widget1,
                                                             GcalEventWidget    *widget2);
 
+gint         gcal_event_widget_compare_by_length           (GcalEventWidget    *widget1,
+                                                            GcalEventWidget    *widget2);
+
 G_END_DECLS
 
 #endif /* __GCAL_EVENT_WIDGET_H__ */