pressed date getter

A getter function added for pressed_date.

lv_objx/lv_calendar.c

@@ -361,6 +361,17 @@ lv_calendar_date_t * lv_calendar_get_showed_date(const lv_obj_t * calendar)
     return &ext->showed_date;
 }
 
+/**
+ * Get the the pressed date.
+ * @param calendar pointer to a calendar object
+ * @return pointer to an `lv_calendar_date_t` variable containing the pressed date.
+ */
+lv_calendar_date_t * lv_calendar_get_pressed_date(const lv_obj_t * calendar)
+{
+    lv_calendar_ext_t * ext = lv_obj_get_ext_attr(calendar);
+    return &ext->pressed_date;
+}
+
 /**
  * Get the the highlighted dates
  * @param calendar pointer to a calendar object