mark events that last multiple days in the yearly view correctly

app/src/main/kotlin/com/simplemobiletools/calendar/YearlyCalendarImpl.kt

@@ -17,15 +17,31 @@ class YearlyCalendarImpl(val callback: YearlyCalendar, val context: Context) : D
 
     override fun gotEvents(events: MutableList<Event>) {
         val arr = SparseArray<ArrayList<Int>>(12)
-        for (e in events) {
-            val dateTime = DateTime().withMillis(e.startTS * 1000L)
+        for (event in events) {
+            val startDateTime = DateTime().withMillis(event.startTS * 1000L)
+            markDay(arr, startDateTime)
+
+            val startCode = Formatter.getDayCodeFromDateTime(startDateTime)
+            val endDateTime = DateTime().withMillis(event.endTS * 1000L)
+            val endCode = Formatter.getDayCodeFromDateTime(endDateTime)
+            if (startCode != endCode) {
+                var currDateTime = startDateTime
+                while (Formatter.getDayCodeFromDateTime(currDateTime) != endCode) {
+                    currDateTime = currDateTime.plusDays(1)
+                    markDay(arr, currDateTime)
+                }
+            }
+        }
+        callback.updateYearlyCalendar(arr)
+    }
+
+    private fun markDay(arr: SparseArray<ArrayList<Int>>, dateTime: DateTime) {
         val month = dateTime.monthOfYear
         val day = dateTime.dayOfMonth
+
         if (arr[month] == null)
             arr.put(month, ArrayList<Int>())
 
         arr.get(month).add(day)
     }
-        callback.updateYearlyCalendar(arr)
-    }
 }