Monthly calendar basics.

Wino.Core.Domain/Models/Calendar/CalendarTypeStrategies/MonthCalendarDrawingStrategy.cs

@@ -0,0 +1,36 @@
+using System;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Domain.Extensions;
+
+namespace Wino.Core.Domain.Models.Calendar.CalendarTypeStrategies
+{
+    public class MonthCalendarDrawingStrategy : BaseCalendarTypeDrawingStrategy
+    {
+        public MonthCalendarDrawingStrategy(CalendarSettings settings)
+            : base(settings, CalendarDisplayType.Month)
+        {
+        }
+
+        public override DateRange GetNextDateRange(DateRange CurrentDateRange, int DayDisplayCount)
+        {
+            return DateTimeExtensions.GetMonthDateRangeStartingWeekday(CurrentDateRange.EndDate, Settings.FirstDayOfWeek);
+        }
+
+        public override DateRange GetPreviousDateRange(DateRange CurrentDateRange, int DayDisplayCount)
+        {
+            return DateTimeExtensions.GetMonthDateRangeStartingWeekday(CurrentDateRange.StartDate, Settings.FirstDayOfWeek);
+        }
+
+        public override DateRange GetRenderDateRange(DateTime DisplayDate, int DayDisplayCount)
+        {
+            // Load 2 months at first.
+            var initialRange = DateTimeExtensions.GetMonthDateRangeStartingWeekday(DisplayDate.Date, Settings.FirstDayOfWeek);
+
+            var nextRange = GetNextDateRange(initialRange, DayDisplayCount);
+
+            return new DateRange(initialRange.StartDate, nextRange.EndDate);
+        }
+
+        public override int GetRenderDayCount(DateTime DisplayDate, int DayDisplayCount) => 35;
+    }
+}