internal DateTime GetFirstDateToRenderForDisplayMode(DateTime date, CalendarDisplayMode displayMode)
{
date = date.Date;
DateTime firstDateToRender = date;
if (displayMode == CalendarDisplayMode.MultiDayView)
{
DayOfWeek firstDayOfWeek = this.GetFirstDayOfWeek();
DateTime firstDateOfCurrentWeek = CalendarMathHelper.GetFirstDayOfCurrentWeek(date, firstDayOfWeek);
if (!(firstDateOfCurrentWeek.Date <= date.Date && firstDateOfCurrentWeek.AddDays(7).Date >= date.Date))
{
firstDateToRender = firstDateOfCurrentWeek;
}
if (!this.multiDayViewSettings.WeekendsVisible)
{
firstDateToRender = CalendarMathHelper.AddBusinessDays(date, -this.multiDayViewSettings.VisibleDays);
}
else
{
firstDateToRender = date.AddDays(-this.multiDayViewSettings.VisibleDays);
}
}
else if (displayMode == CalendarDisplayMode.MonthView)
{
DayOfWeek firstDayOfWeekToUse = this.GetFirstDayOfWeek();
DateTime monthStartDate = CalendarMathHelper.GetFirstDateOfMonth(date);
int daysToSubtract = (int)monthStartDate.DayOfWeek - (int)firstDayOfWeekToUse;
if (daysToSubtract <= 0)
{
daysToSubtract += 7;
}
firstDateToRender = monthStartDate.Date == DateTime.MinValue.Date ? monthStartDate : monthStartDate.AddDays(-daysToSubtract);
}
else if (displayMode == CalendarDisplayMode.YearView)
{
firstDateToRender = CalendarMathHelper.GetFirstDateOfYear(date);
}
else if (displayMode == CalendarDisplayMode.DecadeView)
{
firstDateToRender = CalendarMathHelper.GetFirstDateOfDecade(date);
}
else if (displayMode == CalendarDisplayMode.CenturyView)
{
firstDateToRender = CalendarMathHelper.GetFirstDateOfCentury(date);
}
return(firstDateToRender);
}
internal override DateTime GetFirstDateToRender(DateTime date)
{
DayOfWeek firstDayOfWeek = this.Calendar.GetFirstDayOfWeek();
DateTime firstDateOfCurrentWeek = CalendarMathHelper.GetFirstDayOfCurrentWeek(date, firstDayOfWeek);
if (firstDateOfCurrentWeek.Date <= date.Date && firstDateOfCurrentWeek.AddDays(7).Date >= date.Date)
{
return(date);
}
return(firstDateOfCurrentWeek);
}
internal override DateTime GetFirstDateToRender(DateTime date)
{
DayOfWeek firstDayOfWeek = this.Calendar.GetFirstDayOfWeek();
DateTime firstDateOfCurrentWeek = CalendarMathHelper.GetFirstDayOfCurrentWeek(date, firstDayOfWeek);
if (!(firstDateOfCurrentWeek.Date <= date.Date && firstDateOfCurrentWeek.AddDays(7).Date >= date.Date))
{
date = firstDateOfCurrentWeek;
}
if (!this.Calendar.multiDayViewSettings.WeekendsVisible)
{
date = CalendarMathHelper.AddBusinessDays(date, -this.BufferItemsCount);
}
else
{
date = date.AddDays(-this.BufferItemsCount);
}
return(date);
}
