private object CalculateDateTimeIntervalType(DoubleRange actualRange, Size availableSize, ref DateTimeIntervalType dateTimeIntervalType)
{
var dateTimeMin = ChartExtensionUtils.FromOADate(actualRange.Start);
var dateTimeMax = ChartExtensionUtils.FromOADate(actualRange.End);
var timeSpan = dateTimeMax.Subtract(dateTimeMin);
double interval = 0;
switch (dateTimeIntervalType)
{
case DateTimeIntervalType.Years:
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalDays / 365), availableSize);
break;
case DateTimeIntervalType.Months:
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalDays / 30), availableSize);
break;
case DateTimeIntervalType.Days:
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalDays), availableSize);
break;
case DateTimeIntervalType.Hours:
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalHours), availableSize);
break;
case DateTimeIntervalType.Minutes:
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalMinutes), availableSize);
break;
case DateTimeIntervalType.Seconds:
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalSeconds), availableSize);
break;
case DateTimeIntervalType.Milliseconds:
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalMilliseconds), availableSize);
break;
case DateTimeIntervalType.Auto:
var range = new DoubleRange(0, timeSpan.TotalDays / 365);
interval = base.CalculateNiceInterval(range, availableSize);
if (interval >= 1)
{
dateTimeIntervalType = DateTimeIntervalType.Years;
return(interval);
}
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalDays / 30), availableSize);
if (interval >= 1)
{
dateTimeIntervalType = DateTimeIntervalType.Months;
return(interval);
}
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalDays), availableSize);
if (interval >= 1)
{
dateTimeIntervalType = DateTimeIntervalType.Days;
return(interval);
}
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalHours), availableSize);
if (interval >= 1)
{
dateTimeIntervalType = DateTimeIntervalType.Hours;
return(interval);
}
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalMinutes), availableSize);
if (interval >= 1)
{
dateTimeIntervalType = DateTimeIntervalType.Minutes;
return(interval);
}
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalSeconds), availableSize);
if (interval >= 1)
{
dateTimeIntervalType = DateTimeIntervalType.Seconds;
return(interval);
}
interval = base.CalculateNiceInterval(new DoubleRange(0, timeSpan.TotalMilliseconds), availableSize);
dateTimeIntervalType = DateTimeIntervalType.Milliseconds;
break;
}
return(interval);
}
