135 lines
3.1 KiB
C#
135 lines
3.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;
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namespace Microsoft.Research.DynamicDataDisplay.Charts
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{
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public abstract class DateTimeTicksProviderBase : ITicksProvider<DateTime>
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{
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public event EventHandler Changed;
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protected void RaiseChanged()
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{
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if (Changed != null)
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{
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Changed(this, EventArgs.Empty);
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}
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}
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protected static DateTime Shift(DateTime dateTime, DifferenceIn diff)
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{
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DateTime res = dateTime;
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switch (diff)
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{
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case DifferenceIn.Year:
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res = res.AddYears(1);
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break;
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case DifferenceIn.Month:
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res = res.AddMonths(1);
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break;
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case DifferenceIn.Day:
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res = res.AddDays(1);
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break;
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case DifferenceIn.Hour:
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res = res.AddHours(1);
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break;
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case DifferenceIn.Minute:
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res = res.AddMinutes(1);
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break;
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case DifferenceIn.Second:
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res = res.AddSeconds(1);
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break;
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case DifferenceIn.Millisecond:
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res = res.AddMilliseconds(1);
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break;
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default:
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break;
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}
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return res;
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}
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protected static DateTime RoundDown(DateTime dateTime, DifferenceIn diff)
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{
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DateTime res = dateTime;
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switch (diff)
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{
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case DifferenceIn.Year:
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res = new DateTime(dateTime.Year, 1, 1);
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break;
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case DifferenceIn.Month:
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res = new DateTime(dateTime.Year, dateTime.Month, 1);
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break;
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case DifferenceIn.Day:
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res = dateTime.Date;
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break;
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case DifferenceIn.Hour:
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res = dateTime.Date.AddHours(dateTime.Hour);
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break;
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case DifferenceIn.Minute:
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res = dateTime.Date.AddHours(dateTime.Hour).AddMinutes(dateTime.Minute);
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break;
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case DifferenceIn.Second:
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res = dateTime.Date.AddHours(dateTime.Hour).AddMinutes(dateTime.Minute).AddSeconds(dateTime.Second);
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break;
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case DifferenceIn.Millisecond:
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res = dateTime.Date.AddHours(dateTime.Hour).AddMinutes(dateTime.Minute).AddSeconds(dateTime.Second).AddMilliseconds(dateTime.Millisecond);
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break;
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default:
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break;
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}
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DebugVerify.Is(res <= dateTime);
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return res;
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}
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protected static DateTime RoundUp(DateTime dateTime, DifferenceIn diff)
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{
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DateTime res = RoundDown(dateTime, diff);
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switch (diff)
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{
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case DifferenceIn.Year:
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res = res.AddYears(1);
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break;
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case DifferenceIn.Month:
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res = res.AddMonths(1);
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break;
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case DifferenceIn.Day:
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res = res.AddDays(1);
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break;
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case DifferenceIn.Hour:
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res = res.AddHours(1);
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break;
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case DifferenceIn.Minute:
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res = res.AddMinutes(1);
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break;
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case DifferenceIn.Second:
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res = res.AddSeconds(1);
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break;
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case DifferenceIn.Millisecond:
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res = res.AddMilliseconds(1);
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break;
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default:
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break;
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}
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return res;
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}
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#region ITicksProvider<DateTime> Members
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public abstract ITicksInfo<DateTime> GetTicks(Range<DateTime> range, int ticksCount);
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public abstract int DecreaseTickCount(int ticksCount);
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public abstract int IncreaseTickCount(int ticksCount);
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public abstract ITicksProvider<DateTime> MinorProvider { get; }
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public abstract ITicksProvider<DateTime> MajorProvider { get; }
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#endregion
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}
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}
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