source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Axes/DateTime/DateTimeTicksProvider.cs @ 13847

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Globalization;
using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;

namespace Microsoft.Research.DynamicDataDisplay.Charts
{
  /// <summary>
  /// Represents a ticks provider for ticks of <see cref="T:System.DateTime"/> type.
  /// </summary>
  public class DateTimeTicksProvider : TimeTicksProviderBase<DateTime>
  {
    /// <summary>
    /// Initializes a new instance of the <see cref="DateTimeTicksProvider"/> class.
    /// </summary>
    public DateTimeTicksProvider() { }

    static DateTimeTicksProvider()
    {
      Providers.Add(DifferenceIn.Year, new YearDateTimeProvider());
      Providers.Add(DifferenceIn.Month, new MonthDateTimeProvider());
      Providers.Add(DifferenceIn.Day, new DayDateTimeProvider());
      Providers.Add(DifferenceIn.Hour, new HourDateTimeProvider());
      Providers.Add(DifferenceIn.Minute, new MinuteDateTimeProvider());
      Providers.Add(DifferenceIn.Second, new SecondDateTimeProvider());
      Providers.Add(DifferenceIn.Millisecond, new MillisecondDateTimeProvider());

      MinorProviders.Add(DifferenceIn.Year, new MinorDateTimeProvider(new YearDateTimeProvider()));
      MinorProviders.Add(DifferenceIn.Month, new MinorDateTimeProvider(new MonthDateTimeProvider()));
      MinorProviders.Add(DifferenceIn.Day, new MinorDateTimeProvider(new DayDateTimeProvider()));
      MinorProviders.Add(DifferenceIn.Hour, new MinorDateTimeProvider(new HourDateTimeProvider()));
      MinorProviders.Add(DifferenceIn.Minute, new MinorDateTimeProvider(new MinuteDateTimeProvider()));
      MinorProviders.Add(DifferenceIn.Second, new MinorDateTimeProvider(new SecondDateTimeProvider()));
      MinorProviders.Add(DifferenceIn.Millisecond, new MinorDateTimeProvider(new MillisecondDateTimeProvider()));
    }

    protected sealed override TimeSpan GetDifference(DateTime start, DateTime end)
    {
      return end - start;
    }
  }

  internal static class DateTimeArrayExtensions
  {
    internal static int GetIndex(this DateTime[] array, DateTime value)
    {
      for (int i = 0; i < array.Length - 1; i++)
      {
        if (array[i] <= value && value < array[i + 1])
          return i;
      }

      return array.Length - 1;
    }
  }

  internal sealed class MinorDateTimeProvider : MinorTimeProviderBase<DateTime>
  {
    public MinorDateTimeProvider(ITicksProvider<DateTime> owner) : base(owner) { }

    protected override bool IsInside(DateTime value, Range<DateTime> range)
    {
      return range.Min < value && value < range.Max;
    }
  }

  internal sealed class YearDateTimeProvider : DatePeriodTicksProvider
  {
    protected override DifferenceIn GetDifferenceCore()
    {
      return DifferenceIn.Year;
    }

    protected override int[] GetTickCountsCore()
    {
      return new int[] { 20, 10, 5, 4, 2, 1 };
    }

    protected override int GetSpecificValue(DateTime start, DateTime dt)
    {
      return dt.Year;
    }

    protected override DateTime GetStart(DateTime start, int value, int step)
    {
      int year = start.Year;
      int newYear = (year / step) * step;
      if (newYear == 0) newYear = 1;

      return new DateTime(newYear, 1, 1);
    }

    protected override bool IsMinDate(DateTime dt)
    {
      return dt.Year == DateTime.MinValue.Year;
    }

    protected override DateTime AddStep(DateTime dt, int step)
    {
      if (dt.Year + step > DateTime.MaxValue.Year)
        return DateTime.MaxValue;

      return dt.AddYears(step);
    }
  }

  internal sealed class MonthDateTimeProvider : DatePeriodTicksProvider
  {
    protected override DifferenceIn GetDifferenceCore()
    {
      return DifferenceIn.Month;
    }

    protected override int[] GetTickCountsCore()
    {
      return new int[] { 12, 6, 4, 3, 2, 1 };
    }

    protected override int GetSpecificValue(DateTime start, DateTime dt)
    {
      return dt.Month + (dt.Year - start.Year) * 12;
    }

    protected override DateTime GetStart(DateTime start, int value, int step)
    {
      return new DateTime(start.Year, 1, 1);
    }

    protected override bool IsMinDate(DateTime dt)
    {
      return dt.Month == DateTime.MinValue.Month;
    }

    protected override DateTime AddStep(DateTime dt, int step)
    {
      return dt.AddMonths(step);
    }
  }

  internal sealed class DayDateTimeProvider : DatePeriodTicksProvider
  {
    protected override DifferenceIn GetDifferenceCore()
    {
      return DifferenceIn.Day;
    }

    protected override int[] GetTickCountsCore()
    {
      return new int[] { 30, 15, 10, 5, 2, 1 };
    }

    protected override int GetSpecificValue(DateTime start, DateTime dt)
    {
      return (dt - start).Days;
    }

    protected override DateTime GetStart(DateTime start, int value, int step)
    {
      return start.Date;
    }

    protected override bool IsMinDate(DateTime dt)
    {
      return dt.Day == 1;
    }

    protected override DateTime AddStep(DateTime dt, int step)
    {
      return dt.AddDays(step);
    }
  }

  internal sealed class HourDateTimeProvider : DatePeriodTicksProvider
  {
    protected override DifferenceIn GetDifferenceCore()
    {
      return DifferenceIn.Hour;
    }

    protected override int[] GetTickCountsCore()
    {
      return new int[] { 24, 12, 6, 4, 3, 2, 1 };
    }

    protected override int GetSpecificValue(DateTime start, DateTime dt)
    {
      return (int)(dt - start).TotalHours;
    }

    protected override DateTime GetStart(DateTime start, int value, int step)
    {
      return start.Date;
    }

    protected override bool IsMinDate(DateTime dt)
    {
      return false;
    }

    protected override DateTime AddStep(DateTime dt, int step)
    {
      return dt.AddHours(step);
    }
  }

  internal sealed class MinuteDateTimeProvider : DatePeriodTicksProvider
  {
    protected override DifferenceIn GetDifferenceCore()
    {
      return DifferenceIn.Minute;
    }

    protected override int[] GetTickCountsCore()
    {
      return new int[] { 60, 30, 20, 15, 10, 5, 4, 3, 2 };
    }

    protected override int GetSpecificValue(DateTime start, DateTime dt)
    {
      return (int)(dt - start).TotalMinutes;
    }

    protected override DateTime GetStart(DateTime start, int value, int step)
    {
      return start.Date.AddHours(start.Hour);
    }

    protected override bool IsMinDate(DateTime dt)
    {
      return false;
    }

    protected override DateTime AddStep(DateTime dt, int step)
    {
      return dt.AddMinutes(step);
    }
  }

  internal sealed class SecondDateTimeProvider : DatePeriodTicksProvider
  {
    protected override DifferenceIn GetDifferenceCore()
    {
      return DifferenceIn.Second;
    }

    protected override int[] GetTickCountsCore()
    {
      return new int[] { 60, 30, 20, 15, 10, 5, 4, 3, 2 };
    }

    protected override int GetSpecificValue(DateTime start, DateTime dt)
    {
      return (int)(dt - start).TotalSeconds;
    }

    protected override DateTime GetStart(DateTime start, int value, int step)
    {
      return start.Date.AddHours(start.Hour).AddMinutes(start.Minute);
    }

    protected override bool IsMinDate(DateTime dt)
    {
      return false;
    }

    protected override DateTime AddStep(DateTime dt, int step)
    {
      return dt.AddSeconds(step);
    }
  }

  internal sealed class MillisecondDateTimeProvider : DatePeriodTicksProvider
  {
    protected override DifferenceIn GetDifferenceCore()
    {
      return DifferenceIn.Millisecond;
    }

    protected override int[] GetTickCountsCore()
    {
      return new int[] { 100, 50, 40, 25, 20, 10, 5, 4, 2 };
    }

    protected override int GetSpecificValue(DateTime start, DateTime dt)
    {
      return (int)(dt - start).TotalMilliseconds;
    }

    protected override DateTime GetStart(DateTime start, int value, int step)
    {
      return start.Date.AddHours(start.Hour).AddMinutes(start.Minute).AddSeconds(start.Second);
    }

    protected override bool IsMinDate(DateTime dt)
    {
      return false;
    }

    protected override DateTime AddStep(DateTime dt, int step)
    {
      return dt.AddMilliseconds(step);
    }
  }
}