source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Axes/TimeSpan/TimeSpanTicksProviderBase.cs @ 12747

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

namespace Microsoft.Research.DynamicDataDisplay.Charts
{
  internal abstract class TimeSpanTicksProviderBase : TimePeriodTicksProvider<TimeSpan>
  {
    protected sealed override bool Continue(TimeSpan current, TimeSpan end)
    {
      return current < end;
    }

    protected sealed override TimeSpan RoundDown(TimeSpan start, TimeSpan end)
    {
      return RoundDown(start, Difference);
    }

    protected sealed override TimeSpan RoundUp(TimeSpan start, TimeSpan end)
    {
      return RoundUp(end, Difference);
    }

    protected static TimeSpan Shift(TimeSpan span, DifferenceIn diff)
    {
      TimeSpan res = span;

      TimeSpan shift = new TimeSpan();
      switch (diff)
      {
        case DifferenceIn.Year:
        case DifferenceIn.Month:
        case DifferenceIn.Day:
          shift = TimeSpan.FromDays(1);
          break;
        case DifferenceIn.Hour:
          shift = TimeSpan.FromHours(1);
          break;
        case DifferenceIn.Minute:
          shift = TimeSpan.FromMinutes(1);
          break;
        case DifferenceIn.Second:
          shift = TimeSpan.FromSeconds(1);
          break;
        case DifferenceIn.Millisecond:
          shift = TimeSpan.FromMilliseconds(1);
          break;
        default:
          break;
      }

      res = res.Add(shift);
      return res;
    }

    protected sealed override TimeSpan RoundDown(TimeSpan timeSpan, DifferenceIn diff)
    {
      TimeSpan res = timeSpan;

      if (timeSpan.Ticks < 0)
      {
        res = RoundUp(timeSpan.Duration(), diff).Negate();
      }
      else
      {
        switch (diff)
        {
          case DifferenceIn.Year:
          case DifferenceIn.Month:
          case DifferenceIn.Day:
            res = TimeSpan.FromDays(timeSpan.Days);
            break;
          case DifferenceIn.Hour:
            res = TimeSpan.FromDays(timeSpan.Days).
              Add(TimeSpan.FromHours(timeSpan.Hours));
            break;
          case DifferenceIn.Minute:
            res = TimeSpan.FromDays(timeSpan.Days).
              Add(TimeSpan.FromHours(timeSpan.Hours)).
              Add(TimeSpan.FromMinutes(timeSpan.Minutes));
            break;
          case DifferenceIn.Second:
            res = TimeSpan.FromDays(timeSpan.Days).
              Add(TimeSpan.FromHours(timeSpan.Hours)).
              Add(TimeSpan.FromMinutes(timeSpan.Minutes)).
              Add(TimeSpan.FromSeconds(timeSpan.Seconds));
            break;
          case DifferenceIn.Millisecond:
            res = timeSpan;
            break;
          default:
            break;
        }
      }

      return res;
    }

    protected sealed override TimeSpan RoundUp(TimeSpan dateTime, DifferenceIn diff)
    {
      TimeSpan res = RoundDown(dateTime, diff);
      res = Shift(res, diff);

      return res;
    }

    protected override List<TimeSpan> Trim(List<TimeSpan> ticks, Range<TimeSpan> range)
    {
      int startIndex = 0;
      for (int i = 0; i < ticks.Count - 1; i++)
      {
        if (ticks[i] <= range.Min && range.Min <= ticks[i + 1])
        {
          startIndex = i;
          break;
        }
      }

      int endIndex = ticks.Count - 1;
      for (int i = ticks.Count - 1; i >= 1; i--)
      {
        if (ticks[i] >= range.Max && range.Max > ticks[i - 1])
        {
          endIndex = i;
          break;
        }
      }

      List<TimeSpan> res = new List<TimeSpan>(endIndex - startIndex + 1);
      for (int i = startIndex; i <= endIndex; i++)
      {
        res.Add(ticks[i]);
      }

      return res;
    }

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

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

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

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

    protected override TimeSpan GetStart(TimeSpan start, int value, int step)
    {
      double days = start.TotalDays;
      double newDays = ((int)(days / step)) * step;
      if (newDays > days) { 
        newDays -= step;
      }
      return TimeSpan.FromDays(newDays);
      //return TimeSpan.FromDays(start.Days);
    }

    protected override TimeSpan AddStep(TimeSpan dt, int step)
    {
      return dt.Add(TimeSpan.FromDays(step));
    }
  }

  internal sealed class HourTimeSpanProvider : TimeSpanTicksProviderBase
  {
    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(TimeSpan start, TimeSpan dt)
    {
      return (int)(dt - start).TotalHours;
    }

    protected override TimeSpan GetStart(TimeSpan start, int value, int step)
    {
      double hours = start.TotalHours;
      double newHours = ((int)(hours / step)) * step;
      if (newHours > hours)
      {
        newHours -= step;
      }
      return TimeSpan.FromHours(newHours);
      //return TimeSpan.FromDays(start.Days);
    }

    protected override TimeSpan AddStep(TimeSpan dt, int step)
    {
      return dt.Add(TimeSpan.FromHours(step));
    }
  }

  internal sealed class MinuteTimeSpanProvider : TimeSpanTicksProviderBase
  {
    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(TimeSpan start, TimeSpan dt)
    {
      return (int)(dt - start).TotalMinutes;
    }

    protected override TimeSpan GetStart(TimeSpan start, int value, int step)
    {
      double minutes = start.TotalMinutes;
      double newMinutes = ((int)(minutes / step)) * step;
      if (newMinutes > minutes)
      {
        newMinutes -= step;
      }

      return TimeSpan.FromMinutes(newMinutes);
    }

    protected override TimeSpan AddStep(TimeSpan dt, int step)
    {
      return dt.Add(TimeSpan.FromMinutes(step));
    }
  }

  internal sealed class SecondTimeSpanProvider : TimeSpanTicksProviderBase
  {
    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(TimeSpan start, TimeSpan dt)
    {
      return (int)(dt - start).TotalSeconds;
    }

    protected override TimeSpan GetStart(TimeSpan start, int value, int step)
    {
      double seconds = start.TotalSeconds;
      double newSeconds = ((int)(seconds / step)) * step;
      if (newSeconds > seconds) {
        newSeconds -= step;
      }

      return TimeSpan.FromSeconds(newSeconds);
      //return new TimeSpan(start.Days, start.Hours, start.Minutes, 0);
    }

    protected override TimeSpan AddStep(TimeSpan dt, int step)
    {
      return dt.Add(TimeSpan.FromSeconds(step));
    }
  }

  internal sealed class MillisecondTimeSpanProvider : TimeSpanTicksProviderBase
  {
    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(TimeSpan start, TimeSpan dt)
    {
      return (int)(dt - start).TotalMilliseconds;
    }

    protected override TimeSpan GetStart(TimeSpan start, int value, int step)
    {
      double millis = start.TotalMilliseconds;
      double newMillis = ((int)(millis / step)) * step;
      if (newMillis > millis) {
        newMillis -= step;
      }

      return TimeSpan.FromMilliseconds(newMillis);
      //return start;
    }

    protected override TimeSpan AddStep(TimeSpan dt, int step)
    {
      return dt.Add(TimeSpan.FromMilliseconds(step));
    }
  }
}