source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/ViewportConstraints/DateTimeHorizontalAxisConstraint.cs @ 13376

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Microsoft.Research.DynamicDataDisplay.ViewportConstraints
{
  public sealed class DateTimeHorizontalAxisConstraint : ViewportConstraint
  {
    private readonly double minSeconds = new TimeSpan(DateTime.MinValue.Ticks).TotalSeconds;
    private readonly double maxSeconds = new TimeSpan(DateTime.MaxValue.Ticks).TotalSeconds;

    public override DataRect Apply(DataRect previousDataRect, DataRect proposedDataRect, Viewport2D viewport)
    {
      DataRect borderRect = DataRect.Create(minSeconds, proposedDataRect.YMin, maxSeconds, proposedDataRect.YMax);
      if (proposedDataRect.IntersectsWith(borderRect))
      {
        DataRect croppedRect = DataRect.Intersect(proposedDataRect, borderRect);
        return croppedRect;
      }

      return previousDataRect;
    }
  }
}