Initial Commit

Charts/Axes/TimeSpan/TimeSpanAxis.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts
+{
+	/// <summary>
+	/// Represents axis with values of type TimeSpan.
+	/// </summary>
+	public class TimeSpanAxis : AxisBase<TimeSpan>
+	{
+		/// <summary>
+		/// Initializes a new instance of the <see cref="TimeSpanAxis"/> class with default values conversion.
+		/// </summary>
+		public TimeSpanAxis()
+			: base(new TimeSpanAxisControl(),
+				DoubleToTimeSpan, TimeSpanToDouble)
+		{ }
+
+		private static readonly long minTicks = TimeSpan.MinValue.Ticks;
+		private static readonly long maxTicks = TimeSpan.MaxValue.Ticks;
+		private static TimeSpan DoubleToTimeSpan(double value)
+		{
+			long ticks = (long)(value * 10000000000L);
+
+			// todo should we throw an exception if number of ticks is too big or small?
+			if (ticks < minTicks)
+				ticks = minTicks;
+			else if (ticks > maxTicks)
+				ticks = maxTicks;
+
+			return new TimeSpan(ticks);
+		}
+
+		private static double TimeSpanToDouble(TimeSpan time)
+		{
+			return time.Ticks / 10000000000.0;
+		}
+
+		/// <summary>
+		/// Sets conversions of axis - functions used to convert values of axis type to and from double values of viewport.
+		/// Sets both ConvertToDouble and ConvertFromDouble properties.
+		/// </summary>
+		/// <param name="min">The minimal viewport value.</param>
+		/// <param name="minValue">The value of axis type, corresponding to minimal viewport value.</param>
+		/// <param name="max">The maximal viewport value.</param>
+		/// <param name="maxValue">The value of axis type, corresponding to maximal viewport value.</param>
+		public override void SetConversion(double min, TimeSpan minValue, double max, TimeSpan maxValue)
+		{
+			var conversion = new TimeSpanToDoubleConversion(min, minValue, max, maxValue);
+
+			ConvertToDouble = conversion.ToDouble;
+			ConvertFromDouble = conversion.FromDouble;
+		}
+	}
+}