/Main/src/DynamicDataDisplay/Charts/Axes/Numeric/CustomBaseNumericLabelProvider.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using Microsoft.Research.DynamicDataDisplay;



namespace Microsoft.Research.DynamicDataDisplay.Charts.Axes.Numeric

{

	public class CustomBaseNumericLabelProvider : LabelProvider<double>

	{

		private double customBase = 2;

		/// <summary>

		/// Gets or sets the custom base.

		/// </summary>

		/// <value>The custom base.</value>

		public double CustomBase

		{

			get { return customBase; }

			set

			{

				if (Double.IsNaN(value))

					throw new ArgumentException(Strings.Exceptions.CustomBaseTicksProviderBaseIsNaN);

				if (value <= 0)

					throw new ArgumentOutOfRangeException(Strings.Exceptions.CustomBaseTicksProviderBaseIsTooSmall);



				customBase = value;

			}

		}



		/// <summary>

		/// Initializes a new instance of the <see cref="CustomBaseNumericLabelProvider"/> class.

		/// </summary>

		public CustomBaseNumericLabelProvider() { }



		/// <summary>

		/// Initializes a new instance of the <see cref="CustomBaseNumericLabelProvider"/> class.

		/// </summary>

		public CustomBaseNumericLabelProvider(double customBase)

			: this()

		{

			CustomBase = customBase;

		}



		/// <summary>

		/// Initializes a new instance of the <see cref="CustomBaseNumericLabelProvider"/> class.

		/// </summary>

		/// <param name="customBase">The custom base.</param>

		/// <param name="customBaseString">The custom base string.</param>

		public CustomBaseNumericLabelProvider(double customBase, string customBaseString)

			: this(customBase)

		{

			CustomBaseString = customBaseString;

		}



		private string customBaseString = null;

		/// <summary>

		/// Gets or sets the custom base string.

		/// </summary>

		/// <value>The custom base string.</value>

		public string CustomBaseString

		{

			get { return customBaseString; }

			set

			{

				if (customBaseString != value)

				{

					customBaseString = value;

					RaiseChanged();

				}

			}

		}



		protected override string GetStringCore(LabelTickInfo<double> tickInfo)

		{

			double value = tickInfo.Tick / customBase;



			string customBaseStr = customBaseString ?? customBase.ToString();

			string result;

			if (value == 1)

				result = customBaseStr;

			else if (value == -1)

			{

				result = "-" + customBaseStr;

			}

			else

				result = value.ToString() + customBaseStr;



			return result;

		}

	}

}