using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Microsoft.Research.DynamicDataDisplay.Charts;

using System.Windows;

using Microsoft.Research.DynamicDataDisplay.Common;



namespace Microsoft.Research.DynamicDataDisplay

{

	public sealed class GenericChartPlotter<THorizontal, TVertical>

	{

		private readonly AxisBase<THorizontal> horizontalAxis;

		public AxisBase<THorizontal> HorizontalAxis

		{

			get { return horizontalAxis; }

		}



		private readonly AxisBase<TVertical> verticalAxis;

		public AxisBase<TVertical> VerticalAxis

		{

			get { return verticalAxis; }

		}



		private readonly ChartPlotter plotter;

		public ChartPlotter Plotter

		{

			get { return plotter; }

		}



		public Func<THorizontal, double> HorizontalToDoubleConverter

		{

			get { return horizontalAxis.ConvertToDouble; }

		}



		public Func<double, THorizontal> DoubleToHorizontalConverter

		{

			get { return horizontalAxis.ConvertFromDouble; }

		}



		public Func<TVertical, double> VerticalToDoubleConverter

		{

			get { return verticalAxis.ConvertToDouble; }

		}



		public Func<double, TVertical> DoubleToVerticalConverter

		{

			get { return verticalAxis.ConvertFromDouble; }

		}



		internal GenericChartPlotter(ChartPlotter plotter) : this(plotter, plotter.MainHorizontalAxis as AxisBase<THorizontal>, plotter.MainVerticalAxis as AxisBase<TVertical>) { }



		internal GenericChartPlotter(ChartPlotter plotter, AxisBase<THorizontal> horizontalAxis, AxisBase<TVertical> verticalAxis)

		{

			if (horizontalAxis == null)

				throw new ArgumentNullException(Strings.Exceptions.PlotterMainHorizontalAxisShouldNotBeNull);

			if (verticalAxis == null)

				throw new ArgumentNullException(Strings.Exceptions.PlotterMainVerticalAxisShouldNotBeNull);



			this.horizontalAxis = horizontalAxis;

			this.verticalAxis = verticalAxis;



			this.plotter = plotter;

		}



		public GenericRect<THorizontal, TVertical> ViewportRect

		{

			get

			{

				DataRect viewportRect = plotter.Viewport.Visible;

				return CreateGenericRect(viewportRect);

			}

			set

			{

				DataRect viewportRect = CreateRect(value);

				plotter.Viewport.Visible = viewportRect;

			}

		}



		public GenericRect<THorizontal, TVertical> DataRect

		{

			get

			{

				DataRect dataRect = plotter.Viewport.Visible.ViewportToData(plotter.Viewport.Transform);

				return CreateGenericRect(dataRect);

			}

			set

			{

				DataRect dataRect = CreateRect(value);

				plotter.Viewport.Visible = dataRect.DataToViewport(plotter.Viewport.Transform);

			}

		}



		private DataRect CreateRect(GenericRect<THorizontal, TVertical> value)

		{

			double xMin = HorizontalToDoubleConverter(value.XMin);

			double xMax = HorizontalToDoubleConverter(value.XMax);

			double yMin = VerticalToDoubleConverter(value.YMin);

			double yMax = VerticalToDoubleConverter(value.YMax);



			return new DataRect(new Point(xMin, yMin), new Point(xMax, yMax));

		}



		private GenericRect<THorizontal, TVertical> CreateGenericRect(DataRect rect)

		{

			double xMin = rect.XMin;

			double xMax = rect.XMax;

			double yMin = rect.YMin;

			double yMax = rect.YMax;



			GenericRect<THorizontal, TVertical> res = new GenericRect<THorizontal, TVertical>(

				DoubleToHorizontalConverter(xMin),

				DoubleToVerticalConverter(yMin),

				DoubleToHorizontalConverter(xMax),

				DoubleToVerticalConverter(yMax));



			return res;

		}



	}

}