using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Research.DynamicDataDisplay.Converters;
using System.Windows.Controls;
using System.Globalization;

namespace Microsoft.Research.DynamicDataDisplay.Charts
{
	internal sealed class LegendBottomButtonIsEnabledConverter : ThreeValuesMultiConverter<double, double, double>
	{
		protected override object ConvertCore(double value1, double value2, double value3, Type targetType, object parameter, CultureInfo culture)
		{
			double extentHeight = value1;
			double viewportHeight = value2;
			double offset = value3;

			return viewportHeight < (extentHeight - offset);
		}
	}
}