Initial Commit

Charts/Legend items/LegendBottomButtonIsEnabledConverter.cs

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+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);
+		}
+	}
+}