Initial Commit

Charts/Axes/GenericLocational/GenericLocationalLabelProvider.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts.Axes.GenericLocational
+{
+	public class GenericLocationalLabelProvider<TItem, TAxis> : LabelProviderBase<TAxis>
+	{
+		private readonly IList<TItem> collection;
+		private readonly Func<TItem, string> displayMemberMapping;
+
+		public GenericLocationalLabelProvider(IList<TItem> collection, Func<TItem, string> displayMemberMapping)
+		{
+			if (collection == null)
+				throw new ArgumentNullException("collection");
+			if (displayMemberMapping == null)
+				throw new ArgumentNullException("displayMemberMapping");
+
+			this.collection = collection;
+			this.displayMemberMapping = displayMemberMapping;
+		}
+
+		int startIndex;
+		public override UIElement[] CreateLabels(ITicksInfo<TAxis> ticksInfo)
+		{
+			var ticks = ticksInfo.Ticks;
+
+			if (ticks.Length == 0)
+				return EmptyLabelsArray;
+
+			startIndex = (int)ticksInfo.Info;
+
+			UIElement[] result = new UIElement[ticks.Length];
+
+			LabelTickInfo<TAxis> labelInfo = new LabelTickInfo<TAxis> { Info = ticksInfo.Info };
+
+			for (int i = 0; i < result.Length; i++)
+			{
+				var tick = ticks[i];
+				labelInfo.Tick = tick;
+				labelInfo.Index = i;
+
+				string labelText = GetString(labelInfo);
+
+				TextBlock label = new TextBlock { Text = labelText };
+
+				ApplyCustomView(labelInfo, label);
+
+				result[i] = label;
+			}
+
+			return result;
+		}
+
+		protected override string GetStringCore(LabelTickInfo<TAxis> tickInfo)
+		{
+			return displayMemberMapping(collection[tickInfo.Index + startIndex]);
+		}
+	}
+}