Initial Commit

Charts/Shapes/ViewportShape.cs

@@ -0,0 +1,82 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Shapes;
+using System.Windows.Media;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts
+{
+	/// <summary>
+	/// Represents a base class for simple shapes with viewport-bound coordinates.
+	/// </summary>
+	public abstract class ViewportShape : Shape, IPlotterElement
+	{
+		static ViewportShape()
+		{
+			Type type = typeof(ViewportShape);
+			Shape.StrokeProperty.AddOwner(type, new FrameworkPropertyMetadata(Brushes.Blue));
+			Shape.StrokeThicknessProperty.AddOwner(type, new FrameworkPropertyMetadata(2.0));
+		}
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="ViewportShape"/> class.
+		/// </summary>
+		protected ViewportShape() { }
+
+		protected void UpdateUIRepresentation()
+		{
+			if (Plotter == null)
+				return;
+
+			UpdateUIRepresentationCore();
+		}
+		protected virtual void UpdateUIRepresentationCore() { }
+
+		#region IPlotterElement Members
+
+		private Plotter2D plotter;
+		void IPlotterElement.OnPlotterAttached(Plotter plotter)
+		{
+			plotter.CentralGrid.Children.Add(this);
+
+			Plotter2D plotter2d = (Plotter2D)plotter;
+			this.plotter = plotter2d;
+			plotter2d.Viewport.PropertyChanged += Viewport_PropertyChanged;
+
+			UpdateUIRepresentation();
+		}
+
+		private void Viewport_PropertyChanged(object sender, ExtendedPropertyChangedEventArgs e)
+		{
+			OnViewportPropertyChanged(e);
+		}
+
+		protected virtual void OnViewportPropertyChanged(ExtendedPropertyChangedEventArgs e)
+		{
+			UpdateUIRepresentation();
+		}
+
+		void IPlotterElement.OnPlotterDetaching(Plotter plotter)
+		{
+			Plotter2D plotter2d = (Plotter2D)plotter;
+			plotter2d.Viewport.PropertyChanged -= Viewport_PropertyChanged;
+			plotter.CentralGrid.Children.Remove(this);
+
+			this.plotter = null;
+		}
+
+		public Plotter2D Plotter
+		{
+			get { return plotter; }
+		}
+
+		Plotter IPlotterElement.Plotter
+		{
+			get { return plotter; }
+		}
+
+		#endregion
+	}
+}