Initial Commit

Charts/Shapes/Segment.cs

@@ -0,0 +1,104 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows.Media;
+using System.Windows;
+using System.Windows.Shapes;
+using Microsoft.Research.DynamicDataDisplay;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts
+{
+	/// <summary>
+	/// Represents a segment with start and end points bound to viewport coordinates.
+	/// </summary>
+	public class Segment : ViewportShape
+	{
+		/// <summary>
+		/// Initializes a new instance of the <see cref="Segment"/> class.
+		/// </summary>
+		public Segment() { }
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="Segment"/> class.
+		/// </summary>
+		/// <param name="startPoint">The start point of segment.</param>
+		/// <param name="endPoint">The end point of segment.</param>
+		public Segment(Point startPoint, Point endPoint)
+		{
+			StartPoint = startPoint;
+			EndPoint = endPoint;
+		}
+
+		/// <summary>
+		/// Gets or sets the start point of segment.
+		/// </summary>
+		/// <value>The start point.</value>
+		public Point StartPoint
+		{
+			get { return (Point)GetValue(StartPointProperty); }
+			set { SetValue(StartPointProperty, value); }
+		}
+
+		/// <summary>
+		/// Identifies the StartPoint dependency property.
+		/// </summary>
+		public static readonly DependencyProperty StartPointProperty = DependencyProperty.Register(
+		  "StartPoint",
+		  typeof(Point),
+		  typeof(Segment),
+		  new FrameworkPropertyMetadata(new Point(), OnPointChanged));
+
+		protected static void OnPointChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+		{
+			Segment segment = (Segment)d;
+			segment.UpdateUIRepresentation();
+		}
+
+		protected virtual void OnPointChanged() { }
+
+		/// <summary>
+		/// Gets or sets the end point of segment.
+		/// </summary>
+		/// <value>The end point.</value>
+		public Point EndPoint
+		{
+			get { return (Point)GetValue(EndPointProperty); }
+			set { SetValue(EndPointProperty, value); }
+		}
+
+		/// <summary>
+		/// Identifies the EndPoint dependency property.
+		/// </summary>
+		public static readonly DependencyProperty EndPointProperty = DependencyProperty.Register(
+		  "EndPoint",
+		  typeof(Point),
+		  typeof(Segment),
+		  new FrameworkPropertyMetadata(new Point(), OnPointChanged));
+
+		protected override void UpdateUIRepresentationCore()
+		{
+			if (Plotter == null)
+				return;
+
+			var transform = Plotter.Viewport.Transform;
+
+			Point p1 = StartPoint.DataToScreen(transform);
+			Point p2 = EndPoint.DataToScreen(transform);
+
+			lineGeometry.StartPoint = p1;
+			lineGeometry.EndPoint = p2;
+		}
+
+		LineGeometry lineGeometry = new LineGeometry();
+		protected LineGeometry LineGeometry
+		{
+			get { return lineGeometry; }
+		}
+
+		protected override Geometry DefiningGeometry
+		{
+			get { return lineGeometry; }
+		}
+	}
+}