Initial Commit

Charts/Navigation/PlotterScrollBar.cs

@@ -0,0 +1,96 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows.Controls.Primitives;
+using System.Windows.Controls;
+using System.Windows;
+using Microsoft.Research.DynamicDataDisplay.Charts;
+using Microsoft.Research.DynamicDataDisplay.Common;
+
+namespace Microsoft.Research.DynamicDataDisplay
+{
+	public abstract class PlotterScrollBar : IPlotterElement
+	{
+		protected PlotterScrollBar()
+		{
+			scrollBar.Scroll += OnScroll;
+		}
+
+		private void OnScroll(object sender, ScrollEventArgs e)
+		{
+			DataRect visible = plotter.Viewport.Visible;
+			visible = CreateVisibleRect(visible, scrollBar.Value);
+			plotter.Viewport.Visible = visible;
+		}
+
+		private readonly ScrollBar scrollBar = new ScrollBar();
+		protected ScrollBar ScrollBar
+		{
+			get { return scrollBar; }
+		}
+
+		private Plotter2D plotter;
+		protected Plotter2D Plotter
+		{
+			get { return plotter; }
+		}
+
+		private void OnViewportPropertyChanged(object sender, ExtendedPropertyChangedEventArgs e)
+		{
+			if (e.PropertyName == "Visible" || e.PropertyName == "Output")
+			{
+				UpdateScrollBar((Viewport2D)sender);
+			}
+		}
+
+		#region IPlotterElement Members
+
+		void IPlotterElement.OnPlotterAttached(Plotter plotter)
+		{
+			GetHostPanel(plotter).Children.Add(scrollBar);
+
+			Plotter2D plotter2d = (Plotter2D)plotter;
+			this.plotter = plotter2d;
+			var viewport = plotter2d.Viewport;
+			viewport.PropertyChanged += OnViewportPropertyChanged;
+			viewport.DomainChanged += OnViewportDomainChanged;
+
+			UpdateScrollBar(viewport);
+		}
+
+		protected abstract void UpdateScrollBar(Viewport2D viewport);
+
+		protected virtual void SetValue(Range<double> visibleRange, Range<double> domainRange)
+		{
+			scrollBar.Value = visibleRange.Min;
+		}
+
+		private void OnViewportDomainChanged(object sender, EventArgs e)
+		{
+			UpdateScrollBar((Viewport2D)sender);
+		}
+
+		protected abstract DataRect CreateVisibleRect(DataRect rect, double value);
+		protected abstract Panel GetHostPanel(Plotter plotter);
+
+		void IPlotterElement.OnPlotterDetaching(Plotter plotter)
+		{
+			this.plotter.Viewport.PropertyChanged -= OnViewportPropertyChanged;
+			this.plotter.Viewport.DomainChanged -= OnViewportDomainChanged;
+
+			GetHostPanel(plotter).Children.Remove(scrollBar);
+
+			UpdateScrollBar(null);
+
+			this.plotter = null;
+		}
+
+		Plotter IPlotterElement.Plotter
+		{
+			get { return plotter; }
+		}
+
+		#endregion
+	}
+}