Initial Commit

Charts/Navigation/HorizontalScrollBar.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using Microsoft.Research.DynamicDataDisplay.Common;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts.Navigation
+{
+	/// <summary>
+	/// Represents a horizontal scroll bar on the borrom of <see cref="Plotter"/>.
+	/// Uses ChartPlotter.Plotter.Viewport.DataDomain property as a source of data about current position and position limits.
+	/// </summary>
+	public sealed class HorizontalScrollBar : PlotterScrollBar
+	{
+		/// <summary>
+		/// Initializes a new instance of the <see cref="HorizontalScrollBar"/> class.
+		/// </summary>
+		public HorizontalScrollBar()
+		{
+			ScrollBar.Orientation = Orientation.Horizontal;
+		}
+
+		protected override void UpdateScrollBar(Viewport2D viewport)
+		{
+			if (viewport != null && !viewport.Domain.IsEmpty)
+			{
+				var visibleRange = new Range<double>(viewport.Visible.XMin, viewport.Visible.XMax);
+
+				double size = visibleRange.Max - visibleRange.Min;
+				ScrollBar.ViewportSize = size;
+
+				var domainRange = new Range<double>(viewport.Domain.XMin, viewport.Domain.XMax);
+				ScrollBar.Minimum = domainRange.Min;
+				ScrollBar.Maximum = domainRange.Max - size;
+
+				ScrollBar.Value = visibleRange.Min;
+
+				ScrollBar.Visibility = Visibility.Visible;
+			}
+			else
+			{
+				ScrollBar.Visibility = Visibility.Collapsed;
+			}
+		}
+
+		protected override DataRect CreateVisibleRect(DataRect rect, double value)
+		{
+			rect.XMin = value;
+			return rect;
+		}
+
+		protected override Panel GetHostPanel(Plotter plotter)
+		{
+			return plotter.BottomPanel;
+		}
+	}
+}