Initial Commit

Charts/Navigation/OldAxisNavigation.cs

@@ -0,0 +1,205 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows.Input;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using Microsoft.Research.DynamicDataDisplay;
+using Microsoft.Research.DynamicDataDisplay.Common;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts.Navigation
+{
+	/// <summary>
+	/// Represents a navigation methods upon one axis - mouse panning and zooming.
+	/// </summary>
+	[Obsolete("Will be removed soon. Use AxisNavigation instead.")]
+	public class OldAxisNavigation : ContentGraph
+	{
+		/// <summary>
+		/// Initializes a new instance of the <see cref="AxisNavigation"/> class.
+		/// </summary>
+		public OldAxisNavigation()
+		{
+			Focusable = false;
+
+			SetHorizontalOrientation();
+			Content = content;
+		}
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="AxisNavigation"/> class.
+		/// </summary>
+		/// <param name="orientation">The orientation.</param>
+		public OldAxisNavigation(Orientation orientation)
+		{
+			Orientation = orientation;
+			Content = content;
+		}
+
+		private void SetHorizontalOrientation()
+		{
+			Grid.SetColumn(this, 1);
+			Grid.SetRow(this, 2);
+		}
+
+		private void SetVerticalOrientation()
+		{
+			// todo should automatically search for location of axes as they can be 
+			// not only from the left or bottom.
+			Grid.SetColumn(this, 0);
+			Grid.SetRow(this, 1);
+		}
+
+		private Orientation orientation = Orientation.Horizontal;
+		/// <summary>
+		/// Gets or sets the orientation of AxisNavigation.
+		/// </summary>
+		/// <value>The orientation.</value>
+		public Orientation Orientation
+		{
+			get { return orientation; }
+			set
+			{
+				if (orientation != value)
+				{
+					orientation = value;
+					OnOrientationChanged();
+				}
+			}
+		}
+
+		private void OnOrientationChanged()
+		{
+			switch (orientation)
+			{
+				case Orientation.Horizontal:
+					SetHorizontalOrientation();
+					break;
+				case Orientation.Vertical:
+					SetVerticalOrientation();
+					break;
+				default:
+					break;
+			}
+		}
+
+		private bool lmbPressed = false;
+		private Point dragStart;
+
+		private CoordinateTransform Transform
+		{
+			get { return Plotter2D.Viewport.Transform; }
+		}
+
+		protected override Panel HostPanel
+		{
+			get { return Plotter2D.MainGrid; }
+		}
+
+		private readonly Panel content = new Canvas { Background = Brushes.Transparent };
+		private readonly SolidColorBrush fillBrush = new SolidColorBrush(Color.FromRgb(255, 228, 209)).MakeTransparent(0.2);
+
+		private Point lmbInitialPosition;
+		protected Point LmbInitialPosition
+		{
+			get { return lmbInitialPosition; }
+		}
+
+		protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
+		{
+			base.OnMouseLeftButtonDown(e);
+
+			lmbInitialPosition = e.GetPosition(this);
+
+			dragStart = lmbInitialPosition.ScreenToViewport(Transform);
+			lmbPressed = true;
+
+			content.Background = fillBrush;
+
+			CaptureMouse();
+		}
+
+		protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
+		{
+			base.OnMouseLeftButtonUp(e);
+			lmbPressed = false;
+
+			ClearValue(CursorProperty);
+			content.Background = Brushes.Transparent;
+
+			ReleaseMouseCapture();
+		}
+
+		protected override void OnMouseMove(MouseEventArgs e)
+		{
+			if (lmbPressed)
+			{
+				Point mousePos = e.GetPosition(this).ScreenToViewport(Transform);
+
+				DataRect visible = Plotter2D.Viewport.Visible;
+				double delta;
+				if (orientation == Orientation.Horizontal)
+				{
+					delta = (mousePos - dragStart).X;
+					visible.XMin -= delta;
+				}
+				else
+				{
+					delta = (mousePos - dragStart).Y;
+					visible.YMin -= delta;
+				}
+
+				if (e.GetPosition(this) != lmbInitialPosition)
+				{
+					Cursor = orientation == Orientation.Horizontal ? Cursors.ScrollWE : Cursors.ScrollNS;
+				}
+
+				Plotter2D.Viewport.Visible = visible;
+			}
+		}
+
+		private const double wheelZoomSpeed = 1.2;
+		protected override void OnMouseWheel(MouseWheelEventArgs e)
+		{
+			Point mousePos = e.GetPosition(this);
+			int delta = -e.Delta;
+
+			Point zoomTo = mousePos.ScreenToViewport(Transform);
+
+			double zoomSpeed = Math.Abs(delta / Mouse.MouseWheelDeltaForOneLine);
+			zoomSpeed *= wheelZoomSpeed;
+			if (delta < 0)
+			{
+				zoomSpeed = 1 / zoomSpeed;
+			}
+
+			DataRect visible = Plotter2D.Viewport.Visible.Zoom(zoomTo, zoomSpeed);
+			DataRect oldVisible = Plotter2D.Viewport.Visible;
+			if (orientation == Orientation.Horizontal)
+			{
+				visible.YMin = oldVisible.YMin;
+				visible.Height = oldVisible.Height;
+			}
+			else
+			{
+				visible.XMin = oldVisible.XMin;
+				visible.Width = oldVisible.Width;
+			}
+			Plotter2D.Viewport.Visible = visible;
+
+			e.Handled = true;
+		}
+
+		protected override void OnLostFocus(RoutedEventArgs e)
+		{
+			base.OnLostFocus(e);
+
+			ClearValue(CursorProperty);
+			content.Background = Brushes.Transparent;
+
+			ReleaseMouseCapture();
+		}
+	}
+}