[12503] | 1 | using System;
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| 2 | using System.Collections.Generic;
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| 3 | using System.Linq;
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| 4 | using System.Text;
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| 5 | using System.Windows;
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| 6 | using System.Windows.Controls;
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| 7 | using System.Windows.Data;
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| 8 | using System.Windows.Documents;
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| 9 | using System.Windows.Input;
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| 10 | using System.Windows.Media;
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| 11 | using System.Windows.Media.Imaging;
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| 12 | using System.Windows.Navigation;
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| 13 | using System.Windows.Shapes;
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| 14 | using System.Diagnostics;
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| 15 | using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;
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| 16 | using Microsoft.Research.DynamicDataDisplay;
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| 17 | using System.ComponentModel;
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| 18 | using System.Diagnostics.CodeAnalysis;
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| 19 | using Microsoft.Research.DynamicDataDisplay.Common;
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| 20 |
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| 21 | namespace Microsoft.Research.DynamicDataDisplay.Charts.Navigation
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| 22 | {
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| 23 | /// <summary>
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| 24 | /// Adds to ChartPlotter two crossed lines, bound to mouse cursor position, and two labels near axes with mouse position in its text.
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| 25 | /// </summary>
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| 26 | public partial class CursorCoordinateGraph : ContentGraph
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| 27 | {
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| 28 | /// <summary>
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| 29 | /// Initializes a new instance of the <see cref="CursorCoordinateGraph"/> class.
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| 30 | /// </summary>
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| 31 | public CursorCoordinateGraph()
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| 32 | {
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| 33 | InitializeComponent();
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| 34 | }
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| 35 |
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| 36 | Vector blockShift = new Vector(3, 3);
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| 37 |
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| 38 | #region Plotter
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| 39 |
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| 40 | protected override void OnPlotterAttached()
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| 41 | {
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| 42 | UIElement parent = (UIElement)Parent;
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| 43 |
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| 44 | parent.MouseMove += parent_MouseMove;
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| 45 | parent.MouseEnter += Parent_MouseEnter;
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| 46 | parent.MouseLeave += Parent_MouseLeave;
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| 47 |
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| 48 | UpdateVisibility();
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| 49 | UpdateUIRepresentation();
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| 50 | }
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| 51 |
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| 52 | protected override void OnPlotterDetaching()
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| 53 | {
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| 54 | UIElement parent = (UIElement)Parent;
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| 55 |
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| 56 | parent.MouseMove -= parent_MouseMove;
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| 57 | parent.MouseEnter -= Parent_MouseEnter;
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| 58 | parent.MouseLeave -= Parent_MouseLeave;
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| 59 | }
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| 60 |
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| 61 | #endregion
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| 62 |
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| 63 | private bool autoHide = true;
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| 64 | /// <summary>
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| 65 | /// Gets or sets a value indicating whether to hide automatically cursor lines when mouse leaves plotter.
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| 66 | /// </summary>
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| 67 | /// <value><c>true</c> if auto hide; otherwise, <c>false</c>.</value>
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| 68 | public bool AutoHide
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| 69 | {
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| 70 | get { return autoHide; }
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| 71 | set { autoHide = value; }
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| 72 | }
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| 73 |
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| 74 | private void Parent_MouseEnter(object sender, MouseEventArgs e)
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| 75 | {
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| 76 | if (autoHide)
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| 77 | {
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| 78 | UpdateVisibility();
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| 79 | }
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| 80 | }
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| 81 |
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| 82 | private void UpdateVisibility()
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| 83 | {
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| 84 | horizLine.Visibility = vertGrid.Visibility = GetHorizontalVisibility();
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| 85 | vertLine.Visibility = horizGrid.Visibility = GetVerticalVisibility();
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| 86 | }
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| 87 |
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| 88 | private Visibility GetHorizontalVisibility()
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| 89 | {
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| 90 | return showHorizontalLine ? Visibility.Visible : Visibility.Hidden;
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| 91 | }
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| 92 |
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| 93 | private Visibility GetVerticalVisibility()
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| 94 | {
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| 95 | return showVerticalLine ? Visibility.Visible : Visibility.Hidden;
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| 96 | }
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| 97 |
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| 98 | private void Parent_MouseLeave(object sender, MouseEventArgs e)
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| 99 | {
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| 100 | if (autoHide)
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| 101 | {
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| 102 | horizLine.Visibility = Visibility.Hidden;
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| 103 | vertLine.Visibility = Visibility.Hidden;
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| 104 | horizGrid.Visibility = Visibility.Hidden;
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| 105 | vertGrid.Visibility = Visibility.Hidden;
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| 106 | }
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| 107 | }
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| 108 |
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| 109 | private bool followMouse = true;
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| 110 | /// <summary>
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| 111 | /// Gets or sets a value indicating whether lines are following mouse cursor position.
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| 112 | /// </summary>
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| 113 | /// <value><c>true</c> if lines are following mouse cursor position; otherwise, <c>false</c>.</value>
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| 114 | public bool FollowMouse
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| 115 | {
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| 116 | get { return followMouse; }
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| 117 | set
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| 118 | {
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| 119 | followMouse = value;
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| 120 |
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| 121 | if (!followMouse)
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| 122 | {
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| 123 | AutoHide = false;
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| 124 | }
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| 125 |
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| 126 | UpdateUIRepresentation();
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | private void parent_MouseMove(object sender, MouseEventArgs e)
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| 131 | {
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| 132 | if (followMouse)
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| 133 | {
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| 134 | UpdateUIRepresentation();
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| 135 | }
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| 136 | }
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| 137 |
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| 138 | protected override void OnViewportPropertyChanged(ExtendedPropertyChangedEventArgs e)
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| 139 | {
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| 140 | UpdateUIRepresentation();
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| 141 | }
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| 142 |
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| 143 | private string customXFormat = null;
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| 144 | /// <summary>
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| 145 | /// Gets or sets the custom format string of x label.
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| 146 | /// </summary>
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| 147 | /// <value>The custom X format.</value>
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| 148 | public string CustomXFormat
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| 149 | {
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| 150 | get { return customXFormat; }
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| 151 | set
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| 152 | {
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| 153 | if (customXFormat != value)
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| 154 | {
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| 155 | customXFormat = value;
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| 156 | UpdateUIRepresentation();
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| 157 | }
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| 158 | }
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| 159 | }
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| 160 |
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| 161 | private string customYFormat = null;
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| 162 | /// <summary>
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| 163 | /// Gets or sets the custom format string of y label.
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| 164 | /// </summary>
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| 165 | /// <value>The custom Y format.</value>
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| 166 | public string CustomYFormat
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| 167 | {
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| 168 | get { return customYFormat; }
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| 169 | set
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| 170 | {
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| 171 | if (customYFormat != value)
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| 172 | {
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| 173 | customYFormat = value;
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| 174 | UpdateUIRepresentation();
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| 175 | }
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| 176 | }
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| 177 | }
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| 178 |
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| 179 | private Func<double, string> xTextMapping = null;
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| 180 | /// <summary>
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| 181 | /// Gets or sets the text mapping of x label - function that builds text from x-coordinate of mouse in data.
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| 182 | /// </summary>
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| 183 | /// <value>The X text mapping.</value>
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| 184 | public Func<double, string> XTextMapping
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| 185 | {
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| 186 | get { return xTextMapping; }
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| 187 | set
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| 188 | {
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| 189 | if (xTextMapping != value)
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| 190 | {
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| 191 | xTextMapping = value;
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| 192 | UpdateUIRepresentation();
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| 193 | }
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| 194 | }
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| 195 | }
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| 196 |
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| 197 | private Func<double, string> yTextMapping = null;
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| 198 | /// <summary>
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| 199 | /// Gets or sets the text mapping of y label - function that builds text from y-coordinate of mouse in data.
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| 200 | /// </summary>
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| 201 | /// <value>The Y text mapping.</value>
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| 202 | public Func<double, string> YTextMapping
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| 203 | {
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| 204 | get { return yTextMapping; }
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| 205 | set
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| 206 | {
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| 207 | if (yTextMapping != value)
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| 208 | {
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| 209 | yTextMapping = value;
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| 210 | UpdateUIRepresentation();
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| 211 | }
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| 212 | }
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| 213 | }
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| 214 |
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| 215 | private bool showHorizontalLine = true;
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| 216 | /// <summary>
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| 217 | /// Gets or sets a value indicating whether to show horizontal line.
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| 218 | /// </summary>
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| 219 | /// <value><c>true</c> if horizontal line is shown; otherwise, <c>false</c>.</value>
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| 220 | public bool ShowHorizontalLine
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| 221 | {
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| 222 | get { return showHorizontalLine; }
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| 223 | set
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| 224 | {
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| 225 | if (showHorizontalLine != value)
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| 226 | {
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| 227 | showHorizontalLine = value;
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| 228 | UpdateVisibility();
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| 229 | }
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| 230 | }
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| 231 | }
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| 232 |
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| 233 | private bool showVerticalLine = true;
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| 234 | /// <summary>
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| 235 | /// Gets or sets a value indicating whether to show vertical line.
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| 236 | /// </summary>
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| 237 | /// <value><c>true</c> if vertical line is shown; otherwise, <c>false</c>.</value>
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| 238 | public bool ShowVerticalLine
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| 239 | {
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| 240 | get { return showVerticalLine; }
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| 241 | set
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| 242 | {
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| 243 | if (showVerticalLine != value)
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| 244 | {
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| 245 | showVerticalLine = value;
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| 246 | UpdateVisibility();
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| 247 | }
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| 248 | }
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| 249 | }
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| 250 |
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| 251 | private void UpdateUIRepresentation()
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| 252 | {
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| 253 | Point position = followMouse ? Mouse.GetPosition(this) : Position;
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| 254 | UpdateUIRepresentation(position);
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| 255 | }
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| 256 |
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| 257 | private void UpdateUIRepresentation(Point mousePos)
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| 258 | {
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| 259 | if (Plotter2D == null) return;
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| 260 |
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| 261 | var transform = Plotter2D.Viewport.Transform;
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| 262 | DataRect visible = Plotter2D.Viewport.Visible;
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| 263 | Rect output = Plotter2D.Viewport.Output;
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| 264 |
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| 265 | if (!output.Contains(mousePos))
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| 266 | {
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| 267 | if (autoHide)
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| 268 | {
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| 269 | horizGrid.Visibility = horizLine.Visibility = vertGrid.Visibility = vertLine.Visibility = Visibility.Hidden;
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| 270 | }
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| 271 | return;
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| 272 | }
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| 273 |
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| 274 | if (!followMouse)
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| 275 | {
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| 276 | mousePos = mousePos.DataToScreen(transform);
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| 277 | }
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| 278 |
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| 279 | horizLine.X1 = output.Left;
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| 280 | horizLine.X2 = output.Right;
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| 281 | horizLine.Y1 = mousePos.Y;
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| 282 | horizLine.Y2 = mousePos.Y;
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| 283 |
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| 284 | vertLine.X1 = mousePos.X;
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| 285 | vertLine.X2 = mousePos.X;
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| 286 | vertLine.Y1 = output.Top;
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| 287 | vertLine.Y2 = output.Bottom;
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| 288 |
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| 289 | if (UseDashOffset)
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| 290 | {
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| 291 | horizLine.StrokeDashOffset = (output.Right - mousePos.X) / 2;
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| 292 | vertLine.StrokeDashOffset = (output.Bottom - mousePos.Y) / 2;
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| 293 | }
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| 294 |
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| 295 | Point mousePosInData = mousePos.ScreenToData(transform);
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| 296 |
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| 297 | string text = null;
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| 298 |
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| 299 | if (showVerticalLine)
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| 300 | {
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| 301 | double xValue = mousePosInData.X;
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| 302 | if (xTextMapping != null)
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| 303 | text = xTextMapping(xValue);
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| 304 |
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| 305 | // doesnot have xTextMapping or it returned null
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| 306 | if (text == null)
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| 307 | text = GetRoundedValue(visible.XMin, visible.XMax, xValue);
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| 308 |
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| 309 | if (!String.IsNullOrEmpty(customXFormat))
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| 310 | text = String.Format(customXFormat, text);
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| 311 | horizTextBlock.Text = text;
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| 312 | }
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| 313 |
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| 314 | double width = horizGrid.ActualWidth;
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| 315 | double x = mousePos.X + blockShift.X;
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| 316 | if (x + width > output.Right)
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| 317 | {
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| 318 | x = mousePos.X - blockShift.X - width;
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| 319 | }
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| 320 | Canvas.SetLeft(horizGrid, x);
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| 321 |
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| 322 | if (showHorizontalLine)
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| 323 | {
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| 324 | double yValue = mousePosInData.Y;
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| 325 | text = null;
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| 326 | if (yTextMapping != null)
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| 327 | text = yTextMapping(yValue);
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| 328 |
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| 329 | if (text == null)
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| 330 | text = GetRoundedValue(visible.YMin, visible.YMax, yValue);
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| 331 |
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| 332 | if (!String.IsNullOrEmpty(customYFormat))
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| 333 | text = String.Format(customYFormat, text);
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| 334 | vertTextBlock.Text = text;
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| 335 | }
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| 336 |
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| 337 | // by default vertGrid is positioned on the top of line.
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| 338 | double height = vertGrid.ActualHeight;
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| 339 | double y = mousePos.Y - blockShift.Y - height;
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| 340 | if (y < output.Top)
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| 341 | {
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| 342 | y = mousePos.Y + blockShift.Y;
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| 343 | }
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| 344 | Canvas.SetTop(vertGrid, y);
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| 345 |
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| 346 | if (followMouse)
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| 347 | Position = mousePos;
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| 348 | }
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| 349 |
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| 350 | /// <summary>
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| 351 | /// Gets or sets the mouse position in screen coordinates.
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| 352 | /// </summary>
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| 353 | /// <value>The position.</value>
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| 354 | public Point Position
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| 355 | {
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| 356 | get { return (Point)GetValue(PositionProperty); }
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| 357 | set { SetValue(PositionProperty, value); }
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| 358 | }
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| 359 |
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| 360 | /// <summary>
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| 361 | /// Identifies Position dependency property.
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| 362 | /// </summary>
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| 363 | public static readonly DependencyProperty PositionProperty = DependencyProperty.Register(
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| 364 | "Position",
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| 365 | typeof(Point),
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| 366 | typeof(CursorCoordinateGraph),
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| 367 | new UIPropertyMetadata(new Point(), OnPositionChanged));
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| 368 |
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| 369 | private static void OnPositionChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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| 370 | {
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| 371 | CursorCoordinateGraph graph = (CursorCoordinateGraph)d;
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| 372 | graph.UpdateUIRepresentation((Point)e.NewValue);
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| 373 | }
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| 374 |
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| 375 | private string GetRoundedValue(double min, double max, double value)
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| 376 | {
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| 377 | double roundedValue = value;
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| 378 | var log = RoundingHelper.GetDifferenceLog(min, max);
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| 379 | string format = "G3";
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| 380 | double diff = Math.Abs(max - min);
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| 381 | if (1E3 < diff && diff < 1E6)
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| 382 | {
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| 383 | format = "F0";
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| 384 | }
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| 385 | if (log < 0)
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| 386 | format = "G" + (-log + 2).ToString();
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| 387 |
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| 388 | return roundedValue.ToString(format);
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| 389 | }
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| 390 |
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| 391 | #region UseDashOffset property
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| 392 |
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| 393 | public bool UseDashOffset
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| 394 | {
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| 395 | get { return (bool)GetValue(UseDashOffsetProperty); }
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| 396 | set { SetValue(UseDashOffsetProperty, value); }
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| 397 | }
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| 398 |
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| 399 | public static readonly DependencyProperty UseDashOffsetProperty = DependencyProperty.Register(
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| 400 | "UseDashOffset",
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| 401 | typeof(bool),
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| 402 | typeof(CursorCoordinateGraph),
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| 403 | new FrameworkPropertyMetadata(true, UpdateUIRepresentation));
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| 404 |
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| 405 | private static void UpdateUIRepresentation(DependencyObject d, DependencyPropertyChangedEventArgs e)
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| 406 | {
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| 407 | CursorCoordinateGraph graph = (CursorCoordinateGraph)d;
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| 408 | if ((bool)e.NewValue)
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| 409 | {
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| 410 | graph.UpdateUIRepresentation();
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| 411 | }
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| 412 | else
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| 413 | {
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| 414 | graph.vertLine.ClearValue(Line.StrokeDashOffsetProperty);
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| 415 | graph.horizLine.ClearValue(Line.StrokeDashOffsetProperty);
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| 416 | }
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| 417 | }
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| 418 |
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| 419 | #endregion
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| 420 |
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| 421 | #region LineStroke property
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| 422 |
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| 423 | public Brush LineStroke
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| 424 | {
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| 425 | get { return (Brush)GetValue(LineStrokeProperty); }
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| 426 | set { SetValue(LineStrokeProperty, value); }
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| 427 | }
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| 428 |
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| 429 | public static readonly DependencyProperty LineStrokeProperty = DependencyProperty.Register(
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| 430 | "LineStroke",
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| 431 | typeof(Brush),
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| 432 | typeof(CursorCoordinateGraph),
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| 433 | new PropertyMetadata(new SolidColorBrush(Color.FromArgb(170, 86, 86, 86))));
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| 434 |
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| 435 | #endregion
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| 436 |
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| 437 | #region LineStrokeThickness property
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| 438 |
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| 439 | public double LineStrokeThickness
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| 440 | {
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| 441 | get { return (double)GetValue(LineStrokeThicknessProperty); }
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| 442 | set { SetValue(LineStrokeThicknessProperty, value); }
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| 443 | }
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| 444 |
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| 445 | public static readonly DependencyProperty LineStrokeThicknessProperty = DependencyProperty.Register(
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| 446 | "LineStrokeThickness",
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| 447 | typeof(double),
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| 448 | typeof(CursorCoordinateGraph),
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| 449 | new PropertyMetadata(2.0));
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| 450 |
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| 451 | #endregion
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| 452 |
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| 453 | #region LineStrokeDashArray property
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| 454 |
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| 455 | [SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
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| 456 | public DoubleCollection LineStrokeDashArray
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| 457 | {
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| 458 | get { return (DoubleCollection)GetValue(LineStrokeDashArrayProperty); }
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| 459 | set { SetValue(LineStrokeDashArrayProperty, value); }
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| 460 | }
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| 461 |
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| 462 | public static readonly DependencyProperty LineStrokeDashArrayProperty = DependencyProperty.Register(
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| 463 | "LineStrokeDashArray",
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| 464 | typeof(DoubleCollection),
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| 465 | typeof(CursorCoordinateGraph),
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| 466 | new FrameworkPropertyMetadata(DoubleCollectionHelper.Create(3, 3)));
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| 467 |
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| 468 | #endregion
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| 469 | }
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| 470 | }
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