1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.Drawing;
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4 | using System.Windows.Forms;
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5 | using HeuristicLab.Core;
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6 | using HeuristicLab.Visualization.Legend;
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7 | using HeuristicLab.Visualization.Options;
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8 |
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9 | namespace HeuristicLab.Visualization {
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10 | public partial class LineChart : ViewBase {
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11 | private readonly IChartDataRowsModel model;
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12 | private readonly Canvas canvas;
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13 |
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14 | private readonly TextShape titleShape = new TextShape("Title");
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15 | private readonly LegendShape legendShape = new LegendShape();
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16 | private readonly XAxis xAxis = new XAxis();
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17 | private readonly List<RowEntry> rowEntries = new List<RowEntry>();
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18 |
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19 | private readonly Dictionary<IDataRow, RowEntry> rowToRowEntry = new Dictionary<IDataRow, RowEntry>();
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20 |
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21 | private readonly ViewSettings viewSettings;
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22 |
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23 | // private readonly Stack<RectangleD> clippingAreaHistory = new Stack<RectangleD>();
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24 | private readonly WorldShape userInteractionShape = new WorldShape();
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25 | private readonly RectangleShape rectangleShape = new RectangleShape(0, 0, 0, 0, Color.FromArgb(50, 0, 0, 255));
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26 | private IMouseEventListener mouseEventListener;
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27 |
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28 | private const int YAxisWidth = 100;
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29 | private const int XAxisHeight = 20;
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30 |
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31 | private bool zoomToFullView;
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32 |
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33 |
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34 | /// <summary>
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35 | /// This constructor shouldn't be called. Only required for the designer.
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36 | /// </summary>
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37 | public LineChart() {
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38 | InitializeComponent();
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39 | }
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40 |
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41 | /// <summary>
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42 | /// Initializes the chart.
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43 | /// </summary>
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44 | /// <param name="model">Referenz to the model, for data</param>
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45 | public LineChart(IChartDataRowsModel model) : this() {
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46 | if (model == null) {
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47 | throw new NullReferenceException("Model cannot be null.");
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48 | }
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49 |
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50 | canvas = canvasUI.Canvas;
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51 |
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52 | this.model = model;
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53 | viewSettings = model.ViewSettings;
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54 | viewSettings.OnUpdateSettings += UpdateViewSettings;
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55 |
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56 | Item = model;
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57 |
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58 | UpdateLayout();
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59 | canvasUI.Resize += delegate { UpdateLayout(); };
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60 |
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61 | ZoomToFullView();
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62 | }
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63 |
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64 | private void UpdateViewSettings() {
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65 | titleShape.Font = viewSettings.TitleFont;
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66 | titleShape.Color = viewSettings.TitleColor;
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67 |
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68 | legendShape.Font = viewSettings.LegendFont;
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69 | legendShape.Color = viewSettings.LegendColor;
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70 |
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71 | xAxis.Font = viewSettings.XAxisFont;
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72 | xAxis.Color = viewSettings.XAxisColor;
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73 |
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74 | SetLegendPosition();
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75 |
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76 | canvasUI.Invalidate();
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77 | }
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78 |
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79 | /// <summary>
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80 | /// Layout management - arranges the inner shapes.
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81 | /// </summary>
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82 | private void UpdateLayout() {
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83 | canvas.ClearShapes();
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84 |
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85 | foreach (RowEntry rowEntry in rowEntries) {
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86 | canvas.AddShape(rowEntry.Grid);
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87 | }
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88 |
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89 | foreach (RowEntry rowEntry in rowEntries) {
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90 | canvas.AddShape(rowEntry.LinesShape);
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91 | }
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92 |
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93 | canvas.AddShape(xAxis);
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94 |
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95 | int yAxesWidth = 0;
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96 |
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97 | foreach (RowEntry rowEntry in rowEntries) {
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98 | if (rowEntry.DataRow.ShowYAxis) {
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99 | canvas.AddShape(rowEntry.YAxis);
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100 | yAxesWidth += YAxisWidth;
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101 | }
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102 | }
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103 |
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104 | canvas.AddShape(titleShape);
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105 | canvas.AddShape(legendShape);
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106 |
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107 | canvas.AddShape(userInteractionShape);
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108 |
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109 | titleShape.X = 10;
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110 | titleShape.Y = canvasUI.Height - 10;
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111 |
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112 | RectangleD linesAreaBoundingBox = new RectangleD(yAxesWidth,
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113 | XAxisHeight,
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114 | canvasUI.Width,
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115 | canvasUI.Height);
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116 |
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117 | foreach (RowEntry rowEntry in rowEntries) {
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118 | rowEntry.LinesShape.BoundingBox = linesAreaBoundingBox;
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119 | rowEntry.Grid.BoundingBox = linesAreaBoundingBox;
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120 | }
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121 |
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122 | int yAxisLeft = 0;
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123 | foreach (RowEntry rowEntry in rowEntries) {
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124 | if (rowEntry.DataRow.ShowYAxis) {
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125 | rowEntry.YAxis.BoundingBox = new RectangleD(yAxisLeft,
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126 | linesAreaBoundingBox.Y1,
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127 | yAxisLeft + YAxisWidth,
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128 | linesAreaBoundingBox.Y2);
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129 | yAxisLeft += YAxisWidth;
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130 | }
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131 | }
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132 |
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133 | userInteractionShape.BoundingBox = linesAreaBoundingBox;
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134 | userInteractionShape.ClippingArea = new RectangleD(0, 0, userInteractionShape.BoundingBox.Width, userInteractionShape.BoundingBox.Height);
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135 |
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136 | xAxis.BoundingBox = new RectangleD(linesAreaBoundingBox.X1,
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137 | 0,
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138 | linesAreaBoundingBox.X2,
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139 | linesAreaBoundingBox.Y1);
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140 |
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141 | SetLegendPosition();
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142 | }
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143 |
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144 | private void SetLegendPosition() {
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145 | switch (viewSettings.LegendPosition) {
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146 | case LegendPosition.Bottom:
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147 | setLegendBottom();
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148 | break;
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149 |
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150 | case LegendPosition.Top:
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151 | setLegendTop();
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152 | break;
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153 |
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154 | case LegendPosition.Left:
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155 | setLegendLeft();
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156 | break;
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157 |
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158 | case LegendPosition.Right:
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159 | setLegendRight();
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160 | break;
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161 | }
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162 | }
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163 |
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164 | public void setLegendRight() {
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165 | // legend right
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166 | legendShape.BoundingBox = new RectangleD(canvasUI.Width - 110, 10, canvasUI.Width, canvasUI.Height - 50);
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167 | legendShape.ClippingArea = new RectangleD(0, 0, legendShape.BoundingBox.Width, legendShape.BoundingBox.Height);
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168 | legendShape.Row = false;
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169 | legendShape.CreateLegend();
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170 | }
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171 |
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172 | public void setLegendLeft() {
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173 | // legend left
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174 | legendShape.BoundingBox = new RectangleD(10, 10, 110, canvasUI.Height - 50);
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175 | legendShape.ClippingArea = new RectangleD(0, 0, legendShape.BoundingBox.Width, legendShape.BoundingBox.Height);
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176 | legendShape.Row = false;
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177 | legendShape.CreateLegend();
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178 |
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179 | canvasUI.Invalidate();
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180 | }
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181 |
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182 | public void setLegendTop() {
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183 | // legend top
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184 | legendShape.BoundingBox = new RectangleD(100, canvasUI.Height - canvasUI.Height, canvasUI.Width, canvasUI.Height - 10);
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185 | legendShape.ClippingArea = new RectangleD(0, 0, legendShape.BoundingBox.Width, legendShape.BoundingBox.Height);
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186 | legendShape.Row = true;
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187 | legendShape.Top = true;
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188 | legendShape.CreateLegend();
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189 | }
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190 |
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191 | public void setLegendBottom() {
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192 | // legend bottom
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193 | legendShape.BoundingBox = new RectangleD(100, 10, canvasUI.Width, 200);
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194 | legendShape.ClippingArea = new RectangleD(0, 0, legendShape.BoundingBox.Width, legendShape.BoundingBox.Height);
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195 | legendShape.Row = true;
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196 | legendShape.Top = false;
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197 | legendShape.CreateLegend();
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198 | }
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199 |
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200 | private void optionsToolStripMenuItem_Click(object sender, EventArgs e) {
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201 | OptionsDialog optionsdlg = new OptionsDialog(model);
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202 | //var optionsdlg = new OptionsDialog(model, this);
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203 | optionsdlg.ShowDialog(this);
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204 | Invalidate();
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205 | }
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206 |
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207 | public void OnDataRowChanged(IDataRow row) {
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208 | RowEntry rowEntry = rowToRowEntry[row];
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209 |
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210 | rowEntry.LinesShape.UpdateStyle(row);
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211 |
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212 | UpdateLayout();
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213 |
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214 | canvasUI.Invalidate();
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215 | }
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216 |
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217 | #region Add-/RemoveItemEvents
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218 |
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219 | protected override void AddItemEvents() {
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220 | base.AddItemEvents();
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221 |
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222 | model.DataRowAdded += OnDataRowAdded;
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223 | model.DataRowRemoved += OnDataRowRemoved;
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224 | model.ModelChanged += OnModelChanged;
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225 |
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226 | foreach (IDataRow row in model.Rows) {
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227 | OnDataRowAdded(row);
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228 | }
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229 | }
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230 |
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231 | protected override void RemoveItemEvents() {
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232 | base.RemoveItemEvents();
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233 |
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234 | model.DataRowAdded -= OnDataRowAdded;
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235 | model.DataRowRemoved -= OnDataRowRemoved;
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236 | model.ModelChanged -= OnModelChanged;
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237 | }
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238 |
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239 | private void OnDataRowAdded(IDataRow row) {
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240 | row.ValueChanged += OnRowValueChanged;
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241 | row.ValuesChanged += OnRowValuesChanged;
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242 | row.DataRowChanged += OnDataRowChanged;
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243 |
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244 | legendShape.AddLegendItem(new LegendItem(row.Label, row.Color, row.Thickness));
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245 | legendShape.CreateLegend();
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246 |
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247 | InitLineShapes(row);
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248 |
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249 | UpdateLayout();
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250 | }
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251 |
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252 | private void OnDataRowRemoved(IDataRow row) {
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253 | row.ValueChanged -= OnRowValueChanged;
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254 | row.ValuesChanged -= OnRowValuesChanged;
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255 | row.DataRowChanged -= OnDataRowChanged;
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256 |
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257 | rowToRowEntry.Remove(row);
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258 | rowEntries.RemoveAll(delegate(RowEntry rowEntry) { return rowEntry.DataRow == row; });
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259 |
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260 | UpdateLayout();
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261 | }
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262 |
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263 | #endregion
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264 |
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265 | public void ZoomToFullView() {
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266 | SetClipX(-0.1, model.MaxDataRowValues - 0.9);
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267 |
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268 | foreach (RowEntry rowEntry in rowEntries) {
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269 | IDataRow row = rowEntry.DataRow;
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270 |
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271 | SetClipY(rowEntry,
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272 | row.MinValue - ((row.MaxValue - row.MinValue)*0.05),
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273 | row.MaxValue + ((row.MaxValue - row.MinValue)*0.05));
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274 | }
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275 |
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276 | zoomToFullView = true;
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277 |
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278 | canvasUI.Invalidate();
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279 | }
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280 |
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281 | private void SetClipX(double x1, double x2) {
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282 | xAxis.ClippingArea = new RectangleD(x1,
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283 | 0,
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284 | x2,
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285 | XAxisHeight);
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286 |
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287 | foreach (RowEntry rowEntry in rowEntries) {
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288 | rowEntry.LinesShape.ClippingArea = new RectangleD(x1,
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289 | rowEntry.LinesShape.ClippingArea.Y1,
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290 | x2,
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291 | rowEntry.LinesShape.ClippingArea.Y2);
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292 | rowEntry.Grid.ClippingArea = new RectangleD(x1,
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293 | rowEntry.Grid.ClippingArea.Y1,
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294 | x2,
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295 | rowEntry.Grid.ClippingArea.Y2);
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296 | rowEntry.YAxis.ClippingArea = new RectangleD(0,
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297 | rowEntry.YAxis.ClippingArea.Y1,
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298 | YAxisWidth,
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299 | rowEntry.YAxis.ClippingArea.Y2);
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300 | }
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301 | }
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302 |
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303 | private static void SetClipY(RowEntry rowEntry, double y1, double y2) {
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304 | rowEntry.LinesShape.ClippingArea = new RectangleD(rowEntry.LinesShape.ClippingArea.X1,
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305 | y1,
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306 | rowEntry.LinesShape.ClippingArea.X2,
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307 | y2);
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308 | rowEntry.Grid.ClippingArea = new RectangleD(rowEntry.Grid.ClippingArea.X1,
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309 | y1,
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310 | rowEntry.Grid.ClippingArea.X2,
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311 | y2);
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312 | rowEntry.YAxis.ClippingArea = new RectangleD(rowEntry.YAxis.ClippingArea.X1,
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313 | y1,
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314 | rowEntry.YAxis.ClippingArea.X2,
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315 | y2);
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316 | }
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317 |
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318 | private void InitLineShapes(IDataRow row) {
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319 | RowEntry rowEntry = new RowEntry(row);
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320 | rowEntries.Add(rowEntry);
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321 | rowToRowEntry[row] = rowEntry;
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322 |
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323 | if ((row.LineType == DataRowType.SingleValue)) {
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324 | if (row.Count > 0) {
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325 | LineShape lineShape = new HorizontalLineShape(0, row[0], double.MaxValue, row[0], row.Color, row.Thickness,
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326 | row.Style);
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327 | rowEntry.LinesShape.AddShape(lineShape);
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328 | }
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329 | } else {
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330 | for (int i = 1; i < row.Count; i++) {
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331 | LineShape lineShape = new LineShape(i - 1, row[i - 1], i, row[i], row.Color, row.Thickness, row.Style);
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332 | rowEntry.LinesShape.AddShape(lineShape);
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333 | }
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334 | }
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335 |
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336 | ZoomToFullView();
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337 | }
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338 |
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339 | private void OnRowValueChanged(IDataRow row, double value, int index, Action action) {
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340 | RowEntry rowEntry = rowToRowEntry[row];
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341 |
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342 | if (row.LineType == DataRowType.SingleValue) {
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343 | if (action == Action.Added) {
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344 | LineShape lineShape = new HorizontalLineShape(0, row[0], double.MaxValue, row[0], row.Color, row.Thickness,
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345 | row.Style);
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346 | rowEntry.LinesShape.AddShape(lineShape);
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347 | } else {
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348 | LineShape lineShape = rowEntry.LinesShape.GetShape(0);
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349 | lineShape.Y1 = value;
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350 | lineShape.Y2 = value;
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351 | }
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352 | } else {
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353 | if (index > rowEntry.LinesShape.Count + 1) {
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354 | throw new NotImplementedException();
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355 | }
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356 |
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357 | // new value was added
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358 | if (index > 0 && index == rowEntry.LinesShape.Count + 1) {
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359 | LineShape lineShape = new LineShape(index - 1, row[index - 1], index, row[index], row.Color, row.Thickness, row.Style);
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360 | rowEntry.LinesShape.AddShape(lineShape);
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361 | }
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362 |
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363 | // not the first value
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364 | if (index > 0) {
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365 | rowEntry.LinesShape.GetShape(index - 1).Y2 = value;
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366 | }
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367 |
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368 | // not the last value
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369 | if (index > 0 && index < row.Count - 1) {
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370 | rowEntry.LinesShape.GetShape(index).Y1 = value;
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371 | }
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372 | }
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373 |
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374 | ZoomToFullView();
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375 | }
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376 |
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377 | private void OnRowValuesChanged(IDataRow row, double[] values, int index, Action action) {
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378 | foreach (double value in values) {
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379 | OnRowValueChanged(row, value, index++, action);
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380 | }
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381 | }
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382 |
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383 | private void OnModelChanged() {
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384 | titleShape.Text = model.Title;
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385 |
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386 | canvasUI.Invalidate();
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387 | }
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388 |
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389 | #region Begin-/EndUpdate
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390 |
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391 | private int beginUpdateCount;
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392 |
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393 | public void BeginUpdate() {
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394 | beginUpdateCount++;
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395 | }
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396 |
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397 | public void EndUpdate() {
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398 | if (beginUpdateCount == 0) {
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399 | throw new InvalidOperationException("Too many EndUpdates.");
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400 | }
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401 |
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402 | beginUpdateCount--;
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403 |
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404 | if (beginUpdateCount == 0) {
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405 | canvasUI.Invalidate();
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406 | }
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407 | }
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408 |
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409 | #endregion
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410 |
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411 | #region Zooming / Panning
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412 |
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413 | private void Pan(Point startPoint, Point endPoint) {
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414 | zoomToFullView = false;
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415 |
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416 | foreach (RowEntry rowEntry in rowEntries) {
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417 | RectangleD clippingArea = CalcPanClippingArea(startPoint, endPoint, rowEntry.LinesShape);
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418 |
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419 | SetClipX(clippingArea.X1, clippingArea.X1);
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420 | SetClipY(rowEntry, clippingArea.Y1, clippingArea.Y2);
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421 | }
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422 |
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423 | canvasUI.Invalidate();
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424 | }
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425 |
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426 | private void PanEnd(Point startPoint, Point endPoint) {
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427 | zoomToFullView = false;
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428 |
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429 | foreach (RowEntry rowEntry in rowEntries) {
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430 | RectangleD clippingArea = CalcPanClippingArea(startPoint, endPoint, rowEntry.LinesShape);
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431 |
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432 | SetClipX(clippingArea.X1, clippingArea.X1);
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433 | SetClipY(rowEntry, clippingArea.Y1, clippingArea.Y2);
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434 | }
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435 |
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436 | canvasUI.Invalidate();
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437 | }
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438 |
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439 | private static RectangleD CalcPanClippingArea(Point startPoint, Point endPoint, LinesShape linesShape) {
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440 | return Translate.ClippingArea(startPoint, endPoint, linesShape.ClippingArea, linesShape.Viewport);
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441 | }
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442 |
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443 | private void SetClippingArea(Rectangle rectangle) {
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444 | foreach (RowEntry rowEntry in rowEntries) {
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445 | RectangleD clippingArea = Transform.ToWorld(rectangle, rowEntry.LinesShape.Viewport, rowEntry.LinesShape.ClippingArea);
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446 |
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447 | SetClipX(clippingArea.X1, clippingArea.X1);
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448 | SetClipY(rowEntry, clippingArea.Y1, clippingArea.Y2);
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449 | }
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450 |
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451 | userInteractionShape.RemoveShape(rectangleShape);
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452 | canvasUI.Invalidate();
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453 | }
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454 |
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455 | private void DrawRectangle(Rectangle rectangle) {
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456 | rectangleShape.Rectangle = Transform.ToWorld(rectangle, userInteractionShape.Viewport, userInteractionShape.ClippingArea);
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457 | canvasUI.Invalidate();
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458 | }
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459 |
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460 | private void canvasUI1_KeyDown(object sender, KeyEventArgs e) {
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461 | // if (e.KeyCode == Keys.Back && clippingAreaHistory.Count > 1) {
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462 | // clippingAreaHistory.Pop();
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463 | //
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464 | // RectangleD clippingArea = clippingAreaHistory.Peek();
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465 | //
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466 | // SetLineClippingArea(clippingArea, false);
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467 | // }
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468 | }
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469 |
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470 | private void canvasUI1_MouseDown(object sender, MouseEventArgs e) {
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471 | Focus();
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472 |
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473 | if (e.Button == MouseButtons.Right) {
|
---|
474 | contextMenuStrip1.Show(PointToScreen(e.Location));
|
---|
475 | } else if (e.Button == MouseButtons.Left) {
|
---|
476 | if (ModifierKeys == Keys.None) {
|
---|
477 | PanListener panListener = new PanListener(e.Location);
|
---|
478 | panListener.Pan += Pan;
|
---|
479 | panListener.PanEnd += PanEnd;
|
---|
480 |
|
---|
481 | mouseEventListener = panListener;
|
---|
482 | } else if (ModifierKeys == Keys.Control) {
|
---|
483 | ZoomListener zoomListener = new ZoomListener(e.Location);
|
---|
484 | zoomListener.DrawRectangle += DrawRectangle;
|
---|
485 | zoomListener.SetClippingArea += SetClippingArea;
|
---|
486 |
|
---|
487 | rectangleShape.Rectangle = RectangleD.Empty;
|
---|
488 | userInteractionShape.AddShape(rectangleShape);
|
---|
489 |
|
---|
490 | mouseEventListener = zoomListener;
|
---|
491 | }
|
---|
492 | }
|
---|
493 | }
|
---|
494 |
|
---|
495 | private void canvasUI_MouseMove(object sender, MouseEventArgs e) {
|
---|
496 | if (mouseEventListener != null) {
|
---|
497 | mouseEventListener.MouseMove(sender, e);
|
---|
498 | }
|
---|
499 | }
|
---|
500 |
|
---|
501 | private void canvasUI_MouseUp(object sender, MouseEventArgs e) {
|
---|
502 | if (mouseEventListener != null) {
|
---|
503 | mouseEventListener.MouseUp(sender, e);
|
---|
504 | }
|
---|
505 |
|
---|
506 | mouseEventListener = null;
|
---|
507 | }
|
---|
508 |
|
---|
509 | private void canvasUI1_MouseWheel(object sender, MouseEventArgs e) {
|
---|
510 | if (ModifierKeys == Keys.Control) {
|
---|
511 | double zoomFactor = (e.Delta > 0) ? 0.9 : 1.1;
|
---|
512 |
|
---|
513 | foreach (RowEntry rowEntry in rowEntries) {
|
---|
514 | RectangleD clippingArea = ZoomListener.ZoomClippingArea(rowEntry.LinesShape.ClippingArea, zoomFactor);
|
---|
515 |
|
---|
516 | SetClipX(clippingArea.X1, clippingArea.X1);
|
---|
517 | SetClipY(rowEntry, clippingArea.Y1, clippingArea.Y2);
|
---|
518 | }
|
---|
519 | }
|
---|
520 | }
|
---|
521 |
|
---|
522 | #endregion
|
---|
523 |
|
---|
524 | private class LinesShape : WorldShape {
|
---|
525 | public void UpdateStyle(IDataRow row) {
|
---|
526 | foreach (IShape shape in shapes) {
|
---|
527 | LineShape lineShape = shape as LineShape;
|
---|
528 | if (lineShape != null) {
|
---|
529 | lineShape.LSColor = row.Color;
|
---|
530 | lineShape.LSDrawingStyle = row.Style;
|
---|
531 | lineShape.LSThickness = row.Thickness;
|
---|
532 | }
|
---|
533 | }
|
---|
534 | }
|
---|
535 |
|
---|
536 | public int Count {
|
---|
537 | get { return shapes.Count; }
|
---|
538 | }
|
---|
539 |
|
---|
540 | public LineShape GetShape(int index) {
|
---|
541 | return (LineShape)shapes[index];
|
---|
542 | }
|
---|
543 | }
|
---|
544 |
|
---|
545 | private class RowEntry {
|
---|
546 | private readonly IDataRow dataRow;
|
---|
547 |
|
---|
548 | private readonly Grid grid = new Grid();
|
---|
549 | private readonly YAxis yAxis = new YAxis();
|
---|
550 | private readonly LinesShape linesShape = new LinesShape();
|
---|
551 |
|
---|
552 | public RowEntry(IDataRow dataRow) {
|
---|
553 | this.dataRow = dataRow;
|
---|
554 | }
|
---|
555 |
|
---|
556 | public IDataRow DataRow {
|
---|
557 | get { return dataRow; }
|
---|
558 | }
|
---|
559 |
|
---|
560 | public Grid Grid {
|
---|
561 | get { return grid; }
|
---|
562 | }
|
---|
563 |
|
---|
564 | public YAxis YAxis {
|
---|
565 | get { return yAxis; }
|
---|
566 | }
|
---|
567 |
|
---|
568 | public LinesShape LinesShape {
|
---|
569 | get { return linesShape; }
|
---|
570 | }
|
---|
571 | }
|
---|
572 | }
|
---|
573 | }
|
---|