1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.Drawing;
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25 | using System.Drawing.Drawing2D;
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26 | using System.Windows.Forms;
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27 |
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28 | namespace HeuristicLab.Visualization {
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29 | public partial class ChartControl : UserControl {
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30 | private Bitmap bitmap;
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31 | private bool renderingRequired;
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32 | private Point buttonDownPoint;
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33 | private Point mousePosition;
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34 | private int mouseClickCount;
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35 |
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36 | private Chart myChart;
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37 | public Chart Chart {
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38 | get { return myChart; }
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39 | set {
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40 | if (myChart != null) myChart.Update -= new EventHandler(myChart_Update);
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41 | myChart = value;
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42 | if (myChart != null) {
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43 | myChart.Update += new EventHandler(myChart_Update);
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44 | SetMode(Chart.Mode);
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45 | }
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46 | GenerateImage();
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47 | }
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48 | }
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49 | private bool myScaleOnResize;
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50 | public bool ScaleOnResize {
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51 | get { return myScaleOnResize; }
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52 | set { myScaleOnResize = value; }
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53 | }
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54 |
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55 | public ChartControl() {
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56 | InitializeComponent();
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57 | myScaleOnResize = true;
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58 | GenerateImage();
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59 | }
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60 |
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61 | private void myChart_Update(object sender, EventArgs e) {
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62 | GenerateImage();
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63 | }
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64 | private void pictureBox_SizeChanged(object sender, EventArgs e) {
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65 | if (ScaleOnResize) {
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66 | if ((pictureBox.Width > 0) && (pictureBox.Height > 0) && (Chart != null)) {
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67 | PointD point = Chart.TransformPixelToWorld(new Point(pictureBox.Width, Chart.SizeInPixels.Height - pictureBox.Height));
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68 | Chart.SetPosition(Chart.LowerLeft, point);
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69 | }
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70 | }
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71 | GenerateImage();
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72 | }
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73 | private void pictureBox_VisibleChanged(object sender, EventArgs e) {
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74 | if (pictureBox.Visible && renderingRequired) {
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75 | GenerateImage();
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76 | }
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77 | }
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78 |
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79 | private void pictureBox_MouseDown(object sender, MouseEventArgs e) {
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80 | buttonDownPoint = e.Location;
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81 | mouseClickCount = e.Clicks;
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82 | }
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83 | protected virtual void pictureBox_MouseUp(object sender, MouseEventArgs e) {
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84 | if (e.Button == MouseButtons.Left) {
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85 | if (Chart.Mode == ChartMode.Zoom) {
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86 | pictureBox.Refresh();
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87 | // some code to preserve the aspect ratio when zooming
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88 | // +---------------------+ (Width,Height)
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89 | // | (x1,y1) |
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90 | // | +-------+ |
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91 | // | | | |
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92 | // | | | |
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93 | // | +-------+ |
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94 | // | (x2,y2) |
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95 | // (0,0) +---------------------+
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96 | //
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97 | double aspectRatio = (double)Width / Height;
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98 | double x1 = Math.Min(e.X, buttonDownPoint.X);
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99 | double y1 = Math.Max(e.Y, buttonDownPoint.Y);
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100 | double x2 = Math.Max(e.X, buttonDownPoint.X);
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101 | double y2 = Math.Min(e.Y, buttonDownPoint.Y);
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102 | // consider the relative ratios between the X and Y dimensions of the selection
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103 | // area and the Width and Height, respectively. The "dominant" dimension is the
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104 | // one with a ratio closer to 1, and it stays fixed while the other is adjusted
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105 | // in order to preserve the aspect ratio
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106 | if ((x2 - x1) / Width > (y1 - y2) / Height) {
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107 | y1 = y2 + (x2 - x1) / aspectRatio;
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108 | } else {
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109 | x2 = aspectRatio * (y1 - y2) + x1;
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110 | }
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111 | var lowerLeft = new Point((int)x1, (int)y1);
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112 | var upperRight = new Point((int)x2, (int)y2);
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113 | if ((lowerLeft.X != upperRight.X) && (lowerLeft.Y != upperRight.Y)) {
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114 | Chart.ZoomIn(lowerLeft, upperRight);
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115 | }
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116 | }
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117 | } else if (e.Button == MouseButtons.Right) {
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118 | propertiesToolStripMenuItem.Enabled = Chart.Group.SelectedPrimitives.Count == 1;
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119 | oneLayerUpToolStripMenuItem.Enabled = Chart.Group.SelectedPrimitives.Count == 1;
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120 | oneLayerDownToolStripMenuItem.Enabled = Chart.Group.SelectedPrimitives.Count == 1;
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121 | intoForegroundToolStripMenuItem.Enabled = Chart.Group.SelectedPrimitives.Count == 1;
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122 | intoBackgroundToolStripMenuItem.Enabled = Chart.Group.SelectedPrimitives.Count == 1;
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123 | } else if (e.Button == MouseButtons.Middle) {
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124 | if (Chart.Mode == ChartMode.Zoom) {
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125 | if (mouseClickCount == 1) Chart.ZoomOut();
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126 | else if (mouseClickCount == 2) Chart.Unzoom();
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127 | }
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128 | }
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129 | if (buttonDownPoint == e.Location) {
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130 | if (mouseClickCount == 1)
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131 | Chart.MouseClick(e.Location, e.Button);
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132 | else if (mouseClickCount == 2)
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133 | Chart.MouseDoubleClick(e.Location, e.Button);
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134 | }
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135 | }
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136 |
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137 | private void pictureBox_MouseMove(object sender, MouseEventArgs e) {
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138 | var text = Chart.GetToolTipText(e.Location);
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139 | if (toolTip.GetToolTip(pictureBox) != text)
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140 | toolTip.SetToolTip(pictureBox, text);
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141 | Cursor cursor = Chart.GetCursor(e.Location);
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142 | if (cursor != null) pictureBox.Cursor = cursor;
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143 | else pictureBox.Cursor = Cursors.Default;
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144 |
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145 | if (e.Button != MouseButtons.None) {
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146 | if ((Chart.Mode == ChartMode.Zoom) && (e.Button == MouseButtons.Left)) {
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147 | pictureBox.Refresh();
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148 | Graphics graphics = pictureBox.CreateGraphics();
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149 | Pen pen = new Pen(Color.Gray);
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150 | pen.DashStyle = DashStyle.Dash;
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151 | graphics.DrawRectangle(pen,
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152 | Math.Min(e.X, buttonDownPoint.X),
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153 | Math.Min(e.Y, buttonDownPoint.Y),
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154 | Math.Abs(e.X - buttonDownPoint.X),
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155 | Math.Abs(e.Y - buttonDownPoint.Y));
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156 | pen.Dispose();
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157 | graphics.Dispose();
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158 | }
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159 | Chart.MouseDrag(mousePosition, e.Location, e.Button);
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160 | } else {
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161 | Chart.MouseMove(mousePosition, e.Location);
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162 | }
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163 | mousePosition = e.Location;
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164 | }
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165 |
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166 | private void ChartControl_KeyDown(object sender, KeyEventArgs e) {
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167 | if (Chart.Mode == ChartMode.Select) {
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168 | if (e.KeyCode == Keys.Delete) {
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169 | IList<IPrimitive> selected = Chart.Group.SelectedPrimitives;
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170 | Chart.UpdateEnabled = false;
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171 | foreach (IPrimitive primitive in selected)
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172 | Chart.Group.Remove(primitive);
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173 | Chart.UpdateEnabled = true;
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174 | Chart.EnforceUpdate();
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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 void moveToolStripMenuItem_Click(object sender, EventArgs e) {
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180 | SetMode(ChartMode.Move);
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181 | }
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182 | private void zoomToolStripMenuItem_Click(object sender, EventArgs e) {
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183 | SetMode(ChartMode.Zoom);
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184 | }
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185 | private void selectToolStripMenuItem_Click(object sender, EventArgs e) {
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186 | SetMode(ChartMode.Select);
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187 | }
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188 | private void oneLayerUpToolStripMenuItem_Click(object sender, EventArgs e) {
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189 | if (Chart.Group.SelectedPrimitives.Count == 1) {
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190 | Chart.Group.SelectedPrimitives[0].OneLayerUp();
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191 | }
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192 | }
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193 | private void oneLayerDownToolStripMenuItem_Click(object sender, EventArgs e) {
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194 | if (Chart.Group.SelectedPrimitives.Count == 1) {
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195 | Chart.Group.SelectedPrimitives[0].OneLayerDown();
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196 | }
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197 | }
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198 | private void intoForegroundToolStripMenuItem_Click(object sender, EventArgs e) {
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199 | if (Chart.Group.SelectedPrimitives.Count == 1) {
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200 | Chart.Group.SelectedPrimitives[0].IntoForeground();
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201 | }
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202 | }
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203 | private void intoBackgroundToolStripMenuItem_Click(object sender, EventArgs e) {
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204 | if (Chart.Group.SelectedPrimitives.Count == 1) {
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205 | Chart.Group.SelectedPrimitives[0].IntoBackground();
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206 | }
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207 | }
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208 | private void propertiesToolStripMenuItem_Click(object sender, EventArgs e) {
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209 | if (Chart.Group.SelectedPrimitives.Count == 1) {
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210 | PropertiesDialog dialog = new PropertiesDialog(Chart.Group.SelectedPrimitives[0]);
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211 | dialog.ShowDialog(this);
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212 | dialog.Dispose();
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213 | }
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214 | }
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215 |
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216 | private void GenerateImage() {
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217 | if (!Visible) {
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218 | renderingRequired = true;
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219 | } else {
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220 | if ((pictureBox.Width == 0) || (pictureBox.Height == 0)) {
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221 | bitmap = null;
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222 | } else {
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223 | bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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224 | if (Chart != null) {
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225 | Graphics graphics = Graphics.FromImage(bitmap);
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226 | graphics.SetClip(new System.Drawing.Rectangle(0, 0, pictureBox.Width, pictureBox.Height));
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227 | Chart.Render(graphics, pictureBox.Width, pictureBox.Height);
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228 | graphics.Dispose();
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229 | }
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230 | }
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231 | if (pictureBox.Image != null) pictureBox.Image.Dispose();
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232 | pictureBox.Image = bitmap;
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233 | renderingRequired = false;
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234 | }
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235 | }
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236 |
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237 | private void SetMode(ChartMode mode) {
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238 | moveToolStripMenuItem.Checked = false;
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239 | zoomToolStripMenuItem.Checked = false;
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240 | selectToolStripMenuItem.Checked = false;
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241 | if (mode == ChartMode.Move) moveToolStripMenuItem.Checked = true;
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242 | else if (mode == ChartMode.Zoom) zoomToolStripMenuItem.Checked = true;
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243 | else if (mode == ChartMode.Select) selectToolStripMenuItem.Checked = true;
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244 | Chart.Mode = mode;
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245 | }
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246 | }
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247 | }
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