1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2014 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.IO;
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26 | using System.Linq;
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27 | using System.Windows.Forms;
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28 | using HeuristicLab.Core.Views;
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29 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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30 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Views;
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31 | using HeuristicLab.EvolutionTracking;
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32 | using HeuristicLab.EvolutionTracking.Views;
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33 | using HeuristicLab.MainForm;
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34 |
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35 | using FragmentGraph = HeuristicLab.EvolutionTracking.IGenealogyGraph<HeuristicLab.EvolutionTracking.IFragment<HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.ISymbolicExpressionTreeNode>>;
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36 |
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37 | using FragmentNode = HeuristicLab.EvolutionTracking.GenealogyGraphNode<HeuristicLab.EvolutionTracking.IFragment<HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.ISymbolicExpressionTreeNode>>;
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38 |
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39 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Views {
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40 | [View("SymboldDataAnalysisGenealogyView")]
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41 | [Content(typeof(IGenealogyGraph<ISymbolicExpressionTree>), IsDefaultView = true)]
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42 | public partial class SymboldDataAnalysisGenealogyView : ItemView {
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43 | private readonly ISymbolicExpressionTreeNodeSimilarityComparer comparer;
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44 |
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45 | public SymboldDataAnalysisGenealogyView() {
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46 | InitializeComponent();
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47 |
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48 | comparer = new SymbolicExpressionTreeNodeSimilarityComparer();
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49 | }
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50 |
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51 | public new IGenealogyGraph<ISymbolicExpressionTree> Content {
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52 | get { return (IGenealogyGraph<ISymbolicExpressionTree>)base.Content; }
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53 | set { base.Content = value; }
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54 | }
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55 |
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56 | #region event handlers
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57 |
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58 | protected override void OnContentChanged() {
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59 | base.OnContentChanged();
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60 | if (Content != null) {
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61 | genealogyGraphChart.GenealogyGraph = Content;
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62 | }
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63 | }
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64 |
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65 | #endregion
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66 |
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67 | protected override void RegisterContentEvents() {
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68 | genealogyGraphChart.GenealogyGraphNodeClicked += graphChart_GenealogyGraphNodeClicked;
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69 | symbolicExpressionTreeChart.SymbolicExpressionTreeNodeClicked += treeChart_SymbolicExpressionNodeClicked;
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70 | base.RegisterContentEvents();
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71 | }
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72 |
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73 | protected override void DeregisterContentEvents() {
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74 | base.DeregisterContentEvents();
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75 | genealogyGraphChart.GenealogyGraphNodeClicked -= graphChart_GenealogyGraphNodeClicked;
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76 | symbolicExpressionTreeChart.SymbolicExpressionTreeNodeClicked -= treeChart_SymbolicExpressionNodeClicked;
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77 | }
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78 |
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79 | public void graphChart_GenealogyGraphNodeClicked(object sender, MouseEventArgs args) {
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80 | var visualNode = (VisualGenealogyGraphNode)sender;
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81 | var graphNode = (IGenealogyGraphNode<ISymbolicExpressionTree>)visualNode.Data;
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82 | var tree = graphNode.Content;
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83 | symbolicExpressionTreeChart.Tree = tree;
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84 |
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85 | if (graphNode.InArcs != null) {
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86 | var fragment = (IFragment<ISymbolicExpressionTreeNode>)graphNode.InArcs.Last().Data;
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87 | treeChart_HighlightSubtree(fragment.Root);
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88 | }
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89 | }
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90 |
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91 | public void treeChart_SymbolicExpressionNodeClicked(object sender, MouseEventArgs args) {
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92 | var visualNode = (VisualTreeNode<ISymbolicExpressionTreeNode>)sender;
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93 | var subtree = visualNode.Content;
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94 |
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95 | // highlight the selected subtree inside the displayed tree on the right hand side
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96 | treeChart_ClearColors();
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97 | treeChart_HighlightSubtree(subtree);
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98 |
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99 | bool trace = genealogyGraphChart.TraceFragments; // check whether the mode is 'trace' or 'match'
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100 |
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101 | if (trace) {
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102 | // perform fragment tracing
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103 | var fragmentGraph = TraceSubtree(subtree);
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104 | MainFormManager.MainForm.ShowContent(fragmentGraph);
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105 | // var fragmentGraphView = MainFormManager.MainForm.ShowContent(fragmentGraph);
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106 | // fragmentGraphView.Content = fragmentGraph;
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107 | // fragmentGraphView.Show();
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108 |
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109 | // open a FragmentGraphView displaying this fragmentGraph
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110 | } else {
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111 | // perform matching like it was done before
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112 | // currently there is no possibility to specify the subtree matching criteria
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113 | var trees = Content.Nodes.Select(x => (ISymbolicExpressionTree)x.Content);
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114 | var matchingTrees = trees.Where(x => x.Root.ContainsSubtree(subtree, comparer));
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115 |
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116 | var matchingVertices = matchingTrees.SelectMany(x => Content[x]).Cast<IGenealogyGraphNode<ISymbolicExpressionTree>>();
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117 | graphChart_highlightMatchingVertices(matchingVertices);
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118 | }
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119 | }
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120 |
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121 | private void graphChart_highlightMatchingVertices(IEnumerable<IGenealogyGraphNode> vertices) {
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122 | genealogyGraphChart.Chart.UpdateEnabled = false;
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123 | genealogyGraphChart.ClearPrimitives();
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124 | genealogyGraphChart.HighlightNodes(vertices);
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125 | genealogyGraphChart.Chart.UpdateEnabled = true;
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126 | genealogyGraphChart.Chart.EnforceUpdate();
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127 | }
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128 |
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129 | private void treeChart_ClearColors() {
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130 | foreach (var node in symbolicExpressionTreeChart.Tree.IterateNodesPrefix()) {
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131 | var visualNode = symbolicExpressionTreeChart.GetVisualSymbolicExpressionTreeNode(node);
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132 | if (visualNode != null) {
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133 | visualNode.LineColor = Color.Black;
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134 | visualNode.FillColor = Color.Transparent;
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135 | }
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136 | }
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137 | symbolicExpressionTreeChart.RepaintNodes();
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138 | }
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139 |
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140 | private void treeChart_HighlightSubtree(ISymbolicExpressionTreeNode subtree) {
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141 | foreach (var s in subtree.IterateNodesPrefix()) {
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142 | var visualNode = symbolicExpressionTreeChart.GetVisualSymbolicExpressionTreeNode(s);
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143 | visualNode.LineColor = Color.RoyalBlue;
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144 | visualNode.FillColor = Color.LightBlue;
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145 |
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146 | foreach (var c in s.Subtrees) {
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147 | var visualArc = symbolicExpressionTreeChart.GetVisualSymbolicExpressionTreeNodeConnection(s, c);
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148 | visualArc.LineColor = Color.RoyalBlue;
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149 | }
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150 | }
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151 | symbolicExpressionTreeChart.RepaintNodes();
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152 | }
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153 |
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154 | #region events for configuring the behavior of the genealogy chart (trace/match, simple lineages, etc)
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155 | private void trace_checkBox_CheckedChanged(object sender, System.EventArgs e) {
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156 | genealogyGraphChart.TraceFragments = trace_checkBox.Checked;
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157 | }
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158 |
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159 | private void simpleLineages_checkBox_CheckedChanged(object sender, System.EventArgs e) {
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160 | genealogyGraphChart.SimpleLineages = simpleLineages_checkBox.Checked;
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161 | }
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162 |
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163 | private void lockGraph_checkBox_CheckedChanged(object sender, System.EventArgs e) {
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164 | genealogyGraphChart.LockGenealogy = lockGraph_checkBox.Checked;
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165 | }
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166 | #endregion
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167 |
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168 | #region fragment tracing
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169 | #region helper methods to shorten the code
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170 |
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171 | #endregion
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172 |
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173 | private FragmentGraph TraceSubtree(ISymbolicExpressionTreeNode subtree) {
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174 | var graphNode = (IGenealogyGraphNode<ISymbolicExpressionTree>)genealogyGraphChart.SelectedGraphNode;
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175 | var graph = new GenealogyGraph<IFragment<ISymbolicExpressionTreeNode>>();
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176 | Trace(graphNode, subtree, graph);
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177 | return graph;
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178 | }
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179 |
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180 | private void Trace(IGenealogyGraphNode<ISymbolicExpressionTree> graphNode, ISymbolicExpressionTreeNode subtree, FragmentGraph fragmentGraph, FragmentNode parentNode = null) {
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181 | while (true) {
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182 | if (!graphNode.InArcs.Any()) return;
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183 |
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184 | var parentVertices = graphNode.Parents.ToList();
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185 | // the subtree must belong to the currently displayed tree which in turn must belong to the currently selected graph node
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186 | var tree = graphNode.Content;
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187 | var subtreeIndex = tree.IndexOf(subtree);
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188 | var subtreeLength = subtree.GetLength();
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189 |
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190 | var fragment = (IFragment<ISymbolicExpressionTreeNode>)graphNode.InArcs.Last().Data;
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191 | if (fragment == null) return;
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192 | var fragmentLength = fragment.Root.GetLength();
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193 |
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194 | FragmentNode node = new FragmentNode { Content = new Fragment<ISymbolicExpressionTreeNode> { Root = subtree }, Rank = graphNode.Rank };
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195 | if (parentNode != null) {
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196 | AddChild(parentNode, node);
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197 | }
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198 | fragmentGraph.AddVertex(node);
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199 |
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200 | // if the selected subtree is the actual fragment
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201 | if (fragment.Index == subtreeIndex) {
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202 | if (fragmentLength != subtreeLength) throw new Exception("Fragment and subtree lengths should be the same!");
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203 | graphNode = parentVertices.Last();
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204 | tree = graphNode.Content;
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205 | subtree = tree.NodeAt(fragment.OldIndex);
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206 | parentNode = node;
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207 | continue;
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208 | }
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209 | // if the fragment contains the selected subtree => track fragment, then track subtree
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210 | if (fragment.Index < subtreeIndex && subtreeIndex < fragment.Index + fragmentLength) {
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211 | if (subtreeLength >= fragmentLength) throw new Exception("Fragment contains subtree, so subtree length should be less than the fragment length.");
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212 |
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213 | graphNode = parentVertices.Last();
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214 | tree = graphNode.Content;
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215 | var i = fragment.Root.IndexOf(subtree); // get the index of the selected subtree, relative to the fragment root
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216 | subtree = tree.NodeAt(fragment.OldIndex + i);
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217 | parentNode = node;
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218 | continue;
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219 | }
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220 | // if the selected subtree contains the fragment => track fragment and subtree
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221 | if (subtreeIndex < fragment.Index && fragment.Index < subtreeIndex + subtreeLength) {
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222 | if (fragmentLength >= subtreeLength) throw new Exception("Subtree contains fragment, so fragment length should be less than the subtree length.");
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223 |
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224 | graphNode = parentVertices[0];
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225 | tree = graphNode.Content;
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226 | subtree = tree.NodeAt(subtreeIndex);
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227 | // track subtree
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228 | Trace(graphNode, subtree, fragmentGraph, node);
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229 |
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230 | // track fragment
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231 | if (parentVertices.Count > 1) {
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232 | graphNode = parentVertices[1];
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233 | tree = graphNode.Content;
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234 | subtree = tree.NodeAt(fragment.OldIndex);
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235 | parentNode = node;
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236 | continue;
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237 | }
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238 | } else {
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239 | // fragment and subtree are completely distinct => we only track the subtree
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240 | graphNode = parentVertices[0];
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241 | tree = graphNode.Content;
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242 | subtree = tree.NodeAt(subtreeIndex);
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243 | parentNode = node;
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244 | continue;
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245 | }
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246 | break;
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247 | }
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248 | }
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249 |
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250 | private void AddChild(FragmentNode parent, FragmentNode child) {
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251 | child.Rank = parent.Rank - 1;
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252 | parent.AddForwardArc(child);
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253 | child.AddReverseArc(parent);
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254 | }
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255 | #endregion
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256 | }
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257 |
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258 | internal static class Util {
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259 | private static string ViewAsText(this ISymbolicExpressionTreeNode root) {
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260 | var writer = new StringWriter();
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261 | SymbolicExpressionTreeHierarchicalFormatter.RenderNode(writer, root, string.Empty);
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262 | return writer.ToString();
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263 | }
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264 | internal static ISymbolicExpressionTreeNode NodeAt(this ISymbolicExpressionTree tree, int position) {
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265 | return NodeAt(tree.Root, position);
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266 | }
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267 | internal static ISymbolicExpressionTreeNode NodeAt(this ISymbolicExpressionTreeNode root, int position) {
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268 | return root.IterateNodesPrefix().ElementAt(position);
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269 | }
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270 | internal static int IndexOf(this ISymbolicExpressionTree tree, ISymbolicExpressionTreeNode node) {
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271 | return IndexOf(tree.Root, node);
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272 | }
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273 | internal static int IndexOf(this ISymbolicExpressionTreeNode root, ISymbolicExpressionTreeNode node) {
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274 | return root.IterateNodesPrefix().ToList().IndexOf(node); // not too worried about efficiency here
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275 | }
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276 | }
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277 | }
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