[3244] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[9456] | 3 | * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3244] | 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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[4651] | 25 | using System.Drawing.Imaging;
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[10496] | 26 | using System.IO;
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| 27 | using System.Linq;
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[3244] | 28 | using System.Windows.Forms;
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[10496] | 29 | using Point = System.Drawing.Point;
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[3244] | 30 |
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| 31 | namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Views {
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[8942] | 32 | public partial class SymbolicExpressionTreeChart : UserControl {
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[3470] | 33 | private Image image;
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[10496] | 34 | private readonly StringFormat stringFormat;
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[10520] | 35 | private Dictionary<ISymbolicExpressionTreeNode, VisualTreeNode<ISymbolicExpressionTreeNode>> visualTreeNodes;
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| 36 | private Dictionary<Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>, VisualTreeNodeConnection> visualLines;
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| 37 | private ILayoutEngine<ISymbolicExpressionTreeNode> layoutEngine;
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[3244] | 38 |
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[10496] | 39 | private const int preferredNodeWidth = 70;
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| 40 | private const int preferredNodeHeight = 46;
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[10520] | 41 | private const int minHorizontalDistance = 30;
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| 42 | private const int minVerticalDistance = 30;
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[10496] | 43 |
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[3244] | 44 | public SymbolicExpressionTreeChart() {
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| 45 | InitializeComponent();
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[3470] | 46 | this.image = new Bitmap(Width, Height);
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[8942] | 47 | this.stringFormat = new StringFormat { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center };
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[3244] | 48 | this.spacing = 5;
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| 49 | this.lineColor = Color.Black;
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| 50 | this.backgroundColor = Color.White;
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[10496] | 51 | this.textFont = new Font(FontFamily.GenericSansSerif, 12);
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[10531] | 52 | layoutEngine = new ReingoldTilfordLayoutEngine<ISymbolicExpressionTreeNode> {
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[10520] | 53 | NodeWidth = preferredNodeWidth,
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| 54 | NodeHeight = preferredNodeHeight,
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| 55 | HorizontalSpacing = minHorizontalDistance,
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| 56 | VerticalSpacing = minVerticalDistance
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| 57 | };
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[3244] | 58 | }
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| 59 |
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[5513] | 60 | public SymbolicExpressionTreeChart(ISymbolicExpressionTree tree)
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[3244] | 61 | : this() {
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| 62 | this.Tree = tree;
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| 63 | }
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| 64 |
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[10496] | 65 | #region Public properties
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[3244] | 66 | private int spacing;
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| 67 | public int Spacing {
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| 68 | get { return this.spacing; }
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| 69 | set {
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| 70 | this.spacing = value;
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| 71 | this.Repaint();
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| 72 | }
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| 73 | }
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| 74 |
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| 75 | private Color lineColor;
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| 76 | public Color LineColor {
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| 77 | get { return this.lineColor; }
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| 78 | set {
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| 79 | this.lineColor = value;
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| 80 | this.Repaint();
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| 81 | }
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| 82 | }
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| 83 |
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| 84 | private Color backgroundColor;
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| 85 | public Color BackgroundColor {
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| 86 | get { return this.backgroundColor; }
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| 87 | set {
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| 88 | this.backgroundColor = value;
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| 89 | this.Repaint();
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| 90 | }
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| 91 | }
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| 92 |
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| 93 | private Font textFont;
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| 94 | public Font TextFont {
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| 95 | get { return this.textFont; }
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| 96 | set {
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| 97 | this.textFont = value;
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| 98 | this.Repaint();
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| 99 | }
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| 100 | }
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| 101 |
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[5513] | 102 | private ISymbolicExpressionTree tree;
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| 103 | public ISymbolicExpressionTree Tree {
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[3244] | 104 | get { return this.tree; }
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| 105 | set {
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| 106 | tree = value;
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| 107 | if (tree != null) {
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[10531] | 108 | //the layout engine needs to be initialized here so that the visualNodes and the visualLines dictionaries are populated
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| 109 | InitializeLayout();
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[10520] | 110 | Repaint();
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[3244] | 111 | }
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| 112 | }
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| 113 | }
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| 114 |
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[6803] | 115 | private bool suspendRepaint;
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| 116 | public bool SuspendRepaint {
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| 117 | get { return suspendRepaint; }
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| 118 | set { suspendRepaint = value; }
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| 119 | }
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[10496] | 120 | #endregion
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[6803] | 121 |
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[3470] | 122 | protected override void OnPaint(PaintEventArgs e) {
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[6803] | 123 | e.Graphics.DrawImage(image, 0, 0);
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[3470] | 124 | base.OnPaint(e);
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| 125 | }
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| 126 | protected override void OnResize(EventArgs e) {
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| 127 | base.OnResize(e);
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[5956] | 128 | if (this.Width <= 1 || this.Height <= 1)
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[3470] | 129 | this.image = new Bitmap(1, 1);
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| 130 | else
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| 131 | this.image = new Bitmap(Width, Height);
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| 132 | this.Repaint();
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| 133 | }
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[3244] | 134 |
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| 135 | public void Repaint() {
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[6803] | 136 | if (!suspendRepaint) {
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| 137 | this.GenerateImage();
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| 138 | this.Refresh();
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| 139 | }
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[3470] | 140 | }
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| 141 |
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[8980] | 142 | public void RepaintNodes() {
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| 143 | if (!suspendRepaint) {
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[8986] | 144 | using (var graphics = Graphics.FromImage(image)) {
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| 145 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 146 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 147 | foreach (var visualNode in visualTreeNodes.Values) {
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| 148 | DrawTreeNode(graphics, visualNode);
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| 149 | }
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[8980] | 150 | }
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| 151 | this.Refresh();
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| 152 | }
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| 153 | }
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| 154 |
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[10520] | 155 | public void RepaintNode(VisualTreeNode<ISymbolicExpressionTreeNode> visualNode) {
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[8980] | 156 | if (!suspendRepaint) {
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[8986] | 157 | using (var graphics = Graphics.FromImage(image)) {
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| 158 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 159 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 160 | DrawTreeNode(graphics, visualNode);
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| 161 | }
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[8980] | 162 | this.Refresh();
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| 163 | }
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| 164 | }
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| 165 |
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[3470] | 166 | private void GenerateImage() {
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| 167 | using (Graphics graphics = Graphics.FromImage(image)) {
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[3244] | 168 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 169 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 170 | graphics.Clear(backgroundColor);
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| 171 | if (tree != null) {
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[10496] | 172 | DrawFunctionTree(tree, graphics, preferredNodeWidth, preferredNodeHeight, minHorizontalDistance, minVerticalDistance);
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[3244] | 173 | }
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| 174 | }
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| 175 | }
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| 176 |
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[10520] | 177 | public VisualTreeNode<ISymbolicExpressionTreeNode> GetVisualSymbolicExpressionTreeNode(ISymbolicExpressionTreeNode symbolicExpressionTreeNode) {
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[3915] | 178 | if (visualTreeNodes.ContainsKey(symbolicExpressionTreeNode))
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| 179 | return visualTreeNodes[symbolicExpressionTreeNode];
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| 180 | return null;
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| 181 | }
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| 182 |
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[10520] | 183 | public VisualTreeNodeConnection GetVisualSymbolicExpressionTreeNodeConnection(ISymbolicExpressionTreeNode parent, ISymbolicExpressionTreeNode child) {
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[6803] | 184 | if (child.Parent != parent) throw new ArgumentException();
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| 185 | var key = Tuple.Create(parent, child);
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[10520] | 186 | VisualTreeNodeConnection connection = null;
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[6803] | 187 | visualLines.TryGetValue(key, out connection);
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| 188 | return connection;
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| 189 | }
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| 190 |
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[3244] | 191 | #region events
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| 192 | public event MouseEventHandler SymbolicExpressionTreeNodeClicked;
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[8942] | 193 | protected virtual void OnSymbolicExpressionTreeNodeClicked(object sender, MouseEventArgs e) {
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[3244] | 194 | var clicked = SymbolicExpressionTreeNodeClicked;
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| 195 | if (clicked != null)
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| 196 | clicked(sender, e);
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| 197 | }
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| 198 |
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[9043] | 199 | protected virtual void SymbolicExpressionTreeChart_MouseClick(object sender, MouseEventArgs e) {
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[10520] | 200 | var visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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[8942] | 201 | if (visualTreeNode != null) {
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[3244] | 202 | OnSymbolicExpressionTreeNodeClicked(visualTreeNode, e);
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[8942] | 203 | }
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[3244] | 204 | }
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| 205 |
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| 206 | public event MouseEventHandler SymbolicExpressionTreeNodeDoubleClicked;
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[8942] | 207 | protected virtual void OnSymbolicExpressionTreeNodeDoubleClicked(object sender, MouseEventArgs e) {
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[3244] | 208 | var doubleClicked = SymbolicExpressionTreeNodeDoubleClicked;
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| 209 | if (doubleClicked != null)
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| 210 | doubleClicked(sender, e);
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| 211 | }
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| 212 |
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[9043] | 213 | protected virtual void SymbolicExpressionTreeChart_MouseDoubleClick(object sender, MouseEventArgs e) {
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[10520] | 214 | VisualTreeNode<ISymbolicExpressionTreeNode> visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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[3244] | 215 | if (visualTreeNode != null)
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| 216 | OnSymbolicExpressionTreeNodeDoubleClicked(visualTreeNode, e);
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| 217 | }
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| 218 |
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| 219 | public event ItemDragEventHandler SymbolicExpressionTreeNodeDrag;
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[8942] | 220 | protected virtual void OnSymbolicExpressionTreeNodeDragDrag(object sender, ItemDragEventArgs e) {
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[3244] | 221 | var dragged = SymbolicExpressionTreeNodeDrag;
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| 222 | if (dragged != null)
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| 223 | dragged(sender, e);
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| 224 | }
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| 225 |
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[10520] | 226 | private VisualTreeNode<ISymbolicExpressionTreeNode> draggedSymbolicExpressionTree;
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[3244] | 227 | private MouseButtons dragButtons;
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| 228 | private void SymbolicExpressionTreeChart_MouseDown(object sender, MouseEventArgs e) {
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| 229 | this.dragButtons = e.Button;
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| 230 | this.draggedSymbolicExpressionTree = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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| 231 | }
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| 232 | private void SymbolicExpressionTreeChart_MouseUp(object sender, MouseEventArgs e) {
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| 233 | this.draggedSymbolicExpressionTree = null;
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| 234 | this.dragButtons = MouseButtons.None;
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| 235 | }
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| 236 |
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| 237 | private void SymbolicExpressionTreeChart_MouseMove(object sender, MouseEventArgs e) {
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[10531] | 238 |
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[10520] | 239 | VisualTreeNode<ISymbolicExpressionTreeNode> visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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[3244] | 240 | if (draggedSymbolicExpressionTree != null &&
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| 241 | draggedSymbolicExpressionTree != visualTreeNode) {
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| 242 | OnSymbolicExpressionTreeNodeDragDrag(draggedSymbolicExpressionTree, new ItemDragEventArgs(dragButtons, draggedSymbolicExpressionTree));
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| 243 | draggedSymbolicExpressionTree = null;
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| 244 | } else if (draggedSymbolicExpressionTree == null &&
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| 245 | visualTreeNode != null) {
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| 246 | string tooltipText = visualTreeNode.ToolTip;
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| 247 | if (this.toolTip.GetToolTip(this) != tooltipText)
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| 248 | this.toolTip.SetToolTip(this, tooltipText);
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| 249 |
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| 250 | } else if (visualTreeNode == null)
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| 251 | this.toolTip.SetToolTip(this, "");
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| 252 | }
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| 253 |
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[10520] | 254 | public VisualTreeNode<ISymbolicExpressionTreeNode> FindVisualSymbolicExpressionTreeNodeAt(int x, int y) {
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[3244] | 255 | foreach (var visualTreeNode in visualTreeNodes.Values) {
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| 256 | if (x >= visualTreeNode.X && x <= visualTreeNode.X + visualTreeNode.Width &&
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| 257 | y >= visualTreeNode.Y && y <= visualTreeNode.Y + visualTreeNode.Height)
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| 258 | return visualTreeNode;
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| 259 | }
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| 260 | return null;
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| 261 | }
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| 262 | #endregion
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| 263 |
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[10531] | 264 | private void InitializeLayout() {
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| 265 | var actualRoot = tree.Root.SubtreeCount == 1 ? tree.Root.GetSubtree(0) : tree.Root;
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[10520] | 266 | layoutEngine.Initialize(actualRoot, n => n.Subtrees, n => n.GetLength(), n => n.GetDepth());
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[10531] | 267 | layoutEngine.CalculateLayout(this.Width, this.Height);
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[10520] | 268 | var visualNodes = layoutEngine.GetVisualNodes().ToList();
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[10531] | 269 | //populate the visual nodes and visual connections dictionaries
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[10520] | 270 | visualTreeNodes = visualNodes.ToDictionary(x => x.Content, x => x);
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| 271 | visualLines = new Dictionary<Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>, VisualTreeNodeConnection>();
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| 272 | foreach (var node in visualNodes.Select(n => n.Content)) {
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| 273 | foreach (var subtree in node.Subtrees) {
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| 274 | visualLines.Add(new Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>(node, subtree), new VisualTreeNodeConnection());
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[8986] | 275 | }
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[10496] | 276 | }
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[10531] | 277 | }
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| 278 |
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| 279 | #region methods for painting the symbolic expression tree
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| 280 | private void DrawFunctionTree(ISymbolicExpressionTree symbExprTree, Graphics graphics, int preferredWidth, int preferredHeight, int minHDistance, int minVDistance) {
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| 281 | //we assume here that the layout has already been initialized when the symbolic expression tree was changed
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| 282 | //recalculate layout according to new node widths and spacing
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| 283 | layoutEngine.NodeWidth = preferredWidth;
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| 284 | layoutEngine.NodeHeight = preferredHeight;
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| 285 | layoutEngine.HorizontalSpacing = minHDistance;
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| 286 | layoutEngine.VerticalSpacing = minVDistance;
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| 287 | layoutEngine.CalculateLayout(Width, Height);
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| 288 | var visualNodes = visualTreeNodes.Values;
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| 289 | //draw nodes and connections
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[10520] | 290 | foreach (var visualNode in visualNodes) {
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| 291 | DrawTreeNode(visualNode);
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| 292 | var node = visualNode.Content;
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[10496] | 293 | foreach (var subtree in node.Subtrees) {
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| 294 | var visualLine = GetVisualSymbolicExpressionTreeNodeConnection(node, subtree);
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| 295 | var visualSubtree = visualTreeNodes[subtree];
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| 296 | var origin = new Point(visualNode.X + visualNode.Width / 2, visualNode.Y + visualNode.Height);
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| 297 | var target = new Point(visualSubtree.X + visualSubtree.Width / 2, visualSubtree.Y);
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| 298 | graphics.Clip = new Region(new Rectangle(Math.Min(origin.X, target.X), origin.Y, Math.Max(origin.X, target.X), target.Y));
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| 299 | using (var linePen = new Pen(visualLine.LineColor)) {
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[8986] | 300 | linePen.DashStyle = visualLine.DashStyle;
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[10496] | 301 | graphics.DrawLine(linePen, origin, target);
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[8986] | 302 | }
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[6803] | 303 | }
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[3244] | 304 | }
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| 305 | }
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[8980] | 306 |
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[10520] | 307 | protected void DrawTreeNode(VisualTreeNode<ISymbolicExpressionTreeNode> visualTreeNode) {
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[8980] | 308 | using (var graphics = Graphics.FromImage(image)) {
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| 309 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 310 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 311 | DrawTreeNode(graphics, visualTreeNode);
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| 312 | }
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| 313 | }
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| 314 |
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[10520] | 315 | protected void DrawTreeNode(Graphics graphics, VisualTreeNode<ISymbolicExpressionTreeNode> visualTreeNode) {
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[8980] | 316 | graphics.Clip = new Region(new Rectangle(visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width + 1, visualTreeNode.Height + 1));
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| 317 | graphics.Clear(backgroundColor);
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[10520] | 318 | var node = visualTreeNode.Content;
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[8986] | 319 | using (var textBrush = new SolidBrush(visualTreeNode.TextColor))
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| 320 | using (var nodeLinePen = new Pen(visualTreeNode.LineColor))
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| 321 | using (var nodeFillBrush = new SolidBrush(visualTreeNode.FillColor)) {
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| 322 | //draw terminal node
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| 323 | if (node.SubtreeCount == 0) {
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| 324 | graphics.FillRectangle(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 325 | graphics.DrawRectangle(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 326 | } else {
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| 327 | graphics.FillEllipse(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 328 | graphics.DrawEllipse(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 329 | }
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| 330 | //draw name of symbol
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| 331 | var text = node.ToString();
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| 332 | graphics.DrawString(text, textFont, textBrush, new RectangleF(visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height), stringFormat);
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[8980] | 333 | }
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| 334 | }
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[3244] | 335 | #endregion
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[4651] | 336 | #region save image
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| 337 | private void saveImageToolStripMenuItem_Click(object sender, EventArgs e) {
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| 338 | if (saveFileDialog.ShowDialog() == DialogResult.OK) {
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| 339 | string filename = saveFileDialog.FileName.ToLower();
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| 340 | if (filename.EndsWith("bmp")) SaveImageAsBitmap(filename);
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| 341 | else if (filename.EndsWith("emf")) SaveImageAsEmf(filename);
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| 342 | else SaveImageAsBitmap(filename);
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| 343 | }
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| 344 | }
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| 345 |
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[9587] | 346 | public void SaveImageAsBitmap(string filename) {
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[4651] | 347 | if (tree == null) return;
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| 348 | Image image = new Bitmap(Width, Height);
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| 349 | using (Graphics g = Graphics.FromImage(image)) {
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[10496] | 350 | DrawFunctionTree(tree, g, preferredNodeWidth, preferredNodeHeight, minHorizontalDistance, minVerticalDistance);
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[4651] | 351 | }
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| 352 | image.Save(filename);
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| 353 | }
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| 354 |
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[9587] | 355 | public void SaveImageAsEmf(string filename) {
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[4651] | 356 | if (tree == null) return;
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| 357 | using (Graphics g = CreateGraphics()) {
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| 358 | using (Metafile file = new Metafile(filename, g.GetHdc())) {
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| 359 | using (Graphics emfFile = Graphics.FromImage(file)) {
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[10496] | 360 | DrawFunctionTree(tree, emfFile, preferredNodeWidth, preferredNodeHeight, minHorizontalDistance, minVerticalDistance);
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[4651] | 361 | }
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| 362 | }
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| 363 | g.ReleaseHdc();
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| 364 | }
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| 365 | }
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| 366 | #endregion
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[10496] | 367 | #region export pgf/tikz
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| 368 | private void exportLatexToolStripMenuItem_Click(object sender, EventArgs e) {
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| 369 | using (var dialog = new SaveFileDialog { Filter = "Tex (*.tex)|*.tex" }) {
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| 370 | if (dialog.ShowDialog() != DialogResult.OK) return;
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| 371 | string filename = dialog.FileName.ToLower();
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| 372 | var formatter = new SymbolicExpressionTreeLatexFormatter();
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| 373 | File.WriteAllText(filename, formatter.Format(Tree));
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| 374 | }
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| 375 | }
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| 376 | #endregion
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[10520] | 377 |
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| 378 | private void reingoldTilfordToolStripMenuItem_Click(object sender, EventArgs e) {
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| 379 | layoutEngine = new ReingoldTilfordLayoutEngine<ISymbolicExpressionTreeNode> {
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| 380 | NodeWidth = preferredNodeWidth,
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| 381 | NodeHeight = preferredNodeHeight,
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| 382 | HorizontalSpacing = minHorizontalDistance,
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| 383 | VerticalSpacing = minVerticalDistance
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| 384 | };
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[10531] | 385 | InitializeLayout();
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[10520] | 386 | Repaint();
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| 387 | }
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| 388 |
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| 389 | private void boxesToolStripMenuItem_Click(object sender, EventArgs e) {
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| 390 | layoutEngine = new BoxesLayoutEngine<ISymbolicExpressionTreeNode> {
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| 391 | NodeWidth = preferredNodeWidth,
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| 392 | NodeHeight = preferredNodeHeight,
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| 393 | HorizontalSpacing = minHorizontalDistance,
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| 394 | VerticalSpacing = minVerticalDistance
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| 395 | };
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[10531] | 396 | InitializeLayout();
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[10520] | 397 | Repaint();
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| 398 | }
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[3244] | 399 | }
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| 400 | }
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