[3244] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[12012] | 3 | * Copyright (C) 2002-2015 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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| 29 |
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[10565] | 30 |
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[3244] | 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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[10799] | 41 | private int minHorizontalDistance = 30;
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| 42 | private 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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[10565] | 52 |
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| 53 | visualTreeNodes = new Dictionary<ISymbolicExpressionTreeNode, VisualTreeNode<ISymbolicExpressionTreeNode>>();
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| 54 | visualLines = new Dictionary<Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>, VisualTreeNodeConnection>();
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| 55 |
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| 56 | layoutEngine = new ReingoldTilfordLayoutEngine<ISymbolicExpressionTreeNode>(n => n.Subtrees) {
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[10520] | 57 | NodeWidth = preferredNodeWidth,
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| 58 | NodeHeight = preferredNodeHeight,
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| 59 | HorizontalSpacing = minHorizontalDistance,
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| 60 | VerticalSpacing = minVerticalDistance
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| 61 | };
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[10565] | 62 | reingoldTilfordToolStripMenuItem.Checked = true;
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[3244] | 63 | }
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| 64 |
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[5513] | 65 | public SymbolicExpressionTreeChart(ISymbolicExpressionTree tree)
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[3244] | 66 | : this() {
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| 67 | this.Tree = tree;
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| 68 | }
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| 69 |
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[10496] | 70 | #region Public properties
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[3244] | 71 | private int spacing;
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| 72 | public int Spacing {
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| 73 | get { return this.spacing; }
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| 74 | set {
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| 75 | this.spacing = value;
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| 76 | this.Repaint();
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| 77 | }
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| 78 | }
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| 79 |
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| 80 | private Color lineColor;
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| 81 | public Color LineColor {
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| 82 | get { return this.lineColor; }
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| 83 | set {
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| 84 | this.lineColor = value;
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| 85 | this.Repaint();
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| 86 | }
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| 87 | }
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| 88 |
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| 89 | private Color backgroundColor;
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| 90 | public Color BackgroundColor {
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| 91 | get { return this.backgroundColor; }
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| 92 | set {
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| 93 | this.backgroundColor = value;
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| 94 | this.Repaint();
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| 95 | }
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| 96 | }
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| 97 |
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| 98 | private Font textFont;
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| 99 | public Font TextFont {
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| 100 | get { return this.textFont; }
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| 101 | set {
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| 102 | this.textFont = value;
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| 103 | this.Repaint();
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| 104 | }
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| 105 | }
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| 106 |
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[5513] | 107 | private ISymbolicExpressionTree tree;
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| 108 | public ISymbolicExpressionTree Tree {
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[3244] | 109 | get { return this.tree; }
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| 110 | set {
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| 111 | tree = value;
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[10565] | 112 | Repaint();
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[3244] | 113 | }
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| 114 | }
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| 115 |
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[6803] | 116 | private bool suspendRepaint;
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| 117 | public bool SuspendRepaint {
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| 118 | get { return suspendRepaint; }
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| 119 | set { suspendRepaint = value; }
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| 120 | }
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[10496] | 121 | #endregion
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[6803] | 122 |
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[3470] | 123 | protected override void OnPaint(PaintEventArgs e) {
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[6803] | 124 | e.Graphics.DrawImage(image, 0, 0);
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[3470] | 125 | base.OnPaint(e);
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| 126 | }
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| 127 | protected override void OnResize(EventArgs e) {
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| 128 | base.OnResize(e);
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[5956] | 129 | if (this.Width <= 1 || this.Height <= 1)
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[3470] | 130 | this.image = new Bitmap(1, 1);
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[10561] | 131 | else {
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[3470] | 132 | this.image = new Bitmap(Width, Height);
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[10561] | 133 | }
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[3470] | 134 | this.Repaint();
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| 135 | }
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[3244] | 136 |
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[10561] | 137 | public event EventHandler Repainted;//expose this event to notify the parent control that the tree was repainted
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| 138 | protected virtual void OnRepaint(object sender, EventArgs e) {
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| 139 | var repainted = Repainted;
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| 140 | if (repainted != null) {
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| 141 | repainted(sender, e);
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| 142 | }
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| 143 | }
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| 144 |
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[3244] | 145 | public void Repaint() {
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[6803] | 146 | if (!suspendRepaint) {
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| 147 | this.GenerateImage();
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| 148 | this.Refresh();
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[10561] | 149 | OnRepaint(this, EventArgs.Empty);
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[6803] | 150 | }
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[3470] | 151 | }
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| 152 |
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[8980] | 153 | public void RepaintNodes() {
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| 154 | if (!suspendRepaint) {
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[8986] | 155 | using (var graphics = Graphics.FromImage(image)) {
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| 156 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 157 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 158 | foreach (var visualNode in visualTreeNodes.Values) {
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| 159 | DrawTreeNode(graphics, visualNode);
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[10561] | 160 | if (visualNode.Content.SubtreeCount > 0) {
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| 161 | foreach (var visualSubtree in visualNode.Content.Subtrees.Select(s => visualTreeNodes[s])) {
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| 162 | DrawLine(graphics, visualNode, visualSubtree);
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| 163 | }
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| 164 | }
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[8986] | 165 | }
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[8980] | 166 | }
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| 167 | this.Refresh();
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| 168 | }
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| 169 | }
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| 170 |
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[10520] | 171 | public void RepaintNode(VisualTreeNode<ISymbolicExpressionTreeNode> visualNode) {
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[8980] | 172 | if (!suspendRepaint) {
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[8986] | 173 | using (var graphics = Graphics.FromImage(image)) {
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| 174 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 175 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 176 | DrawTreeNode(graphics, visualNode);
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| 177 | }
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[8980] | 178 | this.Refresh();
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| 179 | }
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| 180 | }
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| 181 |
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[3470] | 182 | private void GenerateImage() {
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| 183 | using (Graphics graphics = Graphics.FromImage(image)) {
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[3244] | 184 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 185 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 186 | graphics.Clear(backgroundColor);
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| 187 | if (tree != null) {
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[10561] | 188 | DrawFunctionTree(graphics, preferredNodeWidth, preferredNodeHeight, minHorizontalDistance, minVerticalDistance);
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[3244] | 189 | }
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| 190 | }
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| 191 | }
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| 192 |
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[10520] | 193 | public VisualTreeNode<ISymbolicExpressionTreeNode> GetVisualSymbolicExpressionTreeNode(ISymbolicExpressionTreeNode symbolicExpressionTreeNode) {
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[3915] | 194 | if (visualTreeNodes.ContainsKey(symbolicExpressionTreeNode))
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| 195 | return visualTreeNodes[symbolicExpressionTreeNode];
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| 196 | return null;
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| 197 | }
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| 198 |
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[10520] | 199 | public VisualTreeNodeConnection GetVisualSymbolicExpressionTreeNodeConnection(ISymbolicExpressionTreeNode parent, ISymbolicExpressionTreeNode child) {
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[6803] | 200 | if (child.Parent != parent) throw new ArgumentException();
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| 201 | var key = Tuple.Create(parent, child);
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[10520] | 202 | VisualTreeNodeConnection connection = null;
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[6803] | 203 | visualLines.TryGetValue(key, out connection);
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| 204 | return connection;
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| 205 | }
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| 206 |
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[3244] | 207 | #region events
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| 208 | public event MouseEventHandler SymbolicExpressionTreeNodeClicked;
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[8942] | 209 | protected virtual void OnSymbolicExpressionTreeNodeClicked(object sender, MouseEventArgs e) {
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[3244] | 210 | var clicked = SymbolicExpressionTreeNodeClicked;
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| 211 | if (clicked != null)
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| 212 | clicked(sender, e);
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| 213 | }
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| 214 |
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[9043] | 215 | protected virtual void SymbolicExpressionTreeChart_MouseClick(object sender, MouseEventArgs e) {
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[10520] | 216 | var visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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[8942] | 217 | if (visualTreeNode != null) {
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[3244] | 218 | OnSymbolicExpressionTreeNodeClicked(visualTreeNode, e);
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[8942] | 219 | }
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[3244] | 220 | }
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| 221 |
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| 222 | public event MouseEventHandler SymbolicExpressionTreeNodeDoubleClicked;
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[8942] | 223 | protected virtual void OnSymbolicExpressionTreeNodeDoubleClicked(object sender, MouseEventArgs e) {
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[3244] | 224 | var doubleClicked = SymbolicExpressionTreeNodeDoubleClicked;
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| 225 | if (doubleClicked != null)
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| 226 | doubleClicked(sender, e);
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| 227 | }
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| 228 |
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[9043] | 229 | protected virtual void SymbolicExpressionTreeChart_MouseDoubleClick(object sender, MouseEventArgs e) {
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[10520] | 230 | VisualTreeNode<ISymbolicExpressionTreeNode> visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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[3244] | 231 | if (visualTreeNode != null)
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| 232 | OnSymbolicExpressionTreeNodeDoubleClicked(visualTreeNode, e);
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| 233 | }
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| 234 |
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| 235 | public event ItemDragEventHandler SymbolicExpressionTreeNodeDrag;
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[8942] | 236 | protected virtual void OnSymbolicExpressionTreeNodeDragDrag(object sender, ItemDragEventArgs e) {
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[3244] | 237 | var dragged = SymbolicExpressionTreeNodeDrag;
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| 238 | if (dragged != null)
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| 239 | dragged(sender, e);
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| 240 | }
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| 241 |
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[10520] | 242 | private VisualTreeNode<ISymbolicExpressionTreeNode> draggedSymbolicExpressionTree;
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[3244] | 243 | private MouseButtons dragButtons;
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| 244 | private void SymbolicExpressionTreeChart_MouseDown(object sender, MouseEventArgs e) {
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| 245 | this.dragButtons = e.Button;
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| 246 | this.draggedSymbolicExpressionTree = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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| 247 | }
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| 248 | private void SymbolicExpressionTreeChart_MouseUp(object sender, MouseEventArgs e) {
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| 249 | this.draggedSymbolicExpressionTree = null;
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| 250 | this.dragButtons = MouseButtons.None;
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| 251 | }
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| 252 |
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| 253 | private void SymbolicExpressionTreeChart_MouseMove(object sender, MouseEventArgs e) {
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[10520] | 254 | VisualTreeNode<ISymbolicExpressionTreeNode> visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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[3244] | 255 | if (draggedSymbolicExpressionTree != null &&
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| 256 | draggedSymbolicExpressionTree != visualTreeNode) {
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| 257 | OnSymbolicExpressionTreeNodeDragDrag(draggedSymbolicExpressionTree, new ItemDragEventArgs(dragButtons, draggedSymbolicExpressionTree));
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| 258 | draggedSymbolicExpressionTree = null;
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| 259 | } else if (draggedSymbolicExpressionTree == null &&
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| 260 | visualTreeNode != null) {
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| 261 | string tooltipText = visualTreeNode.ToolTip;
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| 262 | if (this.toolTip.GetToolTip(this) != tooltipText)
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| 263 | this.toolTip.SetToolTip(this, tooltipText);
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| 264 |
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| 265 | } else if (visualTreeNode == null)
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| 266 | this.toolTip.SetToolTip(this, "");
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| 267 | }
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| 268 |
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[10520] | 269 | public VisualTreeNode<ISymbolicExpressionTreeNode> FindVisualSymbolicExpressionTreeNodeAt(int x, int y) {
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[3244] | 270 | foreach (var visualTreeNode in visualTreeNodes.Values) {
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| 271 | if (x >= visualTreeNode.X && x <= visualTreeNode.X + visualTreeNode.Width &&
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| 272 | y >= visualTreeNode.Y && y <= visualTreeNode.Y + visualTreeNode.Height)
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| 273 | return visualTreeNode;
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| 274 | }
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| 275 | return null;
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| 276 | }
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| 277 | #endregion
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| 278 |
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[10565] | 279 | private void CalculateLayout(int preferredWidth, int preferredHeight, int minHDistance, int minVDistance) {
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| 280 | layoutEngine.NodeWidth = preferredWidth;
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| 281 | layoutEngine.NodeHeight = preferredHeight;
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| 282 | layoutEngine.HorizontalSpacing = minHDistance;
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| 283 | layoutEngine.VerticalSpacing = minVDistance;
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| 284 |
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[10561] | 285 | var actualRoot = tree.Root;
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| 286 | if (actualRoot.Symbol is ProgramRootSymbol && actualRoot.SubtreeCount == 1) {
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| 287 | actualRoot = tree.Root.GetSubtree(0);
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| 288 | }
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| 289 |
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[10565] | 290 | var visualNodes = layoutEngine.CalculateLayout(actualRoot, Width, Height).ToList();
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[10520] | 291 | visualTreeNodes = visualNodes.ToDictionary(x => x.Content, x => x);
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| 292 | visualLines = new Dictionary<Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>, VisualTreeNodeConnection>();
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| 293 | foreach (var node in visualNodes.Select(n => n.Content)) {
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| 294 | foreach (var subtree in node.Subtrees) {
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| 295 | visualLines.Add(new Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>(node, subtree), new VisualTreeNodeConnection());
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[8986] | 296 | }
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[10496] | 297 | }
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[10531] | 298 | }
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[10565] | 299 |
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[10531] | 300 | #region methods for painting the symbolic expression tree
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[12237] | 301 | private void DrawFunctionTree(Graphics graphics, int preferredWidth, int preferredHeight, int minHDistance, int minVDistance, bool recalculateLayout = true) {
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| 302 | if (recalculateLayout)
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| 303 | CalculateLayout(preferredWidth, preferredHeight, minHDistance, minVDistance);
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[10531] | 304 | var visualNodes = visualTreeNodes.Values;
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| 305 | //draw nodes and connections
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[10520] | 306 | foreach (var visualNode in visualNodes) {
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[10885] | 307 | DrawTreeNode(graphics, visualNode);
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[10520] | 308 | var node = visualNode.Content;
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[10496] | 309 | foreach (var subtree in node.Subtrees) {
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| 310 | var visualLine = GetVisualSymbolicExpressionTreeNodeConnection(node, subtree);
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| 311 | var visualSubtree = visualTreeNodes[subtree];
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| 312 | var origin = new Point(visualNode.X + visualNode.Width / 2, visualNode.Y + visualNode.Height);
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| 313 | var target = new Point(visualSubtree.X + visualSubtree.Width / 2, visualSubtree.Y);
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| 314 | 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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| 315 | using (var linePen = new Pen(visualLine.LineColor)) {
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[8986] | 316 | linePen.DashStyle = visualLine.DashStyle;
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[10496] | 317 | graphics.DrawLine(linePen, origin, target);
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[8986] | 318 | }
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[6803] | 319 | }
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[3244] | 320 | }
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| 321 | }
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[8980] | 322 |
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[10520] | 323 | protected void DrawTreeNode(Graphics graphics, VisualTreeNode<ISymbolicExpressionTreeNode> visualTreeNode) {
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[8980] | 324 | graphics.Clip = new Region(new Rectangle(visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width + 1, visualTreeNode.Height + 1));
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| 325 | graphics.Clear(backgroundColor);
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[10520] | 326 | var node = visualTreeNode.Content;
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[8986] | 327 | using (var textBrush = new SolidBrush(visualTreeNode.TextColor))
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| 328 | using (var nodeLinePen = new Pen(visualTreeNode.LineColor))
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| 329 | using (var nodeFillBrush = new SolidBrush(visualTreeNode.FillColor)) {
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| 330 | //draw terminal node
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| 331 | if (node.SubtreeCount == 0) {
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| 332 | graphics.FillRectangle(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 333 | graphics.DrawRectangle(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 334 | } else {
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| 335 | graphics.FillEllipse(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 336 | graphics.DrawEllipse(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 337 | }
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| 338 | //draw name of symbol
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| 339 | var text = node.ToString();
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| 340 | graphics.DrawString(text, textFont, textBrush, new RectangleF(visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height), stringFormat);
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[8980] | 341 | }
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| 342 | }
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[10561] | 343 |
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| 344 | protected void DrawLine(Graphics graphics, VisualTreeNode<ISymbolicExpressionTreeNode> startNode, VisualTreeNode<ISymbolicExpressionTreeNode> endNode) {
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| 345 | var origin = new Point(startNode.X + startNode.Width / 2, startNode.Y + startNode.Height);
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| 346 | var target = new Point(endNode.X + endNode.Width / 2, endNode.Y);
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| 347 | 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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| 348 | var visualLine = GetVisualSymbolicExpressionTreeNodeConnection(startNode.Content, endNode.Content);
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| 349 | using (var linePen = new Pen(visualLine.LineColor)) {
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| 350 | linePen.DashStyle = visualLine.DashStyle;
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| 351 | graphics.DrawLine(linePen, origin, target);
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| 352 | }
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| 353 | }
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[3244] | 354 | #endregion
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[4651] | 355 | #region save image
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| 356 | private void saveImageToolStripMenuItem_Click(object sender, EventArgs e) {
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| 357 | if (saveFileDialog.ShowDialog() == DialogResult.OK) {
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| 358 | string filename = saveFileDialog.FileName.ToLower();
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| 359 | if (filename.EndsWith("bmp")) SaveImageAsBitmap(filename);
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| 360 | else if (filename.EndsWith("emf")) SaveImageAsEmf(filename);
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| 361 | else SaveImageAsBitmap(filename);
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| 362 | }
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| 363 | }
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| 364 |
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[9587] | 365 | public void SaveImageAsBitmap(string filename) {
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[4651] | 366 | if (tree == null) return;
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| 367 | Image image = new Bitmap(Width, Height);
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| 368 | using (Graphics g = Graphics.FromImage(image)) {
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[12237] | 369 | DrawFunctionTree(g, preferredNodeWidth, preferredNodeHeight, minHorizontalDistance, minVerticalDistance, false);
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[4651] | 370 | }
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| 371 | image.Save(filename);
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| 372 | }
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| 373 |
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[9587] | 374 | public void SaveImageAsEmf(string filename) {
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[4651] | 375 | if (tree == null) return;
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| 376 | using (Graphics g = CreateGraphics()) {
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| 377 | using (Metafile file = new Metafile(filename, g.GetHdc())) {
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| 378 | using (Graphics emfFile = Graphics.FromImage(file)) {
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[12237] | 379 | DrawFunctionTree(emfFile, preferredNodeWidth, preferredNodeHeight, minHorizontalDistance, minVerticalDistance, false);
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[4651] | 380 | }
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| 381 | }
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| 382 | g.ReleaseHdc();
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| 383 | }
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| 384 | }
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| 385 | #endregion
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[10496] | 386 | #region export pgf/tikz
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| 387 | private void exportLatexToolStripMenuItem_Click(object sender, EventArgs e) {
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[11065] | 388 | var t = Tree;
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| 389 | if (t == null) return;
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[10496] | 390 | using (var dialog = new SaveFileDialog { Filter = "Tex (*.tex)|*.tex" }) {
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| 391 | if (dialog.ShowDialog() != DialogResult.OK) return;
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| 392 | string filename = dialog.FileName.ToLower();
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| 393 | var formatter = new SymbolicExpressionTreeLatexFormatter();
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[11065] | 394 | File.WriteAllText(filename, formatter.Format(t));
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[10496] | 395 | }
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| 396 | }
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| 397 | #endregion
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[10520] | 398 |
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| 399 | private void reingoldTilfordToolStripMenuItem_Click(object sender, EventArgs e) {
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[10799] | 400 | minHorizontalDistance = 30;
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[10885] | 401 | minVerticalDistance = 30;
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[10565] | 402 | layoutEngine = new ReingoldTilfordLayoutEngine<ISymbolicExpressionTreeNode>(n => n.Subtrees) {
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[10520] | 403 | NodeWidth = preferredNodeWidth,
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| 404 | NodeHeight = preferredNodeHeight,
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| 405 | HorizontalSpacing = minHorizontalDistance,
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| 406 | VerticalSpacing = minVerticalDistance
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| 407 | };
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[10565] | 408 | reingoldTilfordToolStripMenuItem.Checked = true;
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| 409 | boxesToolStripMenuItem.Checked = false;
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| 410 | Repaint();
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[10520] | 411 | }
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| 412 |
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| 413 | private void boxesToolStripMenuItem_Click(object sender, EventArgs e) {
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[10885] | 414 | minHorizontalDistance = 5;
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[10862] | 415 | minVerticalDistance = 5;
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[10565] | 416 | layoutEngine = new BoxesLayoutEngine<ISymbolicExpressionTreeNode>(n => n.Subtrees, n => n.GetLength(), n => n.GetDepth()) {
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[10520] | 417 | NodeWidth = preferredNodeWidth,
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| 418 | NodeHeight = preferredNodeHeight,
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| 419 | HorizontalSpacing = minHorizontalDistance,
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| 420 | VerticalSpacing = minVerticalDistance
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| 421 | };
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[10565] | 422 | reingoldTilfordToolStripMenuItem.Checked = false;
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| 423 | boxesToolStripMenuItem.Checked = true;
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| 424 | Repaint();
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[10520] | 425 | }
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[3244] | 426 | }
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| 427 | }
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