[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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[3244] | 26 | using System.Windows.Forms;
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[9650] | 27 | using Point = System.Drawing.Point;
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[3244] | 28 |
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| 29 | namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Views {
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[8942] | 30 | public partial class SymbolicExpressionTreeChart : UserControl {
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[3470] | 31 | private Image image;
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[3244] | 32 | private StringFormat stringFormat;
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[5513] | 33 | private Dictionary<ISymbolicExpressionTreeNode, VisualSymbolicExpressionTreeNode> visualTreeNodes;
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[6803] | 34 | private Dictionary<Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>, VisualSymbolicExpressionTreeNodeConnection> visualLines;
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[3244] | 35 |
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| 36 | public SymbolicExpressionTreeChart() {
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| 37 | InitializeComponent();
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[3470] | 38 | this.image = new Bitmap(Width, Height);
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[8942] | 39 | this.stringFormat = new StringFormat { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center };
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[3244] | 40 | this.spacing = 5;
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| 41 | this.lineColor = Color.Black;
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| 42 | this.backgroundColor = Color.White;
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| 43 | this.textFont = new Font("Times New Roman", 8);
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| 44 | }
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| 45 |
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[5513] | 46 | public SymbolicExpressionTreeChart(ISymbolicExpressionTree tree)
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[3244] | 47 | : this() {
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| 48 | this.Tree = tree;
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| 49 | }
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| 50 |
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[9650] | 51 | #region Public properties
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[3244] | 52 | private int spacing;
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| 53 | public int Spacing {
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| 54 | get { return this.spacing; }
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| 55 | set {
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| 56 | this.spacing = value;
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| 57 | this.Repaint();
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| 58 | }
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| 59 | }
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| 60 |
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| 61 | private Color lineColor;
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| 62 | public Color LineColor {
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| 63 | get { return this.lineColor; }
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| 64 | set {
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| 65 | this.lineColor = value;
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| 66 | this.Repaint();
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | private Color backgroundColor;
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| 71 | public Color BackgroundColor {
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| 72 | get { return this.backgroundColor; }
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| 73 | set {
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| 74 | this.backgroundColor = value;
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| 75 | this.Repaint();
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| 76 | }
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| 77 | }
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| 78 |
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| 79 | private Font textFont;
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| 80 | public Font TextFont {
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| 81 | get { return this.textFont; }
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| 82 | set {
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| 83 | this.textFont = value;
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| 84 | this.Repaint();
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| 85 | }
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| 86 | }
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| 87 |
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[5513] | 88 | private ISymbolicExpressionTree tree;
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| 89 | public ISymbolicExpressionTree Tree {
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[3244] | 90 | get { return this.tree; }
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| 91 | set {
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| 92 | tree = value;
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[5513] | 93 | visualTreeNodes = new Dictionary<ISymbolicExpressionTreeNode, VisualSymbolicExpressionTreeNode>();
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[6803] | 94 | visualLines = new Dictionary<Tuple<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode>, VisualSymbolicExpressionTreeNodeConnection>();
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[3244] | 95 | if (tree != null) {
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[6803] | 96 | foreach (ISymbolicExpressionTreeNode node in tree.IterateNodesPrefix()) {
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[3244] | 97 | visualTreeNodes[node] = new VisualSymbolicExpressionTreeNode(node);
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[6803] | 98 | if (node.Parent != null) visualLines[Tuple.Create(node.Parent, node)] = new VisualSymbolicExpressionTreeNodeConnection();
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| 99 | }
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[3244] | 100 | }
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| 101 | Repaint();
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| 102 | }
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| 103 | }
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| 104 |
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[6803] | 105 | private bool suspendRepaint;
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| 106 | public bool SuspendRepaint {
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| 107 | get { return suspendRepaint; }
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| 108 | set { suspendRepaint = value; }
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| 109 | }
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[9650] | 110 | #endregion
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[6803] | 111 |
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[3470] | 112 | protected override void OnPaint(PaintEventArgs e) {
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[6803] | 113 | e.Graphics.DrawImage(image, 0, 0);
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[3470] | 114 | base.OnPaint(e);
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| 115 | }
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| 116 | protected override void OnResize(EventArgs e) {
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| 117 | base.OnResize(e);
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[5956] | 118 | if (this.Width <= 1 || this.Height <= 1)
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[3470] | 119 | this.image = new Bitmap(1, 1);
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| 120 | else
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| 121 | this.image = new Bitmap(Width, Height);
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| 122 | this.Repaint();
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| 123 | }
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[3244] | 124 |
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| 125 | public void Repaint() {
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[6803] | 126 | if (!suspendRepaint) {
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| 127 | this.GenerateImage();
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| 128 | this.Refresh();
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| 129 | }
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[3470] | 130 | }
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| 131 |
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[8980] | 132 | public void RepaintNodes() {
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| 133 | if (!suspendRepaint) {
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[8986] | 134 | using (var graphics = Graphics.FromImage(image)) {
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| 135 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 136 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 137 | foreach (var visualNode in visualTreeNodes.Values) {
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| 138 | DrawTreeNode(graphics, visualNode);
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| 139 | }
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[8980] | 140 | }
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| 141 | this.Refresh();
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| 142 | }
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| 143 | }
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| 144 |
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| 145 | public void RepaintNode(VisualSymbolicExpressionTreeNode visualNode) {
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| 146 | if (!suspendRepaint) {
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[8986] | 147 | using (var graphics = Graphics.FromImage(image)) {
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| 148 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 149 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 150 | DrawTreeNode(graphics, visualNode);
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| 151 | }
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[8980] | 152 | this.Refresh();
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| 153 | }
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| 154 | }
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| 155 |
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[3470] | 156 | private void GenerateImage() {
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| 157 | using (Graphics graphics = Graphics.FromImage(image)) {
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[3244] | 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 | graphics.Clear(backgroundColor);
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| 161 | if (tree != null) {
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[5549] | 162 | int height = this.Height / tree.Depth;
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[3244] | 163 | DrawFunctionTree(tree, graphics, 0, 0, this.Width, height);
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| 164 | }
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| 165 | }
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| 166 | }
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| 167 |
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[5513] | 168 | public VisualSymbolicExpressionTreeNode GetVisualSymbolicExpressionTreeNode(ISymbolicExpressionTreeNode symbolicExpressionTreeNode) {
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[3915] | 169 | if (visualTreeNodes.ContainsKey(symbolicExpressionTreeNode))
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| 170 | return visualTreeNodes[symbolicExpressionTreeNode];
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| 171 | return null;
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| 172 | }
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| 173 |
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[6803] | 174 | public VisualSymbolicExpressionTreeNodeConnection GetVisualSymbolicExpressionTreeNodeConnection(ISymbolicExpressionTreeNode parent, ISymbolicExpressionTreeNode child) {
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| 175 | if (child.Parent != parent) throw new ArgumentException();
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| 176 | var key = Tuple.Create(parent, child);
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| 177 | VisualSymbolicExpressionTreeNodeConnection connection = null;
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| 178 | visualLines.TryGetValue(key, out connection);
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| 179 | return connection;
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| 180 | }
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| 181 |
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[3244] | 182 | #region events
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| 183 | public event MouseEventHandler SymbolicExpressionTreeNodeClicked;
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[8942] | 184 | protected virtual void OnSymbolicExpressionTreeNodeClicked(object sender, MouseEventArgs e) {
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[3244] | 185 | var clicked = SymbolicExpressionTreeNodeClicked;
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| 186 | if (clicked != null)
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| 187 | clicked(sender, e);
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| 188 | }
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| 189 |
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[9043] | 190 | protected virtual void SymbolicExpressionTreeChart_MouseClick(object sender, MouseEventArgs e) {
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[3244] | 191 | VisualSymbolicExpressionTreeNode visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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[8942] | 192 | if (visualTreeNode != null) {
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[3244] | 193 | OnSymbolicExpressionTreeNodeClicked(visualTreeNode, e);
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[8942] | 194 | }
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[3244] | 195 | }
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| 196 |
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| 197 | public event MouseEventHandler SymbolicExpressionTreeNodeDoubleClicked;
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[8942] | 198 | protected virtual void OnSymbolicExpressionTreeNodeDoubleClicked(object sender, MouseEventArgs e) {
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[3244] | 199 | var doubleClicked = SymbolicExpressionTreeNodeDoubleClicked;
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| 200 | if (doubleClicked != null)
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| 201 | doubleClicked(sender, e);
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| 202 | }
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| 203 |
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[9043] | 204 | protected virtual void SymbolicExpressionTreeChart_MouseDoubleClick(object sender, MouseEventArgs e) {
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[3244] | 205 | VisualSymbolicExpressionTreeNode visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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| 206 | if (visualTreeNode != null)
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| 207 | OnSymbolicExpressionTreeNodeDoubleClicked(visualTreeNode, e);
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| 208 | }
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| 209 |
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| 210 | public event ItemDragEventHandler SymbolicExpressionTreeNodeDrag;
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[8942] | 211 | protected virtual void OnSymbolicExpressionTreeNodeDragDrag(object sender, ItemDragEventArgs e) {
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[3244] | 212 | var dragged = SymbolicExpressionTreeNodeDrag;
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| 213 | if (dragged != null)
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| 214 | dragged(sender, e);
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| 215 | }
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| 216 |
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| 217 | private VisualSymbolicExpressionTreeNode draggedSymbolicExpressionTree;
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| 218 | private MouseButtons dragButtons;
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| 219 | private void SymbolicExpressionTreeChart_MouseDown(object sender, MouseEventArgs e) {
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| 220 | this.dragButtons = e.Button;
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| 221 | this.draggedSymbolicExpressionTree = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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| 222 | }
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| 223 | private void SymbolicExpressionTreeChart_MouseUp(object sender, MouseEventArgs e) {
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| 224 | this.draggedSymbolicExpressionTree = null;
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| 225 | this.dragButtons = MouseButtons.None;
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| 226 | }
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| 227 |
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| 228 | private void SymbolicExpressionTreeChart_MouseMove(object sender, MouseEventArgs e) {
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| 229 | VisualSymbolicExpressionTreeNode visualTreeNode = FindVisualSymbolicExpressionTreeNodeAt(e.X, e.Y);
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| 230 | if (draggedSymbolicExpressionTree != null &&
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| 231 | draggedSymbolicExpressionTree != visualTreeNode) {
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| 232 | OnSymbolicExpressionTreeNodeDragDrag(draggedSymbolicExpressionTree, new ItemDragEventArgs(dragButtons, draggedSymbolicExpressionTree));
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| 233 | draggedSymbolicExpressionTree = null;
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| 234 | } else if (draggedSymbolicExpressionTree == null &&
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| 235 | visualTreeNode != null) {
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| 236 | string tooltipText = visualTreeNode.ToolTip;
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| 237 | if (this.toolTip.GetToolTip(this) != tooltipText)
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| 238 | this.toolTip.SetToolTip(this, tooltipText);
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| 239 |
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| 240 | } else if (visualTreeNode == null)
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| 241 | this.toolTip.SetToolTip(this, "");
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| 242 | }
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| 243 |
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[6803] | 244 | public VisualSymbolicExpressionTreeNode FindVisualSymbolicExpressionTreeNodeAt(int x, int y) {
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[3244] | 245 | foreach (var visualTreeNode in visualTreeNodes.Values) {
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| 246 | if (x >= visualTreeNode.X && x <= visualTreeNode.X + visualTreeNode.Width &&
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| 247 | y >= visualTreeNode.Y && y <= visualTreeNode.Y + visualTreeNode.Height)
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| 248 | return visualTreeNode;
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| 249 | }
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| 250 | return null;
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| 251 | }
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| 252 | #endregion
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| 253 |
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| 254 | #region methods for painting the symbolic expression tree
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[9650] | 255 |
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[5513] | 256 | private void DrawFunctionTree(ISymbolicExpressionTree tree, Graphics graphics, int x, int y, int width, int height) {
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[9650] | 257 | // DrawFunctionTree(tree.Root, graphics, x, y, width, height, Point.Empty);
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| 258 | AlternateDraw(tree, graphics, 70, 46, 20, 50);
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[3244] | 259 | }
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| 260 |
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[9650] | 261 | private void AlternateDraw(ISymbolicExpressionTree tree, Graphics graphics, int preferredWidth, int preferredHeight, int minDistance, int maxDistance) {
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| 262 | var tl = new TreeLayout();
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| 263 | tl.Distance = 5;
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| 264 | tl.SymbolicExpressionTree = tree;
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| 265 |
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| 266 | var nodePositions = tl.GetNodeCoordinates();
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| 267 | var bounds = tl.Bounds();
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| 268 |
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| 269 | double sx = Width / bounds.Width;
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| 270 | double sy = Height / bounds.Height;
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| 271 |
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| 272 | double dx = tl.Distance * sx; // scaled horizontal distance
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| 273 | double dy = tl.Distance * sy; // scaled vertical distance
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| 274 |
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| 275 | int maxWidth = (int)Math.Round(dx);
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| 276 | int maxHeight = (int)Math.Round(dy);
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| 277 |
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| 278 | // instead of using the preferred with/height of each node inside the foreach loop below,
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| 279 | // we assume the same width/height for all nodes
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| 280 | int w = Math.Min(preferredWidth, maxWidth - minDistance / 2);
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| 281 | int h = Math.Min(preferredHeight, maxHeight - minDistance / 2);
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| 282 | // adjust scaling factor so that nodes will be at most maxDistance far from each other on the horizontal axis
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| 283 | double offset = 0;
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| 284 | if (maxDistance + w < maxWidth) {
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| 285 | sx *= (double)(maxDistance + w) / maxWidth;
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| 286 | offset = (Width - (sx * bounds.Width)) / 2;
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| 287 | }
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| 288 | foreach (var node in visualTreeNodes.Keys) {
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| 289 | var visualNode = visualTreeNodes[node];
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| 290 | var pos = nodePositions[node];
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| 291 | visualNode.Width = w;
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| 292 | visualNode.Height = h;
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| 293 | visualNode.X = (int)Math.Round(pos.X * sx + offset); ;
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| 294 | visualNode.Y = (int)Math.Round(pos.Y * sy);
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| 295 | DrawTreeNode(graphics, visualNode);
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| 296 | }
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| 297 | graphics.ResetClip(); // reset clip region
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| 298 | foreach (var visualNode in visualTreeNodes.Values) {
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| 299 | var node = visualNode.SymbolicExpressionTreeNode;
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| 300 | foreach (var subtree in node.Subtrees) {
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| 301 | var visualLine = GetVisualSymbolicExpressionTreeNodeConnection(node, subtree);
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| 302 | var visualSubtree = visualTreeNodes[subtree];
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| 303 | var origin = new Point(visualNode.X + visualNode.Width / 2, visualNode.Y + visualNode.Height);
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| 304 | var target = new Point(visualSubtree.X + visualSubtree.Width / 2, visualSubtree.Y);
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| 305 | using (var linePen = new Pen(visualLine.LineColor)) {
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| 306 | linePen.DashStyle = visualLine.DashStyle;
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| 307 | graphics.DrawLine(linePen, origin, target);
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| 308 | }
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| 309 | }
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| 310 | }
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| 311 | }
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| 312 |
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[3244] | 313 | /// <summary>
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| 314 | ///
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| 315 | /// </summary>
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[9650] | 316 | /// <param name="node">the root of the function tree to draw</param>
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[3244] | 317 | /// <param name="graphics">graphics object to draw on</param>
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| 318 | /// <param name="x">x coordinate of drawing area</param>
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| 319 | /// <param name="y">y coordinate of drawing area</param>
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| 320 | /// <param name="width">width of drawing area</param>
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| 321 | /// <param name="height">height of drawing area</param>
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[5513] | 322 | private void DrawFunctionTree(ISymbolicExpressionTreeNode node, Graphics graphics, int x, int y, int width, int height, Point connectionPoint) {
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[3244] | 323 | VisualSymbolicExpressionTreeNode visualTreeNode = visualTreeNodes[node];
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| 324 | float center_x = x + width / 2;
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| 325 | float center_y = y + height / 2;
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| 326 | int actualWidth = width - spacing;
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| 327 | int actualHeight = height - spacing;
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| 328 |
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[8986] | 329 | using (var textBrush = new SolidBrush(visualTreeNode.TextColor))
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| 330 | using (var nodeLinePen = new Pen(visualTreeNode.LineColor))
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| 331 | using (var nodeFillBrush = new SolidBrush(visualTreeNode.FillColor)) {
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[3244] | 332 |
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[8986] | 333 | //calculate size of node
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| 334 | if (actualWidth >= visualTreeNode.PreferredWidth && actualHeight >= visualTreeNode.PreferredHeight) {
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| 335 | visualTreeNode.Width = visualTreeNode.PreferredWidth;
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| 336 | visualTreeNode.Height = visualTreeNode.PreferredHeight;
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| 337 | visualTreeNode.X = (int)center_x - visualTreeNode.Width / 2;
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| 338 | visualTreeNode.Y = (int)center_y - visualTreeNode.Height / 2;
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| 339 | }
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| 340 | //width too small to draw in desired sized
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| 341 | else if (actualWidth < visualTreeNode.PreferredWidth && actualHeight >= visualTreeNode.PreferredHeight) {
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| 342 | visualTreeNode.Width = actualWidth;
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| 343 | visualTreeNode.Height = visualTreeNode.PreferredHeight;
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| 344 | visualTreeNode.X = x;
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| 345 | visualTreeNode.Y = (int)center_y - visualTreeNode.Height / 2;
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| 346 | }
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| 347 | //height too small to draw in desired sized
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| 348 | else if (actualWidth >= visualTreeNode.PreferredWidth && actualHeight < visualTreeNode.PreferredHeight) {
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| 349 | visualTreeNode.Width = visualTreeNode.PreferredWidth;
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| 350 | visualTreeNode.Height = actualHeight;
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| 351 | visualTreeNode.X = (int)center_x - visualTreeNode.Width / 2;
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| 352 | visualTreeNode.Y = y;
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| 353 | }
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| 354 | //width and height too small to draw in desired size
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| 355 | else {
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| 356 | visualTreeNode.Width = actualWidth;
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| 357 | visualTreeNode.Height = actualHeight;
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| 358 | visualTreeNode.X = x;
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| 359 | visualTreeNode.Y = y;
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| 360 | }
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[3244] | 361 |
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[8986] | 362 | //draw terminal node
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| 363 | if (node.SubtreeCount == 0) {
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| 364 | graphics.FillRectangle(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 365 | graphics.DrawRectangle(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 366 | } else {
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| 367 | graphics.FillEllipse(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 368 | graphics.DrawEllipse(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 369 | }
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[3244] | 370 |
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[8986] | 371 | //draw name of symbol
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| 372 | var text = node.ToString();
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| 373 | graphics.DrawString(text, textFont, textBrush, new RectangleF(visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height), stringFormat);
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[3244] | 374 |
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[8986] | 375 | //draw connection line to parent node
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| 376 | if (!connectionPoint.IsEmpty && node.Parent != null) {
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| 377 | var visualLine = GetVisualSymbolicExpressionTreeNodeConnection(node.Parent, node);
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| 378 | using (Pen linePen = new Pen(visualLine.LineColor)) {
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| 379 | linePen.DashStyle = visualLine.DashStyle;
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| 380 | graphics.DrawLine(linePen, connectionPoint, new Point(visualTreeNode.X + visualTreeNode.Width / 2, visualTreeNode.Y));
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| 381 | }
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[6803] | 382 | }
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[3244] | 383 |
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[8986] | 384 | //calculate areas for the subtrees according to their tree size and call drawFunctionTree
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| 385 | Point connectFrom = new Point(visualTreeNode.X + visualTreeNode.Width / 2, visualTreeNode.Y + visualTreeNode.Height);
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| 386 | int[] xBoundaries = new int[node.SubtreeCount + 1];
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| 387 | xBoundaries[0] = x;
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| 388 | for (int i = 0; i < node.SubtreeCount; i++) {
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| 389 | xBoundaries[i + 1] = (int)(xBoundaries[i] + (width * (double)node.GetSubtree(i).GetLength()) / (node.GetLength() - 1));
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| 390 | DrawFunctionTree(node.GetSubtree(i), graphics, xBoundaries[i], y + height, xBoundaries[i + 1] - xBoundaries[i], height, connectFrom);
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| 391 | }
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[3244] | 392 | }
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| 393 | }
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[8980] | 394 |
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| 395 | protected void DrawTreeNode(VisualSymbolicExpressionTreeNode visualTreeNode) {
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| 396 | using (var graphics = Graphics.FromImage(image)) {
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| 397 | graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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| 398 | graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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| 399 | DrawTreeNode(graphics, visualTreeNode);
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| 400 | }
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| 401 | }
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| 402 |
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| 403 | protected void DrawTreeNode(Graphics graphics, VisualSymbolicExpressionTreeNode visualTreeNode) {
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| 404 | graphics.Clip = new Region(new Rectangle(visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width + 1, visualTreeNode.Height + 1));
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| 405 | graphics.Clear(backgroundColor);
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| 406 | var node = visualTreeNode.SymbolicExpressionTreeNode;
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[8986] | 407 | using (var textBrush = new SolidBrush(visualTreeNode.TextColor))
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| 408 | using (var nodeLinePen = new Pen(visualTreeNode.LineColor))
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| 409 | using (var nodeFillBrush = new SolidBrush(visualTreeNode.FillColor)) {
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| 410 | //draw terminal node
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| 411 | if (node.SubtreeCount == 0) {
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| 412 | graphics.FillRectangle(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 413 | graphics.DrawRectangle(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 414 | } else {
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| 415 | graphics.FillEllipse(nodeFillBrush, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
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| 416 | graphics.DrawEllipse(nodeLinePen, visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height);
|
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| 417 | }
|
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| 418 | //draw name of symbol
|
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| 419 | var text = node.ToString();
|
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| 420 | graphics.DrawString(text, textFont, textBrush, new RectangleF(visualTreeNode.X, visualTreeNode.Y, visualTreeNode.Width, visualTreeNode.Height), stringFormat);
|
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[8980] | 421 | }
|
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| 422 | }
|
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[3244] | 423 | #endregion
|
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[4651] | 424 | #region save image
|
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| 425 | private void saveImageToolStripMenuItem_Click(object sender, EventArgs e) {
|
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| 426 | if (saveFileDialog.ShowDialog() == DialogResult.OK) {
|
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| 427 | string filename = saveFileDialog.FileName.ToLower();
|
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| 428 | if (filename.EndsWith("bmp")) SaveImageAsBitmap(filename);
|
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| 429 | else if (filename.EndsWith("emf")) SaveImageAsEmf(filename);
|
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| 430 | else SaveImageAsBitmap(filename);
|
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| 431 | }
|
---|
| 432 | }
|
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| 433 |
|
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[9587] | 434 | public void SaveImageAsBitmap(string filename) {
|
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[4651] | 435 | if (tree == null) return;
|
---|
| 436 | Image image = new Bitmap(Width, Height);
|
---|
| 437 | using (Graphics g = Graphics.FromImage(image)) {
|
---|
[5549] | 438 | int height = this.Height / tree.Depth;
|
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[4651] | 439 | DrawFunctionTree(tree, g, 0, 0, Width, height);
|
---|
| 440 | }
|
---|
| 441 | image.Save(filename);
|
---|
| 442 | }
|
---|
| 443 |
|
---|
[9587] | 444 | public void SaveImageAsEmf(string filename) {
|
---|
[4651] | 445 | if (tree == null) return;
|
---|
| 446 | using (Graphics g = CreateGraphics()) {
|
---|
| 447 | using (Metafile file = new Metafile(filename, g.GetHdc())) {
|
---|
| 448 | using (Graphics emfFile = Graphics.FromImage(file)) {
|
---|
[5549] | 449 | int height = this.Height / tree.Depth;
|
---|
[4651] | 450 | DrawFunctionTree(tree, emfFile, 0, 0, Width, height);
|
---|
| 451 | }
|
---|
| 452 | }
|
---|
| 453 | g.ReleaseHdc();
|
---|
| 454 | }
|
---|
| 455 | }
|
---|
| 456 | #endregion
|
---|
[3244] | 457 | }
|
---|
| 458 | }
|
---|