Free cookie consent management tool by TermsFeed Policy Generator

source: branches/ParameterBinding/HeuristicLab.Problems.TravelingSalesman.Views/3.3/PathTSPTourView.cs @ 9882

Last change on this file since 9882 was 4435, checked in by mkommend, 14 years ago

Adjusted the SetEnabledStateOfControls method in all views, added the Enabled property into the IView interface and adapted the ViewHost, View and ContentView class (ticket #1155).

File size: 5.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Drawing;
24using System.Windows.Forms;
25using HeuristicLab.Core.Views;
26using HeuristicLab.Data;
27using HeuristicLab.Encodings.PermutationEncoding;
28using HeuristicLab.MainForm;
29
30namespace HeuristicLab.Problems.TravelingSalesman.Views {
31  /// <summary>
32  /// The base class for visual representations of a path tour for a TSP.
33  /// </summary>
34  [View("PathTSPTour View")]
35  [Content(typeof(PathTSPTour), true)]
36  public sealed partial class PathTSPTourView : ItemView {
37    public new PathTSPTour Content {
38      get { return (PathTSPTour)base.Content; }
39      set { base.Content = value; }
40    }
41
42    /// <summary>
43    /// Initializes a new instance of <see cref="PathTSPTourView"/>.
44    /// </summary>
45    public PathTSPTourView() {
46      InitializeComponent();
47    }
48
49    protected override void DeregisterContentEvents() {
50      Content.QualityChanged -= new EventHandler(Content_QualityChanged);
51      Content.CoordinatesChanged -= new EventHandler(Content_CoordinatesChanged);
52      Content.PermutationChanged -= new EventHandler(Content_PermutationChanged);
53      base.DeregisterContentEvents();
54    }
55    protected override void RegisterContentEvents() {
56      base.RegisterContentEvents();
57      Content.QualityChanged += new EventHandler(Content_QualityChanged);
58      Content.CoordinatesChanged += new EventHandler(Content_CoordinatesChanged);
59      Content.PermutationChanged += new EventHandler(Content_PermutationChanged);
60    }
61
62    protected override void OnContentChanged() {
63      base.OnContentChanged();
64      if (Content == null) {
65        qualityViewHost.Content = null;
66        pictureBox.Image = null;
67        tourViewHost.Content = null;
68      } else {
69        qualityViewHost.Content = Content.Quality;
70        GenerateImage();
71        tourViewHost.Content = Content.Permutation;
72      }
73    }
74
75    protected override void SetEnabledStateOfControls() {
76      base.SetEnabledStateOfControls();
77      qualityGroupBox.Enabled = Content != null;
78      pictureBox.Enabled = Content != null;
79      tourGroupBox.Enabled = Content != null;
80    }
81
82    private void GenerateImage() {
83      if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
84        if (Content == null) {
85          pictureBox.Image = null;
86        } else {
87          DoubleMatrix coordinates = Content.Coordinates;
88          Permutation permutation = Content.Permutation;
89          Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
90
91          if ((coordinates != null) && (coordinates.Rows > 0) && (coordinates.Columns == 2)) {
92            double xMin = double.MaxValue, yMin = double.MaxValue, xMax = double.MinValue, yMax = double.MinValue;
93            for (int i = 0; i < coordinates.Rows; i++) {
94              if (xMin > coordinates[i, 0]) xMin = coordinates[i, 0];
95              if (yMin > coordinates[i, 1]) yMin = coordinates[i, 1];
96              if (xMax < coordinates[i, 0]) xMax = coordinates[i, 0];
97              if (yMax < coordinates[i, 1]) yMax = coordinates[i, 1];
98            }
99
100            int border = 20;
101            double xStep = xMax != xMin ? (pictureBox.Width - 2 * border) / (xMax - xMin) : 1;
102            double yStep = yMax != yMin ? (pictureBox.Height - 2 * border) / (yMax - yMin) : 1;
103
104            Point[] points = new Point[coordinates.Rows];
105            for (int i = 0; i < coordinates.Rows; i++)
106              points[i] = new Point(border + ((int)((coordinates[i, 0] - xMin) * xStep)),
107                                    bitmap.Height - (border + ((int)((coordinates[i, 1] - yMin) * yStep))));
108
109            using (Graphics graphics = Graphics.FromImage(bitmap)) {
110              if ((permutation != null) && (permutation.Length == coordinates.Rows) && (permutation.Validate())) {
111                Point[] tour = new Point[permutation.Length];
112                for (int i = 0; i < permutation.Length; i++) {
113                  tour[i] = points[permutation[i]];
114                }
115                graphics.DrawPolygon(Pens.Black, tour);
116              }
117              for (int i = 0; i < points.Length; i++)
118                graphics.FillRectangle(Brushes.Red, points[i].X - 2, points[i].Y - 2, 6, 6);
119            }
120          }
121          pictureBox.Image = bitmap;
122        }
123      }
124    }
125
126    private void Content_QualityChanged(object sender, EventArgs e) {
127      if (InvokeRequired)
128        Invoke(new EventHandler(Content_QualityChanged), sender, e);
129      else
130        qualityViewHost.Content = Content.Quality;
131    }
132    private void Content_CoordinatesChanged(object sender, EventArgs e) {
133      if (InvokeRequired)
134        Invoke(new EventHandler(Content_CoordinatesChanged), sender, e);
135      else
136        GenerateImage();
137    }
138    private void Content_PermutationChanged(object sender, EventArgs e) {
139      if (InvokeRequired)
140        Invoke(new EventHandler(Content_PermutationChanged), sender, e);
141      else {
142        GenerateImage();
143        tourViewHost.Content = Content.Permutation;
144      }
145    }
146
147    private void pictureBox_SizeChanged(object sender, EventArgs e) {
148      GenerateImage();
149    }
150  }
151}
Note: See TracBrowser for help on using the repository browser.