[3467] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7268] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3467] | 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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[4068] | 23 | using System.Collections.Generic;
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[3467] | 24 | using System.Drawing;
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| 25 | using System.Windows.Forms;
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| 26 | using HeuristicLab.MainForm;
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| 27 |
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| 28 | namespace HeuristicLab.Problems.Knapsack.Views {
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| 29 | /// <summary>
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[4513] | 30 | /// A view for a Knapsack solution.
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[3467] | 31 | /// </summary>
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| 32 | [View("Knapsack View")]
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| 33 | [Content(typeof(KnapsackSolution), true)]
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| 34 | public partial class KnapsackSolutionView : HeuristicLab.Core.Views.ItemView {
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| 35 | public new KnapsackSolution Content {
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| 36 | get { return (KnapsackSolution)base.Content; }
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| 37 | set { base.Content = value; }
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| 38 | }
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[3904] | 39 |
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[3467] | 40 | public KnapsackSolutionView() {
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| 41 | InitializeComponent();
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| 42 | }
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| 43 |
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| 44 | protected override void DeregisterContentEvents() {
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| 45 | Content.BinaryVectorChanged -= new EventHandler(Content_BinaryVectorChanged);
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| 46 | Content.CapacityChanged -= new EventHandler(Content_CapacityChanged);
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| 47 | Content.WeightsChanged -= new EventHandler(Content_WeightsChanged);
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| 48 | Content.ValuesChanged -= new EventHandler(Content_ValuesChanged);
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[3649] | 49 | Content.QualityChanged -= new EventHandler(Content_QualityChanged);
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[3467] | 50 | base.DeregisterContentEvents();
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| 51 | }
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| 52 |
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| 53 | protected override void RegisterContentEvents() {
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| 54 | base.RegisterContentEvents();
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| 55 | Content.BinaryVectorChanged += new EventHandler(Content_BinaryVectorChanged);
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| 56 | Content.CapacityChanged += new EventHandler(Content_CapacityChanged);
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| 57 | Content.WeightsChanged += new EventHandler(Content_WeightsChanged);
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| 58 | Content.ValuesChanged += new EventHandler(Content_ValuesChanged);
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[3649] | 59 | Content.QualityChanged += new EventHandler(Content_QualityChanged);
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[3467] | 60 | }
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| 61 |
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[3904] | 62 | private void Content_BinaryVectorChanged(object sender, EventArgs e) {
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[3467] | 63 | if (InvokeRequired)
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| 64 | Invoke(new EventHandler(Content_BinaryVectorChanged), sender, e);
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| 65 | else
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| 66 | GenerateImage();
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| 67 | }
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| 68 |
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[3904] | 69 | private void Content_QualityChanged(object sender, EventArgs e) {
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[3649] | 70 | if (InvokeRequired)
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| 71 | Invoke(new EventHandler(Content_QualityChanged), sender, e);
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| 72 | else
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| 73 | GenerateImage();
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| 74 | }
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| 75 |
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[3904] | 76 | private void Content_CapacityChanged(object sender, EventArgs e) {
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[3467] | 77 | if (InvokeRequired)
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| 78 | Invoke(new EventHandler(Content_CapacityChanged), sender, e);
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| 79 | else
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| 80 | GenerateImage();
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| 81 | }
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| 82 |
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[3904] | 83 | private void Content_WeightsChanged(object sender, EventArgs e) {
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[3467] | 84 | if (InvokeRequired)
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| 85 | Invoke(new EventHandler(Content_WeightsChanged), sender, e);
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| 86 | else
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| 87 | GenerateImage();
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| 88 | }
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| 89 |
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[3904] | 90 | private void Content_ValuesChanged(object sender, EventArgs e) {
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[3467] | 91 | if (InvokeRequired)
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| 92 | Invoke(new EventHandler(Content_ValuesChanged), sender, e);
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| 93 | else
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| 94 | GenerateImage();
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| 95 | }
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| 96 |
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| 97 | protected override void OnContentChanged() {
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| 98 | base.OnContentChanged();
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[3904] | 99 | if (Content == null)
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[3467] | 100 | pictureBox.Image = null;
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[3904] | 101 | else
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[3467] | 102 | GenerateImage();
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| 103 | }
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| 104 |
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[3904] | 105 | protected override void SetEnabledStateOfControls() {
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| 106 | base.SetEnabledStateOfControls();
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[3467] | 107 | pictureBox.Enabled = Content != null;
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| 108 | }
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| 109 |
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| 110 | private void GenerateImage() {
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| 111 | if ((pictureBox.Width > 0) && (pictureBox.Height > 0)) {
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| 112 | if (Content == null) {
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| 113 | pictureBox.Image = null;
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| 114 | } else {
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| 115 | Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
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| 116 | using (Graphics graphics = Graphics.FromImage(bitmap)) {
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| 117 | int border = 10;
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| 118 |
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| 119 | int borderX = border;
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| 120 | if (pictureBox.Width - border * 2 < 0)
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| 121 | borderX = 0;
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| 122 | int width = pictureBox.Width - borderX * 2;
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| 123 |
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| 124 | int borderY = border;
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| 125 | if (pictureBox.Height - border * 2 < 0)
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| 126 | borderY = 0;
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| 127 | int height = pictureBox.Height - borderY * 2;
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| 128 |
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| 129 | //preprocess
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| 130 | double capacity = Content.Capacity.Value;
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| 131 |
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| 132 | if (capacity != 0) {
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| 133 | double packedCapacity = 0;
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| 134 | double maxValue = 0;
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| 135 | for (int i = 0; i < Content.BinaryVector.Length; i++) {
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| 136 | if (Content.BinaryVector[i]) {
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| 137 | packedCapacity += Content.Weights[i];
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| 138 | }
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| 139 |
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| 140 | if (Content.Values[i] > maxValue)
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| 141 | maxValue = Content.Values[i];
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| 142 | }
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| 143 |
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| 144 | int knapsackHeight = height;
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| 145 | if (packedCapacity > capacity) {
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| 146 | knapsackHeight = (int)Math.Round(capacity / packedCapacity * (double)height);
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| 147 | }
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| 148 |
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| 149 | //draw knapsack
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[3540] | 150 | using (Pen pen = new Pen(Color.Black, 2)) {
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| 151 | graphics.DrawRectangle(pen,
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| 152 | borderX - 2, pictureBox.Height - borderY - knapsackHeight - 2, width + 4, knapsackHeight + 4);
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| 153 | }
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[3467] | 154 |
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| 155 | //draw items sorted by value
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| 156 | List<int> sortedIndices = new List<int>();
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| 157 | for (int i = 0; i < Content.BinaryVector.Length; i++) {
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[3904] | 158 | if (Content.BinaryVector[i]) {
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[3467] | 159 | sortedIndices.Add(i);
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| 160 | }
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| 161 | }
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| 162 |
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| 163 | sortedIndices.Sort(
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| 164 | delegate(int i, int j) {
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| 165 | if (Content.Values[i] < Content.Values[j])
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| 166 | return -1;
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| 167 | else if (Content.Values[i] > Content.Values[j])
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| 168 | return 1;
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| 169 | else
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| 170 | return 0;
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| 171 | });
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| 172 |
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| 173 | int currentPosition = pictureBox.Height - borderY;
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| 174 | foreach (int i in sortedIndices) {
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| 175 | if (Content.BinaryVector[i]) {
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[3904] | 176 |
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[3467] | 177 | double weight = Content.Weights[i];
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| 178 | double factor = weight / capacity;
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[3537] | 179 | int elementHeight = (int)Math.Floor(knapsackHeight * factor);
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[3467] | 180 |
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| 181 | double value = Content.Values[i];
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| 182 | //color according to value
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| 183 | int colorValue = 0;
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| 184 | if (value != 0)
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| 185 | colorValue = (int)Math.Round(255.0 * value / maxValue);
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| 186 | Color color = Color.FromArgb(
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| 187 | 0, 0, colorValue);
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| 188 |
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| 189 | using (Brush brush = new SolidBrush(color)) {
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| 190 | graphics.FillRectangle(brush,
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| 191 | borderX, currentPosition - elementHeight, width, elementHeight);
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| 192 | }
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| 193 | graphics.DrawRectangle(Pens.White,
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| 194 | borderX, currentPosition - elementHeight, width, elementHeight);
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| 195 |
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| 196 | currentPosition -= elementHeight;
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| 197 | }
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| 198 | }
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| 199 | }
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| 200 | }
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| 201 | pictureBox.Image = bitmap;
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| 202 | }
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| 203 | }
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| 204 | }
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| 205 |
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| 206 | private void pictureBox_SizeChanged(object sender, EventArgs e) {
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| 207 | GenerateImage();
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| 208 | }
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| 209 | }
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| 210 | }
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