1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2018 Joseph Helm and Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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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.Windows;
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24 | using System.Windows.Media;
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25 | using HeuristicLab.Problems.BinPacking2D;
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26 | using Point = System.Windows.Point;
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27 | using Size = System.Windows.Size;
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28 | using UserControl = System.Windows.Controls.UserControl;
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29 |
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30 | namespace HeuristicLab.Problems.BinPacking.Views {
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31 | public partial class Container2DView : UserControl {
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32 | private int selectedItemKey;
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33 | private Size renderSize;
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34 | private BinPacking<BinPacking2D.PackingPosition, PackingShape, PackingItem> packing;
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35 | public BinPacking<BinPacking2D.PackingPosition, PackingShape, PackingItem> Packing {
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36 | get { return packing; }
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37 | set {
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38 | if (packing != value) {
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39 | this.packing = value;
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40 | ClearSelection(); // also updates visualization
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41 | }
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42 | }
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43 | }
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44 |
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45 | public Container2DView() {
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46 | InitializeComponent();
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47 | }
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48 |
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49 |
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50 | protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo) {
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51 | base.OnRenderSizeChanged(sizeInfo);
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52 | var s = Math.Min(sizeInfo.NewSize.Height, sizeInfo.NewSize.Width);
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53 | renderSize = new Size(s, s);
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54 | InvalidateVisual();
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55 | }
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56 |
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57 | // similar implementation to Container3DView (even though item selection is not supported for 2d packings TODO)
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58 | public void SelectItem(int itemKey) {
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59 | // selection of an item should make all other items semi-transparent
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60 | selectedItemKey = itemKey;
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61 | InvalidateVisual();
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62 | }
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63 | public void ClearSelection() {
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64 | // remove all transparency
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65 | selectedItemKey = -1;
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66 | InvalidateVisual();
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67 | }
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68 |
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69 | protected override void OnRender(DrawingContext drawingContext) {
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70 | base.OnRender(drawingContext);
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71 | if (packing == null) return;
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72 | // the container should fill the whole size
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73 | var scalingX = renderSize.Width / Packing.BinShape.Width;
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74 | var scalingY = renderSize.Height / Packing.BinShape.Width;
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75 | // draw container
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76 | drawingContext.DrawRectangle(Brushes.LightGray, new Pen(Brushes.Black, 1), new Rect(new Point(0, 0), renderSize));
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77 |
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78 | var selectedBrush = Brushes.MediumSeaGreen;
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79 | var unselectedBrush = selectedItemKey < 0 ? selectedBrush : Brushes.DarkGray;
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80 |
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81 | foreach (var t in Packing.Items) {
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82 | var key = t.Key;
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83 | var item = t.Value;
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84 | var pos = Packing.Positions[key];
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85 |
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86 | var scaledPos = new Point(pos.X * scalingX, pos.Y * scalingY);
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87 |
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88 | var scaledSize = pos.Rotated ?
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89 | new Size(item.Height * scalingX, item.Width * scalingY) :
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90 | new Size(item.Width * scalingX, item.Height * scalingY);
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91 |
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92 | var brush = key == selectedItemKey ? selectedBrush : unselectedBrush;
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93 | drawingContext.DrawRectangle(brush, new Pen(Brushes.Black, 1), new Rect(scaledPos, scaledSize));
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94 | }
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95 | }
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96 | }
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97 | }
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