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source: trunk/sources/HeuristicLab.Problems.BinPacking.Views/3.3/Container2DView.xaml.cs @ 14163

Last change on this file since 14163 was 14162, checked in by gkronber, 8 years ago

#2641: first import of bin packing problem (TODO: persistence and sample)

File size: 3.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 Joseph Helm and 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.Windows;
24using System.Windows.Media;
25using HeuristicLab.Problems.BinPacking2D;
26using Point = System.Windows.Point;
27using Size = System.Windows.Size;
28using UserControl = System.Windows.Controls.UserControl;
29
30namespace HeuristicLab.Problems.BinPacking.Views {
31  public partial class Container2DView : UserControl {
32    private int selectedItemKey;
33    private Size renderSize;
34    private BinPacking<BinPacking2D.PackingPosition, PackingShape, PackingItem> packing;
35    public BinPacking<BinPacking2D.PackingPosition, PackingShape, PackingItem> Packing {
36      get { return packing; }
37      set {
38        if (packing != value) {
39          this.packing = value;
40          ClearSelection(); // also updates visualization
41        }
42      }
43    }
44
45    public Container2DView() {
46      InitializeComponent();
47    }
48
49
50    protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo) {
51      base.OnRenderSizeChanged(sizeInfo);
52      var s = Math.Min(sizeInfo.NewSize.Height, sizeInfo.NewSize.Width);
53      renderSize = new Size(s, s);
54      InvalidateVisual();
55    }
56
57    // similar implementation to Container3DView (even though item selection is not supported for 2d packings TODO)
58    public void SelectItem(int itemKey) {
59      // selection of an item should make all other items semi-transparent
60      selectedItemKey = itemKey;
61      InvalidateVisual();
62    }
63    public void ClearSelection() {
64      // remove all transparency
65      selectedItemKey = -1;
66      InvalidateVisual();
67    }
68
69    protected override void OnRender(DrawingContext drawingContext) {
70      base.OnRender(drawingContext);
71      if (packing == null) return;
72      // the container should fill the whole size
73      var scalingX = renderSize.Width / Packing.BinShape.Width;
74      var scalingY = renderSize.Height / Packing.BinShape.Width;
75      // draw container
76      drawingContext.DrawRectangle(Brushes.LightGray, new Pen(Brushes.Black, 1), new Rect(new Point(0, 0), renderSize));
77
78      var selectedBrush = Brushes.MediumSeaGreen;
79      var unselectedBrush = selectedItemKey < 0 ? selectedBrush : Brushes.DarkGray;
80
81      foreach (var t in Packing.Items) {
82        var key = t.Key;
83        var item = t.Value;
84        var pos = Packing.Positions[key];
85
86        var scaledPos = new Point(pos.X * scalingX, pos.Y * scalingY);
87
88        var scaledSize = pos.Rotated ?
89          new Size(item.Height * scalingX, item.Width * scalingY) :
90          new Size(item.Width * scalingX, item.Height * scalingY);
91
92        var brush = key == selectedItemKey ? selectedBrush : unselectedBrush;
93        drawingContext.DrawRectangle(brush, new Pen(Brushes.Black, 1), new Rect(scaledPos, scaledSize));
94      }
95    }
96  }
97}
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