1  // Copyright (c) Microsoft Corporation
 2  // The Microsoft Corporation licenses this file to you under the MIT license.
 3  // See the LICENSE file in the project root for more information.
 4  
 5  using System;
 6  using System.Drawing;
 7  using System.IO;
 8  
 9  namespace Microsoft.PowerToys.FilePreviewCommon
10  {
11      /// <summary>
12      /// Represents a gcode thumbnail.
13      /// </summary>
14      public class GcodeThumbnail
15      {
16          /// <summary>
17          /// Gets the gcode thumbnail image format.
18          /// </summary>
19          public GcodeThumbnailFormat Format { get; }
20  
21          /// <summary>
22          /// Gets the gcode thumbnail image data in base64.
23          /// </summary>
24          public string Data { get; }
25  
26          /// <summary>
27          /// Initializes a new instance of the <see cref="GcodeThumbnail"/> class.
28          /// </summary>
29          /// <param name="format">The gcode thumbnail image format.</param>
30          /// <param name="data">The gcode thumbnail image data in base64.</param>
31          public GcodeThumbnail(GcodeThumbnailFormat format, string data)
32          {
33              Format = format;
34              Data = data;
35          }
36  
37          /// <summary>
38          /// Gets a <see cref="Bitmap"/> representing this thumbnail.
39          /// </summary>
40          /// <returns>A <see cref="Bitmap"/> representing this thumbnail.</returns>
41          public Bitmap? GetBitmap()
42          {
43              switch (Format)
44              {
45                  case GcodeThumbnailFormat.JPG:
46                  case GcodeThumbnailFormat.PNG:
47                      return BitmapFromBase64String();
48  
49                  case GcodeThumbnailFormat.QOI:
50                      return BitmapFromQoiBase64String();
51  
52                  default:
53                      return null;
54              }
55          }
56  
57          private Bitmap BitmapFromBase64String()
58          {
59              var bitmapBytes = Convert.FromBase64String(Data);
60  
61              return new Bitmap(new MemoryStream(bitmapBytes));
62          }
63  
64          private Bitmap BitmapFromQoiBase64String()
65          {
66              var bitmapBytes = Convert.FromBase64String(Data);
67  
68              return QoiImage.FromStream(new MemoryStream(bitmapBytes));
69          }
70      }
71  }