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 Windows.Foundation;
 6  
 7  namespace Peek.UI.Extensions
 8  {
 9      public static class SizeExtensions
10      {
11          public static Size Fit(this Size sizeToFit, Size maxSize, Size minSize)
12          {
13              double fittedWidth = sizeToFit.Width;
14              double fittedHeight = sizeToFit.Height;
15  
16              double ratioWidth = sizeToFit.Width / maxSize.Width;
17              double ratioHeight = sizeToFit.Height / maxSize.Height;
18  
19              if (ratioWidth > ratioHeight)
20              {
21                  if (ratioWidth > 1)
22                  {
23                      fittedWidth = maxSize.Width;
24                      fittedHeight = sizeToFit.Height / ratioWidth;
25                  }
26              }
27              else
28              {
29                  if (ratioHeight > 1)
30                  {
31                      fittedWidth = sizeToFit.Width / ratioHeight;
32                      fittedHeight = maxSize.Height;
33                  }
34              }
35  
36              if (fittedWidth < minSize.Width)
37              {
38                  fittedWidth = minSize.Width;
39              }
40  
41              if (fittedHeight < minSize.Height)
42              {
43                  fittedHeight = minSize.Height;
44              }
45  
46              return new Size(fittedWidth, fittedHeight);
47          }
48      }
49  }