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.Globalization;
 6  using System.Windows.Threading;
 7  
 8  using Common.UI;
 9  using Microsoft.PowerToys.Telemetry;
10  using PowerToys.Interop;
11  
12  namespace Microsoft.PowerToys.PreviewHandler.Qoi
13  {
14      internal static class Program
15      {
16          private static CancellationTokenSource _tokenSource = new CancellationTokenSource();
17  
18          private static QoiPreviewHandlerControl _previewHandlerControl;
19  
20          /// <summary>
21          ///  The main entry point for the application.
22          /// </summary>
23          [STAThread]
24          public static void Main(string[] args)
25          {
26              ApplicationConfiguration.Initialize();
27              if (args != null)
28              {
29                  if (args.Length == 6)
30                  {
31                      ETWTrace etwTrace = new ETWTrace(Path.Combine(Environment.GetEnvironmentVariable("USERPROFILE"), "AppData", "LocalLow", "Microsoft", "PowerToys", "etw"));
32  
33                      string filePath = args[0];
34                      IntPtr hwnd = IntPtr.Parse(args[1], NumberStyles.HexNumber, CultureInfo.InvariantCulture);
35  
36                      int left = Convert.ToInt32(args[2], 10);
37                      int right = Convert.ToInt32(args[3], 10);
38                      int top = Convert.ToInt32(args[4], 10);
39                      int bottom = Convert.ToInt32(args[5], 10);
40                      Rectangle s = new Rectangle(left, top, right - left, bottom - top);
41  
42                      _previewHandlerControl = new QoiPreviewHandlerControl();
43  
44                      if (!_previewHandlerControl.SetWindow(hwnd, s))
45                      {
46                          return;
47                      }
48  
49                      _previewHandlerControl.DoPreview(filePath);
50  
51                      NativeEventWaiter.WaitForEventLoop(
52                          Constants.QoiPreviewResizeEvent(),
53                          () =>
54                          {
55                              Rectangle s = default;
56                              if (!_previewHandlerControl.SetRect(s))
57                              {
58                                  etwTrace?.Dispose();
59  
60                                  // When the parent HWND became invalid, the application won't respond to Application.Exit().
61                                  Environment.Exit(0);
62                              }
63                          },
64                          Dispatcher.CurrentDispatcher,
65                          _tokenSource.Token);
66  
67                      etwTrace?.Dispose();
68                  }
69                  else
70                  {
71                      MessageBox.Show("Wrong number of args: " + args.Length.ToString(CultureInfo.InvariantCulture));
72                  }
73              }
74  
75              // To customize application configuration such as set high DPI settings or default font,
76              // see https://aka.ms/applicationconfiguration.
77              Application.Run();
78          }
79      }
80  }