1  namespace Ryujinx.Input.Assigner
 2  {
 3      /// <summary>
 4      /// <see cref="IButtonAssigner"/> implementation for <see cref="IKeyboard"/>.
 5      /// </summary>
 6      public class KeyboardKeyAssigner : IButtonAssigner
 7      {
 8          private readonly IKeyboard _keyboard;
 9  
10          private KeyboardStateSnapshot _keyboardState;
11  
12          public KeyboardKeyAssigner(IKeyboard keyboard)
13          {
14              _keyboard = keyboard;
15          }
16  
17          public void Initialize() { }
18  
19          public void ReadInput()
20          {
21              _keyboardState = _keyboard.GetKeyboardStateSnapshot();
22          }
23  
24          public bool IsAnyButtonPressed()
25          {
26              return GetPressedButton() is not null;
27          }
28  
29          public bool ShouldCancel()
30          {
31              return _keyboardState.IsPressed(Key.Escape);
32          }
33  
34          public Button? GetPressedButton()
35          {
36              Button? keyPressed = null;
37  
38              for (Key key = Key.Unknown; key < Key.Count; key++)
39              {
40                  if (_keyboardState.IsPressed(key))
41                  {
42                      keyPressed = new(key);
43                      break;
44                  }
45              }
46  
47              return !ShouldCancel() ? keyPressed : null;
48          }
49      }
50  }