A game about forced loneliness, made by TACStudios
1using System;
2using System.Runtime.InteropServices;
3using UnityEngine.InputSystem.Utilities;
4
5namespace UnityEngine.InputSystem.LowLevel
6{
7 /// <summary>
8 /// A single character text input event.
9 /// </summary>
10 /// <remarks>
11 /// Text input does not fit the control-based input model well and thus is
12 /// represented as its own form of input. A device that is capable of receiving
13 /// text input (such as <see cref="Keyboard"/>) receives text input events
14 /// and should implement <see cref="ITextInputReceiver"/> in order for the
15 /// input system to be able to relay these events to the device.
16 /// </remarks>
17 [StructLayout(LayoutKind.Explicit, Size = InputEvent.kBaseEventSize + 4)]
18 public struct TextEvent : IInputEventTypeInfo
19 {
20 public const int Type = 0x54455854;
21
22 [FieldOffset(0)]
23 public InputEvent baseEvent;
24
25 /// <summary>
26 /// Character in UTF-32 encoding.
27 /// </summary>
28 [FieldOffset(InputEvent.kBaseEventSize)]
29 public int character;
30
31 public FourCC typeStatic => Type;
32
33 public static unsafe TextEvent* From(InputEventPtr eventPtr)
34 {
35 if (!eventPtr.valid)
36 throw new ArgumentNullException(nameof(eventPtr));
37 if (!eventPtr.IsA<TextEvent>())
38 throw new InvalidCastException(string.Format("Cannot cast event with type '{0}' into TextEvent",
39 eventPtr.type));
40
41 return (TextEvent*)eventPtr.data;
42 }
43
44 public static TextEvent Create(int deviceId, char character, double time = -1)
45 {
46 ////TODO: detect and throw when if character is surrogate
47 var inputEvent = new TextEvent
48 {
49 baseEvent = new InputEvent(Type, InputEvent.kBaseEventSize + 4, deviceId, time),
50 character = character
51 };
52 return inputEvent;
53 }
54
55 public static TextEvent Create(int deviceId, int character, double time = -1)
56 {
57 var inputEvent = new TextEvent
58 {
59 baseEvent = new InputEvent(Type, InputEvent.kBaseEventSize + 4, deviceId, time),
60 character = character
61 };
62 return inputEvent;
63 }
64 }
65}