66 lines
2.2 KiB
C#
66 lines
2.2 KiB
C#
using System;
|
|
using System.Runtime.InteropServices;
|
|
using UnityEngine.InputSystem.Utilities;
|
|
|
|
namespace UnityEngine.InputSystem.LowLevel
|
|
{
|
|
/// <summary>
|
|
/// A single character text input event.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Text input does not fit the control-based input model well and thus is
|
|
/// represented as its own form of input. A device that is capable of receiving
|
|
/// text input (such as <see cref="Keyboard"/>) receives text input events
|
|
/// and should implement <see cref="ITextInputReceiver"/> in order for the
|
|
/// input system to be able to relay these events to the device.
|
|
/// </remarks>
|
|
[StructLayout(LayoutKind.Explicit, Size = InputEvent.kBaseEventSize + 4)]
|
|
public struct TextEvent : IInputEventTypeInfo
|
|
{
|
|
public const int Type = 0x54455854;
|
|
|
|
[FieldOffset(0)]
|
|
public InputEvent baseEvent;
|
|
|
|
/// <summary>
|
|
/// Character in UTF-32 encoding.
|
|
/// </summary>
|
|
[FieldOffset(InputEvent.kBaseEventSize)]
|
|
public int character;
|
|
|
|
public FourCC typeStatic => Type;
|
|
|
|
public static unsafe TextEvent* From(InputEventPtr eventPtr)
|
|
{
|
|
if (!eventPtr.valid)
|
|
throw new ArgumentNullException(nameof(eventPtr));
|
|
if (!eventPtr.IsA<TextEvent>())
|
|
throw new InvalidCastException(string.Format("Cannot cast event with type '{0}' into TextEvent",
|
|
eventPtr.type));
|
|
|
|
return (TextEvent*)eventPtr.data;
|
|
}
|
|
|
|
public static TextEvent Create(int deviceId, char character, double time = -1)
|
|
{
|
|
////TODO: detect and throw when if character is surrogate
|
|
var inputEvent = new TextEvent
|
|
{
|
|
baseEvent = new InputEvent(Type, InputEvent.kBaseEventSize + 4, deviceId, time),
|
|
character = character
|
|
};
|
|
return inputEvent;
|
|
}
|
|
|
|
public static TextEvent Create(int deviceId, int character, double time = -1)
|
|
{
|
|
var inputEvent = new TextEvent
|
|
{
|
|
baseEvent = new InputEvent(Type, InputEvent.kBaseEventSize + 4, deviceId, time),
|
|
character = character
|
|
};
|
|
return inputEvent;
|
|
}
|
|
}
|
|
}
|