libinput-dotnet 1.30.4

libinput-dotnet

.NET bindings for libinput

Usage

using Libinput;
using Udev;

using var udev = new UdevContext();
using var context = LibinputContext.CreateUdevContext(udev);
context.AssignSeat("seat0");

while (true)
{
    context.Dispatch();
    foreach (var ev in context.Events())
    {
        using (ev)
        {
            switch (ev)
            {
                case LibinputKeyboardEvent key:
                    Console.WriteLine($"key {key.Key} {key.KeyState}");
                    break;
                case LibinputPointerMotionEvent motion:
                    Console.WriteLine($"motion {motion.Dx}/{motion.Dy}");
                    break;
            }
        }
    }

    context.Wait(); // poll(2) on context.Fd
}

Or manage devices explicitly with the path backend:

using var context = LibinputContext.CreatePathContext();
using var device = context.AddDevice("/dev/input/event3");
device.Config.Tap.Enabled = true;

The context is poll-style and never starts threads; integrate context.Fd into any event loop and call Dispatch when it is readable.

Permissions

libinput opens evdev nodes through an open/close callback pair so that access can be routed through a seat manager. By default the binding uses LibinputDirectInterface, which calls open(2) directly and requires permission on /dev/input/event* (root, the input group, or a udev rule). To integrate with systemd-logind or seatd instead, implement ILibinputInterface and pass it to the context factory.

Requirements

• libinput.so.10 (libinput ≥ 1.21; the wrapper targets 1.30) installed via your distribution.
• libudev.so.1 for the udev backend.

Building

dotnet build                       # solution: Libinput.NET.slnx
dotnet test                        # needs libinput.so.10; uinput for the integration tests
dotnet run --project samples/Libinput.NET.Sample            # watch seat0
dotnet run --project samples/Libinput.NET.Sample -- /dev/input/event3

The integration tests create virtual devices through /dev/uinput and inject real events; they skip when /dev/uinput or the created nodes are not accessible.

Regenerating the native bindings

src/Libinput.NET/Native/Generated/** is checked in, so consumers never need clang. To regenerate after bumping the external/libinput submodule:

git submodule update --init
dotnet tool restore
sh eng/generate.sh