Initialize keyboards from libinput

backend/libinput/events.c

@@ -0,0 +1,100 @@
+#include <stdlib.h>
+#include <assert.h>
+#include <libinput.h>
+#include <wlr/session.h>
+#include <wlr/types.h>
+#include <wlr/common/list.h>
+#include "backend/libinput/backend.h"
+#include "common/log.h"
+#include "types.h"
+
+static void wlr_libinput_keyboard_destroy(struct wlr_keyboard_state *state) {
+	free(state);
+}
+
+static struct wlr_keyboard_impl keyboard_impl = {
+	.destroy = wlr_libinput_keyboard_destroy
+};
+
+static struct wlr_keyboard *wlr_libinput_keyboard_create(
+		struct libinput_device *device) {
+	assert(device);
+	struct wlr_keyboard_state *kbstate =
+		calloc(1, sizeof(struct wlr_keyboard_state));
+	kbstate->handle = device;
+	return wlr_keyboard_create(&keyboard_impl, kbstate);
+}
+
+static void device_added(struct wlr_backend_state *state,
+		struct libinput_device *device) {
+	assert(state && device);
+	/*
+	 * Note: the wlr API exposes only devices with a single capability, because
+	 * that meshes better with how Wayland does things and is a bit simpler.
+	 * However, libinput devices often have multiple capabilities - in such
+	 * cases we have to create several devices.
+	 */
+	int vendor = libinput_device_get_id_vendor(device);
+	int product = libinput_device_get_id_product(device);
+	const char *name = libinput_device_get_name(device);
+	list_t *devices = list_create();
+	wlr_log(L_DEBUG, "Added %s [%d:%d]", name, vendor, product);
+
+	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_KEYBOARD)) {
+		struct wlr_input_device *wlr_device = wlr_input_device_create(
+			WLR_INPUT_DEVICE_KEYBOARD, name, vendor, product);
+		wlr_device->keyboard = wlr_libinput_keyboard_create(device);
+		wl_signal_emit(&state->backend->events.input_add, wlr_device);
+		list_add(devices, wlr_device);
+	}
+	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_POINTER)) {
+		// TODO
+	}
+	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_TOUCH)) {
+		// TODO
+	}
+	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_TABLET_TOOL)) {
+		// TODO
+	}
+	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_TABLET_PAD)) {
+		// TODO
+	}
+	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_GESTURE)) {
+		// TODO
+	}
+	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_SWITCH)) {
+		// TODO
+	}
+
+	if (devices->length > 0) {
+		libinput_device_set_user_data(device, devices);
+	} else {
+		list_free(devices);
+	}
+}
+
+static void device_removed(struct wlr_backend_state *state,
+		struct libinput_device *device) {
+	wlr_log(L_DEBUG, "libinput device removed");
+	// TODO
+}
+
+void wlr_libinput_event(struct wlr_backend_state *state,
+		struct libinput_event *event) {
+	assert(state && event);
+	struct libinput *context = libinput_event_get_context(event);
+	struct libinput_device *device = libinput_event_get_device(event);
+	enum libinput_event_type event_type = libinput_event_get_type(event);
+	(void)context;
+	switch (event_type) {
+	case LIBINPUT_EVENT_DEVICE_ADDED:
+		device_added(state, device);
+		break;
+	case LIBINPUT_EVENT_DEVICE_REMOVED:
+		device_removed(state, device);
+		break;
+	default:
+		wlr_log(L_DEBUG, "Unknown libinput event %d", event_type);
+		break;
+	}
+}