backend/wayland: Bind seat listener to wlr_wl_seat

backend/wayland/backend.c

@@ -164,8 +164,7 @@ static bool backend_start(struct wlr_backend *backend) {
 		}
 
 		if (wl->tablet_manager) {
-			wl_add_tablet_seat(wl->tablet_manager,
-				seat->wl_seat, wl);
+			wl_add_tablet_seat(wl->tablet_manager, seat);
 		}
 	}
 

backend/wayland/seat.c

@@ -380,8 +380,9 @@ bool create_wl_seat(struct wl_seat *wl_seat, struct wlr_wl_backend *wl) {
 		return false;
 	}
 	seat->wl_seat = wl_seat;
+	seat->backend = wl;
 	wl->seat = seat;
-	wl_seat_add_listener(wl_seat, &seat_listener, wl);
+	wl_seat_add_listener(wl_seat, &seat_listener, seat);
 	return true;
 }
 
@@ -408,11 +409,6 @@ void destroy_wl_seats(struct wlr_wl_backend *wl) {
 	free(seat);
 }
 
-static struct wlr_wl_seat *backend_get_seat(struct wlr_wl_backend *backend, struct wl_seat *wl_seat) {
-	assert(backend->seat && backend->seat->wl_seat == wl_seat);
-	return backend->seat;
-}
-
 static struct wlr_wl_seat *input_device_get_seat(struct wlr_input_device *wlr_dev) {
 	struct wlr_wl_input_device *dev =
 		get_wl_input_device_from_input_device(wlr_dev);
@@ -726,8 +722,8 @@ void create_wl_touch(struct wl_touch *wl_touch, struct wlr_wl_backend *wl) {
 
 static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
 		enum wl_seat_capability caps) {
-	struct wlr_wl_backend *backend = data;
-	struct wlr_wl_seat *seat = backend_get_seat(backend, wl_seat);
+	struct wlr_wl_seat *seat = data;
+	struct wlr_wl_backend *backend = seat->backend;
 
 	if ((caps & WL_SEAT_CAPABILITY_POINTER) && seat->pointer == NULL) {
 		wlr_log(WLR_DEBUG, "seat %p offered pointer", (void *)wl_seat);
@@ -801,8 +797,7 @@ static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
 
 static void seat_handle_name(void *data, struct wl_seat *wl_seat,
 		const char *name) {
-	struct wlr_wl_backend *backend = data;
-	struct wlr_wl_seat *seat = backend_get_seat(backend, wl_seat);
+	struct wlr_wl_seat *seat = data;
 	free(seat->name);
 	seat->name = strdup(name);
 }

backend/wayland/tablet_v2.c

@@ -429,7 +429,8 @@ static void handle_pad_added(void *data,
 		struct zwp_tablet_seat_v2 *zwp_tablet_seat_v2,
 		struct zwp_tablet_pad_v2 *id) {
 	wlr_log(WLR_DEBUG, "New tablet pad");
-	struct wlr_wl_backend *backend = data;
+	struct wlr_wl_seat *seat = data;
+	struct wlr_wl_backend *backend = seat->backend;
 	struct wlr_wl_input_device *dev = create_wl_input_device(
 		backend, WLR_INPUT_DEVICE_TABLET_PAD);
 	if (!dev) {
@@ -889,7 +890,8 @@ static void handle_tab_added(void *data,
 		struct zwp_tablet_seat_v2 *zwp_tablet_seat_v2,
 		struct zwp_tablet_v2 *id) {
 	wlr_log(WLR_DEBUG, "New tablet");
-	struct wlr_wl_backend *backend = data;
+	struct wlr_wl_seat *seat = data;
+	struct wlr_wl_backend *backend = seat->backend;
 	struct wlr_wl_input_device *dev = create_wl_input_device(
 		backend, WLR_INPUT_DEVICE_TABLET_TOOL);
 
@@ -919,18 +921,18 @@ static const struct zwp_tablet_seat_v2_listener tablet_seat_listener = {
 
 struct wlr_wl_tablet_seat *wl_add_tablet_seat(
 		struct zwp_tablet_manager_v2 *manager,
-		struct wl_seat *seat, struct wlr_wl_backend *backend) {
+		struct wlr_wl_seat *seat) {
 	struct wlr_wl_tablet_seat *ret =
 		calloc(1, sizeof(struct wlr_wl_tablet_seat));
 
 	if (!(ret->tablet_seat =
-			zwp_tablet_manager_v2_get_tablet_seat(manager, seat))) {
+			zwp_tablet_manager_v2_get_tablet_seat(manager, seat->wl_seat))) {
 		free(ret);
 		return NULL;
 	}
 
 	zwp_tablet_seat_v2_add_listener(ret->tablet_seat,
-		&tablet_seat_listener, backend);
+		&tablet_seat_listener, seat);
 
 	return ret;
 }

include/backend/wayland.h

@@ -112,6 +112,8 @@ struct wlr_wl_seat {
 	struct wl_touch *touch;
 	struct wl_pointer *pointer;
 	struct wl_keyboard *keyboard;
+
+	struct wlr_wl_backend *backend;
 };
 
 struct wlr_wl_backend *get_wl_backend_from_backend(struct wlr_backend *backend);
@@ -129,6 +131,6 @@ extern const struct wl_seat_listener seat_listener;
 
 struct wlr_wl_tablet_seat *wl_add_tablet_seat(
 		struct zwp_tablet_manager_v2 *manager,
-		struct wl_seat *seat, struct wlr_wl_backend *backend);
+		struct wlr_wl_seat *seat);
 
 #endif