backend/wayland: tag wl_surface

When integrating wlroots with another toolkit, wlroots may receive
wl_pointer.enter events for surfaces not backed by a wlr_output.
Ignore such surfaces by tagging the ones we're aware of with
wl_proxy_set_tag().

1 files changed, 2 insertions, 0 deletions

diff --git a/include/backend/wayland.h b/include/backend/wayland.h
index 1e731469..f28d1083 100644
--- a/include/backend/wayland.h
+++ b/include/backend/wayland.h
@@ -154,6 +154,8 @@ struct wlr_wl_seat {
 };
 
 struct wlr_wl_backend *get_wl_backend_from_backend(struct wlr_backend *backend);
+struct wlr_wl_output *get_wl_output_from_surface(struct wlr_wl_backend *wl,
+	struct wl_surface *surface);
 void update_wl_output_cursor(struct wlr_wl_output *output);
 
 void init_seat_keyboard(struct wlr_wl_seat *seat);