libweston: introduce weston_output_from_resource()
This is a simple wrapper for casting the user data of a wl_resource into
a struct weston_output pointer. Using the wrapper clearly marks all the
places where a wl_output protocol object is used.
Replace ALL wl_output related calls to wl_resource_get_user_data() with
a call to weston_output_from_resource().
v2: add type assert in weston_output_from_resource().
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>
diff --git a/fullscreen-shell/fullscreen-shell.c b/fullscreen-shell/fullscreen-shell.c
index 7368cb4..6f4565a 100644
--- a/fullscreen-shell/fullscreen-shell.c
+++ b/fullscreen-shell/fullscreen-shell.c
@@ -769,7 +769,7 @@
}
if (output_res) {
- output = wl_resource_get_user_data(output_res);
+ output = weston_output_from_resource(output_res);
fsout = fs_output_for_output(output);
fs_output_set_surface(fsout, surface, method, 0, 0);
} else {
@@ -813,7 +813,7 @@
struct weston_seat *seat;
struct fs_output *fsout;
- output = wl_resource_get_user_data(output_res);
+ output = weston_output_from_resource(output_res);
fsout = fs_output_for_output(output);
if (surface_res == NULL) {