st/viewport: Queue only redraw when StAdjustment value changes

It's enough to redraw the actor. Also the actor may be already in a relayout cycle
when the StAdjustment value changes which is bad.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3059>

diff --git a/src/st/st-viewport.c b/src/st/st-viewport.c
index fa16fdaadc8eecff6744f5d650fd013fbff5bdc9..c87c0c2b107f2f6e72458a19963e843bc469063f 100644 (file)
--- a/src/st/st-viewport.c
+++ b/src/st/st-viewport.c
@@ -89,7 +89,7 @@ adjustment_value_notify_cb (StAdjustment *adjustment,
 {
   clutter_actor_invalidate_transform (CLUTTER_ACTOR (viewport));
   clutter_actor_invalidate_paint_volume (CLUTTER_ACTOR (viewport));
-  clutter_actor_queue_relayout (CLUTTER_ACTOR (viewport));
+  clutter_actor_queue_redraw (CLUTTER_ACTOR (viewport));
 }
 
 static void