Handle layer changes for layer shell surfaces

Closes: https://github.com/swaywm/sway/issues/4644
References: https://github.com/emersion/rootston/commit/1982106c9b0fbd48ee9fe20e013524125f6ca3cf

1 files changed, 11 insertions, 1 deletions

diff --git a/sway/desktop/layer_shell.c b/sway/desktop/layer_shell.c
index 5f2b74cd..9289bb4a 100644
--- a/sway/desktop/layer_shell.c
+++ b/sway/desktop/layer_shell.c
@@ -277,7 +277,17 @@ static void handle_surface_commit(struct wl_listener *listener, void *data) {
         struct sway_output *output = wlr_output->data;
         struct wlr_box old_geo = layer->geo;
         arrange_layers(output);
-        if (memcmp(&old_geo, &layer->geo, sizeof(struct wlr_box)) != 0) {
+
+        bool geo_changed =
+                memcmp(&old_geo, &layer->geo, sizeof(struct wlr_box)) != 0;
+        bool layer_changed = layer->layer != layer_surface->current.layer;
+        if (layer_changed) {
+                wl_list_remove(&layer->link);
+                wl_list_insert(&output->layers[layer_surface->current.layer],
+                        &layer->link);
+                layer->layer = layer_surface->current.layer;
+        }
+        if (geo_changed || layer_changed) {
                 output_damage_surface(output, old_geo.x, old_geo.y,
                         layer_surface->surface, true);
                 output_damage_surface(output, layer->geo.x, layer->geo.y,