layer_shell: Arrange popups even if exclusive zone doesn't change

include/sway/desktop/transaction.h

@@ -2,6 +2,7 @@
 #define _SWAY_TRANSACTION_H
 #include <stdint.h>
 #include <stdbool.h>
+#include <wlr/types/wlr_scene.h>
 
 /**
  * Transactions enable us to perform atomic layout updates.
@@ -58,4 +59,6 @@ bool transaction_notify_view_ready_by_serial(struct sway_view *view,
 bool transaction_notify_view_ready_by_geometry(struct sway_view *view,
 		double x, double y, int width, int height);
 
+void arrange_popups(struct wlr_scene_tree *popups);
+
 #endif

sway/desktop/layer_shell.c

@@ -85,6 +85,8 @@ void arrange_layers(struct sway_output *output) {
 		sway_log(SWAY_DEBUG, "Usable area changed, rearranging output");
 		output->usable_area = usable_area;
 		arrange_output(output);
+	} else {
+		arrange_popups(root->layers.popup);
 	}
 }
 

sway/desktop/transaction.c

@@ -606,9 +606,9 @@ static void arrange_output(struct sway_output *output, int width, int height) {
 	}
 }
 
-static void arrange_popup(struct wlr_scene_tree *popup) {
+void arrange_popups(struct wlr_scene_tree *popups) {
 	struct wlr_scene_node *node;
-	wl_list_for_each(node, &popup->children, link) {
+	wl_list_for_each(node, &popups->children, link) {
 		struct sway_xdg_popup *popup = scene_descriptor_try_get(node,
 			SWAY_SCENE_DESC_POPUP);
 
@@ -679,7 +679,7 @@ static void arrange_root(struct sway_root *root) {
 		}
 	}
 
-	arrange_popup(root->layers.popup);
+	arrange_popups(root->layers.popup);
 }
 
 /**