Damage output when a fullscreen view unmaps

Also moved the arranging into view_unmap to avoid excessive code
duplication.

include/sway/tree/view.h

@@ -245,10 +245,7 @@ void view_destroy(struct sway_view *view);
 
 void view_map(struct sway_view *view, struct wlr_surface *wlr_surface);
 
-/**
- * Unmap the view and return the surviving parent (after reaping).
- */
-struct sway_container *view_unmap(struct sway_view *view);
+void view_unmap(struct sway_view *view);
 
 void view_update_position(struct sway_view *view, double lx, double ly);
 

sway/desktop/xdg_shell.c

@@ -197,8 +197,7 @@ static void handle_unmap(struct wl_listener *listener, void *data) {
 		return;
 	}
 
-	struct sway_container *parent = view_unmap(view);
-	arrange_and_commit(parent);
+	view_unmap(view);
 
 	wl_list_remove(&xdg_shell_view->commit.link);
 	wl_list_remove(&xdg_shell_view->new_popup.link);

sway/desktop/xdg_shell_v6.c

@@ -196,8 +196,7 @@ static void handle_unmap(struct wl_listener *listener, void *data) {
 		return;
 	}
 
-	struct sway_container *parent = view_unmap(view);
-	arrange_and_commit(parent);
+	view_unmap(view);
 
 	wl_list_remove(&xdg_shell_v6_view->commit.link);
 	wl_list_remove(&xdg_shell_v6_view->new_popup.link);

sway/desktop/xwayland.c

@@ -260,8 +260,7 @@ static void handle_unmap(struct wl_listener *listener, void *data) {
 		return;
 	}
 
-	struct sway_container *parent = view_unmap(view);
-	arrange_and_commit(parent);
+	view_unmap(view);
 
 	wl_list_remove(&xwayland_view->commit.link);
 	view->surface = NULL;
@@ -297,9 +296,7 @@ static void handle_destroy(struct wl_listener *listener, void *data) {
 	struct sway_view *view = &xwayland_view->view;
 
 	if (view->surface) {
-		struct sway_container *parent = view_unmap(view);
-		arrange_and_commit(parent);
-
+		view_unmap(view);
 		wl_list_remove(&xwayland_view->commit.link);
 		view->surface = NULL;
 	}

sway/tree/view.c

@@ -539,7 +539,7 @@ void view_map(struct sway_view *view, struct wlr_surface *wlr_surface) {
 	view_handle_container_reparent(&view->container_reparent, NULL);
 }
 
-struct sway_container *view_unmap(struct sway_view *view) {
+void view_unmap(struct sway_view *view) {
 	wl_signal_emit(&view->events.unmap, view);
 
 	wl_list_remove(&view->surface_new_subsurface.link);
@@ -549,10 +549,16 @@ struct sway_container *view_unmap(struct sway_view *view) {
 		struct sway_container *ws = container_parent(view->swayc, C_WORKSPACE);
 		ws->sway_workspace->fullscreen = NULL;
 		container_destroy(view->swayc);
-		return ws;
-	}
 
-	return container_destroy(view->swayc);
+		struct sway_container *output = ws->parent;
+		struct sway_transaction *transaction = transaction_create();
+		arrange_windows(output, transaction);
+		transaction_add_damage(transaction, container_get_box(output));
+		transaction_commit(transaction);
+	} else {
+		struct sway_container *parent = container_destroy(view->swayc);
+		arrange_and_commit(parent);
+	}
 }
 
 void view_update_position(struct sway_view *view, double lx, double ly) {