Use noop output when there's no outputs connected

Instead of having NULL workspace->output pointers, use a noop output.
This should be safer.

1 files changed, 6 insertions, 0 deletions

diff --git a/sway/server.c b/sway/server.c
index 5ae9bb01..43dc3900 100644
--- a/sway/server.c
+++ b/sway/server.c
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <wayland-server.h>
 #include <wlr/backend.h>
+#include <wlr/backend/noop.h>
 #include <wlr/backend/session.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_compositor.h>
@@ -25,6 +26,7 @@
 #include "sway/config.h"
 #include "sway/desktop/idle_inhibit_v1.h"
 #include "sway/input/input-manager.h"
+#include "sway/output.h"
 #include "sway/server.h"
 #include "sway/tree/root.h"
 #if HAVE_XWAYLAND
@@ -36,6 +38,7 @@ bool server_privileged_prepare(struct sway_server *server) {
         server->wl_display = wl_display_create();
         server->wl_event_loop = wl_display_get_event_loop(server->wl_display);
         server->backend = wlr_backend_autocreate(server->wl_display, NULL);
+        server->noop_backend = wlr_noop_backend_create(server->wl_display);
 
         if (!server->backend) {
                 sway_log(SWAY_ERROR, "Unable to create backend");
@@ -116,6 +119,9 @@ bool server_init(struct sway_server *server) {
                 return false;
         }
 
+        struct wlr_output *wlr_output = wlr_noop_add_output(server->noop_backend);
+        root->noop_output = output_create(wlr_output);
+
         // This may have been set already via -Dtxn-timeout
         if (!server->txn_timeout_ms) {
                 server->txn_timeout_ms = 200;