Make fullscreen check for fullscreen parents

This ensures that a child of a fullscreen container cannot
be fullscreened.

1 files changed, 9 insertions, 2 deletions

diff --git a/sway/commands/fullscreen.c b/sway/commands/fullscreen.c
index a268ba03..0d7ba112 100644
--- a/sway/commands/fullscreen.c
+++ b/sway/commands/fullscreen.c
@@ -33,8 +33,15 @@ struct cmd_results *cmd_fullscreen(int argc, char **argv) {
                 }
         }
 
-        bool is_fullscreen = container &&
-                container->fullscreen_mode != FULLSCREEN_NONE;
+        bool is_fullscreen = false;
+        for (struct sway_container *curr = container; curr; curr = curr->parent) {
+                if (curr && curr->fullscreen_mode != FULLSCREEN_NONE) {
+                        container = curr;
+                        is_fullscreen = true;
+                        break;
+                }
+        }
+
         bool global = false;
         bool enable = !is_fullscreen;