2 files changed, 3 insertions, 0 deletions

diff --git a/include/sway/commands.h b/include/sway/commands.h
index 66f097ea..edb5a213 100644
--- a/include/sway/commands.h
+++ b/include/sway/commands.h
@@ -123,6 +123,7 @@ sway_cmd cmd_mark;
 sway_cmd cmd_mode;
 sway_cmd cmd_mouse_warping;
 sway_cmd cmd_move;
+sway_cmd cmd_opacity;
 sway_cmd cmd_new_float;
 sway_cmd cmd_new_window;
 sway_cmd cmd_no_focus;
diff --git a/include/sway/tree/container.h b/include/sway/tree/container.h
index 277165ea..3a3a9429 100644
--- a/include/sway/tree/container.h
+++ b/include/sway/tree/container.h
@@ -83,6 +83,8 @@ struct sway_container {
 
         list_t *marks; // list of char*
 
+        float alpha;
+
         struct {
                 struct wl_signal destroy;
                 // Raised after the tree updates, but before arrange_windows