chore: compute controls as a single value per platform

crates/layout/src/window_controls.rs

@@ -20,7 +20,7 @@ use gpui_native_theme::ActiveTheme as _;
 #[cfg(target_os = "linux")]
 use gpui::Decorations;
 #[cfg(target_os = "windows")]
-use gpui::rgba;
+use gpui::{SharedString, px, rgba};
 
 /// macOS traffic-lights zone: the pad a leading titlebar strip reserves.
 pub const TRAFFIC_LIGHT_PAD: f32 = 78.0;
@@ -52,13 +52,13 @@ impl RenderOnce for WindowControls {
         let id = self.id.clone();
 
         #[cfg(target_os = "macos")]
-        {
+        let controls = {
             let _ = (id, window, cx);
             div()
-        }
+        };
 
         #[cfg(target_os = "windows")]
-        {
+        let controls = {
             let controls = window.window_controls();
             div()
                 .flex_none()
@@ -97,10 +97,10 @@ impl RenderOnce for WindowControls {
                     true,
                     true,
                 ))
-        }
+        };
 
         #[cfg(target_os = "linux")]
-        {
+        let controls = {
             let _ = id;
             let controls = window.window_controls();
             let client_decorated =
@@ -143,7 +143,9 @@ impl RenderOnce for WindowControls {
                         |window, _cx| window.remove_window(),
                     ))
                 })
-        }
+        };
+
+        controls
     }
 }