fix(desktop): use custom window controls on Linux

apps/desktop/src/composables/__tests__/useWindowControls.spec.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+import { shouldReserveMacTrafficLightInset, shouldShowWindowControls } from "@/composables/useWindowControls";
+
+describe("window controls", () => {
+  it("shows custom controls for non-macOS desktop windows", () => {
+    expect(shouldShowWindowControls(false, true)).toBe(true);
+  });
+
+  it("keeps macOS on native traffic lights", () => {
+    expect(shouldShowWindowControls(true, true)).toBe(false);
+  });
+
+  it("does not show desktop controls in web runtime", () => {
+    expect(shouldShowWindowControls(false, false)).toBe(false);
+  });
+
+  it("reserves traffic light inset only for non-fullscreen macOS desktop windows", () => {
+    expect(shouldReserveMacTrafficLightInset(true, false, true)).toBe(true);
+    expect(shouldReserveMacTrafficLightInset(true, true, true)).toBe(false);
+    expect(shouldReserveMacTrafficLightInset(false, false, true)).toBe(false);
+    expect(shouldReserveMacTrafficLightInset(true, false, false)).toBe(false);
+  });
+});

apps/desktop/src/composables/useWindowControls.ts

@@ -1,17 +1,21 @@
 import { ref, onMounted, onUnmounted } from "vue";
 import { isTauriRuntime } from "@/lib/tauriRuntime";
-import { isMacOS, isWindows } from "@/lib/platform";
+import { isMacOS } from "@/lib/platform";
 
 export function shouldReserveMacTrafficLightInset(isMac: boolean, isFullscreen: boolean, isDesktop = true): boolean {
   return isDesktop && isMac && !isFullscreen;
 }
 
+export function shouldShowWindowControls(isMac: boolean, isDesktop = true): boolean {
+  return isDesktop && !isMac;
+}
+
 export function useWindowControls() {
   const isMaximized = ref(false);
   const isFullscreen = ref(false);
   const isMac = isMacOS();
   const isDesktop = isTauriRuntime();
-  const showControls = isDesktop && isWindows();
+  const showControls = shouldShowWindowControls(isMac, isDesktop);
 
   let unlisten: (() => void) | null = null;
 

src-tauri/src/lib.rs

@@ -68,8 +68,7 @@ fn should_show_main_window_after_setup() -> bool {
 
 fn native_window_decorations_override(target_os: &str) -> Option<bool> {
     match target_os {
-        "windows" => Some(false),
-        "linux" => Some(true),
+        "windows" | "linux" => Some(false),
         _ => None,
     }
 }
@@ -270,7 +269,7 @@ mod tests {
     #[test]
     fn overrides_native_window_decorations_for_desktop_platforms() {
         assert_eq!(native_window_decorations_override("windows"), Some(false));
-        assert_eq!(native_window_decorations_override("linux"), Some(true));
+        assert_eq!(native_window_decorations_override("linux"), Some(false));
         assert_eq!(native_window_decorations_override("macos"), None);
     }