feat: dynamic window level elevation

apps/desktop/src-tauri/Cargo.toml

@@ -53,6 +53,7 @@ anyhow = "1.0.86"
 objc = "0.2.7"
 cocoa = "0.25.0"
 tauri-nspanel = { git = "https://github.com/ahkohd/tauri-nspanel", branch = "v1" }
+system-notification = { git = "https://github.com/ahkohd/tauri-toolkit", branch = "v1" }
 
 [features]
 # this feature is used for production builds or when `devPath` points to the filesystem

apps/desktop/src-tauri/src/app_handle.rs

@@ -0,0 +1,44 @@
+use tauri::{AppHandle, Runtime};
+
+#[cfg(target_os = "macos")]
+use tauri_nspanel::{
+  cocoa::base::id,
+  objc::{class, msg_send, sel, sel_impl},
+};
+
+#[cfg(target_os = "macos")]
+fn nsstring_to_string(ns_string: id) -> Option<String> {
+  use std::ffi::{c_char, CStr};
+
+  let utf8: id = unsafe { msg_send![ns_string, UTF8String] };
+
+  if !utf8.is_null() {
+    Some(unsafe {
+      {
+        CStr::from_ptr(utf8 as *const c_char)
+          .to_string_lossy()
+          .into_owned()
+      }
+    })
+  } else {
+    None
+  }
+}
+
+#[cfg(target_os = "macos")]
+pub trait AppHandleExt {
+  fn frontmost_application_bundle_id() -> Option<String>;
+}
+
+#[cfg(target_os = "macos")]
+impl<R: Runtime> AppHandleExt for AppHandle<R> {
+  fn frontmost_application_bundle_id() -> Option<String> {
+    let workspace: id = unsafe { msg_send![class!(NSWorkspace), sharedWorkspace] };
+
+    let frontmost_application: id = unsafe { msg_send![workspace, frontmostApplication] };
+
+    let bundle_id: id = unsafe { msg_send![frontmost_application, bundleIdentifier] };
+
+    nsstring_to_string(bundle_id)
+  }
+}

apps/desktop/src-tauri/src/constants.rs

@@ -16,4 +16,6 @@ pub const SHOW_UPDATE_MODAL: &str = "show_update_modal";
 
 /// window levels
 // NOTE: league sets it's window to 1000 so we go one higher
-pub const HIGHER_LEVEL_THAN_LEAGUE: i32 = 1001;
+pub static HIGHER_LEVEL_THAN_LEAGUE: i32 = 1001;
+/// Float panel window level
+pub static OVERLAYED_NORMAL_LEVEL: i32 = 8;

apps/desktop/src-tauri/src/main.rs

@@ -8,6 +8,7 @@
 #[macro_use]
 extern crate objc;
 
+mod app_handle;
 mod commands;
 mod constants;
 mod tray;
@@ -21,19 +22,49 @@ use tauri_plugin_window_state::StateFlags;
 use tray::Tray;
 use window_custom::WindowExt;
 
+#[cfg(target_os = "macos")]
+use app_handle::AppHandleExt;
+
 #[cfg(target_os = "macos")]
 use window_custom::macos::WindowExtMacos;
 
+#[cfg(target_os = "macos")]
+use system_notification::WorkspaceListener;
+
 #[cfg(target_os = "macos")]
 use tauri::Window;
 
 pub struct Pinned(AtomicBool);
 
 #[cfg(target_os = "macos")]
 fn apply_macos_specifics(window: &Window) {
+  use tauri::{AppHandle, Wry};
+  use tauri_nspanel::ManagerExt;
+
   window.remove_shadow();
 
-  window.set_float_panel(constants::HIGHER_LEVEL_THAN_LEAGUE);
+  window.set_float_panel(constants::OVERLAYED_NORMAL_LEVEL);
+
+  let app_handle = window.app_handle();
+
+  app_handle.listen_workspace(
+    "NSWorkspaceDidActivateApplicationNotification",
+    |app_handle| {
+      let bundle_id = AppHandle::<Wry>::frontmost_application_bundle_id();
+
+      if let Some(bundle_id) = bundle_id {
+        let is_league_of_legends = bundle_id == "com.riotgames.leagueoflegends";
+
+        let panel = app_handle.get_panel("main").unwrap();
+
+        panel.set_level(if is_league_of_legends {
+          constants::HIGHER_LEVEL_THAN_LEAGUE
+        } else {
+          constants::OVERLAYED_NORMAL_LEVEL
+        });
+      }
+    },
+  );
 }
 
 fn main() {