feat: allow config for showing the main app on tray icon click (#5361)

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/desktop/src/app.rs

@@ -36,6 +36,7 @@ pub(crate) struct App {
     pub(crate) webviews: HashMap<WindowId, WebviewInstance>,
     pub(crate) float_all: bool,
     pub(crate) show_devtools: bool,
+    pub(crate) tray_icon_show_window_on_click: bool,
 
     /// This single blob of state is shared between all the windows so they have access to the runtime state
     ///
@@ -60,6 +61,8 @@ impl App {
             .take()
             .unwrap_or_else(|| EventLoopBuilder::<UserWindowEvent>::with_user_event().build());
 
+        let tray_icon_show_window_on_click = cfg.tray_icon_show_window_on_click;
+
         let app = Self {
             exit_on_last_window_close: cfg.exit_on_last_window_close,
             disable_dma_buf_on_wayland: cfg.disable_dma_buf_on_wayland,
@@ -69,6 +72,7 @@ impl App {
             unmounted_dom: Cell::new(Some(virtual_dom)),
             float_all: false,
             show_devtools: false,
+            tray_icon_show_window_on_click,
             cfg: Cell::new(Some(cfg)),
             shared: Rc::new(SharedContext {
                 event_handlers: WindowEventHandlers::default(),
@@ -162,7 +166,7 @@ impl App {
             button_state: _,
         } = event
         {
-            if button == tray_icon::MouseButton::Left {
+            if button == tray_icon::MouseButton::Left && self.tray_icon_show_window_on_click {
                 for webview in self.webviews.values() {
                     webview.desktop_context.window.set_visible(true);
                     webview.desktop_context.window.set_focus();

packages/desktop/src/config.rs

@@ -69,6 +69,7 @@ pub struct Config {
     pub(crate) disable_file_drop_handler: bool,
     pub(crate) disable_dma_buf_on_wayland: bool,
     pub(crate) additional_windows_args: Option<String>,
+    pub(crate) tray_icon_show_window_on_click: bool,
 
     #[allow(clippy::type_complexity)]
     pub(crate) on_window: Option<Box<dyn FnMut(Arc<Window>, &mut VirtualDom) + 'static>>,
@@ -122,6 +123,7 @@ impl Config {
             disable_dma_buf_on_wayland: true,
             on_window: None,
             additional_windows_args: None,
+            tray_icon_show_window_on_click: true,
         }
     }
 
@@ -338,6 +340,16 @@ impl Config {
         self.additional_windows_args = Some(additional_args.to_string());
         self
     }
+
+    /// Set whether the main window is shown and focused when the tray icon is left-clicked.
+    ///
+    /// Defaults to `true` (preserves current behavior). Set to `false` for tray/menu bar apps
+    /// that only want to show the context menu when the tray icon is clicked, without
+    /// activating the main window.
+    pub fn with_tray_icon_show_window_on_click(mut self, show: bool) -> Self {
+        self.tray_icon_show_window_on_click = show;
+        self
+    }
 }
 
 impl Default for Config {