LibGUI+WindowServer: Allow applets to retrieve their location

MenuApplet windows can now call rect_in_menubar to return their
location in the MenuBar.

Libraries/LibGUI/Window.cpp

@@ -177,6 +177,12 @@ String Window::title() const
     return WindowServerConnection::the().send_sync<Messages::WindowServer::GetWindowTitle>(m_window_id)->title();
 }
 
+Gfx::IntRect Window::rect_in_menubar() const
+{
+    ASSERT(m_window_type == WindowType::MenuApplet);
+    return WindowServerConnection::the().send_sync<Messages::WindowServer::GetWindowRectInMenubar>(m_window_id)->rect();
+}
+
 Gfx::IntRect Window::rect() const
 {
     if (!is_visible())

Libraries/LibGUI/Window.h

@@ -107,6 +107,7 @@ public:
     int height() const { return rect().height(); }
 
     Gfx::IntRect rect() const;
+    Gfx::IntRect rect_in_menubar() const;
     Gfx::IntSize size() const { return rect().size(); }
     void set_rect(const Gfx::IntRect&);
     void set_rect(int x, int y, int width, int height) { set_rect({ x, y, width, height }); }

Services/WindowServer/ClientConnection.cpp

@@ -424,6 +424,17 @@ OwnPtr<Messages::WindowServer::GetWindowRectResponse> ClientConnection::handle(c
     return make<Messages::WindowServer::GetWindowRectResponse>(it->value->rect());
 }
 
+OwnPtr<Messages::WindowServer::GetWindowRectInMenubarResponse> ClientConnection::handle(const Messages::WindowServer::GetWindowRectInMenubar& message)
+{
+    int window_id = message.window_id();
+    auto it = m_windows.find(window_id);
+    if (it == m_windows.end()) {
+        did_misbehave("GetWindowRectInMenubar: Bad window ID");
+        return nullptr;
+    }
+    return make<Messages::WindowServer::GetWindowRectInMenubarResponse>(it->value->rect_in_menubar());
+}
+
 Window* ClientConnection::window_from_id(i32 window_id)
 {
     auto it = m_windows.find(window_id);

Services/WindowServer/ClientConnection.h

@@ -109,6 +109,7 @@ private:
     virtual OwnPtr<Messages::WindowServer::IsMaximizedResponse> handle(const Messages::WindowServer::IsMaximized&) override;
     virtual OwnPtr<Messages::WindowServer::SetWindowRectResponse> handle(const Messages::WindowServer::SetWindowRect&) override;
     virtual OwnPtr<Messages::WindowServer::GetWindowRectResponse> handle(const Messages::WindowServer::GetWindowRect&) override;
+    virtual OwnPtr<Messages::WindowServer::GetWindowRectInMenubarResponse> handle(const Messages::WindowServer::GetWindowRectInMenubar&) override;
     virtual void handle(const Messages::WindowServer::InvalidateRect&) override;
     virtual void handle(const Messages::WindowServer::DidFinishPainting&) override;
     virtual OwnPtr<Messages::WindowServer::SetGlobalCursorTrackingResponse> handle(const Messages::WindowServer::SetGlobalCursorTracking&) override;

Services/WindowServer/WindowServer.ipc

@@ -56,6 +56,8 @@ endpoint WindowServer = 2
     SetWindowRect(i32 window_id, Gfx::IntRect rect) => (Gfx::IntRect rect)
     GetWindowRect(i32 window_id) => (Gfx::IntRect rect)
 
+    GetWindowRectInMenubar(i32 window_id) => (Gfx::IntRect rect)
+
     IsMaximized(i32 window_id) => (bool maximized)
 
     InvalidateRect(i32 window_id, Vector<Gfx::IntRect> rects, bool ignore_occlusion) =|