Browser: Inform WebView processes of the browser window's position/size

Userland/Applications/Browser/BrowserWindow.cpp

@@ -682,4 +682,36 @@ void BrowserWindow::config_bool_did_change(String const& domain, String const& g
     // NOTE: CloseDownloadWidgetOnFinish is read each time in DownloadWindow
 }
 
+void BrowserWindow::broadcast_window_position(Gfx::IntPoint const& position)
+{
+    tab_widget().for_each_child_of_type<Browser::Tab>([&](auto& tab) {
+        tab.window_position_changed(position);
+        return IterationDecision::Continue;
+    });
+}
+
+void BrowserWindow::broadcast_window_size(Gfx::IntSize const& size)
+{
+    tab_widget().for_each_child_of_type<Browser::Tab>([&](auto& tab) {
+        tab.window_size_changed(size);
+        return IterationDecision::Continue;
+    });
+}
+
+void BrowserWindow::event(Core::Event& event)
+{
+    switch (event.type()) {
+    case GUI::Event::Move:
+        broadcast_window_position(static_cast<GUI::MoveEvent&>(event).position());
+        break;
+    case GUI::Event::Resize:
+        broadcast_window_size(static_cast<GUI::ResizeEvent&>(event).size());
+        break;
+    default:
+        break;
+    }
+
+    Window::event(event);
+}
+
 }

Userland/Applications/Browser/BrowserWindow.h

@@ -43,6 +43,9 @@ public:
     void content_filters_changed();
     void proxy_mappings_changed();
 
+    void broadcast_window_position(Gfx::IntPoint const&);
+    void broadcast_window_size(Gfx::IntSize const&);
+
 private:
     explicit BrowserWindow(CookieJar&, URL);
 
@@ -53,6 +56,8 @@ private:
     virtual void config_string_did_change(String const& domain, String const& group, String const& key, String const& value) override;
     virtual void config_bool_did_change(String const& domain, String const& group, String const& key, bool value) override;
 
+    virtual void event(Core::Event&) override;
+
     RefPtr<GUI::Action> m_go_back_action;
     RefPtr<GUI::Action> m_go_forward_action;
     RefPtr<GUI::Action> m_go_home_action;

Userland/Applications/Browser/Tab.cpp

@@ -545,6 +545,16 @@ void Tab::action_left(GUI::Action&)
     m_statusbar->set_override_text({});
 }
 
+void Tab::window_position_changed(Gfx::IntPoint const& position)
+{
+    m_web_content_view->set_window_position(position);
+}
+
+void Tab::window_size_changed(Gfx::IntSize const& size)
+{
+    m_web_content_view->set_window_size(size);
+}
+
 BrowserWindow const& Tab::window() const
 {
     return static_cast<BrowserWindow const&>(*Widget::window());

Userland/Applications/Browser/Tab.h

@@ -57,6 +57,9 @@ public:
     void action_entered(GUI::Action&);
     void action_left(GUI::Action&);
 
+    void window_position_changed(Gfx::IntPoint const&);
+    void window_size_changed(Gfx::IntSize const&);
+
     Function<void(String const&)> on_title_change;
     Function<void(const URL&)> on_tab_open_request;
     Function<void(Tab&)> on_tab_close_request;

Userland/Applications/Browser/main.cpp

@@ -190,5 +190,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 
     window->show();
 
+    window->broadcast_window_position(window->position());
+    window->broadcast_window_size(window->size());
+
     return app->exec();
 }