Need help with XWarpPointer implementation in gtk4-rs

[d47081]

Could somebody please help with Rust/GTK4 implementation for this solution:
https://discourse.gnome.org/t/what-does-broken-accounting-of-active-state/24474/3

#ifdef GDK_WINDOWING_X11
      GdkDisplay *displayGdk = gdk_display_get_default();
      Display *display = gdk_x11_display_get_xdisplay(displayGdk);
      GtkNative *native = gtk_widget_get_native(MainWidget);
      GdkSurface *surface = gtk_native_get_surface(native);
      Window src_w = gdk_x11_surface_get_xid (surface);
      unsigned int src_width = gtk_widget_get_width(MainWidget);
      int i = round(x);
      XWarpPointer(display, src_w, None, 0, 0, 0, 0, src_width-i, 0);        
#endif
      gtk_popover_popup(GTK_POPOVER(popover));

Seems this code for GTK 3, I have no other ideas make popover working with Libadwaita's TabBar
https://gitlab.gnome.org/GNOME/gtk/-/issues/4563