Is it possible when user clicks the “Add to Cart”, redirect to the login page?

Hi, we love your plugin, its really wonderful and usefull ….just have one question if its possible to do …… we use option “Block adding products to cart” and its really so good – but want to ask if its possible that after visitor click ‘Add to Cart’ button and he/she is not loged in – to redirect them automatically on login page (not only notification) ….. we would like if there is any possibility to do this or to change/add in future options (we are users of pro version of course) …thank for time and understanding