Complicated discounting option

[RVFmal]

I have a question as to whether the functionality exists in Prestashop for the following:

 

I want to apply a discount to all products from the same vendor. However, I want to additionally apply an option for the shopper to decide whether to take the discount in its entirety or to rather pass that saving as a donation to a non-profit charity.

 

Can I add a selectable option at checkout for them to choose the charity and manually or automatically apply the amount or percentage of their applicable discount they want to pass on to said charity?