In the first version of Charlie and the Chocolate Factory's movie (1971) there is a moment at the end where Willy Wonka, Charly and his grandfather are in the elevator. Once the elevator is very high in the sky, Willy Wonka says to charly "I'm giving the factory to you", Charly is very surprised, he did not know that Willy Wonka would give him the factory.
My question is why "giving" and not "give"? Is it because Willy Wonka had made his decision to give his factory to Charly before they got in the elevator (may be a long time before) or did he want to put some affect and solemnity to this gift or for both reasons. This leads to my second question does present continuous always imply some affect when you use it .