It depends on the context, but it generally can be replaced with, "It made me very happy." It can also used sarcastically to mean the opposite:"that ruined my day"

another expression which is kinda similar would be "you lifted my spirits" or "you lift my spirits" Also I found a cool list recently containing a few English idioms online http://edmontonenglishschool-learningenglishonline.com/free-training/idioms-expressions/idioms-and-expressions-list/ Hope this helped :)