Apply clang-tidy fix to whole project?

I'd like to be able to apply a fix for an issue flagged by clang-tidy to the whole project. For example, apply "NULL -> nullptr" over all files in the project. I see an option to apply a quick fix to one individual warning, but I haven't found any way to apply a selected fix to the whole project. Is this possible from the IDE, or would I need to invoke clang-tidy manually from the command line for this?