Adding a helper functions to center CGRect in another CGRect.
Adding a helper functions to center CGRect in another CGRect.

adan016/tapkulibrary,yybutcher/tapkulibrary,triage/tapkulibrary,weiyanwu84/tapkulibrary,shads196770/tapkulibrary,mohsinalimat/tapkulibrary,venkadesh02/tapkulibrary,pengleelove/tapkulibrary,bpap1989/test