HitTest.m

//override this in a UIView Custom Class

// check if any sub element inside view is outside bounds of the view
// if yes, expand the hitable area of view with its sub element
// http://stackoverflow.com/questions/11770743/capturing-touches-on-a-subview-outside-the-frame-of-its-superview-using-hittest
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
  if (!self.clipsToBounds && !self.hidden && self.alpha > 0) {
    for (UIView *subview in self.subviews.reverseObjectEnumerator) {
      CGPoint subPoint = [subview convertPoint:point fromView:self];
      UIView *result = [subview hitTest:subPoint withEvent:event];
      if (result != nil) {
        return result;
      }
    }
  }
  
  return nil;
}