Get ion-content size

Is there a delegate, or config perm that returns the current ion-content size, and margins (aka, header + tabs height)?

Or is the only way using a selector.

i am using selectors for that or directives:

This is a littel directive which determines the dimensions of an element and stores the value on a given key to the scope.
So you can use this for the child nodes.

Maybe you can use something of that for you.