Directive whenOnScreen triggers evaluation of given angular expression when the element enters visible screen area.
<el ... when-on-screen="something()"></el>
See index.html in source repository or
http://plnkr.co/edit/t0MszlolwrgpxGxrZvig?p=preview for a complete example.
[email protected]:pnu/angular-when-on-screen.git
bower install angular-when-on-screen --save