title: How can I make widgets inside a gridview change size while scrolling?
body: <p>I have a gridview (specifically StaggeredGridView) and I want to make the children widgets change size while scrolling to get the effect that the widgets in the middle of the screen are the largest and as the user scrolls and the widget gets out of the screen it shrinks.</p>
  <p>Is there a way to implement it or does such a layout already exist?</p>