title: How to scale a Text widget that would behave like a scaling of an image
body: <p>I would like to perform an Hero transition that will change, at the end, the size of a Widget.
  This widget contains some text. </p>
  
  <p>By default, the text widget will resize and the text inside move and resize to fit the text widget.</p>
  
  <p>I would like to make to whole widget behave like an image would do : Everything will scale (zoom).</p>
  
  <p>I tried :</p>
  
  <p>auto_size_text package : The text will still move and the result is not perfect</p>
  
  <p>screenshot package : It take too long to generate the image, replace the current widget with the image before performing the hero transition.</p>
  
  <p>I am thinking about RenderRepaintBoundary, but this seems a lot of work for a simple task.</p>
  
  <p>Any idea ?</p>