title: How to grow/shrink a TextBlock (Font Size) to the available space in WPF?
body: <p>I've seen this question asked a lot, however, to the opposite of what I'm looking for.  While other people want a control to size itself based on the size of text, I'm trying to figure out is if there is a way to grow the size of text to the amount of space available.</p>
  
  <p>Take the idea of a digital clock window and you want the numbers stating the time to grow (or shrink) based on the size of the window the clock is in.  If there isn't a way to automatically do this any pointers to a programmatic way I can get this accomplished?</p>