title: How QRectF::adjusted() works
body: <p>My custom graphics item has (0,-60 60x60) boundingRect.
  When I adjust the coordinates with</p>
  
  <pre><code>rect.adjusted(-5,-5,5,5)
  </code></pre>
  
  <p>new boundingRect returns (-5,-65,70x70).
  I read the documentation <a href="http://doc.trolltech.com/4.6/qrectf.html#adjusted" rel="noreferrer">here</a> and I think boundingRect should return (-5,-65,65x65)
  <br/>Do I misunderstand the doc?</p>