title: How to pan beyond the scrollbar range in a QGraphicsview?
body: <p>I am building a node graph in a QGraphicsView and I am currently implementing panning.
  I used the following question "<a href="https://stackoverflow.com/questions/4753681/how-to-pan-images-in-qgraphicsview">how to pan images in QGraphicsView</a>" to start but the panning is limited by the scrollbar range. </p>
  
  <p>I also tried the translate method but it gives the same result. The view is limited to a certain rectangle. </p>
  
  <p>I would like to pan without limits, the graph can becomes quite large and it is useful to be able to work in different area of the scene (one graph here, another graph over there, etc).</p>