title: Width and height of QGraphicsSvgItem
body: <p>I believe this is simple question, but not for beginners as I am. My code is:</p>
  
  <pre><code>...
  svg_file = QtCore.QFile('C:\svgTest.svg')
  self.svgItem = QtSvg.QGraphicsSvgItem(svg_file.fileName())
  ...
  </code></pre>
  
  <p>How do I get width and height of self.svgItem?
  I've tried this:</p>
  
  <pre><code>print self.svgItem.boundingRect()
  </code></pre>
  
  <p>and get:</p>
  
  <pre><code>PyQt4.QtCore.QRectF(0.0, 0.0, 300.0, 383.0)
  </code></pre>
  
  <p>where "300" and "383" are values that I need.</p>