Not really. I have no use for QPainter. But nevertheless, I have fixed the problem. For anyone having the same problem, here is a solution. Define a script in your HEAD tags in the HTML content with getters for page height and width:

Qt Code: 
  1. <script LANGUAGE="JavaScript">
  2.         function getHeight () 
  3.         {
  4.             return window.document.body.scrollHeight;
  5.         }
  6.         function getWidth () 
  7.         {
  8.             return window.document.body.scrollWidth;
  9.         }
  10.     </script>
To copy to clipboard, switch view to plain text mode 

Now in the code where you get the page content from the webview after loadFinished signal has been emitted, try this:

Qt Code: 
  1. QWebView* view = dynamic_cast<QWebView *>(sender());
  2.     QVariant heightVariant = view->page()->mainFrame()->evaluateJavaScript("getHeight()");
  3.     QVariant widthVariant = view->page()->mainFrame()->evaluateJavaScript("getWidth()");
  4.     QPrinter *printer = new QPrinter();
  5.     printer->setOutputFileName("<path to pdf>");
  6.     printer->setOutputFormat(QPrinter::PdfFormat);
  7.     printer->setOrientation(QPrinter::Portrait);
  8.     printer->setPaperSize(QSize(widthVariant.toInt(),heightVariant.toInt()),QPrinter::Point);
  9.     view->page()->mainFrame()->print(printer);
To copy to clipboard, switch view to plain text mode 

That solves the problem.