How to include rich text in a QImage

One method is to use a QTextDocument. In the example code fragment below we assume that text is a QString containing some rich text.

  QTextDocument doc;
  doc.setHtml(text);
  double offsetV = doc.size().height()*0.5;
  double offsetH = 0.;
  painter->translate(QPointF(-offsetH, -offsetV));
  doc.drawContents(painter);
  painter->translate(QPointF(offsetH, offsetV));

This will give left-aligned text at the current position. For centre-aligned text use

   double offsetH = doc.size().width()*0.5;

or for right-aligned text

   double offsetH = doc.size().width();