i.e.

mnOutWidth = maPaperSize.Width() - 2*maPageOffset.X();
mnOutWidth = maPaperSize.Width() - 2*maPageOffset.Y();

might possibly be intended to be

mnOutWidth = maPaperSize.Width() - 2*maPageOffset.X();
mnOutHeight = maPaperSize.Height() - 2*maPageOffset.Y();

either way, its behind a special getenv, so ditch the lot