QSvgGenerator temp_img;
//Save file as image
QString path = QFileDialog::getSaveFileName(w, ("Save as image"), "",
("SVG file (*.svg)"));

if (path.isEmpty())
    return;

temp_img.setFileName(path);

QPainter painter;
painter.begin(&temp_img);
painter.setFont(QFont("Arial",12));
.
.
.
painter.end();