painter.setPen(palette().color(QPalette::Text));
QString s = tr("No data available");
int x = (areaSize.width() - fontMetrics().boundingRect(s).width()) / 2;
painter.setPen(palette().color(QPalette::Text));
QString s = tr("No data available");
int x = (areaSize.width() - fontMetrics().boundingRect(s).width()) / 2;