// Fill widget background
painter.fillRect(event->rect(), palette().color(QPalette::Base));
- if (!data_ || (data_size_ == 0)) {
+ if (!data_ || (data_size_ == 0) || (data_->chunks.empty())) {
painter.setPen(palette().color(QPalette::Text));
QString s = tr("No data available");
int x = (areaSize.width() - fontMetrics().boundingRect(s).width()) / 2;