void paint_trace(QPainter &p,
const std::shared_ptr<pv::data::AnalogSegment> &segment,
int y, int left, const int64_t start, const int64_t end,
void paint_trace(QPainter &p,
const std::shared_ptr<pv::data::AnalogSegment> &segment,
int y, int left, const int64_t start, const int64_t end,