* Computes the vertical extents of the contents of this row item.
* @return A pair containing the minimum and maximum y-values.
*/
* Computes the vertical extents of the contents of this row item.
* @return A pair containing the minimum and maximum y-values.
*/
void paint_grid(QPainter &p, int y, int left, int right);
void paint_trace(QPainter &p,
void paint_grid(QPainter &p, int y, int left, int right);
void paint_trace(QPainter &p,
int y, int left, const int64_t start, const int64_t end,
const double pixels_offset, const double samples_per_pixel);
void paint_envelope(QPainter &p,
int y, int left, const int64_t start, const int64_t end,
const double pixels_offset, const double samples_per_pixel);
void paint_envelope(QPainter &p,
int y, int left, const int64_t start, const int64_t end,
const double pixels_offset, const double samples_per_pixel);
int y, int left, const int64_t start, const int64_t end,
const double pixels_offset, const double samples_per_pixel);