/**
* Paints the mid-layer of the signal with a QPainter
* @param p the QPainter to paint into.
* @param pp the painting parameters object to paint with..
**/
/**
* Paints the mid-layer of the signal with a QPainter
* @param p the QPainter to paint into.
* @param pp the painting parameters object to paint with..
**/
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);