/**
* 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..
*/
/**
* Paints the foreground layer of the item with a QPainter
* @param p the QPainter to paint into.
* @param pp the painting parameters object to paint with.
*/
/**
* Paints the foreground layer of the item with a QPainter
* @param p the QPainter to paint into.
* @param pp the painting parameters object to paint with.
*/
private:
void paint_grid(QPainter &p, int y, int left, int right);
private:
void paint_grid(QPainter &p, int y, int left, int right);
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);
void paint_logic_caps(QPainter &p, QLineF *const lines,
vector< pair<int64_t, bool> > &edges,
void paint_logic_caps(QPainter &p, QLineF *const lines,
vector< pair<int64_t, bool> > &edges,