Method wheelEvent

DSView/pv/view/header.cpp:302–377

}

void Header::wheelEvent(QWheelEvent *event)
{
    assert(event);

    int x = 0;
    int y = 0;
    int delta = 0;
    bool isVertical = true;
    QPoint pos;
    (void)x;
    (void)y;
     
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
    x = (int)event->position().x();
    y = (int)event->position().y();    
    int anglex = event->angleDelta().x();
    int angley = event->angleDelta().y();

    pos.setX(x);
    pos.setY(y);

    if (anglex == 0 || ABS_VAL(angley) >= ABS_VAL(anglex)){
        delta = angley;
        isVertical = true;
    }
    else{
        delta = anglex;
        isVertical = false; //hori direction
    }
#else
    x = event->x();
    delta = event->delta();
    isVertical = event->orientation() == Qt::Vertical;
    pos = event->pos(); 
#endif

    if (isVertical)
    {
        std::vector<Trace*> traces;
        _view.get_traces(ALL_VIEW, traces);
        // Vertical scrolling
        double shift = 0;

#ifdef Q_OS_DARWIN
        static bool active = true;
        static int64_t last_time;
        if (event->source() == Qt::MouseEventSynthesizedBySystem)
        {
            if (active)
            {
                last_time = QDateTime::currentMSecsSinceEpoch();
                shift = delta > 1.5 ? -1 : delta < -1.5 ? 1 : 0;
            }
            int64_t cur_time = QDateTime::currentMSecsSinceEpoch();
            if (cur_time - last_time > 100)
                active = true;
            else
                active = false;