QSlider should be able to ensure its value increased by 1 step per 1 mouse wheel tick

I have a QSlider with boundaries [-50;50], step = 1, and page step = 5.

Unfortunately, I got complains from users that my slider is hard to use with mouse wheel as it increase/decrease by 3 instead of 1 per each wheel tick. The problem isn't affect trackpads (value increased by 1 ) - only mouse users. I found out, that 3 lines per wheel tick - is a default system setting for Ubuntu and Windows for a regular mouse.

My suggestion is to add functionality to QSlider that allows it to ignore or override system mouse wheel sensitivity value. Currently I've achieved desired behaviour (slider value changes by 1 even if wheel setting is 3 lines per wheel turn) with interception of its wheel event and following code:

int sum_y = 0;

bool MyWidget::eventFilter(QObject *obj, QEvent *event)
{
    if (obj && event && event->type() == QEvent::Wheel) {
        QWheelEvent* e = (QWheelEvent*) event;
        if (e->modifiers() == Qt::NoModifier) {
            const QPoint& angleDelta = e->angleDelta();
            if (!angleDelta.isNull()) {
                sum_y += angleDelta.y();
                if (abs(sum_y) >= 30) {
                    QSlider* slider= (QSlider*) obj;
                    int dy = (sum_y > 0) ? slider->singleStep() : -1 *slider ->singleStep();
                    slider->setValue(slider->value() + dy);
                    sum_y = 0;
                    e->accept();
                    return true;
                }
            }
        }
    }
    return false;
}

Here static sum_y is needed to avoid making trackpad's behaviour too sensitive.