void SomeSlider::mouseMoveEvent(QMouseEvent* event)
{
	QStyleOptionSlider opt;
	initStyleOption(&opt);

	int left = 0;
	int right = width();

	int newPosition = QStyle::sliderValueFromPosition(minimum(), maximum(), event->pos().x() - left, right - left, opt.upsideDown);
	setSliderPosition(newPosition);
}