Method mouseMoveEvent

src/frontend/widgets/qxtspanslider.cpp:602–653

! \reimp */

	\reimp
 */
void QxtSpanSlider::mouseMoveEvent(QMouseEvent* event) {
	if (qxt_d().lowerPressed != QStyle::SC_SliderHandle && qxt_d().upperPressed != QStyle::SC_SliderHandle) {
		event->ignore();
		return;
	}

	QStyleOptionSlider opt;
	qxt_d().initStyleOption(&opt);
	const int m = style()->pixelMetric(QStyle::PM_MaximumDragDistance, &opt, this);
	int newPosition = qxt_d().pixelPosToRangeValue(qxt_d().pick(event->pos()) - qxt_d().offset);
	if (m >= 0) {
		const QRect r = rect().adjusted(-m, -m, m, m);
		if (!r.contains(event->pos()))
			newPosition = qxt_d().position;
	}

	// pick the preferred handle on the first movement
	if (qxt_d().firstMovement) {
		if (qxt_d().lower == qxt_d().upper) {
			if (newPosition < lowerValue()) {
				qxt_d().swapControls();
				qxt_d().firstMovement = false;
			}
		} else
			qxt_d().firstMovement = false;
	}

	if (qxt_d().lowerPressed == QStyle::SC_SliderHandle) {
		if (qxt_d().movement == NoCrossing)
			newPosition = qMin(newPosition, upperValue());
		else if (qxt_d().movement == NoOverlapping)
			newPosition = qMin(newPosition, upperValue() - 1);

		if (qxt_d().movement == FreeMovement && newPosition > qxt_d().upper) {
			qxt_d().swapControls();
			setUpperPosition(newPosition);
		} else
			setLowerPosition(newPosition);
	} else if (qxt_d().upperPressed == QStyle::SC_SliderHandle) {
		if (qxt_d().movement == NoCrossing)
			newPosition = qMax(newPosition, lowerValue());
		else if (qxt_d().movement == NoOverlapping)
			newPosition = qMax(newPosition, lowerValue() + 1);

		if (qxt_d().movement == FreeMovement && newPosition < qxt_d().lower) {
			qxt_d().swapControls();
			setLowerPosition(newPosition);
		} else
			setUpperPosition(newPosition);
	}
	event->accept();
}

/*!
	\reimp