Method zoom

src/frontend/datapicker/DatapickerImageView.cpp:389–400

}

void DatapickerImageView::zoom(int numSteps) {
	m_numScheduledScalings += numSteps;
	if (m_numScheduledScalings * numSteps < 0) // if user moved the wheel in another direction, we reset previously scheduled scalings
		m_numScheduledScalings = numSteps;

	auto* anim = new QTimeLine(350, this);
	anim->setUpdateInterval(20);

	connect(anim, &QTimeLine::valueChanged, this, &DatapickerImageView::scalingTime);
	connect(anim, &QTimeLine::finished, this, &DatapickerImageView::animFinished);
	anim->start();
}

void DatapickerImageView::scalingTime() {
	qreal factor = 1.0 + qreal(m_numScheduledScalings) / 300.0;