Method handleWheelEvent

kdevplatform/util/zoomcontroller.cpp:117–132

}

bool ZoomController::handleWheelEvent(QWheelEvent* event)
{
    Q_ASSERT(event);

    if (!(event->modifiers() & Qt::ControlModifier)) {
        return false;
    }

    constexpr double minStandardDelta{120};
    const QPoint delta = event->angleDelta();
    const double scale{(delta.x() + delta.y()) / minStandardDelta};

    zoomBy(scale);
    event->accept();
    return true;
}

void ZoomController::zoomIn()
{