slowing down a Listwidget Verticalscrollbar

[supratik123]

I am using a listwidget vertical scrollbar to have an alarm clock kind of thing, where i can set values of minutes and seconds. The problem i am facing is the scroll bar is very fast even with trackpad of laptop as well as the touch screen device on which my code is deployed. It reaches 0 -30 at one scroll.
i tried to catch the slider released signal and slow it down but the signal is not getting emitted.
all i want is to slow the scroller down when user release the scroller on screen.

Attaching my code

listWidget1 = new QListWidget(this);
        //listWidget1->setVerticalScrollMode(QAbstractItemView::ScrollMode::ScrollPerPixel);
        QFont number1Font("DINCond-Bold",28,QFont::Medium);
        //$$
        QFont userScroller("DINCond-Bold",28,QFont::Medium);
        for(int i=0; i<30; i++)
        {
            QListWidgetItem *item;
            if(i < 10)
                item = new QListWidgetItem("0" + QString::number(i));
            else
                item = new QListWidgetItem(QString::number(i));

            item->setFont(userScroller);
            listWidget1->addItem(item);
            item->setTextAlignment(Qt::AlignRight);
            if(i == 1)
                item->setFont(userScroller);

        }
        listWidget1->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
        double scalingFactor = 0.5; // Reduce the scrolling speed by half
        int itemIndex = static_cast<int>(listWidget1->verticalScrollBar()->value() * scalingFactor / listWidget1->sizeHintForRow(0));
        listWidget1->setCurrentRow(itemIndex);
        listWidget1->verticalScrollBar()->setSingleStep(1);
        listWidget1->setFocusPolicy(Qt::NoFocus);
        listWidget1->setSelectionMode(QAbstractItemView::NoSelection);


        //$$
        listWidget1->setStyleSheet("background:rgba(0,0,0,0.025);border-radius : 0px;border:0px;color: rgba(255, 255, 255, 0.2);");
        listWidget1->setSpacing(25);


        listWidget1->show();
        listWidget1->setAutoScroll(false);
        listWidget1->setDragEnabled(false);
        listWidget1->setAcceptDrops(false);

        qDebug() << "before list widget 2";

        listWidget2 = new QListWidget(this);
        for(int i=0; i<60; i++)
        {
            QListWidgetItem *item;
            if(i < 10)
                item = new QListWidgetItem("0" + QString::number(i));
            else
                item = new QListWidgetItem(QString::number(i));
            listWidget2->addItem(item);
            item->setFlags(Qt::ItemIsEnabled);
            //$$
            item->setFont(userScroller);
            item->setTextAlignment(Qt::AlignLeft);
        }

        listWidget1->setAttribute(Qt::WA_AcceptTouchEvents,true);
        listWidget2->setFocusPolicy(Qt::NoFocus);
        listWidget2->setSelectionMode(QAbstractItemView::NoSelection);
        listWidget1->setFixedHeight(350);

        listWidget2->setAttribute(Qt::WA_AcceptTouchEvents,true);

        QScroller::grabGesture(listWidget1, QScroller::LeftMouseButtonGesture);
        QScroller::grabGesture(listWidget2, QScroller::LeftMouseButtonGesture);
        // QScroller::grabGesture(listWidget1, QScroller::ScrollerGestureType::TouchGesture);
        // QScroller::grabGesture(listWidget2, QScroller::ScrollerGestureType::TouchGesture);

        listWidget2->setFixedHeight(350);
    
        connect(listWidget1->verticalScrollBar(), &QScrollBar::sliderReleased, [=]() {
        qDebug() << "User released the slider in listWidget1";

        //     // Adjust QScroller properties for slow deceleration after release
             QScroller *scroller = QScroller::scroller(listWidget1->viewport());
        /    QScrollerProperties scrollerProperties = scroller->scrollerProperties();

           // Slow down scrolling when the user releases the slider
            scrollerProperties.setScrollMetric(QScrollerProperties::DecelerationFactor, 0.05);  // Slow deceleration
            scrollerProperties.setScrollMetric(QScrollerProperties::MaximumVelocity, 0.3);      // Reduce max velocity
          scroller->setScrollerProperties(scrollerProperties);
        });

         connect(listWidget1->verticalScrollBar(), &QScrollBar::actionTriggered, this, [=](int action) {
             qDebug() << "Action triggered: " << action;

             if (action == QAbstractSlider::SliderMove) {
                 // Get the current position of the slider
                 int currentPos = listWidget1->verticalScrollBar()->sliderPosition();

                // Apply a deceleration factor (adjust according to the desired slowdown effect)
                double decelerationFactor = 0.9; // Slow down by 50%
                int slowedPosition = static_cast<int>(currentPos * decelerationFactor);

                 // Set the slowed position (smaller increments make the scroll feel slower)
                 listWidget1->verticalScrollBar()->setSliderPosition(slowedPosition);

                 qDebug() << "Slowed position: " << slowedPosition;
             }
         });
        QHBoxLayout *listWidgetLayout1 = new QHBoxLayout();
        listWidgetLayout1->addWidget(listWidget1);
        listWidgetLayout1->addWidget(scrollBar1);

        QHBoxLayout *listWidgetLayout2 = new QHBoxLayout();
        listWidgetLayout2->addWidget(listWidget2);
        listWidgetLayout2->addWidget(scrollBar2);

        listWidgetLayout4 = new QHBoxLayout();
        listWidgetLayout4->addLayout(listWidgetLayout1);
        listWidgetLayout4->addLayout(listWidgetLayout2);