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** This file is part of the documentation of the Qt Toolkit.
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//! [file]
import QtQuick 2.12
import QtQuick.Controls 2.12

Tumbler {
    id: control
    model: 15

    background: Item {
        Rectangle {
            opacity: control.enabled ? 0.2 : 0.1
            border.color: "#000000"
            width: parent.width
            height: 1
            anchors.top: parent.top
        }

        Rectangle {
            opacity: control.enabled ? 0.2 : 0.1
            border.color: "#000000"
            width: parent.width
            height: 1
            anchors.bottom: parent.bottom
        }
    }

    delegate: Text {
        text: qsTr("Item %1").arg(modelData + 1)
        font: control.font
        horizontalAlignment: Text.AlignHCenter
        verticalAlignment: Text.AlignVCenter
        opacity: 1.0 - Math.abs(Tumbler.displacement) / (control.visibleItemCount / 2)
    }

    Rectangle {
        anchors.horizontalCenter: control.horizontalCenter
        y: control.height * 0.4
        width: 40
        height: 1
        color: "#21be2b"
    }

    Rectangle {
        anchors.horizontalCenter: control.horizontalCenter
        y: control.height * 0.6
        width: 40
        height: 1
        color: "#21be2b"
    }
}
//! [file]
