qt-everywhere-src-5.15.1/qtdeclarative/examples/quick/views/listview/highlight.qml

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// This example shows how to create your own highlight delegate for a ListView
// that uses a SpringAnimation to provide custom movement when the
// highlight bar is moved between items.

import QtQuick 2.0
import "content"

Rectangle {
    width: 200; height: 300

    // Define a delegate component. The component will be
    // instantiated for each visible item in the list.
    component PetDelegate: Item {
        id: pet
        width: 200; height: 55

        required property int index
        required property string name
        required property string type
        required property int age

        Column {
            SmallText { text: 'Name: ' + pet.name }
            SmallText { text: 'Type: ' + pet.type }
            SmallText { text: 'Age: ' + pet.age }
        }
        // indent the item if it is the current item
        states: State {
            name: "Current"
            when: pet.ListView.isCurrentItem
            PropertyChanges { target: pet; x: 20 }
        }
        transitions: Transition {
            NumberAnimation { properties: "x"; duration: 200 }
        }
        MouseArea {
            anchors.fill: parent
            onClicked: pet.ListView.view.currentIndex = pet.index
        }
    }

//! [0]
    // Define a highlight with customized movement between items.
    component HighlightBar : Rectangle {
        width: 200; height: 50
        color: "#FFFF88"
        y: listView.currentItem.y
        Behavior on y { SpringAnimation { spring: 2; damping: 0.1 } }
    }

    ListView {
        id: listView
        width: 200; height: parent.height
        x: 30

        model: PetsModel {}
        delegate: PetDelegate {}
        focus: true

        // Set the highlight delegate. Note we must also set highlightFollowsCurrentItem
        // to false so the highlight delegate can control how the highlight is moved.
        highlight: HighlightBar {}
        highlightFollowsCurrentItem: false
    }
//! [0]
}