qt-everywhere-src-5.14.1/qtdeclarative/examples/quick/text/fonts/hello.qml

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import QtQuick 2.0

Rectangle {
    id: screen

    width: 320; height: 480
    color: "black"

    Item {
        id: container
        x: screen.width / 2; y: screen.height / 2

        Text {
            id: text
            anchors.centerIn: parent
            color: "white"
            text: "Hello world!"
            font.pixelSize: 32

//! [letterspacing]
            SequentialAnimation on font.letterSpacing {
                loops: Animation.Infinite;
                NumberAnimation { from: 0; to: 50; easing.type: Easing.InQuad; duration: 3000 }
                ScriptAction {
                    script: {
                        container.y = (screen.height / 4) + (Math.random() * screen.height / 2)
                        container.x = (screen.width / 4) + (Math.random() * screen.width / 2)
                    }
                }
            }
//! [letterspacing]

            SequentialAnimation on opacity {
                loops: Animation.Infinite;
                NumberAnimation { from: 1; to: 0; duration: 2600 }
                PauseAnimation { duration: 400 }
            }
        }
    }
}