/******************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Quick Ultralite module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
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** $QT_END_LICENSE$
**
******************************************************************************/

import QtQuick 2.15
import QtQuickUltralite.Layers 2.0

ImageLayer {
    id: root

    property real vx: 0
    property real vy: 0

    property Item container

    Component.onCompleted: {
        root.x = 1 + Math.floor(Math.random() * (container.width - root.width - 2))
        root.y = 1 + Math.floor(Math.random() * (container.height - root.height - 2))

        vx = Math.random() > 0.5 ? 1 : -1
        vy = Math.random() > 0.5 ? 1 : -1
    }

    onTChanged: {
        root.x += vx
        root.y += vy
        if (root.y <= 0 || root.y >= (container.height - root.height))
          root.vy = -root.vy
        if (root.x <= 0 || root.x >= (container.width - root.width))
          root.vx = -root.vx
    }

    property real t: 0
    NumberAnimation on t {
        running: true
        loops: Animation.Infinite
        from: 0
        to: 1
    }
}