Uniapp的movable-view组件，实现悬浮可拖拽功能

页面呈现状态：

将获取文件按钮封装组件，具体代码如下：

<template>
    <movable-area class="fixed-box">
        <movable-view class="fixed-button" direction="all" :inertia="true" x="180" y="-250">
            <view class="menuBox">
                <!-- <u-icon class="mainMenu" name="plus-circle" size="140" @click="declick"></u-icon> -->
                <view class="mainMenu" @click="declick">获取文件</view>
                <view class="posi" :animation="animationData">
                    <button class="menu-btn" hover-class="hClass" open-type="cont