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43 lines
1.6 KiB
JavaScript
43 lines
1.6 KiB
JavaScript
import throttle from 'lodash.throttle'
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import { useCallback, useEffect, useState } from 'react'
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import FloatDarkModeButton from './FloatDarkModeButton'
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import JumpToTopButton from './JumpToTopButton'
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/**
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* 悬浮在右下角的按钮，当页面向下滚动100px时会出现
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* @param {*} param0
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* @returns
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*/
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export default function RightFloatArea({ floatSlot }) {
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const [showFloatButton, switchShow] = useState(false)
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const scrollListener = useCallback(throttle(() => {
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const targetRef = document.getElementById('wrapper')
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const clientHeight = targetRef?.clientHeight
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const scrollY = window.pageYOffset
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const fullHeight = clientHeight - window.outerHeight
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let per = parseFloat(((scrollY / fullHeight) * 100).toFixed(0))
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if (per > 100) per = 100
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const shouldShow = scrollY > 100 && per > 0
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// 右下角显示悬浮按钮
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if (shouldShow !== showFloatButton) {
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switchShow(shouldShow)
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}
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}, 200))
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useEffect(() => {
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document.addEventListener('scroll', scrollListener)
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return () => document.removeEventListener('scroll', scrollListener)
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}, [])
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return (
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<div className={(showFloatButton ? 'opacity-100 ' : 'invisible opacity-0') + ' duration-300 transition-all bottom-12 right-1 fixed justify-end z-20 text-white bg-indigo-500 dark:bg-hexo-black-gray rounded-sm'}>
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<div className={'justify-center flex flex-col items-center cursor-pointer'}>
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<FloatDarkModeButton />
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{floatSlot}
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<JumpToTopButton />
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</div>
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</div>
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)
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}
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