From e6ffcee664fcec916a10757b1d4be83ad17a606c Mon Sep 17 00:00:00 2001
From: tangly1024 <tlyong1992@hotmail.com>
Date: Fri, 24 Dec 2021 14:02:41 +0800
Subject: [PATCH] =?UTF-8?q?feature:=20=E6=BB=9A=E5=8A=A8=E8=B0=83=E6=95=B4?=
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---
 components/Header.js | 53 ++++++++++++++------------------------------
 1 file changed, 17 insertions(+), 36 deletions(-)

diff --git a/components/Header.js b/components/Header.js
index 2d29c1a4..ac0849ea 100644
--- a/components/Header.js
+++ b/components/Header.js
@@ -2,8 +2,7 @@ import BLOG from '@/blog.config'
 import { useGlobal } from '@/lib/global'
 import { faAngleDown } from '@fortawesome/free-solid-svg-icons'
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
-import throttle from 'lodash.throttle'
-import { useCallback, useEffect, useState } from 'react'
+import { useEffect, useState } from 'react'
 import Typed from 'typed.js'
 
 /**
@@ -32,32 +31,38 @@ export default function Header () {
   let autoScroll = false
 
   const autoScrollEnd = () => {
-    windowTop = window.scrollY
-    autoScroll = false
+    if (autoScroll) {
+      console.log('结束自动滚动')
+      windowTop = window.scrollY
+      autoScroll = false
+    }
   }
-  const scrollTrigger = throttle(() => {
-    console.log('触发 scrollTrigger')
 
+  const scrollTrigger = () => {
     if (
       (window.scrollY > windowTop) &
       (window.scrollY < window.innerHeight) &
       !autoScroll
     ) {
+      console.log('自动滚下', window.scrollY, windowTop)
       autoScroll = true
-      scrollTo(wrapperTop, autoScrollEnd)
+      window.scrollTo({ top: wrapperTop, behavior: 'smooth' })
+      setTimeout(autoScrollEnd, 500)
     }
     if (
       (window.scrollY < windowTop) &
       (window.scrollY < window.innerHeight) &
       !autoScroll
     ) {
+      console.log('自动滚上')
       autoScroll = true
-      scrollTo(0, autoScrollEnd)
+      window.scrollTo({ top: 0, behavior: 'smooth' })
+      setTimeout(autoScrollEnd, 500)
     }
     windowTop = window.scrollY
 
     updateTopNav()
-  }, 500)
+  }
 
   const updateTopNav = () => {
     if (theme !== 'dark') {
@@ -92,19 +97,19 @@ export default function Header () {
   return (
     <header
       id="header"
-      className="duration-500 w-full bg-cover bg-center md:-mt-14 bg-black"
+      className="duration-500 w-full bg-cover bg-center lg:-mt-14 bg-black"
       style={{
         height: 'calc(100vh + 1px)',
         backgroundImage:
           `linear-gradient(rgba(0, 0, 0, 0.8), rgba(0,0,0,0.2), rgba(0, 0, 0, 0.8) ),url("${BLOG.bannerImage}")`
       }}
     >
-      <div className="absolute flex h-full items-center -mt-14 justify-center w-full text-4xl md:text-7xl text-white">
+      <div className="absolute flex h-full items-center lg:-mt-14 justify-center w-full text-4xl md:text-7xl text-white">
         <div id='typed' className='flex text-center font-serif'/>
       </div>
       <div
         onClick={() => {
-          scrollTo(wrapperTop, autoScrollEnd)
+          window.scrollTo({ top: wrapperTop, behavior: 'smooth' })
         }}
         className="cursor-pointer w-full text-center py-4 text-5xl animate-bounce absolute bottom-10 text-white"
       >
@@ -113,27 +118,3 @@ export default function Header () {
     </header>
   )
 }
-
-/**
-   * Native scrollTo with callback
-   * @param offset - offset to scroll to
-   * @param callback - callback function
-   */
-const scrollTo = throttle((offset, callback) => {
-  const fixedOffset = offset.toFixed()
-  const onScroll = function () {
-    console.log('触发 scrollTo')
-    if (window.pageYOffset.toFixed() === fixedOffset) {
-      window.removeEventListener('scroll', onScroll)
-      window.onscroll = function () {}
-      callback()
-    }
-  }
-
-  window.addEventListener('scroll', onScroll)
-  window.onscroll = onScroll()
-  window.scrollTo({
-    top: offset,
-    behavior: 'smooth'
-  })
-}, 500)