refactor-hexo

themes/hexo/components/RightFloatArea.js

@@ -0,0 +1,42 @@
+import throttle from 'lodash.throttle'
+import { useCallback, useEffect, useState } from 'react'
+import FloatDarkModeButton from './FloatDarkModeButton'
+import JumpToTopButton from './JumpToTopButton'
+
+/**
+ * 悬浮在右下角的按钮，当页面向下滚动100px时会出现
+ * @param {*} param0
+ * @returns
+ */
+export default function RightFloatArea({ floatSlot }) {
+  const [showFloatButton, switchShow] = useState(false)
+  const scrollListener = useCallback(throttle(() => {
+    const targetRef = document.getElementById('wrapper')
+    const clientHeight = targetRef?.clientHeight
+    const scrollY = window.pageYOffset
+    const fullHeight = clientHeight - window.outerHeight
+    let per = parseFloat(((scrollY / fullHeight) * 100).toFixed(0))
+    if (per > 100) per = 100
+    const shouldShow = scrollY > 100 && per > 0
+
+    // 右下角显示悬浮按钮
+    if (shouldShow !== showFloatButton) {
+      switchShow(shouldShow)
+    }
+  }, 200))
+
+  useEffect(() => {
+    document.addEventListener('scroll', scrollListener)
+    return () => document.removeEventListener('scroll', scrollListener)
+  }, [])
+
+  return (
+        <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'}>
+                <div className={'justify-center  flex flex-col items-center cursor-pointer'}>
+                    <FloatDarkModeButton />
+                    {floatSlot}
+                    <JumpToTopButton />
+                </div>
+            </div>
+  )
+}