theme-commerce

themes/commerce/components/Progress.js

@@ -0,0 +1,44 @@
+import { useEffect, useState } from 'react'
+import { isBrowser } from '@/lib/utils'
+
+/**
+ * 顶部页面阅读进度条
+ * @returns {JSX.Element}
+ * @constructor
+ */
+const Progress = ({ targetRef, showPercent = true }) => {
+  const currentRef = targetRef?.current || targetRef
+  const [percent, changePercent] = useState(0)
+  const scrollListener = () => {
+    const target = currentRef || (isBrowser && document.getElementById('article-wrapper'))
+    if (target) {
+      const clientHeight = target.clientHeight
+      const scrollY = window.pageYOffset
+      const fullHeight = clientHeight - window.outerHeight
+      let per = parseFloat(((scrollY / fullHeight) * 100).toFixed(0))
+      if (per > 100) per = 100
+      if (per < 0) per = 0
+      changePercent(per)
+    }
+  }
+
+  useEffect(() => {
+    document.addEventListener('scroll', scrollListener)
+    return () => document.removeEventListener('scroll', scrollListener)
+  }, [])
+
+  return (
+    <div className="h-4 w-full shadow-2xl bg-gray-700 rounded-sm">
+      <div
+        className="h-4 bg-red-600 duration-200 rounded-sm"
+        style={{ width: `${percent}%` }}
+      >
+        {showPercent && (
+          <div className="text-right text-white text-xs">{percent}%</div>
+        )}
+      </div>
+    </div>
+  )
+}
+
+export default Progress