容器文本翻转

// components/ui/container-text-flip.tsx
"use client";

import React, { useState, useEffect, useId } from "react";

import { motion } from "motion/react";
import { cn } from "@/utils/cn";

export interface ContainerTextFlipProps {
  /** 动画中循环切换的单词数组 */
  words?: string[];
  /** 单词切换之间的时间，单位为毫秒 */
  interval?: number;
  /** 应用于容器的额外 CSS 类 */
  className?: string;
  /** 应用于文本的额外 CSS 类 */
  textClassName?: string;
  /** 过渡动画的持续时间，单位为毫秒 */
  animationDuration?: number;
}

export function ContainerTextFlip({
  words = ["更好", "现代", "美观", "出色"],
  interval = 3000,
  className,
  textClassName,
  animationDuration = 700,
}: ContainerTextFlipProps) {
  const id = useId();
  const [currentWordIndex, setCurrentWordIndex] = useState(0);
  const [width, setWidth] = useState(100);
  const textRef = React.useRef(null);

  const updateWidthForWord = () => {
    if (textRef.current) {
      // 为文本宽度添加一些内边距（每侧 30px）
      // @ts-ignore
      const textWidth = textRef.current.scrollWidth + 30;
      setWidth(textWidth);
    }
  };

  useEffect(() => {
    // 每当单词变化时更新宽度
    updateWidthForWord();
  }, [currentWordIndex]);

  useEffect(() => {
    const intervalId = setInterval(() => {
      setCurrentWordIndex((prevIndex) => (prevIndex + 1) % words.length);
      // 宽度将在依赖 currentWordIndex 的 effect 中更新
    }, interval);

    return () => clearInterval(intervalId);
  }, [words, interval]);

  return (
    <motion.p
      layout
      layoutId={`words-here-${id}`}
      animate={{ width }}
      transition={{ duration: animationDuration / 2000 }}
      className={cn(
        "relative inline-block rounded-lg pt-2 pb-3 text-center text-4xl font-bold text-black md:text-7xl dark:text-white",
        "[background:linear-gradient(to_bottom,#f3f4f6,#e5e7eb)]",
        "shadow-[inset_0_-1px_#d1d5db,inset_0_0_0_1px_#d1d5db,_0_4px_8px_#d1d5db]",
        "dark:[background:linear-gradient(to_bottom,#374151,#1f2937)]",
        "dark:shadow-[inset_0_-1px_#10171e,inset_0_0_0_1px_hsla(205,89%,46%,.24),_0_4px_8px_#00000052]",
        className,
      )}
      key={words[currentWordIndex]}
    >
      <motion.div
        transition={{
          duration: animationDuration / 1000,
          ease: "easeInOut",
        }}
        className={cn("inline-block", textClassName)}
        ref={textRef}
        layoutId={`word-div-${words[currentWordIndex]}-${id}`}
      >
        <motion.div className="inline-block">
          {words[currentWordIndex].split("").map((letter, index) => (
            <motion.span
              key={index}
              initial={{
                opacity: 0,
                filter: "blur(10px)",
              }}
              animate={{
                opacity: 1,
                filter: "blur(0px)",
              }}
              transition={{
                delay: index * 0.02,
              }}
            >
              {letter}
            </motion.span>
          ))}
        </motion.div>
      </motion.div>
    </motion.p>
  );
}