85 lines
2.6 KiB
TypeScript
Executable File
85 lines
2.6 KiB
TypeScript
Executable File
// src/components/CarouselDemo.tsx
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import * as React from "react";
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import Autoplay from "embla-carousel-autoplay";//实现轮播图的自动播放功能
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import { Card, CardContent } from "@/ui/card";
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import {
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Carousel,//主体
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CarouselContent,//内容容器
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CarouselItem,//单个轮播项
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CarouselNext,
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CarouselPrevious,
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type CarouselApi,
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} from "@/ui/carousel";
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export function CarouselDemo() {
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const [api, setApi] = React.useState<CarouselApi>();
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const [current, setCurrent] = React.useState(0);
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const [count, setCount] = React.useState(0);
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const totalSlides = 6;
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React.useEffect(() => {
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if (!api) return;
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setCount(api.scrollSnapList().length);
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setCurrent(api.selectedScrollSnap());//获取当前选中的轮播项的索引
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api.on("select", () => {
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setCurrent(api.selectedScrollSnap());
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});
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}, [api]);//当api改变时，执行此函数 水平居中 循环 自动播放 回传状态
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return (
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<div className="relative w-full max-w-4xl mx-auto">
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<Carousel
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opts={{
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loop: true,
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}}
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plugins={[
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Autoplay({
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delay: 3000,
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stopOnInteraction: false,
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}),
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]}
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setApi={setApi}
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>
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<CarouselContent className="h-full w-full">
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{Array.from({ length: totalSlides }).map((_, index) => (
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<CarouselItem key={index} className="w-full h-full">
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<div className="p-1">
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<Card>
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<CardContent className="flex aspect-square items-center justify-center ">
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<div
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className="w-full h-full"
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style={{
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backgroundImage: "url('/public/images/header.png')",//背景图片可修改
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backgroundSize: '100% 100%',
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}}
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>
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</div>
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</CardContent>
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</Card>
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</div>
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</CarouselItem>
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))}
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</CarouselContent>
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<CarouselPrevious className="absolute left-2 top-1/2 -translate-y-1/2 z-10" />
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<CarouselNext className="absolute right-2 top-1/2 -translate-y-1/2 z-10" />
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</Carousel>
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{/* 分页指示器 - 右下角 */}
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<div className="absolute bottom-4 right-4 flex gap-2 z-10">
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{Array.from({ length: count }).map((_, index) => (
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<button
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key={index}
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onClick={() => api?.scrollTo(index)}
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className={`h-2 w-2 rounded-full transition-colors ${
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index === current ? "bg-black" : "bg-black/50"
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}`}
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/>
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))}
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</div>
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</div>
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);
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} |