shadcn-vue/apps/www/src/content/docs/components/carousel.md
Sadegh Barati f9ab01e11b
docs: fix new line-number, fix highlight color on txt md block in shikiji (#299)
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---
title: Carousel
description: A carousel with motion and swipe built using Embla.
source: apps/www/src/lib/registry/default/ui/carousel
primitive: https://www.embla-carousel.com/api
---
<ComponentPreview name="CarouselDemo" />
## About
The carousel component is built using the [Embla Carousel](https://www.embla-carousel.com/) library.
## Installation
```bash
npx shadcn-vue@latest add carousel
```
## Usage
```vue
<script setup lang="ts">
import {
Carousel,
CarouselContent,
CarouselItem,
CarouselNext,
CarouselPrevious,
} from '@/components/ui/carousel'
</script>
<template>
<Carousel>
<CarouselContent>
<CarouselItem>...</CarouselItem>
<CarouselItem>...</CarouselItem>
<CarouselItem>...</CarouselItem>
</CarouselContent>
<CarouselPrevious />
<CarouselNext />
</Carousel>
</template>
```
## Examples
### Sizes
To set the size of the items, you can use the `basis` utility class on the `<CarouselItem />`.
<ComponentPreview name="CarouselSize" />
Example
```vue:line-numbers title="Example" {4-6}
// 33% of the carousel width.
<Carousel>
<CarouselContent>
<CarouselItem class="basis-1/3">...</CarouselItem>
<CarouselItem class="basis-1/3">...</CarouselItem>
<CarouselItem class="basis-1/3">...</CarouselItem>
</CarouselContent>
</Carousel>
```
Responsive
```vue:line-numbers title="Responsive" {4-6}
// 50% on small screens and 33% on larger screens.
<Carousel>
<CarouselContent>
<CarouselItem class="md:basis-1/2 lg:basis-1/3">...</CarouselItem>
<CarouselItem class="md:basis-1/2 lg:basis-1/3">...</CarouselItem>
<CarouselItem class="md:basis-1/2 lg:basis-1/3">...</CarouselItem>
</CarouselContent>
</Carousel>
```
### Spacing
To set the spacing between the items, we use a `pl-[VALUE]` utility on the `<CarouselItem />` and a negative `-ml-[VALUE]` on the `<CarouselContent />`.
<Callout class="mt-6">
**Why:** I tried to use the `gap` property or a `grid` layout on the `
CarouselContent` but it required a lot of math and mental effort to get the
spacing right. I found `pl-[VALUE]` and `-ml-[VALUE]` utilities much easier to
use.
<br/><br/>
You can always adjust this in your own project if you need to.
</Callout>
<ComponentPreview name="CarouselSpacing" />
Example
```vue:line-numbers /-ml-4/ /pl-4/
<template>
<Carousel>
<CarouselContent class="-ml-4">
<CarouselItem class="pl-4">
...
</CarouselItem>
<CarouselItem class="pl-4">
...
</CarouselItem>
<CarouselItem class="pl-4">
...
</CarouselItem>
</CarouselContent>
</Carousel>
</template>
```
Responsive
```vue:line-numbers /-ml-2/ /pl-2/ /md:-ml-4/ /md:pl-4/
<template>
<Carousel>
<CarouselContent class="-ml-2 md:-ml-4">
<CarouselItem class="pl-2 md:pl-4">
...
</CarouselItem>
<CarouselItem class="pl-2 md:pl-4">
...
</CarouselItem>
<CarouselItem class="pl-2 md:pl-4">
...
</CarouselItem>
</CarouselContent>
</Carousel>
</template>
```
### Orientation
Use the `orientation` prop to set the orientation of the carousel.
<ComponentPreview name="CarouselOrientation" />
```vue
<Carousel orientation="vertical | horizontal">
...
</Carousel>
```
## Options
You can pass options to the carousel using the `opts` prop. See the [Embla Carousel docs](https://www.embla-carousel.com/api/options/) for more information.
```vue:line-numbers {3-6}
<template>
<Carousel
:opts="{
align: 'start',
loop: true,
}"
>
<CarouselContent>
<CarouselItem>...</CarouselItem>
<CarouselItem>...</CarouselItem>
<CarouselItem>...</CarouselItem>
</CarouselContent>
</Carousel>
</template>
```
## API
### Method 1
Use the `@init-api` emit method on `<Carousel />` component to set the instance of the API.
<ComponentPreview name="CarouselApi" />
### Method 2
You can access it through setting a template ref on the `<Carousel />` component.
```vue:line-numbers {2,5,9}
<script setup>
const carouselContainerRef = ref<InstanceType<typeof Carousel> | null>(null)
function accessApi() {
carouselContainerRef.value?.carouselApi.on('select', () => {})
}
</script>
<template>
<Carousel ref="carouselContainerRef">
...
</Carousel>
</template>
```
## Events
You can listen to events using the API. To get the API instance use the `@init-api` emit method on the `<Carousel />` component
```vue:line-numbers {5,7-9,25}
<script setup>
import { nextTick, ref, watch } from 'vue'
import { useCarousel } from '@/components/ui/carousel'
const api = ref<CarouselApi>()
function setApi(val: CarouselApi) {
api.value = val
}
const stop = watch(api, (api) => {
if (!api)
return
// Watch only once or use watchOnce() in @vueuse/core
nextTick(() => stop())
api.on('select', () => {
// Do something on select.
})
})
</script>
<template>
<Carousel @init-api="setApi">
...
</Carousel>
</template>
```
See the [Embla Carousel docs](https://www.embla-carousel.com/api/events/) for more information on using events.
## Slot Props
You can get the reactive slot props like `carouselRef, canScrollNext..Prev, scrollNext..Prev` using the `v-slot` directive in the `<Carousel v-slot="slotProps" />` component to extend the functionality.
```vue:line-numbers {2}
<template>
<Carousel v-slot="{ canScrollNext, canScrollPrev }">
...
<CarouselPrevious v-if="canScrollPrev" />
<CarouselNext v-if="canScrollNext" />
</Carousel>
</template>
```
## Plugins
You can use the `plugins` prop to add plugins to the carousel.
```bash
npm i embla-carousel-autoplay
```
```vue:line-numbers {2,8-10}
<script setup lang="ts">
import Autoplay from 'embla-carousel-autoplay'
</script>
<template>
<Carousel
class="w-full max-w-xs"
:plugins="[Autoplay({
delay: 2000,
})]"
>
...
</Carousel>
</template>
```
<ComponentPreview name="CarouselPlugin" />
See the [Embla Carousel docs](https://www.embla-carousel.com/api/plugins/) for more information on using plugins.