# Carousel · JGuang UI

> A carousel with motion and swipe built using Embla.

- Page: https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel
- Based on: shadcn/ui documentation (MIT) @ bc0705384b51252af26dcc65425b216bf5eb063c

> Example `carousel-demo`: interactive preview on https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel


## About

The carousel component is built using the [Embla Carousel](https://www.embla-carousel.com/) library.

## Installation


  

**Command**


  

**Manual**


```text
Use the JGuang UI Registry URL provided on /systems/jguang-ui#install.
```


### Install the following dependencies:


```bash
npm install embla-carousel-react
```


### Copy and paste the following code into your project.


[View complete source: components/ui/carousel.tsx](/r/jguang-ui/base/carousel.json)


### Update the import paths to match your project setup.


## Usage

```tsx showLineNumbers
import {
  Carousel,
  CarouselContent,
  CarouselItem,
  CarouselNext,
  CarouselPrevious,
} from "@/components/ui/carousel"
```

```tsx showLineNumbers
<Carousel>
  <CarouselContent>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
  </CarouselContent>
  <CarouselPrevious />
  <CarouselNext />
</Carousel>
```

## Composition

Use the following composition to build a `Carousel`:

```text
Carousel
├── CarouselContent
│   ├── CarouselItem
│   └── CarouselItem
├── CarouselPrevious
└── CarouselNext
```

## Sizes

To set the size of the items, you can use the `basis` utility class on the ``.


> Example `carousel-size`: interactive preview on https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel


```tsx showLineNumbers {4-6}
// 33% of the carousel width.
<Carousel>
  <CarouselContent>
    <CarouselItem className="basis-1/3">...</CarouselItem>
    <CarouselItem className="basis-1/3">...</CarouselItem>
    <CarouselItem className="basis-1/3">...</CarouselItem>
  </CarouselContent>
</Carousel>
```

```tsx showLineNumbers {4-6}
// 50% on small screens and 33% on larger screens.
<Carousel>
  <CarouselContent>
    <CarouselItem className="md:basis-1/2 lg:basis-1/3">...</CarouselItem>
    <CarouselItem className="md:basis-1/2 lg:basis-1/3">...</CarouselItem>
    <CarouselItem className="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 `` and a negative `-ml-[VALUE]` on the ``.


> Example `carousel-spacing`: interactive preview on https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel


```tsx showLineNumbers /-ml-4/ /pl-4/
<Carousel>
  <CarouselContent className="-ml-4">
    <CarouselItem className="pl-4">...</CarouselItem>
    <CarouselItem className="pl-4">...</CarouselItem>
    <CarouselItem className="pl-4">...</CarouselItem>
  </CarouselContent>
</Carousel>
```

```tsx showLineNumbers /-ml-2/ /pl-2/ /md:-ml-4/ /md:pl-4/
<Carousel>
  <CarouselContent className="-ml-2 md:-ml-4">
    <CarouselItem className="pl-2 md:pl-4">...</CarouselItem>
    <CarouselItem className="pl-2 md:pl-4">...</CarouselItem>
    <CarouselItem className="pl-2 md:pl-4">...</CarouselItem>
  </CarouselContent>
</Carousel>
```

## Orientation

Use the `orientation` prop to set the orientation of the carousel.


> Example `carousel-orientation`: interactive preview on https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel


```tsx showLineNumbers /vertical | horizontal/
<Carousel orientation="vertical | horizontal">
  <CarouselContent>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
  </CarouselContent>
</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.

```tsx showLineNumbers {2-5}
<Carousel
  opts={{
    align: "start",
    loop: true,
  }}
>
  <CarouselContent>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
  </CarouselContent>
</Carousel>
```

## API

Use a state and the `setApi` prop to get an instance of the carousel API.


> Example `carousel-api`: interactive preview on https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel


```tsx showLineNumbers {1,4,22}
import { type CarouselApi } from "@/components/ui/carousel"

export function Example() {
  const [api, setApi] = React.useState<CarouselApi>()
  const [current, setCurrent] = React.useState(0)
  const [count, setCount] = React.useState(0)

  React.useEffect(() => {
    if (!api) {
      return
    }

    setCount(api.scrollSnapList().length)
    setCurrent(api.selectedScrollSnap() + 1)

    api.on("select", () => {
      setCurrent(api.selectedScrollSnap() + 1)
    })
  }, [api])

  return (
    <Carousel setApi={setApi}>
      <CarouselContent>
        <CarouselItem>...</CarouselItem>
        <CarouselItem>...</CarouselItem>
        <CarouselItem>...</CarouselItem>
      </CarouselContent>
    </Carousel>
  )
}
```

## Events

You can listen to events using the api instance from `setApi`.

```tsx showLineNumbers {1,4-14,16}
import { type CarouselApi } from "@/components/ui/carousel"

export function Example() {
  const [api, setApi] = React.useState<CarouselApi>()

  React.useEffect(() => {
    if (!api) {
      return
    }

    api.on("select", () => {
      // Do something on select.
    })
  }, [api])

  return (
    <Carousel setApi={setApi}>
      <CarouselContent>
        <CarouselItem>...</CarouselItem>
        <CarouselItem>...</CarouselItem>
        <CarouselItem>...</CarouselItem>
      </CarouselContent>
    </Carousel>
  )
}
```

See the [Embla Carousel docs](https://www.embla-carousel.com/api/events/) for more information on using events.

## Plugins

You can use the `plugins` prop to add plugins to the carousel.

```ts showLineNumbers {1,6-10}
import Autoplay from "embla-carousel-autoplay"

export function Example() {
  return (
    <Carousel
      plugins={[
        Autoplay({
          delay: 2000,
        }),
      ]}
    >
      // ...
    </Carousel>
  )
}
```


> Example `carousel-plugin`: interactive preview on https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel


## RTL

To enable RTL support in JGuang UI, see the [RTL configuration guide](/systems/jguang-ui/docs/rtl).


> Example `carousel-rtl`: interactive preview on https://jiguang132.com/systems/jguang-ui/docs/components/base/carousel


When localizing the carousel for RTL languages, you need to set the `direction` option in the `opts` prop to match the text direction. This ensures the carousel scrolls in the correct direction.

```tsx showLineNumbers {2-5}
<Carousel
  dir={dir}
  opts={{
    direction: dir,
  }}
>
  <CarouselContent>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
    <CarouselItem>...</CarouselItem>
  </CarouselContent>
  <CarouselPrevious className="rtl:rotate-180" />
  <CarouselNext className="rtl:rotate-180" />
</Carousel>
```

The `direction` option accepts `"ltr"` or `"rtl"` and should match the `dir` prop value. You may also want to rotate the navigation buttons using the `rtl:rotate-180` class to ensure they point in the correct direction.

## API Reference

See the [Embla Carousel docs](https://www.embla-carousel.com/api/) for more information on props and plugins.

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Index of all JGuang resources: https://jiguang132.com/llms.txt