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About

The carousel component is built using the Embla Carousel library.

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Installation

npx shadcn-svelte@next add carousel

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Usage

<script lang="ts">
  import * as Carousel from "$lib/components/ui/carousel/index.js";
</script>

<Carousel.Root>
  <Carousel.Content>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
  </Carousel.Content>
  <Carousel.Previous />
  <Carousel.Next />
</Carousel.Root>

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Examples

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Sizes

To set the size of the items, you can use the basis utility class on the <Carousel.Item />. 
<!-- 33% of the carousel width. -->
<Carousel.Root>
  <Carousel.Content>
    <Carousel.Item class="basis-1/3">...</Carousel.Item>
    <Carousel.Item class="basis-1/3">...</Carousel.Item>
    <Carousel.Item class="basis-1/3">...</Carousel.Item>
  </Carousel.Content>
</Carousel.Root>

<!-- 50% on small screens and 33% on larger screens. -->
<Carousel.Root>
  <Carousel.Content>
    <Carousel.Item class="md:basis-1/2 lg:basis-1/3">...</Carousel.Item>
    <Carousel.Item class="md:basis-1/2 lg:basis-1/3">...</Carousel.Item>
    <Carousel.Item class="md:basis-1/2 lg:basis-1/3">...</Carousel.Item>
  </Carousel.Content>
</Carousel.Root>

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Spacing

To set the spacing between the items, we use a ps-[VALUE] utility on the <Carousel.Item /> and a negative -ms-[VALUE] on the <Carousel.Content />. 
<Carousel.Root>
  <Carousel.Content class="-ms-4">
    <Carousel.Item class="ps-4">...</Carousel.Item>
    <Carousel.Item class="ps-4">...</Carousel.Item>
    <Carousel.Item class="ps-4">...</Carousel.Item>
  </Carousel.Content>
</Carousel.Root>

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Orientation

Use the orientation prop to set the orientation of the carousel. 
<Carousel.Root orientation="vertical | horizontal">
  <Carousel.Content>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
  </Carousel.Content>
</Carousel.Root>

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Options

You can pass options to the carousel using the opts prop. See the Embla Carousel docs for more information. 
<Carousel.Root
  opts={{
    align: "start",
    loop: true,
  }}
>
  <Carousel.Content>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
  </Carousel.Content>
</Carousel.Root>

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API

Use reactive state and the setApi callback to get an instance of the carousel API. 
<script lang="ts">
  import { type CarouselAPI } from "$lib/components/ui/carousel/context.js";
  import * as Carousel from "$lib/components/ui/carousel/index.js";

  let api = $state<CarouselAPI>();
  let current = $state(0);
  const count = $derived(api ? api.scrollSnapList().length : 0);

  $effect(() => {
    if (api) {
      current = api.selectedScrollSnap() + 1;
      api.on("select", () => {
        current = api!.selectedScrollSnap() + 1;
      });
    }
  });
</script>

<Carousel.Root setApi={(emblaApi) => (api = emblaApi)}>
  <Carousel.Content>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
  </Carousel.Content>
</Carousel.Root>

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Events

You can listen to events using the api instance from bind:api. 
<script lang="ts">
  import { type CarouselAPI } from "$lib/components/ui/carousel/context.js";
  import * as Carousel from "$lib/components/ui/carousel/index.js";

  let api = $state<CarouselAPI>();

  $effect(() => {
    if (api) {
      api.on("select", () => {
        // do something
      });
    }
  });
</script>

<Carousel.Root setApi={(emblaApi) => (api = emblaApi)}>
  <Carousel.Content>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
    <Carousel.Item>...</Carousel.Item>
  </Carousel.Content>
</Carousel.Root>

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Plugins

You can use the plugins prop to add plugins to the carousel. 
<script lang="ts">
  import Autoplay from "embla-carousel-autoplay";
  import * as Carousel from "$lib/components/ui/carousel/index.js";
</script>

<Carousel.Root
  plugins={[
    Autoplay({
      delay: 2000,
    }),
  ]}
>
  <!-- ... -->
</Carousel.Root>
See the Embla Carousel docs for more information on using plugins.

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Links

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