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Blottie

Lottie component for Vue 3 / Nuxt 3

Blottie is the verb blottir in french meaning snuggle (yes I was looking for a word to respect the Vue tradition).

Features

Installation

npm i -D blottie

# yarn
yarn add -D blottie

# pnpm
pnpm add -D blottie

#bun
bun add -D blottie

Usage

Component

<script setup lang="ts">
import type { AnimationItem } from 'lottie-web'
import { Blottie, type BlottieExpose } from 'blottie'

const blottie = ref<BlottieExpose>()

function onFrame(anim?: AnimationItem) {
  frame.value = Math.round(anim ? anim.currentFrame : 0)
}
function onReady(anim?: AnimationItem) {
  anim?.play()
}
</script>

<template>
  <Blottie
    ref="blottie"
    :lottie="{
      loop: true,
      renderer: 'svg',
      path: '/my-lottie-anim.json',
    }"
    @ready="onReady"
    @enter-frame="onFrame"
  />
</template>

It is recommended to use the renderer option to use the correct version of Lottie to reduce the size of Lottie. If you don't use the renderer prop, it will use the default LottiePlayer which can be a little heavier in size. The lighter option provided by Lottie is the light version which is loaded when you set the svg renderer.

Check the demo folder for examples of usage.

Props

The Blottie component accepts all loadAnimation options through lottie prop. You can pass a Lottie Animation JSON via the path option (relative or absolute link) or directly by importing the json file as an object in the animationData option.

By default, Blottie will load the lighter version (light) of Lottie for the renderer you choose. If necessary, you can enforce the lottie player with the player option (inside the lottie prop) : canvas_worker, canvas, light_canvas, html, light_html, light, svg, worker or default.

<script lang="ts" setup>
import { Blottie } from 'blottie'
</script>

<template>
  <Blottie
    :lottie="{
      player: 'svg',
      renderer: 'svg',
      path: '/my-lottie-anim.json',
    }"
  />
</template>

If needed, you can access the lottie player before the lottie loadAnimation method. You can use the before-init prop allowing you to pass an asynchrone callback with the player as an argument (check the example below).

This is necessary for allowing to use setLocationHref to fix Safari issue.

<script setup lang="ts">
import type { LottiePlayer } from 'lottie-web'
import { Blottie } from 'blottie'

async function beforeInit(player: LottiePlayer) {
  console.log(player)
}
</script>

<template>
  <div>
    <Blottie
      class="animation"
      :before-init="beforeInit"
      :lottie="{
        path: 'vue-js.json',
        autoplay: true,
      }"
    />
  </div>
</template>

An additional prop container-tag is available to change the default div tag container.

<script lang="ts" setup>
import { Blottie } from 'blottie'
</script>

<template>
  <Blottie
    container-tag="main"
    :lottie="{
      renderer: 'svg',
      path: '/my-lottie-anim.json',
    }"
  />
</template>

Events

The Blottie component exposes all lottie events. On each events, you can access to anim allowing you to control your animation, lottie to control the player and the HTML container.

import type { AnimationItem, LottiePlayer } from 'lottie-web'

function onFrame(anim?: AnimationItem, lottie?: LottiePlayer, container?: HTMLElement) {
  frame.value = Math.round(anim ? anim.currentFrame : 0)
}

Expose LottiePlayer / Anim / Container

You can access to all the Blottie data (lottie player, animation and container) exposed using ref attribute on the Blottie component. You can do a custom player for example.

<script setup lang="ts">
import type { AnimationItem, LottiePlayer } from 'lottie-web'
import { ref } from 'vue'
import { Blottie, type BlottieExpose } from 'blottie'

const blottie = ref<BlottieExpose>()
</script>

<template>
  <div>
    <Blottie
      ref="blottie"
      class="animation"
      :lottie="{
        animationData: 'animationData',
        renderer: 'canvas',
      }"
    />
    <div v-if="blottie && blottie.anim" class="controls">
      <progress
        :value="blottie.anim.currentFrame"
        :max="blottie.anim.totalFrames"
      />
      <button @click="blottie?.anim.play()">
        Play
      </button>
      <button @click="blottie?.anim.pause()">
        Pause
      </button>
      <button @click="blottie?.anim.stop()">
        Stop
      </button>
      <button
        @click="
          blottie?.anim.setDirection(
            blottie?.anim.playDirection === -1 ? 1 : -1,
          )
        "
      >
        Reverse
      </button>
    </div>
  </div>
</template>

Slot

You can use the slot loading to insert content inside the container to wait the display like a temporary fallback.

<script lang="ts" setup>
import { Blottie } from 'blottie'
</script>

<template>
  <Blottie
    :lottie="{
      autoplay: true,
      loop: true,
      path: '/my-lottie-anim.json',
    }"
  >
    <template #loading>
      Loading...
    </template>
  </Blottie>
</template>

Composable

Since 2.0, you can use the composable useBlottie. This allowing you full control to create a custom component if you need it.

The first argument is a template ref. The second argument is an object accepting all loadAnimation options.

<script setup lang="ts">
import { useBlottie } from 'blottie'
const el = ref<HTMLElement | null>(null)
const { lottie, anim } = useBlottie(el, {
  player: 'svg',
  renderer: 'svg',
  path: '/my-lottie-anim.json',
})
</script>

<template>
  <div>
    <div ref="el" class="blottie" />
    <button @click="lottie.play()">
      Play
    </button>
  </div>
</template>

Migration from 1.0 to 2.0

All Lottie options are now move into lottie attribute to use typings from lottie (and not a version provided by Blottie).

For example, if you have this

<template>
  <Blottie
    class="animation"
    path="https://assets6.lottiefiles.com/packages/lf20_bXGMKilbSf.json"
    :loop="true"
    container-tag="main"
    @ready="onReady"
  >
    <template #loading>
      Loading...
    </template>
  </Blottie>
</template>

This will be change to this

<template>
  <Blottie
    class="animation"
    :lottie="{
      loop: true,
      path: 'https://assets6.lottiefiles.com/packages/lf20_bXGMKilbSf.json',
    }"
    container-tag="main"
    @ready="onReady"
    @loop-complete="onLoop"
  >
    <template #loading>
      Loading...
    </template>
  </Blottie>
</template>

Why?

Lottie is a great library allowing designer to make an animation on after effects and export it to the web.

If you don't know what is lottie, check the official website.

But the integration is not easy on VueJS and I needed one for a company project. So I was looking for a VueJS 3 library.

LottieFiles provides a player named lottie-player but it was not light enought for my need and It was not customizable enough : if you don't find suitable for you need, make your own component 🤓

👨‍💼 Licence

MIT