README.md

@lottiefiles/dotlottie-react

Contents

• Introduction
  • What is dotLottie?
• Installation
• Usage
• Live Examples
• APIs
  • DotLottieReactProps
• Custom Playback Controls
• Listening to Events
• Development
  • Setup
  • Dev
  • Build

Introduction

A React library for rendering lottie and dotLottie animations in the browser.

What is dotLottie?

dotLottie is an open-source file format that aggregates one or more Lottie files and their associated resources into a single file. They are ZIP archives compressed with the Deflate compression method and carry the file extension of ".lottie".

Learn more about dotLottie.

Installation

npm install @lottiefiles/dotlottie-react

Usage

import React from 'react';
import { DotLottieReact } from '@lottiefiles/dotlottie-react';

const App = () => {
  return (
    <DotLottieReact
      src="path/to/animation.lottie"
      loop
      autoplay
    />
  );
};

Live Examples

• Getting Started
• Custom Playback Controls

APIs

DotLottieReactProps

The DotLottieReactProps extends the HTMLCanvasElement Props and accepts all the props that the HTMLCanvasElement accepts. In addition to that, it also accepts the following props:

Property name	Type	Required	Default	Description
autoplay	boolean		false	Auto-starts the animation on load.
loop	boolean		false	Determines if the animation should loop.
src	string		undefined	URL to the animation data (.json or .lottie).
speed	number		1	Animation playback speed. 1 is regular speed.
data	string | ArrayBuffer		undefined	Animation data provided either as a Lottie JSON string or as an ArrayBuffer for .lottie animations.
mode	string		"forward"	Animation play mode. Accepts "forward", "reverse", "bounce", "reverse-bounce".
backgroundColor	string		undefined	Background color of the canvas. Accepts 6-digit or 8-digit hex color string (e.g., "#000000", "#000000FF"),
segment	[number, number]		[0, totalFrames - 1]	Animation segment. Accepts an array of two numbers, where the first number is the start frame and the second number is the end frame.
renderConfig	RenderConfig		{}	Configuration for rendering the animation.
playOnHover	boolean		false	Determines if the animation should play on mouse hover and pause on mouse out.
dotLottieRefCallback	React.RefCallback<DotLottie | null>		undefined	Callback function that receives a reference to the dotLottie web player instance.
useFrameInterpolation	boolean		true	Determines if the animation should update on subframes. If set to false, the original AE frame rate will be maintained. If set to true, it will refresh at each requestAnimationFrame, including intermediate values. The default setting is true.
autoResizeCanvas	boolean		true	Determines if the canvas should resize automatically to its container
marker	string		undefined	The Lottie named marker to play.

RenderConfig

The renderConfig object accepts the following properties:

Property name	Type	Required	Default	Description
devicePixelRatio	number		window.devicePixelRatio | 1	The device pixel ratio.

Custom Playback Controls

DotLottieReact component makes it easy to build custom playback controls for the animation. It exposes a dotLottieRefCallback prop that can be used to get a reference to the dotLottie web player instance. This instance can be used to control the playback of the animation using the methods exposed by the dotLottie web player instance.

Here is an example:

import React from 'react';
import { DotLottieReact } from '@lottiefiles/dotlottie-react';

const App = () => {
  const [dotLottie, setDotLottie] = React.useState(null);

  const dotLottieRefCallback = (dotLottie) => {
    setDotLottie(dotLottie);
  };

  function play(){
    if(dotLottie){
      dotLottie.play();
    }
  }

  function pause(){
    if(dotLottie){
      dotLottie.pause();
    }
  }

  function stop(){
    if(dotLottie){
      dotLottie.stop();
    }
  }

  function seek(){
    if(dotLottie){
      dotLottie.setFrame(30);
    }
  }

  return (
    <DotLottieReact
      src="path/to/animation.lottie"
      loop
      autoplay
      dotLottieRefCallback={dotLottieRefCallback}
    />
    <div>
      <button onClick={play}>Play</button>
      <button onClick={pause}>Pause</button>
      <button onClick={stop}>Stop</button>
      <button onClick={seek}>Seek to frame no. 30</button>
    </div>
  );
};

You can find the list of methods that can be used to control the playback of the animation here.

Listening to Events

DotLottieReact component can receive a dotLottieRefCallback prop that can be used to get a reference to the dotLottie web player instance. This reference can be used to listen to player events emitted by the dotLottie web instance.

Here is an example:

import React from 'react';
import { DotLottieReact } from '@lottiefiles/dotlottie-react';

const App = () => {
  const [dotLottie, setDotLottie] = React.useState(null);

  React.useEffect(() => {

    // This function will be called when the animation starts playing.
    function onPlay() {
      console.log('Animation start playing');
    }

    // This function will be called when the animation is paused.
    function onPause() {
      console.log('Animation paused');
    }

    // This function will be called when the animation is completed.
    function onComplete() {
      console.log('Animation completed');
    }

    function onFrameChange({currentFrame}) {
      console.log('Current frame: ', currentFrame);
    }

    // Listen to events emitted by the DotLottie instance when it is available.
    if (dotLottie) {
      dotLottie.addEventListener('play', onPlay);
      dotLottie.addEventListener('pause', onPause);
      dotLottie.addEventListener('complete', onComplete);
      dotLottie.addEventListener('frame', onFrameChange);
    }

    return () => {
      // Remove event listeners when the component is unmounted.
      if (dotLottie) {
        dotLottie.removeEventListener('play', onPlay);
        dotLottie.removeEventListener('pause', onPause);
        dotLottie.removeEventListener('complete', onComplete);
        dotLottie.removeEventListener('frame', onFrameChange);
      }
    };
  }, [dotLottie]);


  const dotLottieRefCallback = (dotLottie) => {
    setDotLottie(dotLottie);
  };

  return (
    <DotLottieReact
      src="path/to/animation.lottie"
      loop
      autoplay
      dotLottieRefCallback={dotLottieRefCallback}
    />
  );
};

dotLottie instance exposes multiple events that can be listened to. You can find the list of events here.

Development

Setup

pnpm install

Dev

pnpm dev

Build

pnpm build