1 import parseApng from 'apng-js';
2 import axios from 'axios';
3 import PropTypes from 'prop-types';
4 import React from 'react';
5 import { Button } from 'react-bootstrap';
6 import { useTranslation } from 'react-i18next';
8 import Icon from './Icon';
10 const createPlayer = async (apng, canvas) => {
11 const context = canvas.getContext('2d', { willReadFrequently: true });
12 const player = await apng.getPlayer(context);
17 const PngPlayer = ({ src }) => {
18 const canvas = React.useRef();
19 const { t } = useTranslation();
21 const [apng, setApng] = React.useState(null);
22 const [error, setError] = React.useState(null);
23 const [loading, setLoading] = React.useState(true);
24 const [player, setPlayer] = React.useState(null);
26 React.useEffect(() => {
30 const ctrl = new AbortController();
31 const fetchPng = async () => {
33 const response = await axios.get(src, {
34 responseType: 'arraybuffer',
37 const png = parseApng(response.data);
38 await png.createImages();
42 if (!axios.isCancel(e)) {
54 React.useEffect(async () => {
55 if (loading || !canvas.current) return;
56 setPlayer(await createPlayer(apng, canvas.current));
57 }, [apng, canvas.current, loading]);
59 const play = React.useCallback(() => {
60 if (player) player.play();
63 const pause = React.useCallback(() => {
64 if (player) player.pause();
67 const stop = React.useCallback(() => {
68 if (player) player.stop();
71 const nextFrame = React.useCallback(() => {
72 if (player) player.renderNextFrame();
76 return <div>Error</div>;
79 return <div>Loading</div>;
82 return <div className="png-player">
83 <div className="screen">
84 <canvas ref={canvas} width={apng.width} height={apng.height} />
86 <div className="button-bar controls">
89 title={t('button.stop')}
90 variant="outline-secondary"
92 <Icon.STOP title="" />
96 title={t('button.play')}
97 variant="outline-secondary"
99 <Icon.PLAY title="" />
103 title={t('button.pause')}
104 variant="outline-secondary"
106 <Icon.PAUSE title="" />
110 title={t('button.nextFrame')}
111 variant="outline-secondary"
113 <Icon.STEP_FORWARD title="" />
119 PngPlayer.propTypes = {
120 src: PropTypes.string,
123 export default PngPlayer;