import React from 'react'; import PropTypes from 'prop-types'; import WaveSurfer from 'wavesurfer.js'; import { defineMessages, injectIntl } from 'react-intl'; import { formatTime } from 'mastodon/features/video'; import Icon from 'mastodon/components/icon'; import classNames from 'classnames'; import { throttle } from 'lodash'; const messages = defineMessages({ play: { id: 'video.play', defaultMessage: 'Play' }, pause: { id: 'video.pause', defaultMessage: 'Pause' }, mute: { id: 'video.mute', defaultMessage: 'Mute sound' }, unmute: { id: 'video.unmute', defaultMessage: 'Unmute sound' }, }); const arrayOf = (length, fill) => (new Array(length)).fill(fill); export default @injectIntl class Audio extends React.PureComponent { static propTypes = { src: PropTypes.string.isRequired, alt: PropTypes.string, duration: PropTypes.number, height: PropTypes.number, preload: PropTypes.bool, editable: PropTypes.bool, intl: PropTypes.object.isRequired, }; state = { currentTime: 0, duration: null, paused: true, muted: false, volume: 0.5, }; // hard coded in components.scss // any way to get ::before values programatically? volWidth = 50; volOffset = 70; volHandleOffset = v => { const offset = v * this.volWidth + this.volOffset; return (offset > 110) ? 110 : offset; } setVolumeRef = c => { this.volume = c; } setWaveformRef = c => { this.waveform = c; } componentDidMount () { if (this.waveform) { this._updateWaveform(); } } componentDidUpdate (prevProps) { if (this.waveform && prevProps.src !== this.props.src) { this._updateWaveform(); } } componentWillUnmount () { if (this.wavesurfer) { this.wavesurfer.destroy(); this.wavesurfer = null; } } _updateWaveform () { const { src, height, duration, preload } = this.props; const progressColor = window.getComputedStyle(document.querySelector('.audio-player__progress-placeholder')).getPropertyValue('background-color'); const waveColor = window.getComputedStyle(document.querySelector('.audio-player__wave-placeholder')).getPropertyValue('background-color'); if (this.wavesurfer) { this.wavesurfer.destroy(); } const wavesurfer = WaveSurfer.create({ container: this.waveform, height, barWidth: 3, cursorWidth: 0, progressColor, waveColor, forceDecode: true, }); wavesurfer.setVolume(this.state.volume); if (preload) { wavesurfer.load(src); } else { wavesurfer.load(src, arrayOf(1, 0.5), null, duration); } wavesurfer.on('ready', () => this.setState({ duration: Math.floor(wavesurfer.getDuration()) })); wavesurfer.on('audioprocess', () => this.setState({ currentTime: Math.floor(wavesurfer.getCurrentTime()) })); wavesurfer.on('pause', () => this.setState({ paused: true })); wavesurfer.on('play', () => this.setState({ paused: false })); wavesurfer.on('volume', volume => this.setState({ volume })); wavesurfer.on('mute', muted => this.setState({ muted })); this.wavesurfer = wavesurfer; } togglePlay = () => { if (this.state.paused) { if (!this.props.preload) { this.wavesurfer.createBackend(); this.wavesurfer.createPeakCache(); this.wavesurfer.load(this.props.src); } this.wavesurfer.play(); } else { this.wavesurfer.pause(); } } toggleMute = () => { this.wavesurfer.setMute(!this.state.muted); } handleVolumeMouseDown = e => { document.addEventListener('mousemove', this.handleMouseVolSlide, true); document.addEventListener('mouseup', this.handleVolumeMouseUp, true); document.addEventListener('touchmove', this.handleMouseVolSlide, true); document.addEventListener('touchend', this.handleVolumeMouseUp, true); this.handleMouseVolSlide(e); e.preventDefault(); e.stopPropagation(); } handleVolumeMouseUp = () => { document.removeEventListener('mousemove', this.handleMouseVolSlide, true); document.removeEventListener('mouseup', this.handleVolumeMouseUp, true); document.removeEventListener('touchmove', this.handleMouseVolSlide, true); document.removeEventListener('touchend', this.handleVolumeMouseUp, true); } handleMouseVolSlide = throttle(e => { const rect = this.volume.getBoundingClientRect(); const x = (e.clientX - rect.left) / this.volWidth; // x position within the element. if(!isNaN(x)) { let slideamt = x; if (x > 1) { slideamt = 1; } else if(x < 0) { slideamt = 0; } this.wavesurfer.setVolume(slideamt); } }, 60); render () { const { height, intl, alt, editable } = this.props; const { paused, muted, volume, currentTime } = this.state; const volumeWidth = muted ? 0 : volume * this.volWidth; const volumeHandleLoc = muted ? this.volHandleOffset(0) : this.volHandleOffset(volume); return (
{formatTime(currentTime)} / {formatTime(this.state.duration || Math.floor(this.props.duration))}
); } }