diff options
Diffstat (limited to 'app/javascript/flavours/glitch/features/audio')
| -rw-r--r-- | app/javascript/flavours/glitch/features/audio/index.js | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/features/audio/index.js b/app/javascript/flavours/glitch/features/audio/index.js new file mode 100644 index 000000000..033d92adf --- /dev/null +++ b/app/javascript/flavours/glitch/features/audio/index.js @@ -0,0 +1,236 @@ +import React from 'react'; +import PropTypes from 'prop-types'; +import WaveSurfer from 'wavesurfer.js'; +import { defineMessages, injectIntl } from 'react-intl'; +import { formatTime } from 'flavours/glitch/features/video'; +import Icon from 'flavours/glitch/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' }, + download: { id: 'video.download', defaultMessage: 'Download file' }, +}); + +export default @injectIntl +class Audio extends React.PureComponent { + + static propTypes = { + src: PropTypes.string.isRequired, + alt: PropTypes.string, + duration: PropTypes.number, + peaks: PropTypes.arrayOf(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, peaks, 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(); + this.loaded = false; + } + + const wavesurfer = WaveSurfer.create({ + container: this.waveform, + height, + barWidth: 3, + cursorWidth: 0, + progressColor, + waveColor, + backend: 'MediaElement', + interact: preload, + }); + + wavesurfer.setVolume(this.state.volume); + + if (preload) { + wavesurfer.load(src); + this.loaded = true; + } else { + wavesurfer.load(src, peaks, 'none', duration); + this.loaded = false; + } + + 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.loaded) { + this.wavesurfer.createBackend(); + this.wavesurfer.createPeakCache(); + this.wavesurfer.load(this.props.src); + this.wavesurfer.toggleInteraction(); + this.loaded = true; + } + + this.wavesurfer.play(); + this.setState({ paused: false }); + } else { + this.wavesurfer.pause(); + this.setState({ paused: true }); + } + } + + 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 ( + <div className={classNames('audio-player', { editable })}> + <div className='audio-player__progress-placeholder' style={{ display: 'none' }} /> + <div className='audio-player__wave-placeholder' style={{ display: 'none' }} /> + + <div + className='audio-player__waveform' + aria-label={alt} + title={alt} + style={{ height }} + ref={this.setWaveformRef} + /> + + <div className='video-player__controls active'> + <div className='video-player__buttons-bar'> + <div className='video-player__buttons left'> + <button type='button' aria-label={intl.formatMessage(paused ? messages.play : messages.pause)} onClick={this.togglePlay}><Icon id={paused ? 'play' : 'pause'} fixedWidth /></button> + <button type='button' aria-label={intl.formatMessage(muted ? messages.unmute : messages.mute)} onClick={this.toggleMute}><Icon id={muted ? 'volume-off' : 'volume-up'} fixedWidth /></button> + + <div className='video-player__volume' onMouseDown={this.handleVolumeMouseDown} ref={this.setVolumeRef}> + + <div className='video-player__volume__current' style={{ width: `${volumeWidth}px` }} /> + + <span + className={classNames('video-player__volume__handle')} + tabIndex='0' + style={{ left: `${volumeHandleLoc}px` }} + /> + </div> + + <span> + <span className='video-player__time-current'>{formatTime(currentTime)}</span> + <span className='video-player__time-sep'>/</span> + <span className='video-player__time-total'>{formatTime(this.state.duration || Math.floor(this.props.duration))}</span> + </span> + </div> + + <div className='video-player__buttons right'> + <button type='button' aria-label={intl.formatMessage(messages.download)}> + <a className='video-player__download__icon' href={this.props.src} download> + <Icon id={'download'} fixedWidth /> + </a> + </button> + </div> + </div> + </div> + </div> + ); + } + +} |