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import React, { Component } from 'react'
import { connect } from 'react-redux'
import actions from 'app/actions'
import { VIDEO_SCRUBBER_HIDE_DELAY, VIDEO_SCRUBBER_HOVER_AREA } from 'app/constants'
import { clamp, timestamp } from 'app/utils'
import { PlayButton, VolumeControl, SubtitleButton } from 'app/views/viewer/nav/viewer.icons'
class VideoScrubber extends Component {
state = {
hovering: false,
showing: false,
}
constructor(props) {
super(props)
this.scrubberRef = React.createRef()
this.handleMouseDown = this.handleMouseDown.bind(this)
this.handleMouseMove = this.handleMouseMove.bind(this)
this.handleMouseUp = this.handleMouseUp.bind(this)
this.handleMouseEnter = this.handleMouseEnter.bind(this)
this.handleMouseLeave = this.handleMouseLeave.bind(this)
this.handleWindowFocus = this.handleWindowFocus.bind(this)
this.hide = this.hide.bind(this)
}
componentDidMount() {
window.addEventListener('mousemove', this.handleMouseMove)
window.addEventListener('mouseup', this.handleMouseUp)
window.addEventListener('focus', this.handleWindowFocus)
// this.show()
}
componentWillUnmount() {
window.removeEventListener('mousemove', this.handleMouseMove)
window.removeEventListener('mouseup', this.handleMouseUp)
window.removeEventListener('focus', this.handleWindowFocus)
clearTimeout(this.hideTimeout)
}
show() {
clearTimeout(this.hideTimeout)
this.hideTimeout = setTimeout(this.hide, VIDEO_SCRUBBER_HIDE_DELAY)
if (!this.showing) {
this.setState({ showing: true })
}
}
hide() {
clearTimeout(this.timeout)
this.setState({ showing: false })
this.defer = false
}
scrub(x, scrubbing) {
const { timing, start_ts, video_start_ts, onScrub, onToggle, duration, scrubMasterAudio } = this.props
const bounds = this.scrubberRef.current.getBoundingClientRect()
// get percent offset from the scrubber
const percent = clamp((x - bounds.left) / bounds.width, 0, 1)
// this offset in seconds based on the length of the fullscreen element
const seconds = percent * duration
// we can use this to seek the audio
if (scrubMasterAudio) {
actions.audio.seek(start_ts + seconds)
actions.audio.play()
}
// apply the video start offset.
// in case the video loops, modulo the length of the original video
const video_seek = ((seconds + video_start_ts) % timing.duration)
//
// console.log(start_ts, seconds)
onScrub({
seek: video_seek,
seconds: seconds,
scrubbing,
})
}
handleMouseDown(e) {
e.stopPropagation()
this.scrub(e.pageX, true)
}
handleMouseMove(e) {
e.stopPropagation()
if (e.pageY < window.innerHeight - VIDEO_SCRUBBER_HOVER_AREA) {
return
}
// console.log('move', this.defer)
if (this.defer) {
this.defer = false
this.show()
}
this.defer = true
clearTimeout(this.showTimeout)
this.showTimeout = setTimeout(() => {
this.defer = false
}, 16)
if (!this.props.timing.scrubbing) return
this.scrub(e.pageX, true)
}
handleMouseUp(e) {
e.stopPropagation()
this.props.onScrub({ scrubbing: false })
}
handleMouseEnter() {
this.setState({ hovering: true })
}
handleMouseLeave() {
this.setState({ hovering: false })
}
handleWindowFocus() {
this.setState({ showing: false, hovering: false })
clearTimeout(this.hideTimeout)
}
render() {
const { playing, start_ts, play_ts, volume, timing, video_start_ts, duration, cc, mediaItem, onToggle } = this.props
const { hovering, showing } = this.state
// remove video start offset from timing
// console.log(start_ts, play_ts)
const player_ts = play_ts - start_ts
// compute percent from the length of the fullscreen element
const percent = clamp(player_ts / duration, 0, 1)
// display timestamp from the fullscreen element too
const timestampText = timestamp(clamp(player_ts, 0, duration))
// show or hide the scrubber bar
const className = (hovering || showing) ? 'video-scrubber show' : 'video-scrubber'
// console.log(timing.seconds, video_start_ts, duration)
return (
<div className={className}>
<div className='start-controls'>
<PlayButton playing={playing} onClick={onToggle} />
</div>
<div
className='scrub-bar-container'
onMouseDown={this.handleMouseDown}
onMouseEnter={this.handleMouseEnter}
onMouseLeave={this.handleMouseLeave}
ref={this.scrubberRef}
>
<div className='scrub-bar' />
<div
className='scrub-dot'
style={{ left: (100 * percent) + "%" }}
/>
<div
className='scrub-timestamp'
style={{ left: (100 * percent) + "%" }}
>
{timestampText}
</div>
</div>
<div className={mediaItem.settings.subtitles ? 'end-controls has-cc' : 'end-controls'}>
<div className='playerTime'>
{timestampText}
</div>
<VolumeControl volume={volume} />
{mediaItem.settings.subtitles && <SubtitleButton cc={cc} />}
</div>
</div>
)
}
}
const mapStateToProps = state => ({
volume: state.audio.volume,
cc: state.audio.cc,
})
export default connect(mapStateToProps)(VideoScrubber)
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