1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
import React, { Component } from 'react'
// import { Link } from 'react-router-dom'
import { bindActionCreators } from 'redux'
import { connect } from 'react-redux'
import actions from '../../../actions'
// import * as alignActions from '../align.actions'
import Annotations from '../containers/annotations.container'
import Waveform from '../components/timeline/waveform.component'
import Ticks from '../components/timeline/ticks.component'
import Cursor from '../components/timeline/cursor.component'
import PlayButton from '../components/player/playButton.component'
import PlayCursor from '../components/timeline/playCursor.component'
import { WAVEFORM_SIZE, ZOOM_STEPS, INNER_HEIGHT } from '../constants'
import { clamp } from '../../../util'
import { positionToTime } from '../align.util'
class Timeline extends Component {
constructor(props){
super(props)
this.handleKeydown = this.handleKeydown.bind(this)
this.handleMouseMove = this.handleMouseMove.bind(this)
this.handleWheel = this.handleWheel.bind(this)
this.handleContainerClick = this.handleContainerClick.bind(this)
this.handleTimelineClick = this.handleTimelineClick.bind(this)
}
componentDidMount() {
this.bind()
}
componentWillUnmount() {
this.unbind()
}
shouldComponentUpdate(nextProps) {
return (
nextProps.timeline !== this.props.timeline ||
nextProps.annotation !== this.props.annotation
)
}
bind() {
document.addEventListener('keydown', this.handleKeydown)
}
unbind() {
document.removeEventListener('keydown', this.handleKeydown)
}
handleKeydown(e) {
if (document.activeElement !== document.body) {
return
}
// console.log(e.keyCode)
if (e.metaKey && this.props.selectedAnnotation.id) {
const { selectedAnnotation } = this.props
switch (e.keyCode) {
case 38: // up
e.preventDefault()
selectedAnnotation.start_ts = Math.max(selectedAnnotation.start_ts - (e.shiftKey ? 1 : 0.1), 0)
actions.align.updateSelectedAnnotation(selectedAnnotation)
actions.audio.seek(selectedAnnotation.start_ts)
actions.align.setCursor(selectedAnnotation.start_ts)
break
case 40: // down
e.preventDefault()
selectedAnnotation.start_ts += e.shiftKey ? 1 : 0.1
actions.align.updateSelectedAnnotation(selectedAnnotation)
actions.audio.seek(selectedAnnotation.start_ts)
actions.align.setCursor(selectedAnnotation.start_ts)
break
}
return
}
if (e.shiftKey) {
switch (e.keyCode) {
case 187: // plus
actions.align.setZoom(this.props.timeline.zoom - 1)
break
case 189: // minus
actions.align.setZoom(this.props.timeline.zoom + 1)
break
}
} else {
// console.log(e.keyCode)
switch (e.keyCode) {
case 27: // escape
actions.align.hideAnnotationForm()
break
case 65: // A - add
e.preventDefault()
actions.align.showNewAnnotationForm(this.props.audio.play_ts, this.props.text)
break
case 32: // spacebar
actions.audio.toggle()
break
case 38: // up
actions.audio.jump(- ZOOM_STEPS[this.props.timeline.zoom] * 0.1)
break
case 40: // down
actions.audio.jump(ZOOM_STEPS[this.props.timeline.zoom] * 0.1)
break
}
}
}
handleWheel(e) {
let { start_ts, zoom, duration } = this.props.timeline
let { deltaY } = e
let secondsPerPixel = ZOOM_STEPS[zoom] * 0.1 // 0.1 sec / step
let widthTimeDuration = INNER_HEIGHT * secondsPerPixel // secs per pixel
start_ts += Math.round((deltaY) * ZOOM_STEPS[zoom])
start_ts = clamp(start_ts, 0, Math.max(0, duration - widthTimeDuration / 2))
if (e.shiftKey) {
if (Math.abs(deltaY) < 2) return
if (e.deltaY > 0) {
actions.align.throttledSetZoom(this.props.timeline.zoom + 1)
} else {
actions.align.throttledSetZoom(this.props.timeline.zoom - 1)
}
} else if (e.altKey) {
actions.audio.jump(e.deltaY * ZOOM_STEPS[zoom])
} else {
actions.align.setScrollPosition(start_ts)
}
}
handleMouseMove(e) {
const cursor_ts = positionToTime(e.pageY, this.props.timeline)
actions.align.setCursor(cursor_ts)
}
handleContainerClick(e) {
actions.align.clearSelectedAnnotation()
actions.align.clearSelectedParagraph()
}
handleTimelineClick(e) {
const play_ts = positionToTime(e.pageY, this.props.timeline)
if (e.pageX < WAVEFORM_SIZE * 0.67) {
actions.audio.seek(play_ts)
} else {
actions.align.showNewAnnotationForm(play_ts, this.props.text)
}
}
render() {
return (
<div
className='timeline'
onClick={this.handleContainerClick}
onWheel={this.handleWheel}
onMouseMove={this.handleMouseMove}
>
<div className='timelineColumn'>
<Waveform onClick={this.handleTimelineClick} />
<Ticks timeline={this.props.timeline} />
<Cursor timeline={this.props.timeline} annotation={this.props.annotation} />
</div>
<Annotations timeline={this.props.timeline} />
<PlayCursor />
</div>
)
}
}
const mapStateToProps = state => ({
timeline: state.align.timeline,
annotation: state.align.annotation,
selectedAnnotation: state.align.selectedAnnotation,
audio: state.audio,
text: state.site.text,
})
const mapDispatchToProps = dispatch => ({
// alignActions: bindActionCreators({ ...alignActions }, dispatch),
})
export default connect(mapStateToProps, mapDispatchToProps)(Timeline)
|
