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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
import React from 'react'
import {View} from 'react-native'
import Animated, {
Easing,
LayoutAnimationConfig,
useReducedMotion,
withTiming,
} from 'react-native-reanimated'
import {i18n} from '@lingui/core'
import {decideShouldRoll} from '#/lib/custom-animations/util'
import {s} from '#/lib/styles'
import {Text} from '#/view/com/util/text/Text'
import {atoms as a, useTheme} from '#/alf'
import {formatPostStatCount} from '#/components/PostControls/util'
const animationConfig = {
duration: 400,
easing: Easing.out(Easing.cubic),
}
function EnteringUp() {
'worklet'
const animations = {
opacity: withTiming(1, animationConfig),
transform: [{translateY: withTiming(0, animationConfig)}],
}
const initialValues = {
opacity: 0,
transform: [{translateY: 18}],
}
return {
animations,
initialValues,
}
}
function EnteringDown() {
'worklet'
const animations = {
opacity: withTiming(1, animationConfig),
transform: [{translateY: withTiming(0, animationConfig)}],
}
const initialValues = {
opacity: 0,
transform: [{translateY: -18}],
}
return {
animations,
initialValues,
}
}
function ExitingUp() {
'worklet'
const animations = {
opacity: withTiming(0, animationConfig),
transform: [
{
translateY: withTiming(-18, animationConfig),
},
],
}
const initialValues = {
opacity: 1,
transform: [{translateY: 0}],
}
return {
animations,
initialValues,
}
}
function ExitingDown() {
'worklet'
const animations = {
opacity: withTiming(0, animationConfig),
transform: [{translateY: withTiming(18, animationConfig)}],
}
const initialValues = {
opacity: 1,
transform: [{translateY: 0}],
}
return {
animations,
initialValues,
}
}
export function CountWheel({
likeCount,
big,
isLiked,
hasBeenToggled,
compactCount,
}: {
likeCount: number
big?: boolean
isLiked: boolean
hasBeenToggled: boolean
compactCount?: boolean
}) {
const t = useTheme()
const shouldAnimate = !useReducedMotion() && hasBeenToggled
const shouldRoll = decideShouldRoll(isLiked, likeCount)
// Incrementing the key will cause the `Animated.View` to re-render, with the newly selected entering/exiting
// animation
// The initial entering/exiting animations will get skipped, since these will happen on screen mounts and would
// be unnecessary
const [key, setKey] = React.useState(0)
const [prevCount, setPrevCount] = React.useState(likeCount)
const prevIsLiked = React.useRef(isLiked)
const formattedCount = formatPostStatCount(i18n, likeCount, {
compact: compactCount,
})
const formattedPrevCount = formatPostStatCount(i18n, prevCount, {
compact: compactCount,
})
React.useEffect(() => {
if (isLiked === prevIsLiked.current) {
return
}
const newPrevCount = isLiked ? likeCount - 1 : likeCount + 1
setKey(prev => prev + 1)
setPrevCount(newPrevCount)
prevIsLiked.current = isLiked
}, [isLiked, likeCount])
const enteringAnimation =
shouldAnimate && shouldRoll
? isLiked
? EnteringUp
: EnteringDown
: undefined
const exitingAnimation =
shouldAnimate && shouldRoll
? isLiked
? ExitingUp
: ExitingDown
: undefined
return (
<LayoutAnimationConfig skipEntering skipExiting>
{likeCount > 0 ? (
<View style={[a.justify_center]}>
<Animated.View entering={enteringAnimation} key={key}>
<Text
testID="likeCount"
style={[
big ? a.text_md : a.text_sm,
a.user_select_none,
isLiked
? [a.font_bold, s.likeColor]
: {color: t.palette.contrast_500},
]}>
{formattedCount}
</Text>
</Animated.View>
{shouldAnimate && (likeCount > 1 || !isLiked) ? (
<Animated.View
entering={exitingAnimation}
// Add 2 to the key so there are never duplicates
key={key + 2}
style={[a.absolute, {width: 50, opacity: 0}]}
aria-disabled={true}>
<Text
style={[
big ? a.text_md : a.text_sm,
a.user_select_none,
isLiked
? [a.font_bold, s.likeColor]
: {color: t.palette.contrast_500},
]}>
{formattedPrevCount}
</Text>
</Animated.View>
) : null}
</View>
) : null}
</LayoutAnimationConfig>
)
}
|
