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import React, {useMemo, useState} from 'react'
import {
LayoutChangeEvent,
StyleProp,
StyleSheet,
TouchableOpacity,
View,
ViewStyle,
} from 'react-native'
import {Image, ImageStyle} from 'expo-image'
import {Dimensions} from 'lib/media/types'
import {AppBskyEmbedImages} from '@atproto/api'
export const DELAY_PRESS_IN = 500
interface ImageLayoutGridProps {
images: AppBskyEmbedImages.ViewImage[]
onPress?: (index: number) => void
onLongPress?: (index: number) => void
onPressIn?: (index: number) => void
style?: StyleProp<ViewStyle>
}
export function ImageLayoutGrid({
images,
onPress,
onLongPress,
onPressIn,
style,
}: ImageLayoutGridProps) {
const [containerInfo, setContainerInfo] = useState<Dimensions | undefined>()
const onLayout = (evt: LayoutChangeEvent) => {
setContainerInfo({
width: evt.nativeEvent.layout.width,
height: evt.nativeEvent.layout.height,
})
}
return (
<View style={style} onLayout={onLayout}>
{containerInfo ? (
<ImageLayoutGridInner
images={images}
onPress={onPress}
onPressIn={onPressIn}
onLongPress={onLongPress}
containerInfo={containerInfo}
/>
) : undefined}
</View>
)
}
interface ImageLayoutGridInnerProps {
images: AppBskyEmbedImages.ViewImage[]
onPress?: (index: number) => void
onLongPress?: (index: number) => void
onPressIn?: (index: number) => void
containerInfo: Dimensions
}
function ImageLayoutGridInner({
images,
onPress,
onLongPress,
onPressIn,
containerInfo,
}: ImageLayoutGridInnerProps) {
const count = images.length
const size1 = useMemo<ImageStyle>(() => {
if (count === 3) {
const size = (containerInfo.width - 10) / 3
return {width: size, height: size, resizeMode: 'cover', borderRadius: 4}
} else {
const size = (containerInfo.width - 5) / 2
return {width: size, height: size, resizeMode: 'cover', borderRadius: 4}
}
}, [count, containerInfo])
const size2 = React.useMemo<ImageStyle>(() => {
if (count === 3) {
const size = ((containerInfo.width - 10) / 3) * 2 + 5
return {width: size, height: size, resizeMode: 'cover', borderRadius: 4}
} else {
const size = (containerInfo.width - 5) / 2
return {width: size, height: size, resizeMode: 'cover', borderRadius: 4}
}
}, [count, containerInfo])
if (count === 2) {
return (
<View style={styles.flexRow}>
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(0)}
onPressIn={() => onPressIn?.(0)}
onLongPress={() => onLongPress?.(0)}>
<Image
source={{uri: images[0].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[0].alt}
/>
</TouchableOpacity>
<View style={styles.wSpace} />
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(1)}
onPressIn={() => onPressIn?.(1)}
onLongPress={() => onLongPress?.(1)}>
<Image
source={{uri: images[1].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[1].alt}
/>
</TouchableOpacity>
</View>
)
}
if (count === 3) {
return (
<View style={styles.flexRow}>
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(0)}
onPressIn={() => onPressIn?.(0)}
onLongPress={() => onLongPress?.(0)}>
<Image
source={{uri: images[0].thumb}}
style={size2}
accessible={true}
accessibilityLabel={images[0].alt}
/>
</TouchableOpacity>
<View style={styles.wSpace} />
<View>
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(1)}
onPressIn={() => onPressIn?.(1)}
onLongPress={() => onLongPress?.(1)}>
<Image
source={{uri: images[1].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[1].alt}
/>
</TouchableOpacity>
<View style={styles.hSpace} />
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(2)}
onPressIn={() => onPressIn?.(2)}
onLongPress={() => onLongPress?.(2)}>
<Image
source={{uri: images[2].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[2].alt}
/>
</TouchableOpacity>
</View>
</View>
)
}
if (count === 4) {
return (
<View style={styles.flexRow}>
<View>
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(0)}
onPressIn={() => onPressIn?.(0)}
onLongPress={() => onLongPress?.(0)}>
<Image
source={{uri: images[0].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[0].alt}
/>
</TouchableOpacity>
<View style={styles.hSpace} />
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(2)}
onPressIn={() => onPressIn?.(2)}
onLongPress={() => onLongPress?.(2)}>
<Image
source={{uri: images[2].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[2].alt}
/>
</TouchableOpacity>
</View>
<View style={styles.wSpace} />
<View>
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(1)}
onPressIn={() => onPressIn?.(1)}
onLongPress={() => onLongPress?.(1)}>
<Image
source={{uri: images[1].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[1].alt}
/>
</TouchableOpacity>
<View style={styles.hSpace} />
<TouchableOpacity
delayPressIn={DELAY_PRESS_IN}
onPress={() => onPress?.(3)}
onPressIn={() => onPressIn?.(3)}
onLongPress={() => onLongPress?.(3)}>
<Image
source={{uri: images[3].thumb}}
style={size1}
accessible={true}
accessibilityLabel={images[3].alt}
/>
</TouchableOpacity>
</View>
</View>
)
}
return <View />
}
const styles = StyleSheet.create({
flexRow: {flexDirection: 'row'},
wSpace: {width: 5},
hSpace: {height: 5},
})
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