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import React from 'react'
import {
Image,
ImageStyle,
LayoutChangeEvent,
StyleProp,
StyleSheet,
TouchableWithoutFeedback,
View,
ViewStyle,
} from 'react-native'
interface Dim {
width: number
height: number
}
export type ImageLayoutGridType = 'two' | 'three' | 'four'
export function ImageLayoutGrid({
type,
uris,
onPress,
style,
}: {
type: ImageLayoutGridType
uris: string[]
onPress?: (index: number) => void
style?: StyleProp<ViewStyle>
}) {
const [containerInfo, setContainerInfo] = React.useState<Dim | undefined>()
const onLayout = (evt: LayoutChangeEvent) => {
setContainerInfo({
width: evt.nativeEvent.layout.width,
height: evt.nativeEvent.layout.height,
})
}
return (
<View style={style} onLayout={onLayout}>
{containerInfo ? (
<ImageLayoutGridInner
type={type}
uris={uris}
onPress={onPress}
containerInfo={containerInfo}
/>
) : undefined}
</View>
)
}
function ImageLayoutGridInner({
type,
uris,
onPress,
containerInfo,
}: {
type: ImageLayoutGridType
uris: string[]
onPress?: (index: number) => void
containerInfo: Dim
}) {
const size1 = React.useMemo<ImageStyle>(() => {
if (type === 'three') {
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}
}
}, [type, containerInfo])
const size2 = React.useMemo<ImageStyle>(() => {
if (type === 'three') {
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}
}
}, [type, containerInfo])
if (type === 'two') {
return (
<View style={styles.flexRow}>
<TouchableWithoutFeedback onPress={() => onPress?.(0)}>
<Image source={{uri: uris[0]}} style={size1} />
</TouchableWithoutFeedback>
<View style={styles.wSpace} />
<TouchableWithoutFeedback onPress={() => onPress?.(1)}>
<Image source={{uri: uris[1]}} style={size1} />
</TouchableWithoutFeedback>
</View>
)
}
if (type === 'three') {
return (
<View style={styles.flexRow}>
<TouchableWithoutFeedback onPress={() => onPress?.(0)}>
<Image source={{uri: uris[0]}} style={size2} />
</TouchableWithoutFeedback>
<View style={styles.wSpace} />
<View>
<TouchableWithoutFeedback onPress={() => onPress?.(1)}>
<Image source={{uri: uris[1]}} style={size1} />
</TouchableWithoutFeedback>
<View style={styles.hSpace} />
<TouchableWithoutFeedback onPress={() => onPress?.(2)}>
<Image source={{uri: uris[2]}} style={size1} />
</TouchableWithoutFeedback>
</View>
</View>
)
}
if (type === 'four') {
return (
<View style={styles.flexRow}>
<View>
<TouchableWithoutFeedback onPress={() => onPress?.(0)}>
<Image source={{uri: uris[0]}} style={size1} />
</TouchableWithoutFeedback>
<View style={styles.hSpace} />
<TouchableWithoutFeedback onPress={() => onPress?.(1)}>
<Image source={{uri: uris[1]}} style={size1} />
</TouchableWithoutFeedback>
</View>
<View style={styles.wSpace} />
<View>
<TouchableWithoutFeedback onPress={() => onPress?.(2)}>
<Image source={{uri: uris[2]}} style={size1} />
</TouchableWithoutFeedback>
<View style={styles.hSpace} />
<TouchableWithoutFeedback onPress={() => onPress?.(3)}>
<Image source={{uri: uris[3]}} style={size1} />
</TouchableWithoutFeedback>
</View>
</View>
)
}
return <View />
}
const styles = StyleSheet.create({
flexRow: {flexDirection: 'row'},
wSpace: {width: 5},
hSpace: {height: 5},
})
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