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import React, {useState, useEffect, useMemo} from 'react'
import {
Image,
ImageStyle,
LayoutChangeEvent,
StyleProp,
StyleSheet,
Text,
TouchableWithoutFeedback,
View,
} from 'react-native'
import {ImageLightbox} from '../../../../state/models/shell-ui'
import {useStores} from '../../../../state'
import {colors} from '../../../lib/styles'
const MAX_HEIGHT = 300
interface Dim {
width: number
height: number
}
export function AutoSizedImage({
uri,
fullSizeUri,
style,
}: {
uri: string
fullSizeUri?: string
style: StyleProp<ImageStyle>
}) {
const store = useStores()
const [error, setError] = useState<string | undefined>()
const [imgInfo, setImgInfo] = useState<Dim | undefined>()
const [containerInfo, setContainerInfo] = useState<Dim | undefined>()
const calculatedStyle = useMemo(() => {
if (imgInfo && containerInfo) {
// imgInfo.height / imgInfo.width = x / containerInfo.width
// x = imgInfo.height / imgInfo.width * containerInfo.width
return {
height: Math.min(
MAX_HEIGHT,
(imgInfo.height / imgInfo.width) * containerInfo.width,
),
}
}
return undefined
}, [imgInfo, containerInfo])
useEffect(() => {
Image.getSize(
uri,
(width: number, height: number) => {
setImgInfo({width, height})
},
(error: any) => {
setError(String(error))
},
)
}, [uri])
const onLayout = (evt: LayoutChangeEvent) => {
setContainerInfo({
width: evt.nativeEvent.layout.width,
height: evt.nativeEvent.layout.height,
})
}
const onPressImage = () => {
if (fullSizeUri) {
store.shell.openLightbox(new ImageLightbox(fullSizeUri))
}
}
return (
<View style={style}>
<TouchableWithoutFeedback onPress={onPressImage}>
{error ? (
<View style={[styles.container, styles.errorContainer]}>
<Text style={styles.error}>{error}</Text>
</View>
) : calculatedStyle ? (
<View style={styles.container}>
<Image style={calculatedStyle} source={{uri}} />
</View>
) : (
<View style={[style, styles.placeholder]} onLayout={onLayout} />
)}
</TouchableWithoutFeedback>
</View>
)
}
const styles = StyleSheet.create({
placeholder: {
width: '100%',
aspectRatio: 1,
backgroundColor: colors.gray1,
},
errorContainer: {
backgroundColor: colors.red1,
paddingHorizontal: 8,
paddingVertical: 4,
},
container: {
borderRadius: 8,
overflow: 'hidden',
},
error: {
color: colors.red5,
},
})
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