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import React, {useState, useEffect} from 'react'
import {
Image,
ImageStyle,
LayoutChangeEvent,
StyleProp,
StyleSheet,
Text,
TouchableWithoutFeedback,
View,
ViewStyle,
} from 'react-native'
import {colors} from '../../../lib/styles'
const MAX_HEIGHT = 300
interface Dim {
width: number
height: number
}
export function AutoSizedImage({
uri,
onPress,
style,
}: {
uri: string
onPress?: () => void
style: StyleProp<ImageStyle>
}) {
const [error, setError] = useState<string | undefined>()
const [imgInfo, setImgInfo] = useState<Dim | undefined>()
const [containerInfo, setContainerInfo] = useState<Dim | undefined>()
useEffect(() => {
let aborted = false
if (!imgInfo) {
Image.getSize(
uri,
(width: number, height: number) => {
if (!aborted) {
setImgInfo({width, height})
}
},
(error: any) => {
if (!aborted) {
setError(String(error))
}
},
)
}
return () => {
aborted = true
}
}, [uri, imgInfo])
const onLayout = (evt: LayoutChangeEvent) => {
setContainerInfo({
width: evt.nativeEvent.layout.width,
height: evt.nativeEvent.layout.height,
})
}
let calculatedStyle: StyleProp<ViewStyle> | undefined
if (imgInfo && containerInfo) {
// imgInfo.height / imgInfo.width = x / containerInfo.width
// x = imgInfo.height / imgInfo.width * containerInfo.width
calculatedStyle = {
height: Math.min(
MAX_HEIGHT,
(imgInfo.height / imgInfo.width) * containerInfo.width,
),
}
}
return (
<View style={style}>
<TouchableWithoutFeedback onPress={onPress}>
{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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