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/**
* Copyright (c) JOB TODAY S.A. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*/
// Original code copied and simplified from the link below as the codebase is currently not maintained:
// https://github.com/jobtoday/react-native-image-viewing
import React, {ComponentType, useCallback, useRef, useEffect} from 'react'
import {
Animated,
Dimensions,
StyleSheet,
View,
VirtualizedList,
ModalProps,
} from 'react-native'
import {ModalsContainer} from '../../modals/Modal'
import ImageItem from './components/ImageItem/ImageItem'
import ImageDefaultHeader from './components/ImageDefaultHeader'
import useAnimatedComponents from './hooks/useAnimatedComponents'
import useImageIndexChange from './hooks/useImageIndexChange'
import useRequestClose from './hooks/useRequestClose'
import {ImageSource} from './@types'
type Props = {
images: ImageSource[]
keyExtractor?: (imageSrc: ImageSource, index: number) => string
imageIndex: number
visible: boolean
onRequestClose: () => void
onLongPress?: (image: ImageSource) => void
onImageIndexChange?: (imageIndex: number) => void
presentationStyle?: ModalProps['presentationStyle']
animationType?: ModalProps['animationType']
backgroundColor?: string
swipeToCloseEnabled?: boolean
doubleTapToZoomEnabled?: boolean
delayLongPress?: number
HeaderComponent?: ComponentType<{imageIndex: number}>
FooterComponent?: ComponentType<{imageIndex: number}>
}
const DEFAULT_BG_COLOR = '#000'
const DEFAULT_DELAY_LONG_PRESS = 800
const SCREEN = Dimensions.get('screen')
const SCREEN_WIDTH = SCREEN.width
function ImageViewing({
images,
keyExtractor,
imageIndex,
visible,
onRequestClose,
onLongPress = () => {},
onImageIndexChange,
backgroundColor = DEFAULT_BG_COLOR,
swipeToCloseEnabled,
doubleTapToZoomEnabled,
delayLongPress = DEFAULT_DELAY_LONG_PRESS,
HeaderComponent,
FooterComponent,
}: Props) {
const imageList = useRef<VirtualizedList<ImageSource>>(null)
const [opacity, onRequestCloseEnhanced] = useRequestClose(onRequestClose)
const [currentImageIndex, onScroll] = useImageIndexChange(imageIndex, SCREEN)
const [headerTransform, footerTransform, toggleBarsVisible] =
useAnimatedComponents()
useEffect(() => {
if (onImageIndexChange) {
onImageIndexChange(currentImageIndex)
}
}, [currentImageIndex, onImageIndexChange])
const onZoom = useCallback(
(isScaled: boolean) => {
// @ts-ignore
imageList?.current?.setNativeProps({scrollEnabled: !isScaled})
toggleBarsVisible(!isScaled)
},
[toggleBarsVisible],
)
const onLayout = useCallback(() => {
if (imageIndex) {
imageList.current?.scrollToIndex({index: imageIndex, animated: false})
}
}, [imageList, imageIndex])
if (!visible) {
return null
}
return (
<View style={styles.screen} onLayout={onLayout}>
<ModalsContainer />
<View style={[styles.container, {opacity, backgroundColor}]}>
<Animated.View style={[styles.header, {transform: headerTransform}]}>
{typeof HeaderComponent !== 'undefined' ? (
React.createElement(HeaderComponent, {
imageIndex: currentImageIndex,
})
) : (
<ImageDefaultHeader onRequestClose={onRequestCloseEnhanced} />
)}
</Animated.View>
<VirtualizedList
ref={imageList}
data={images}
horizontal
pagingEnabled
showsHorizontalScrollIndicator={false}
showsVerticalScrollIndicator={false}
getItem={(_, index) => images[index]}
getItemCount={() => images.length}
getItemLayout={(_, index) => ({
length: SCREEN_WIDTH,
offset: SCREEN_WIDTH * index,
index,
})}
renderItem={({item: imageSrc}) => (
<ImageItem
onZoom={onZoom}
imageSrc={imageSrc}
onRequestClose={onRequestCloseEnhanced}
onLongPress={onLongPress}
delayLongPress={delayLongPress}
swipeToCloseEnabled={swipeToCloseEnabled}
doubleTapToZoomEnabled={doubleTapToZoomEnabled}
/>
)}
onMomentumScrollEnd={onScroll}
//@ts-ignore
keyExtractor={(imageSrc, index) =>
keyExtractor
? keyExtractor(imageSrc, index)
: typeof imageSrc === 'number'
? `${imageSrc}`
: imageSrc.uri
}
/>
{typeof FooterComponent !== 'undefined' && (
<Animated.View style={[styles.footer, {transform: footerTransform}]}>
{React.createElement(FooterComponent, {
imageIndex: currentImageIndex,
})}
</Animated.View>
)}
</View>
</View>
)
}
const styles = StyleSheet.create({
screen: {
position: 'absolute',
},
container: {
flex: 1,
backgroundColor: '#000',
},
header: {
position: 'absolute',
width: '100%',
zIndex: 1,
top: 0,
},
footer: {
position: 'absolute',
width: '100%',
zIndex: 1,
bottom: 0,
},
})
const EnhancedImageViewing = (props: Props) => (
<ImageViewing key={props.imageIndex} {...props} />
)
export default EnhancedImageViewing
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