Files
react-native-vision-camera/package/example/src/camera.tsx

113 lines
3.5 KiB
TypeScript

import React, { useCallback, useRef, useState } from 'react'
import { Button, StyleSheet, Text, View } from 'react-native'
import {
Camera,
useCameraPermission,
useCameraDevice,
useCameraFormat,
PhotoFile,
VideoFile,
CameraRuntimeError,
Orientation,
CameraDevice,
} from 'react-native-vision-camera'
import { RecordingButton } from './capture-button'
import { useIsForeground } from './is-foreground'
export default function CameraScreen() {
const camera = useRef<Camera>(null)
const { hasPermission, requestPermission } = useCameraPermission()
const [isCameraInitialized, setIsCameraInitialized] = useState<boolean>(false)
const isForeground: boolean = useIsForeground()
const isActive: boolean = isForeground // Should be combined with isFocused hook
const onError = useCallback((error: CameraRuntimeError) => {
console.error(error)
}, [])
const onInitialized = useCallback(() => {
console.log('Camera initialized!')
setIsCameraInitialized(true)
}, [])
const onMediaCaptured = useCallback((media: PhotoFile | VideoFile) => {
console.log(`Media captured! ${JSON.stringify(media)}`)
}, [])
if (!hasPermission) requestPermission()
// Error handling in case they refuse to give permission
const device = useCameraDevice('back')
const format = useCameraFormat(device, [{ videoResolution: { width: 3048, height: 2160 } }, { fps: 60 }]) // this sets as a target
//Orientation detection
const [orientation, setOrientation] = useState<Orientation>('portrait')
const toggleOrientation = () => {
setOrientation(
(currentOrientation) => (currentOrientation === 'landscape-left' ? 'portrait' : 'landscape-left'), // Can adjust this and the type to match what we want
)
}
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (device === null) return <Text>Camera not available. Does user have permissions: {hasPermission}</Text>
return (
hasPermission && (
<View style={styles.container}>
<Camera
ref={camera}
style={StyleSheet.absoluteFill}
device={device as CameraDevice}
format={format}
onInitialized={onInitialized}
onError={onError}
video={true}
orientation={orientation} // TODO: #60
isActive={isActive}
/>
<RecordingButton
style={[styles.captureButton, orientation === 'portrait' ? styles.portrait : styles.landscape]}
camera={camera}
onMediaCaptured={onMediaCaptured}
enabled={isCameraInitialized}
/>
<View style={[styles.button, orientation === 'portrait' ? styles.togglePortrait : styles.toggleLandscape]}>
<Button title="Toggle Orientation" onPress={toggleOrientation} color="#841584" accessibilityLabel="Toggle camera orientation" />
</View>
</View>
)
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: 'black',
},
captureButton: {
position: 'absolute',
alignSelf: 'center',
},
button: {
position: 'absolute',
alignSelf: 'center',
},
togglePortrait: {
bottom: 110, // needs refined
},
toggleLandscape: {
transform: [{ rotate: '90deg' }],
bottom: '43%', // Should come from SafeAreaProvider, hardcoded right now, should roughly appear above the button
left: 50, // needs refined
},
portrait: {
bottom: 20, // needs refined
},
landscape: {
bottom: '40%', // Should come from SafeAreaProvider
left: 20, // needs refined
},
})