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Merge pull request 'Replace example code' (#1) from loewy/camera into main

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Reviewed-on: #1
This commit is contained in:
Ivan Malison 2024-01-31 23:41:42 -07:00
commit 009838db75
17 changed files with 215 additions and 1327 deletions
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3
package/.gitignore vendored
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@ -67,3 +67,6 @@ package-lock.json
.cxx/
example/ios/vendor
#.direnv
.direnv

2
package/example/app.json
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@ -1,4 +1,4 @@
{
"name": "VisionCameraExample",
"displayName": "VisionCamera Example"
"displayName": "Railbird VisionCamera"
}

53
package/example/src/App.tsx
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@ -1,55 +1,6 @@
import { NavigationContainer } from '@react-navigation/native'
import React from 'react'
import { createNativeStackNavigator } from '@react-navigation/native-stack'
import { PermissionsPage } from './PermissionsPage'
import { MediaPage } from './MediaPage'
import { CameraPage } from './CameraPage'
import { CodeScannerPage } from './CodeScannerPage'
import type { Routes } from './Routes'
import { Camera } from 'react-native-vision-camera'
import { GestureHandlerRootView } from 'react-native-gesture-handler'
import { StyleSheet } from 'react-native'
import { DevicesPage } from './DevicesPage'
const Stack = createNativeStackNavigator<Routes>()
import CameraScreen from './camera'
export function App(): React.ReactElement | null {
const cameraPermission = Camera.getCameraPermissionStatus()
const microphonePermission = Camera.getMicrophonePermissionStatus()
console.log(`Re-rendering Navigator. Camera: ${cameraPermission} | Microphone: ${microphonePermission}`)
const showPermissionsPage = cameraPermission !== 'granted' || microphonePermission === 'not-determined'
return (
<NavigationContainer>
<GestureHandlerRootView style={styles.root}>
<Stack.Navigator
screenOptions={{
headerShown: false,
statusBarStyle: 'dark',
animationTypeForReplace: 'push',
}}
initialRouteName={showPermissionsPage ? 'PermissionsPage' : 'CameraPage'}>
<Stack.Screen name="PermissionsPage" component={PermissionsPage} />
<Stack.Screen name="CameraPage" component={CameraPage} />
<Stack.Screen name="CodeScannerPage" component={CodeScannerPage} />
<Stack.Screen
name="MediaPage"
component={MediaPage}
options={{
animation: 'none',
presentation: 'transparentModal',
}}
/>
<Stack.Screen name="Devices" component={DevicesPage} />
</Stack.Navigator>
</GestureHandlerRootView>
</NavigationContainer>
)
return <CameraScreen />
}
const styles = StyleSheet.create({
root: {
flex: 1,
},
})

280
package/example/src/CameraPage.tsx
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@ -1,280 +0,0 @@
import * as React from 'react'
import { useRef, useState, useCallback, useMemo } from 'react'
import { StyleSheet, Text, View } from 'react-native'
import { PinchGestureHandler, PinchGestureHandlerGestureEvent, TapGestureHandler } from 'react-native-gesture-handler'
import { CameraRuntimeError, PhotoFile, useCameraDevice, useCameraFormat, useFrameProcessor, VideoFile } from 'react-native-vision-camera'
import { Camera } from 'react-native-vision-camera'
import { CONTENT_SPACING, CONTROL_BUTTON_SIZE, MAX_ZOOM_FACTOR, SAFE_AREA_PADDING, SCREEN_HEIGHT, SCREEN_WIDTH } from './Constants'
import Reanimated, { Extrapolate, interpolate, useAnimatedGestureHandler, useAnimatedProps, useSharedValue } from 'react-native-reanimated'
import { useEffect } from 'react'
import { useIsForeground } from './hooks/useIsForeground'
import { StatusBarBlurBackground } from './views/StatusBarBlurBackground'
import { CaptureButton } from './views/CaptureButton'
import { PressableOpacity } from 'react-native-pressable-opacity'
import MaterialIcon from 'react-native-vector-icons/MaterialCommunityIcons'
import IonIcon from 'react-native-vector-icons/Ionicons'
import type { Routes } from './Routes'
import type { NativeStackScreenProps } from '@react-navigation/native-stack'
import { useIsFocused } from '@react-navigation/core'
import { examplePlugin } from './frame-processors/ExamplePlugin'
import { exampleKotlinSwiftPlugin } from './frame-processors/ExampleKotlinSwiftPlugin'
import { usePreferredCameraDevice } from './hooks/usePreferredCameraDevice'
const ReanimatedCamera = Reanimated.createAnimatedComponent(Camera)
Reanimated.addWhitelistedNativeProps({
zoom: true,
})
const SCALE_FULL_ZOOM = 3
type Props = NativeStackScreenProps<Routes, 'CameraPage'>
export function CameraPage({ navigation }: Props): React.ReactElement {
const camera = useRef<Camera>(null)
const [isCameraInitialized, setIsCameraInitialized] = useState(false)
const hasMicrophonePermission = useMemo(() => Camera.getMicrophonePermissionStatus() === 'granted', [])
const zoom = useSharedValue(0)
const isPressingButton = useSharedValue(false)
// check if camera page is active
const isFocussed = useIsFocused()
const isForeground = useIsForeground()
const isActive = isFocussed && isForeground
const [cameraPosition, setCameraPosition] = useState<'front' | 'back'>('back')
const [enableHdr, setEnableHdr] = useState(false)
const [flash, setFlash] = useState<'off' | 'on'>('off')
const [enableNightMode, setEnableNightMode] = useState(false)
// camera device settings
const [preferredDevice] = usePreferredCameraDevice()
let device = useCameraDevice(cameraPosition)
if (preferredDevice != null && preferredDevice.position === cameraPosition) {
// override default device with the one selected by the user in settings
device = preferredDevice
}
const [targetFps, setTargetFps] = useState(60)
const screenAspectRatio = SCREEN_HEIGHT / SCREEN_WIDTH
const format = useCameraFormat(device, [
{ fps: targetFps },
{ videoAspectRatio: screenAspectRatio },
{ videoResolution: 'max' },
{ photoAspectRatio: screenAspectRatio },
{ photoResolution: 'max' },
])
const fps = Math.min(format?.maxFps ?? 1, targetFps)
const supportsFlash = device?.hasFlash ?? false
const supportsHdr = format?.supportsPhotoHdr
const supports60Fps = useMemo(() => device?.formats.some((f) => f.maxFps >= 60), [device?.formats])
const canToggleNightMode = device?.supportsLowLightBoost ?? false
//#region Animated Zoom
// This just maps the zoom factor to a percentage value.
// so e.g. for [min, neutr., max] values [1, 2, 128] this would result in [0, 0.0081, 1]
const minZoom = device?.minZoom ?? 1
const maxZoom = Math.min(device?.maxZoom ?? 1, MAX_ZOOM_FACTOR)
const cameraAnimatedProps = useAnimatedProps(() => {
const z = Math.max(Math.min(zoom.value, maxZoom), minZoom)
return {
zoom: z,
}
}, [maxZoom, minZoom, zoom])
//#endregion
//#region Callbacks
const setIsPressingButton = useCallback(
(_isPressingButton: boolean) => {
isPressingButton.value = _isPressingButton
},
[isPressingButton],
)
// Camera callbacks
const onError = useCallback((error: CameraRuntimeError) => {
console.error(error)
}, [])
const onInitialized = useCallback(() => {
console.log('Camera initialized!')
setIsCameraInitialized(true)
}, [])
const onMediaCaptured = useCallback(
(media: PhotoFile | VideoFile, type: 'photo' | 'video') => {
console.log(`Media captured! ${JSON.stringify(media)}`)
navigation.navigate('MediaPage', {
path: media.path,
type: type,
})
},
[navigation],
)
const onFlipCameraPressed = useCallback(() => {
setCameraPosition((p) => (p === 'back' ? 'front' : 'back'))
}, [])
const onFlashPressed = useCallback(() => {
setFlash((f) => (f === 'off' ? 'on' : 'off'))
}, [])
//#endregion
//#region Tap Gesture
const onDoubleTap = useCallback(() => {
onFlipCameraPressed()
}, [onFlipCameraPressed])
//#endregion
//#region Effects
const neutralZoom = device?.neutralZoom ?? 1
useEffect(() => {
// Run everytime the neutralZoomScaled value changes. (reset zoom when device changes)
zoom.value = neutralZoom
}, [neutralZoom, zoom])
//#endregion
//#region Pinch to Zoom Gesture
// The gesture handler maps the linear pinch gesture (0 - 1) to an exponential curve since a camera's zoom
// function does not appear linear to the user. (aka zoom 0.1 -> 0.2 does not look equal in difference as 0.8 -> 0.9)
const onPinchGesture = useAnimatedGestureHandler<PinchGestureHandlerGestureEvent, { startZoom?: number }>({
onStart: (_, context) => {
context.startZoom = zoom.value
},
onActive: (event, context) => {
// we're trying to map the scale gesture to a linear zoom here
const startZoom = context.startZoom ?? 0
const scale = interpolate(event.scale, [1 - 1 / SCALE_FULL_ZOOM, 1, SCALE_FULL_ZOOM], [-1, 0, 1], Extrapolate.CLAMP)
zoom.value = interpolate(scale, [-1, 0, 1], [minZoom, startZoom, maxZoom], Extrapolate.CLAMP)
},
})
//#endregion
useEffect(() => {
const f =
format != null
? `(${format.photoWidth}x${format.photoHeight} photo / ${format.videoWidth}x${format.videoHeight}@${format.maxFps} video @ ${fps}fps)`
: undefined
console.log(`Camera: ${device?.name} | Format: ${f}`)
}, [device?.name, format, fps])
const frameProcessor = useFrameProcessor((frame) => {
'worklet'
// console.log(`${frame.timestamp}: ${frame.width}x${frame.height} ${frame.pixelFormat} Frame (${frame.orientation})`)
// examplePlugin(frame)
// exampleKotlinSwiftPlugin(frame)
}, [])
return (
<View style={styles.container}>
{device != null && (
<PinchGestureHandler onGestureEvent={onPinchGesture} enabled={isActive}>
<Reanimated.View style={StyleSheet.absoluteFill}>
<TapGestureHandler onEnded={onDoubleTap} numberOfTaps={2}>
<ReanimatedCamera
ref={camera}
style={StyleSheet.absoluteFill}
device={device}
format={format}
fps={fps}
photoHdr={enableHdr}
videoHdr={enableHdr}
lowLightBoost={device.supportsLowLightBoost && enableNightMode}
isActive={isActive}
onInitialized={onInitialized}
onError={onError}
enableZoomGesture={false}
animatedProps={cameraAnimatedProps}
exposure={0}
enableFpsGraph={true}
orientation="portrait"
photo={true}
video={true}
audio={hasMicrophonePermission}
frameProcessor={frameProcessor}
/>
</TapGestureHandler>
</Reanimated.View>
</PinchGestureHandler>
)}
<CaptureButton
style={styles.captureButton}
camera={camera}
onMediaCaptured={onMediaCaptured}
cameraZoom={zoom}
minZoom={minZoom}
maxZoom={maxZoom}
flash={supportsFlash ? flash : 'off'}
enabled={isCameraInitialized && isActive}
setIsPressingButton={setIsPressingButton}
/>
<StatusBarBlurBackground />
<View style={styles.rightButtonRow}>
<PressableOpacity style={styles.button} onPress={onFlipCameraPressed} disabledOpacity={0.4}>
<IonIcon name="camera-reverse" color="white" size={24} />
</PressableOpacity>
{supportsFlash && (
<PressableOpacity style={styles.button} onPress={onFlashPressed} disabledOpacity={0.4}>
<IonIcon name={flash === 'on' ? 'flash' : 'flash-off'} color="white" size={24} />
</PressableOpacity>
)}
{supports60Fps && (
<PressableOpacity style={styles.button} onPress={() => setTargetFps((t) => (t === 30 ? 60 : 30))}>
<Text style={styles.text}>{`${targetFps}\nFPS`}</Text>
</PressableOpacity>
)}
{supportsHdr && (
<PressableOpacity style={styles.button} onPress={() => setEnableHdr((h) => !h)}>
<MaterialIcon name={enableHdr ? 'hdr' : 'hdr-off'} color="white" size={24} />
</PressableOpacity>
)}
{canToggleNightMode && (
<PressableOpacity style={styles.button} onPress={() => setEnableNightMode(!enableNightMode)} disabledOpacity={0.4}>
<IonIcon name={enableNightMode ? 'moon' : 'moon-outline'} color="white" size={24} />
</PressableOpacity>
)}
<PressableOpacity style={styles.button} onPress={() => navigation.navigate('Devices')}>
<IonIcon name="settings-outline" color="white" size={24} />
</PressableOpacity>
<PressableOpacity style={styles.button} onPress={() => navigation.navigate('CodeScannerPage')}>
<IonIcon name="qr-code-outline" color="white" size={24} />
</PressableOpacity>
</View>
</View>
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: 'black',
},
captureButton: {
position: 'absolute',
alignSelf: 'center',
bottom: SAFE_AREA_PADDING.paddingBottom,
},
button: {
marginBottom: CONTENT_SPACING,
width: CONTROL_BUTTON_SIZE,
height: CONTROL_BUTTON_SIZE,
borderRadius: CONTROL_BUTTON_SIZE / 2,
backgroundColor: 'rgba(140, 140, 140, 0.3)',
justifyContent: 'center',
alignItems: 'center',
},
rightButtonRow: {
position: 'absolute',
right: SAFE_AREA_PADDING.paddingRight,
top: SAFE_AREA_PADDING.paddingTop,
},
text: {
color: 'white',
fontSize: 11,
fontWeight: 'bold',
textAlign: 'center',
},
})

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package/example/src/CodeScannerPage.tsx
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@ -1,120 +0,0 @@
import * as React from 'react'
import { useCallback, useRef, useState } from 'react'
import { Alert, AlertButton, Linking, StyleSheet, View } from 'react-native'
import { Code, useCameraDevice, useCodeScanner } from 'react-native-vision-camera'
import { Camera } from 'react-native-vision-camera'
import { CONTENT_SPACING, CONTROL_BUTTON_SIZE, SAFE_AREA_PADDING } from './Constants'
import { useIsForeground } from './hooks/useIsForeground'
import { StatusBarBlurBackground } from './views/StatusBarBlurBackground'
import { PressableOpacity } from 'react-native-pressable-opacity'
import IonIcon from 'react-native-vector-icons/Ionicons'
import type { Routes } from './Routes'
import type { NativeStackScreenProps } from '@react-navigation/native-stack'
import { useIsFocused } from '@react-navigation/core'
const showCodeAlert = (value: string, onDismissed: () => void): void => {
const buttons: AlertButton[] = [
{
text: 'Close',
style: 'cancel',
onPress: onDismissed,
},
]
if (value.startsWith('http')) {
buttons.push({
text: 'Open URL',
onPress: () => {
Linking.openURL(value)
onDismissed()
},
})
}
Alert.alert('Scanned Code', value, buttons)
}
type Props = NativeStackScreenProps<Routes, 'CodeScannerPage'>
export function CodeScannerPage({ navigation }: Props): React.ReactElement {
// 1. Use a simple default back camera
const device = useCameraDevice('back')
// 2. Only activate Camera when the app is focused and this screen is currently opened
const isFocused = useIsFocused()
const isForeground = useIsForeground()
const isActive = isFocused && isForeground
// 3. (Optional) enable a torch setting
const [torch, setTorch] = useState(false)
// 4. On code scanned, we show an aler to the user
const isShowingAlert = useRef(false)
const onCodeScanned = useCallback((codes: Code[]) => {
console.log(`Scanned ${codes.length} codes:`, codes)
const value = codes[0]?.value
if (value == null) return
if (isShowingAlert.current) return
showCodeAlert(value, () => {
isShowingAlert.current = false
})
isShowingAlert.current = true
}, [])
// 5. Initialize the Code Scanner to scan QR codes and Barcodes
const codeScanner = useCodeScanner({
codeTypes: ['qr', 'ean-13'],
onCodeScanned: onCodeScanned,
})
return (
<View style={styles.container}>
{device != null && (
<Camera
style={StyleSheet.absoluteFill}
device={device}
isActive={isActive}
codeScanner={codeScanner}
torch={torch ? 'on' : 'off'}
enableZoomGesture={true}
/>
)}
<StatusBarBlurBackground />
<View style={styles.rightButtonRow}>
<PressableOpacity style={styles.button} onPress={() => setTorch(!torch)} disabledOpacity={0.4}>
<IonIcon name={torch ? 'flash' : 'flash-off'} color="white" size={24} />
</PressableOpacity>
</View>
{/* Back Button */}
<PressableOpacity style={styles.backButton} onPress={navigation.goBack}>
<IonIcon name="chevron-back" color="white" size={35} />
</PressableOpacity>
</View>
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: 'black',
},
button: {
marginBottom: CONTENT_SPACING,
width: CONTROL_BUTTON_SIZE,
height: CONTROL_BUTTON_SIZE,
borderRadius: CONTROL_BUTTON_SIZE / 2,
backgroundColor: 'rgba(140, 140, 140, 0.3)',
justifyContent: 'center',
alignItems: 'center',
},
rightButtonRow: {
position: 'absolute',
right: SAFE_AREA_PADDING.paddingRight,
top: SAFE_AREA_PADDING.paddingTop,
},
backButton: {
position: 'absolute',
left: SAFE_AREA_PADDING.paddingLeft,
top: SAFE_AREA_PADDING.paddingTop,
},
})

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package/example/src/DevicesPage.tsx
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import type { NativeStackScreenProps } from '@react-navigation/native-stack'
import React, { useCallback, useMemo } from 'react'
import IonIcon from 'react-native-vector-icons/Ionicons'
import { StyleSheet, View, Text, ListRenderItemInfo, SectionList, SectionListData } from 'react-native'
import { CameraDevice, useCameraDevices } from 'react-native-vision-camera'
import { CONTENT_SPACING, SAFE_AREA_PADDING } from './Constants'
import type { Routes } from './Routes'
import { PressableOpacity } from 'react-native-pressable-opacity'
import { usePreferredCameraDevice } from './hooks/usePreferredCameraDevice'
const keyExtractor = (item: CameraDevice): string => item.id
interface SectionType {
position: CameraDevice['position'] | 'preferred'
}
type SectionData = SectionListData<CameraDevice, SectionType>
interface DeviceProps {
device: CameraDevice
onPress: () => void
}
function Device({ device, onPress }: DeviceProps): React.ReactElement {
const maxPhotoRes = useMemo(
() =>
device.formats.reduce((prev, curr) => {
if (curr.photoWidth * curr.photoHeight > prev.photoWidth * prev.photoHeight) return curr
return prev
}),
[device.formats],
)
const maxVideoRes = useMemo(
() =>
device.formats.reduce((prev, curr) => {
if (curr.videoWidth * curr.videoHeight > prev.videoWidth * prev.videoHeight) return curr
return prev
}),
[device.formats],
)
const deviceTypes = useMemo(() => device.physicalDevices.map((t) => t.replace('-camera', '')).join(' + '), [device.physicalDevices])
return (
<PressableOpacity style={styles.itemContainer} onPress={onPress}>
<View style={styles.horizontal}>
<IonIcon name="camera" size={18} color="black" />
<Text style={styles.deviceName} numberOfLines={3}>
{device.name} <Text style={styles.devicePosition}>({device.position})</Text>
</Text>
</View>
<Text style={styles.deviceTypes}>{deviceTypes}</Text>
<View style={styles.horizontal}>
<IonIcon name="camera" size={12} color="black" />
<Text style={styles.resolutionText}>
{maxPhotoRes.photoWidth}x{maxPhotoRes.photoHeight}
</Text>
</View>
<View style={styles.horizontal}>
<IonIcon name="videocam" size={12} color="black" />
<Text style={styles.resolutionText}>
{maxVideoRes.videoWidth}x{maxVideoRes.videoHeight} @ {maxVideoRes.maxFps} FPS
</Text>
</View>
<Text style={styles.deviceId} numberOfLines={2} ellipsizeMode="middle">
{device.id}
</Text>
</PressableOpacity>
)
}
type Props = NativeStackScreenProps<Routes, 'Devices'>
export function DevicesPage({ navigation }: Props): React.ReactElement {
const devices = useCameraDevices()
const [preferredDevice, setPreferredDevice] = usePreferredCameraDevice()
const sections = useMemo((): SectionData[] => {
return [
{
position: 'preferred',
data: preferredDevice != null ? [preferredDevice] : [],
},
{
position: 'back',
data: devices.filter((d) => d.position === 'back'),
},
{
position: 'front',
data: devices.filter((d) => d.position === 'front'),
},
{
position: 'external',
data: devices.filter((d) => d.position === 'external'),
},
]
}, [devices, preferredDevice])
const onDevicePressed = useCallback(
(device: CameraDevice) => {
setPreferredDevice(device)
navigation.navigate('CameraPage')
},
[navigation, setPreferredDevice],
)
const renderItem = useCallback(
({ item }: ListRenderItemInfo<CameraDevice>) => {
return <Device device={item} onPress={() => onDevicePressed(item)} />
},
[onDevicePressed],
)
const renderSectionHeader = useCallback(({ section }: { section: SectionData }) => {
if (section.data.length === 0) return null
return (
<View style={styles.sectionHeader}>
<Text style={styles.sectionHeaderText}>{section.position.toUpperCase()}</Text>
</View>
)
}, [])
return (
<View style={styles.container}>
<View style={styles.headerContainer}>
<View style={styles.horizontal}>
<PressableOpacity style={styles.backButton} onPress={navigation.goBack}>
<IonIcon name="chevron-back" size={35} color="black" />
</PressableOpacity>
<Text style={styles.header}>Camera Devices</Text>
</View>
<Text style={styles.subHeader}>
These are all detected Camera devices on your phone. This list will automatically update as you plug devices in or out.
</Text>
</View>
<SectionList
style={styles.list}
contentContainerStyle={styles.listContent}
sections={sections}
keyExtractor={keyExtractor}
renderItem={renderItem}
renderSectionHeader={renderSectionHeader}
stickySectionHeadersEnabled={false}
/>
</View>
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: 'white',
},
headerContainer: {
paddingTop: SAFE_AREA_PADDING.paddingTop,
paddingLeft: SAFE_AREA_PADDING.paddingLeft,
paddingRight: SAFE_AREA_PADDING.paddingRight,
},
header: {
fontSize: 38,
fontWeight: 'bold',
maxWidth: '80%',
},
subHeader: {
marginTop: 10,
fontSize: 18,
maxWidth: '80%',
},
list: {
marginTop: CONTENT_SPACING,
},
listContent: {
paddingBottom: SAFE_AREA_PADDING.paddingBottom,
},
sectionHeader: {
paddingHorizontal: CONTENT_SPACING / 2,
paddingVertical: 5,
},
sectionHeaderText: {
opacity: 0.4,
fontSize: 16,
},
itemContainer: {
paddingHorizontal: CONTENT_SPACING,
paddingVertical: 7,
},
deviceName: {
fontSize: 17,
marginLeft: 5,
flexShrink: 1,
fontWeight: 'bold',
},
devicePosition: {
opacity: 0.4,
},
deviceId: {
fontSize: 12,
opacity: 0.4,
},
deviceTypes: {
fontSize: 12,
opacity: 0.4,
},
horizontal: {
flexDirection: 'row',
alignItems: 'center',
},
backButton: {
width: 40,
height: 40,
marginTop: 7,
},
resolutionText: {
marginLeft: 5,
fontSize: 12,
},
})

151
package/example/src/MediaPage.tsx
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import React, { useCallback, useMemo, useState } from 'react'
import { StyleSheet, View, ActivityIndicator, PermissionsAndroid, Platform } from 'react-native'
import Video, { LoadError, OnLoadData } from 'react-native-video'
import { SAFE_AREA_PADDING } from './Constants'
import { useIsForeground } from './hooks/useIsForeground'
import { PressableOpacity } from 'react-native-pressable-opacity'
import IonIcon from 'react-native-vector-icons/Ionicons'
import { Alert } from 'react-native'
import { CameraRoll } from '@react-native-camera-roll/camera-roll'
import { StatusBarBlurBackground } from './views/StatusBarBlurBackground'
import type { NativeStackScreenProps } from '@react-navigation/native-stack'
import type { Routes } from './Routes'
import { useIsFocused } from '@react-navigation/core'
import FastImage, { OnLoadEvent } from 'react-native-fast-image'
const requestSavePermission = async (): Promise<boolean> => {
if (Platform.OS !== 'android') return true
const permission = PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE
if (permission == null) return false
let hasPermission = await PermissionsAndroid.check(permission)
if (!hasPermission) {
const permissionRequestResult = await PermissionsAndroid.request(permission)
hasPermission = permissionRequestResult === 'granted'
}
return hasPermission
}
const isVideoOnLoadEvent = (event: OnLoadData | OnLoadEvent): event is OnLoadData => 'duration' in event && 'naturalSize' in event
type Props = NativeStackScreenProps<Routes, 'MediaPage'>
export function MediaPage({ navigation, route }: Props): React.ReactElement {
const { path, type } = route.params
const [hasMediaLoaded, setHasMediaLoaded] = useState(false)
const isForeground = useIsForeground()
const isScreenFocused = useIsFocused()
const isVideoPaused = !isForeground || !isScreenFocused
const [savingState, setSavingState] = useState<'none' | 'saving' | 'saved'>('none')
const onMediaLoad = useCallback((event: OnLoadData | OnLoadEvent) => {
if (isVideoOnLoadEvent(event)) {
console.log(
`Video loaded. Size: ${event.naturalSize.width}x${event.naturalSize.height} (${event.naturalSize.orientation}, ${event.duration} seconds)`,
)
} else {
console.log(`Image loaded. Size: ${event.nativeEvent.width}x${event.nativeEvent.height}`)
}
}, [])
const onMediaLoadEnd = useCallback(() => {
console.log('media has loaded.')
setHasMediaLoaded(true)
}, [])
const onMediaLoadError = useCallback((error: LoadError) => {
console.log(`failed to load media: ${JSON.stringify(error)}`)
}, [])
const onSavePressed = useCallback(async () => {
try {
setSavingState('saving')
const hasPermission = await requestSavePermission()
if (!hasPermission) {
Alert.alert('Permission denied!', 'Vision Camera does not have permission to save the media to your camera roll.')
return
}
await CameraRoll.save(`file://${path}`, {
type: type,
})
setSavingState('saved')
} catch (e) {
const message = e instanceof Error ? e.message : JSON.stringify(e)
setSavingState('none')
Alert.alert('Failed to save!', `An unexpected error occured while trying to save your ${type}. ${message}`)
}
}, [path, type])
const source = useMemo(() => ({ uri: `file://${path}/1.mp4` }), [path])
const screenStyle = useMemo(() => ({ opacity: hasMediaLoaded ? 1 : 0 }), [hasMediaLoaded])
return (
<View style={[styles.container, screenStyle]}>
{type === 'photo' && (
<FastImage source={source} style={StyleSheet.absoluteFill} resizeMode="cover" onLoadEnd={onMediaLoadEnd} onLoad={onMediaLoad} />
)}
{type === 'video' && (
<Video
source={source}
style={StyleSheet.absoluteFill}
paused={isVideoPaused}
resizeMode="cover"
posterResizeMode="cover"
allowsExternalPlayback={false}
automaticallyWaitsToMinimizeStalling={false}
disableFocus={true}
repeat={true}
useTextureView={false}
controls={false}
playWhenInactive={true}
ignoreSilentSwitch="ignore"
onReadyForDisplay={onMediaLoadEnd}
onLoad={onMediaLoad}
onError={onMediaLoadError}
/>
)}
<PressableOpacity style={styles.closeButton} onPress={navigation.goBack}>
<IonIcon name="close" size={35} color="white" style={styles.icon} />
</PressableOpacity>
<PressableOpacity style={styles.saveButton} onPress={onSavePressed} disabled={savingState !== 'none'}>
{savingState === 'none' && <IonIcon name="download" size={35} color="white" style={styles.icon} />}
{savingState === 'saved' && <IonIcon name="checkmark" size={35} color="white" style={styles.icon} />}
{savingState === 'saving' && <ActivityIndicator color="white" />}
</PressableOpacity>
<StatusBarBlurBackground />
</View>
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: 'white',
},
closeButton: {
position: 'absolute',
top: SAFE_AREA_PADDING.paddingTop,
left: SAFE_AREA_PADDING.paddingLeft,
width: 40,
height: 40,
},
saveButton: {
position: 'absolute',
bottom: SAFE_AREA_PADDING.paddingBottom,
left: SAFE_AREA_PADDING.paddingLeft,
width: 40,
height: 40,
},
icon: {
textShadowColor: 'black',
textShadowOffset: {
height: 0,
width: 0,
},
textShadowRadius: 1,
},
})

96
package/example/src/PermissionsPage.tsx
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import type { NativeStackScreenProps } from '@react-navigation/native-stack'
import React, { useCallback, useEffect, useState } from 'react'
import { ImageRequireSource, Linking } from 'react-native'
import { StyleSheet, View, Text, Image } from 'react-native'
import { Camera, CameraPermissionStatus } from 'react-native-vision-camera'
import { CONTENT_SPACING, SAFE_AREA_PADDING } from './Constants'
import type { Routes } from './Routes'
// eslint-disable-next-line @typescript-eslint/no-var-requires
const BANNER_IMAGE = require('./img/11.png') as ImageRequireSource
type Props = NativeStackScreenProps<Routes, 'PermissionsPage'>
export function PermissionsPage({ navigation }: Props): React.ReactElement {
const [cameraPermissionStatus, setCameraPermissionStatus] = useState<CameraPermissionStatus>('not-determined')
const [microphonePermissionStatus, setMicrophonePermissionStatus] = useState<CameraPermissionStatus>('not-determined')
const requestMicrophonePermission = useCallback(async () => {
console.log('Requesting microphone permission...')
const permission = await Camera.requestMicrophonePermission()
console.log(`Microphone permission status: ${permission}`)
if (permission === 'denied') await Linking.openSettings()
setMicrophonePermissionStatus(permission)
}, [])
const requestCameraPermission = useCallback(async () => {
console.log('Requesting camera permission...')
const permission = await Camera.requestCameraPermission()
console.log(`Camera permission status: ${permission}`)
if (permission === 'denied') await Linking.openSettings()
setCameraPermissionStatus(permission)
}, [])
useEffect(() => {
if (cameraPermissionStatus === 'granted' && microphonePermissionStatus === 'granted') navigation.replace('CameraPage')
}, [cameraPermissionStatus, microphonePermissionStatus, navigation])
return (
<View style={styles.container}>
<Image source={BANNER_IMAGE} style={styles.banner} />
<Text style={styles.welcome}>Welcome to{'\n'}Vision Camera.</Text>
<View style={styles.permissionsContainer}>
{cameraPermissionStatus !== 'granted' && (
<Text style={styles.permissionText}>
Vision Camera needs <Text style={styles.bold}>Camera permission</Text>.{' '}
<Text style={styles.hyperlink} onPress={requestCameraPermission}>
Grant
</Text>
</Text>
)}
{microphonePermissionStatus !== 'granted' && (
<Text style={styles.permissionText}>
Vision Camera needs <Text style={styles.bold}>Microphone permission</Text>.{' '}
<Text style={styles.hyperlink} onPress={requestMicrophonePermission}>
Grant
</Text>
</Text>
)}
</View>
</View>
)
}
const styles = StyleSheet.create({
welcome: {
fontSize: 38,
fontWeight: 'bold',
maxWidth: '80%',
},
banner: {
position: 'absolute',
opacity: 0.4,
bottom: 0,
left: 0,
},
container: {
flex: 1,
backgroundColor: 'white',
...SAFE_AREA_PADDING,
},
permissionsContainer: {
marginTop: CONTENT_SPACING * 2,
},
permissionText: {
fontSize: 17,
},
hyperlink: {
color: '#007aff',
fontWeight: 'bold',
},
bold: {
fontWeight: 'bold',
},
})

10
package/example/src/Routes.ts
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@ -1,10 +0,0 @@
export type Routes = {
PermissionsPage: undefined
CameraPage: undefined
CodeScannerPage: undefined
MediaPage: {
path: string
type: 'video' | 'photo'
}
Devices: undefined
}

112
package/example/src/camera.tsx Normal file
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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
},
})

96
package/example/src/capture-button.tsx Normal file
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import React, { useCallback, useRef, useState } from 'react'
import { TouchableOpacity, StyleSheet, View, StyleProp, ViewStyle } from 'react-native'
import { Camera, VideoFile } from 'react-native-vision-camera'
interface RecordingButtonProps {
style: StyleProp<ViewStyle>
camera: React.RefObject<Camera>
onMediaCaptured: (media: VideoFile, mediaType: string) => void
enabled: boolean
}
export const RecordingButton: React.FC<RecordingButtonProps> = ({ style, camera, onMediaCaptured, enabled }) => {
const isRecording = useRef(false)
// UseRef won't trigger a re-render
const [, setRecordingState] = useState(false)
const onStoppedRecording = useCallback(() => {
isRecording.current = false
setRecordingState(false)
console.log('stopped recording video!')
}, [])
const stopRecording = useCallback(async () => {
try {
if (camera.current === null) throw new Error('Camera ref is null!') // Error handling could be more graceful
console.log('calling stopRecording()...')
await camera.current.stopRecording()
console.log('called stopRecording()!')
} catch (e) {
console.error('failed to stop recording!', e)
}
}, [camera])
const startRecording = useCallback(() => {
console.log('press')
try {
if (camera.current === null) throw new Error('Camera ref is null!') // Error handling could be more graceful
console.log('calling startRecording()...')
camera.current.startRecording({
onRecordingError: (error) => {
console.error('Recording failed!', error)
onStoppedRecording()
},
onRecordingFinished: (video) => {
onMediaCaptured(video, 'video')
onStoppedRecording()
},
})
console.log('called startRecording()!')
isRecording.current = true
setRecordingState(true)
} catch (e) {
console.error('failed to start recording!', e, 'camera')
}
}, [camera, onMediaCaptured, onStoppedRecording])
const handlePress = () => {
if (isRecording.current) stopRecording()
else startRecording()
}
return (
<TouchableOpacity style={[styles.captureButton, style]} onPress={handlePress} disabled={!enabled}>
<View style={isRecording.current ? styles.recordingSquare : styles.innerCircle} />
</TouchableOpacity>
)
}
const styles = StyleSheet.create({
captureButton: {
height: 80,
width: 80,
borderRadius: 40,
borderWidth: 3,
borderColor: 'white',
backgroundColor: 'transparent',
justifyContent: 'center',
alignItems: 'center',
},
innerCircle: {
height: 70,
width: 70,
borderRadius: 35,
backgroundColor: '#FF3B30',
},
recordingSquare: {
height: 40,
width: 40,
borderRadius: 10,
backgroundColor: '#FF3B30',
},
})
export default RecordingButton

17
package/example/src/frame-processors/ExampleKotlinSwiftPlugin.ts
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@ -1,17 +0,0 @@
import { VisionCameraProxy, Frame } from 'react-native-vision-camera'
const plugin = VisionCameraProxy.initFrameProcessorPlugin('example_kotlin_swift_plugin', { foo: 'bar' })
export function exampleKotlinSwiftPlugin(frame: Frame): string[] {
'worklet'
if (plugin == null) throw new Error('Failed to load Frame Processor Plugin "example_kotlin_swift_plugin"!')
return plugin.call(frame, {
someString: 'hello!',
someBoolean: true,
someNumber: 42,
someObject: { test: 0, second: 'test' },
someArray: ['another test', 5],
}) as string[]
}

25
package/example/src/frame-processors/ExamplePlugin.ts
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@ -1,25 +0,0 @@
import { VisionCameraProxy, Frame } from 'react-native-vision-camera'
const plugin = VisionCameraProxy.initFrameProcessorPlugin('example_plugin')
interface Result {
example_array: (string | number | boolean)[]
example_array_buffer: ArrayBuffer
example_str: string
example_bool: boolean
example_double: number
}
export function examplePlugin(frame: Frame): Result {
'worklet'
if (plugin == null) throw new Error('Failed to load Frame Processor Plugin "example_plugin"!')
return plugin.call(frame, {
someString: 'hello!',
someBoolean: true,
someNumber: 42,
someObject: { test: 0, second: 'test' },
someArray: ['another test', 5],
}) as unknown as Result
}

20
package/example/src/hooks/usePreferredCameraDevice.ts
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@ -1,20 +0,0 @@
import { useMMKVString } from 'react-native-mmkv'
import { CameraDevice } from '../../../src/CameraDevice'
import { useCallback, useMemo } from 'react'
import { useCameraDevices } from '../../../src/hooks/useCameraDevices'
export function usePreferredCameraDevice(): [CameraDevice | undefined, (device: CameraDevice) => void] {
const [preferredDeviceId, setPreferredDeviceId] = useMMKVString('camera.preferredDeviceId')
const set = useCallback(
(device: CameraDevice) => {
setPreferredDeviceId(device.id)
},
[setPreferredDeviceId],
)
const devices = useCameraDevices()
const device = useMemo(() => devices.find((d) => d.id === preferredDeviceId), [devices, preferredDeviceId])
return [device, set]
}

3
package/example/src/hooks/useIsForeground.ts → package/example/src/is-foreground.tsx
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@ -1,5 +1,4 @@
import { useState } from 'react'
import { useEffect } from 'react'
import { useState, useEffect } from 'react'
import { AppState, AppStateStatus } from 'react-native'
export const useIsForeground = (): boolean => {

307
package/example/src/views/CaptureButton.tsx
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@ -1,307 +0,0 @@
import React, { useCallback, useMemo, useRef } from 'react'
import { StyleSheet, View, ViewProps } from 'react-native'
import {
PanGestureHandler,
PanGestureHandlerGestureEvent,
State,
TapGestureHandler,
TapGestureHandlerStateChangeEvent,
} from 'react-native-gesture-handler'
import Reanimated, {
cancelAnimation,
Easing,
Extrapolate,
interpolate,
useAnimatedStyle,
withSpring,
withTiming,
useAnimatedGestureHandler,
useSharedValue,
withRepeat,
} from 'react-native-reanimated'
import type { Camera, PhotoFile, TakePhotoOptions, VideoFile } from 'react-native-vision-camera'
import { CAPTURE_BUTTON_SIZE, SCREEN_HEIGHT, SCREEN_WIDTH } from './../Constants'
const PAN_GESTURE_HANDLER_FAIL_X = [-SCREEN_WIDTH, SCREEN_WIDTH]
const PAN_GESTURE_HANDLER_ACTIVE_Y = [-2, 2]
const START_RECORDING_DELAY = 200
const BORDER_WIDTH = CAPTURE_BUTTON_SIZE * 0.1
interface Props extends ViewProps {
camera: React.RefObject<Camera>
onMediaCaptured: (media: PhotoFile | VideoFile, type: 'photo' | 'video') => void
minZoom: number
maxZoom: number
cameraZoom: Reanimated.SharedValue<number>
flash: 'off' | 'on'
enabled: boolean
setIsPressingButton: (isPressingButton: boolean) => void
}
const _CaptureButton: React.FC<Props> = ({
camera,
onMediaCaptured,
minZoom,
maxZoom,
cameraZoom,
flash,
enabled,
setIsPressingButton,
style,
...props
}): React.ReactElement => {
const pressDownDate = useRef<Date | undefined>(undefined)
const isRecording = useRef(false)
const recordingProgress = useSharedValue(0)
const takePhotoOptions = useMemo<TakePhotoOptions>(
() => ({
qualityPrioritization: 'speed',
flash: flash,
quality: 90,
enableShutterSound: false,
}),
[flash],
)
const isPressingButton = useSharedValue(false)
//#region Camera Capture
const takePhoto = useCallback(async () => {
try {
if (camera.current == null) throw new Error('Camera ref is null!')
console.log('Taking photo...')
const photo = await camera.current.takePhoto(takePhotoOptions)
onMediaCaptured(photo, 'photo')
} catch (e) {
console.error('Failed to take photo!', e)
}
}, [camera, onMediaCaptured, takePhotoOptions])
const onStoppedRecording = useCallback(() => {
isRecording.current = false
cancelAnimation(recordingProgress)
console.log('stopped recording video!')
}, [recordingProgress])
const stopRecording = useCallback(async () => {
try {
if (camera.current == null) throw new Error('Camera ref is null!')
console.log('calling stopRecording()...')
await camera.current.stopRecording()
console.log('called stopRecording()!')
} catch (e) {
console.error('failed to stop recording!', e)
}
}, [camera])
const startRecording = useCallback(() => {
try {
if (camera.current == null) throw new Error('Camera ref is null!')
console.log('calling startRecording()...')
camera.current.startRecording({
flash: flash,
onRecordingError: (error) => {
console.error('Recording failed!', error)
onStoppedRecording()
},
onRecordingFinished: (video) => {
console.log(`Recording successfully finished! ${video.path}`)
onMediaCaptured(video, 'video')
onStoppedRecording()
},
})
// TODO: wait until startRecording returns to actually find out if the recording has successfully started
console.log('called startRecording()!')
isRecording.current = true
} catch (e) {
console.error('failed to start recording!', e, 'camera')
}
}, [camera, flash, onMediaCaptured, onStoppedRecording])
//#endregion
//#region Tap handler
const tapHandler = useRef<TapGestureHandler>()
const onHandlerStateChanged = useCallback(
async ({ nativeEvent: event }: TapGestureHandlerStateChangeEvent) => {
// This is the gesture handler for the circular "shutter" button.
// Once the finger touches the button (State.BEGAN), a photo is being taken and "capture mode" is entered. (disabled tab bar)
// Also, we set `pressDownDate` to the time of the press down event, and start a 200ms timeout. If the `pressDownDate` hasn't changed
// after the 200ms, the user is still holding down the "shutter" button. In that case, we start recording.
//
// Once the finger releases the button (State.END/FAILED/CANCELLED), we leave "capture mode" (enable tab bar) and check the `pressDownDate`,
// if `pressDownDate` was less than 200ms ago, we know that the intention of the user is to take a photo. We check the `takePhotoPromise` if
// there already is an ongoing (or already resolved) takePhoto() call (remember that we called takePhoto() when the user pressed down), and
// if yes, use that. If no, we just try calling takePhoto() again
console.debug(`state: ${Object.keys(State)[event.state]}`)
switch (event.state) {
case State.BEGAN: {
// enter "recording mode"
recordingProgress.value = 0
isPressingButton.value = true
const now = new Date()
pressDownDate.current = now
setTimeout(() => {
if (pressDownDate.current === now) {
// user is still pressing down after 200ms, so his intention is to create a video
startRecording()
}
}, START_RECORDING_DELAY)
setIsPressingButton(true)
return
}
case State.END:
case State.FAILED:
case State.CANCELLED: {
// exit "recording mode"
try {
if (pressDownDate.current == null) throw new Error('PressDownDate ref .current was null!')
const now = new Date()
const diff = now.getTime() - pressDownDate.current.getTime()
pressDownDate.current = undefined
if (diff < START_RECORDING_DELAY) {
// user has released the button within 200ms, so his intention is to take a single picture.
await takePhoto()
} else {
// user has held the button for more than 200ms, so he has been recording this entire time.
await stopRecording()
}
} finally {
setTimeout(() => {
isPressingButton.value = false
setIsPressingButton(false)
}, 500)
}
return
}
default:
break
}
},
[isPressingButton, recordingProgress, setIsPressingButton, startRecording, stopRecording, takePhoto],
)
//#endregion
//#region Pan handler
const panHandler = useRef<PanGestureHandler>()
const onPanGestureEvent = useAnimatedGestureHandler<PanGestureHandlerGestureEvent, { offsetY?: number; startY?: number }>({
onStart: (event, context) => {
context.startY = event.absoluteY
const yForFullZoom = context.startY * 0.7
const offsetYForFullZoom = context.startY - yForFullZoom
// extrapolate [0 ... 1] zoom -> [0 ... Y_FOR_FULL_ZOOM] finger position
context.offsetY = interpolate(cameraZoom.value, [minZoom, maxZoom], [0, offsetYForFullZoom], Extrapolate.CLAMP)
},
onActive: (event, context) => {
const offset = context.offsetY ?? 0
const startY = context.startY ?? SCREEN_HEIGHT
const yForFullZoom = startY * 0.7
cameraZoom.value = interpolate(event.absoluteY - offset, [yForFullZoom, startY], [maxZoom, minZoom], Extrapolate.CLAMP)
},
})
//#endregion
const shadowStyle = useAnimatedStyle(
() => ({
transform: [
{
scale: withSpring(isPressingButton.value ? 1 : 0, {
mass: 1,
damping: 35,
stiffness: 300,
}),
},
],
}),
[isPressingButton],
)
const buttonStyle = useAnimatedStyle(() => {
let scale: number
if (enabled) {
if (isPressingButton.value) {
scale = withRepeat(
withSpring(1, {
stiffness: 100,
damping: 1000,
}),
-1,
true,
)
} else {
scale = withSpring(0.9, {
stiffness: 500,
damping: 300,
})
}
} else {
scale = withSpring(0.6, {
stiffness: 500,
damping: 300,
})
}
return {
opacity: withTiming(enabled ? 1 : 0.3, {
duration: 100,
easing: Easing.linear,
}),
transform: [
{
scale: scale,
},
],
}
}, [enabled, isPressingButton])
return (
<TapGestureHandler
enabled={enabled}
ref={tapHandler}
onHandlerStateChange={onHandlerStateChanged}
shouldCancelWhenOutside={false}
maxDurationMs={99999999} // <-- this prevents the TapGestureHandler from going to State.FAILED when the user moves his finger outside of the child view (to zoom)
simultaneousHandlers={panHandler}>
<Reanimated.View {...props} style={[buttonStyle, style]}>
<PanGestureHandler
enabled={enabled}
ref={panHandler}
failOffsetX={PAN_GESTURE_HANDLER_FAIL_X}
activeOffsetY={PAN_GESTURE_HANDLER_ACTIVE_Y}
onGestureEvent={onPanGestureEvent}
simultaneousHandlers={tapHandler}>
<Reanimated.View style={styles.flex}>
<Reanimated.View style={[styles.shadow, shadowStyle]} />
<View style={styles.button} />
</Reanimated.View>
</PanGestureHandler>
</Reanimated.View>
</TapGestureHandler>
)
}
export const CaptureButton = React.memo(_CaptureButton)
const styles = StyleSheet.create({
flex: {
flex: 1,
},
shadow: {
position: 'absolute',
width: CAPTURE_BUTTON_SIZE,
height: CAPTURE_BUTTON_SIZE,
borderRadius: CAPTURE_BUTTON_SIZE / 2,
backgroundColor: '#e34077',
},
button: {
width: CAPTURE_BUTTON_SIZE,
height: CAPTURE_BUTTON_SIZE,
borderRadius: CAPTURE_BUTTON_SIZE / 2,
borderWidth: BORDER_WIDTH,
borderColor: 'white',
},
})

32
package/example/src/views/StatusBarBlurBackground.tsx
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@ -1,32 +0,0 @@
import { BlurView, BlurViewProps } from '@react-native-community/blur'
import React from 'react'
import { Platform, StyleSheet } from 'react-native'
import StaticSafeAreaInsets from 'react-native-static-safe-area-insets'
const FALLBACK_COLOR = 'rgba(140, 140, 140, 0.3)'
const StatusBarBlurBackgroundImpl = ({ style, ...props }: BlurViewProps): React.ReactElement | null => {
if (Platform.OS !== 'ios') return null
return (
<BlurView
style={[styles.statusBarBackground, style]}
blurAmount={25}
blurType="light"
reducedTransparencyFallbackColor={FALLBACK_COLOR}
{...props}
/>
)
}
export const StatusBarBlurBackground = React.memo(StatusBarBlurBackgroundImpl)
const styles = StyleSheet.create({
statusBarBackground: {
position: 'absolute',
top: 0,
left: 0,
right: 0,
height: StaticSafeAreaInsets.safeAreaInsetsTop,
},
})