6640b72a00
* feat: CodeScanner JS API * feat: iOS * Use guard * Format * feat: Android base * fix: Attach Surfaces * Use isBusy var * fix: Use separate Queue * feat: Finish iOS types * feat: Implement all other code types on Android * fix: Call JS event * fix: Pass codetypes on Android * fix: iOS use Preview coordinate system * docs: Add comments * chore: Format code * Update CameraView+AVCaptureSession.swift * docs: Add Code Scanner docs * docs: Update * feat: Use lazily downloaded model on Android * Revert changes in CameraPage * Format * fix: Fix empty QR codes * Update README.md
24 lines
765 B
TypeScript
24 lines
765 B
TypeScript
import { useCallback, useMemo, useRef } from 'react'
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import { Code, CodeScanner } from '../CodeScanner'
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export function useCodeScanner(codeScanner: CodeScanner): CodeScanner {
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const { onCodeScanned, ...codeScannerOptions } = codeScanner
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// Memoize the function once and use a ref on any identity changes
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const ref = useRef(onCodeScanned)
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ref.current = onCodeScanned
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const callback = useCallback((codes: Code[]) => {
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ref.current(codes)
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}, [])
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// CodeScanner needs to be memoized so it doesn't trigger a Camera Session re-build
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return useMemo(
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() => ({
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...codeScannerOptions,
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onCodeScanned: callback,
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}),
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// eslint-disable-next-line react-hooks/exhaustive-deps
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[JSON.stringify(codeScannerOptions), callback],
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)
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}
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