51 lines
1.7 KiB
TypeScript
51 lines
1.7 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import * as React from "react";
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import {toDataURL, QRCodeSegment, QRCodeToDataURLOptions} from "qrcode";
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import classNames from "classnames";
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import {_t} from "../../../languageHandler";
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import Spinner from "./Spinner";
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interface IProps extends QRCodeToDataURLOptions {
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data: string | QRCodeSegment[];
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className?: string;
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}
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const defaultOptions: QRCodeToDataURLOptions = {
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errorCorrectionLevel: 'L', // we want it as trivial-looking as possible
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};
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const QRCode: React.FC<IProps> = ({data, className, ...options}) => {
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const [dataUri, setUri] = React.useState<string>(null);
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React.useEffect(() => {
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let cancelled = false;
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toDataURL(data, {...defaultOptions, ...options}).then(uri => {
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if (cancelled) return;
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setUri(uri);
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});
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return () => {
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cancelled = true;
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};
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}, [JSON.stringify(data), options]); // eslint-disable-line react-hooks/exhaustive-deps
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return <div className={classNames("mx_QRCode", className)}>
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{ dataUri ? <img src={dataUri} className="mx_VerificationQRCode" alt={_t("QR Code")} /> : <Spinner /> }
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</div>;
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};
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export default QRCode;
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