Merge pull request #2602 from Johennes/johannes/qr

Display QR code when sharing invite link

src/QrCode.module.css

@@ -0,0 +1,21 @@
+/*
+Copyright 2024 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.qrCode img {
+  max-width: 100%;
+  image-rendering: pixelated;
+  border-radius: var(--cpd-space-4x);
+}

src/QrCode.test.tsx

@@ -0,0 +1,34 @@
+/*
+Copyright 2024 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, test } from "vitest";
+import { render, configure } from "@testing-library/react";
+
+import { QrCode } from "./QrCode";
+
+configure({
+  defaultHidden: true,
+});
+
+describe("QrCode", () => {
+  test("renders", async () => {
+    const { container, findByRole } = render(
+      <QrCode data="foo" className="bar" />,
+    );
+    (await findByRole("img")) as HTMLImageElement;
+    expect(container.firstChild).toMatchSnapshot();
+  });
+});

src/QrCode.tsx

@@ -0,0 +1,57 @@
+/*
+Copyright 2024 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { FC, useEffect, useState } from "react";
+import { toDataURL } from "qrcode";
+import classNames from "classnames";
+import { t } from "i18next";
+
+import styles from "./QrCode.module.css";
+
+interface Props {
+  data: string;
+  className?: string;
+}
+
+export const QrCode: FC<Props> = ({ data, className }) => {
+  const [url, setUrl] = useState<string | null>(null);
+
+  useEffect(() => {
+    let isCancelled = false;
+
+    toDataURL(data, { errorCorrectionLevel: "L" })
+      .then((url) => {
+        if (!isCancelled) {
+          setUrl(url);
+        }
+      })
+      .catch((reason) => {
+        if (!isCancelled) {
+          setUrl(null);
+        }
+      });
+
+    return (): void => {
+      isCancelled = true;
+    };
+  }, [data]);
+
+  return (
+    <div className={classNames(styles.qrCode, className)}>
+      {url && <img src={url} alt={t("qr_code")} />}
+    </div>
+  );
+};

src/__snapshots__/QrCode.test.tsx.snap

@@ -0,0 +1,12 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`QrCode > renders 1`] = `
+<div
+  class="qrCode bar"
+>
+  <img
+    alt="qr_code"
+    src="data:image/png;base64,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"
+  />
+</div>
+`;

src/room/InviteModal.module.css

@@ -24,3 +24,12 @@ limitations under the License.
 .button {
   width: 100%;
 }
+
+.qrCode {
+  display: flex;
+  justify-content: center;
+}
+
+.qrCode img {
+  margin-block-end: var(--cpd-space-8x);
+}

src/room/InviteModal.tsx

@@ -29,6 +29,7 @@ import { getAbsoluteRoomUrl } from "../utils/matrix";
 import styles from "./InviteModal.module.css";
 import { Toast } from "../Toast";
 import { useRoomEncryptionSystem } from "../e2ee/sharedKeyManagement";
+import { QrCode } from "../QrCode";
 
 interface Props {
   room: Room;
@@ -61,6 +62,7 @@ export const InviteModal: FC<Props> = ({ room, open, onDismiss }) => {
   return (
     <>
       <Modal title={t("invite_modal.title")} open={open} onDismiss={onDismiss}>
+        <QrCode className={styles.qrCode} data={url} />
         <Text className={styles.url} size="sm" weight="semibold">
           {url}
         </Text>