mirror of
https://github.com/Part-DB/Part-DB-server.git
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101 lines
3.3 KiB
JavaScript
101 lines
3.3 KiB
JavaScript
/*
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* This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
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*
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* Copyright (C) 2019 - 2022 Jan Böhmer (https://github.com/jbtronics)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {Controller} from "@hotwired/stimulus";
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//import * as ZXing from "@zxing/library";
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import {Html5QrcodeScanner, Html5Qrcode} from "@part-db/html5-qrcode";
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/* stimulusFetch: 'lazy' */
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export default class extends Controller {
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_scanner = null;
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_submitting = false;
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connect() {
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// Prevent double init if connect fires twice
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if (this._scanner) return;
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//This function ensures, that the qrbox is 70% of the total viewport
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let qrboxFunction = function(viewfinderWidth, viewfinderHeight) {
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let minEdgePercentage = 0.7; // 70%
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let minEdgeSize = Math.min(viewfinderWidth, viewfinderHeight);
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let qrboxSize = Math.floor(minEdgeSize * minEdgePercentage);
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return {
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width: qrboxSize,
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height: qrboxSize
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};
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}
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//Try to get the number of cameras. If the number is 0, then the promise will fail, and we show the warning dialog
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Html5Qrcode.getCameras().catch(() => {
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document.getElementById("scanner-warning")?.classList.remove("d-none");
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});
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this._scanner = new Html5QrcodeScanner(this.element.id, {
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fps: 10,
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qrbox: qrboxFunction,
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experimentalFeatures: {
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//This option improves reading quality on android chrome
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useBarCodeDetectorIfSupported: true,
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},
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}, false);
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this._scanner.render(this.onScanSuccess.bind(this));
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}
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disconnect() {
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// If we already stopped/cleared before submit, nothing to do.
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const scanner = this._scanner;
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this._scanner = null;
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this._submitting = false;
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if (!scanner) return;
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try {
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const p = scanner.clear?.();
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if (p && typeof p.then === "function") p.catch(() => {});
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} catch (_) {
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// ignore
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}
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}
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async onScanSuccess(decodedText) {
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if (this._submitting) return;
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this._submitting = true;
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//Put our decoded Text into the input box
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const input = document.getElementById("scan_dialog_input");
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if (input) input.value = decodedText;
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// Stop scanner BEFORE submitting to avoid camera transition races
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try {
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if (this._scanner?.clear) {
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await this._scanner.clear();
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}
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} catch (_) {
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// ignore
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} finally {
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this._scanner = null;
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}
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//Submit form
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document.getElementById("scan_dialog_form")?.requestSubmit();
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}
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}
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