148 lines
7.5 KiB
JavaScript
148 lines
7.5 KiB
JavaScript
"use strict";
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (g && (g = 0, op[0] && (_ = 0)), _) try {
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if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.BarcodeDetectorDelegate = void 0;
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var core_1 = require("./core");
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var BarcodeDetectorDelegate = (function () {
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function BarcodeDetectorDelegate(requestedFormats, verbose, logger) {
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this.formatMap = new Map([
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[core_1.Html5QrcodeSupportedFormats.QR_CODE, "qr_code"],
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[core_1.Html5QrcodeSupportedFormats.AZTEC, "aztec"],
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[core_1.Html5QrcodeSupportedFormats.CODABAR, "codabar"],
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[core_1.Html5QrcodeSupportedFormats.CODE_39, "code_39"],
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[core_1.Html5QrcodeSupportedFormats.CODE_93, "code_93"],
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[core_1.Html5QrcodeSupportedFormats.CODE_128, "code_128"],
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[core_1.Html5QrcodeSupportedFormats.DATA_MATRIX, "data_matrix"],
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[core_1.Html5QrcodeSupportedFormats.ITF, "itf"],
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[core_1.Html5QrcodeSupportedFormats.EAN_13, "ean_13"],
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[core_1.Html5QrcodeSupportedFormats.EAN_8, "ean_8"],
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[core_1.Html5QrcodeSupportedFormats.PDF_417, "pdf417"],
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[core_1.Html5QrcodeSupportedFormats.UPC_A, "upc_a"],
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[core_1.Html5QrcodeSupportedFormats.UPC_E, "upc_e"]
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]);
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this.reverseFormatMap = this.createReverseFormatMap();
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if (!BarcodeDetectorDelegate.isSupported()) {
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throw "Use html5qrcode.min.js without edit, Use "
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+ "BarcodeDetectorDelegate only if it isSupported();";
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}
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this.verbose = verbose;
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this.logger = logger;
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var formats = this.createBarcodeDetectorFormats(requestedFormats);
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this.detector = new BarcodeDetector(formats);
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if (!this.detector) {
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throw "BarcodeDetector detector not supported";
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}
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}
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BarcodeDetectorDelegate.isSupported = function () {
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if (!("BarcodeDetector" in window)) {
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return false;
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}
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var dummyDetector = new BarcodeDetector({ formats: ["qr_code"] });
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return typeof dummyDetector !== "undefined";
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};
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BarcodeDetectorDelegate.prototype.decodeAsync = function (canvas) {
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return __awaiter(this, void 0, void 0, function () {
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var barcodes, largestBarcode;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0: return [4, this.detector.detect(canvas)];
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case 1:
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barcodes = _a.sent();
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if (!barcodes || barcodes.length === 0) {
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throw "No barcode or QR code detected.";
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}
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largestBarcode = this.selectLargestBarcode(barcodes);
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return [2, {
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text: largestBarcode.rawValue,
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format: core_1.QrcodeResultFormat.create(this.toHtml5QrcodeSupportedFormats(largestBarcode.format)),
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debugData: this.createDebugData()
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}];
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}
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});
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});
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};
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BarcodeDetectorDelegate.prototype.selectLargestBarcode = function (barcodes) {
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var largestBarcode = null;
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var maxArea = 0;
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for (var _i = 0, barcodes_1 = barcodes; _i < barcodes_1.length; _i++) {
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var barcode = barcodes_1[_i];
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var area = barcode.boundingBox.width * barcode.boundingBox.height;
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if (area > maxArea) {
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maxArea = area;
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largestBarcode = barcode;
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}
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}
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if (!largestBarcode) {
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throw "No largest barcode found";
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}
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return largestBarcode;
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};
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BarcodeDetectorDelegate.prototype.createBarcodeDetectorFormats = function (requestedFormats) {
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var formats = [];
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for (var _i = 0, requestedFormats_1 = requestedFormats; _i < requestedFormats_1.length; _i++) {
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var requestedFormat = requestedFormats_1[_i];
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if (this.formatMap.has(requestedFormat)) {
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formats.push(this.formatMap.get(requestedFormat));
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}
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else {
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this.logger.warn("".concat(requestedFormat, " is not supported by")
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+ "BarcodeDetectorDelegate");
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}
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}
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return { formats: formats };
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};
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BarcodeDetectorDelegate.prototype.toHtml5QrcodeSupportedFormats = function (barcodeDetectorFormat) {
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if (!this.reverseFormatMap.has(barcodeDetectorFormat)) {
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throw "reverseFormatMap doesn't have ".concat(barcodeDetectorFormat);
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}
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return this.reverseFormatMap.get(barcodeDetectorFormat);
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};
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BarcodeDetectorDelegate.prototype.createReverseFormatMap = function () {
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var result = new Map();
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this.formatMap.forEach(function (value, key, _) {
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result.set(value, key);
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});
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return result;
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};
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BarcodeDetectorDelegate.prototype.createDebugData = function () {
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return { decoderName: "BarcodeDetector" };
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};
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return BarcodeDetectorDelegate;
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}());
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exports.BarcodeDetectorDelegate = BarcodeDetectorDelegate;
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//# sourceMappingURL=native-bar-code-detector.js.map
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