"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Html5Qrcode = void 0;
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var core_1 = require("./core");
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var strings_1 = require("./strings");
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var utils_1 = require("./utils");
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var code_decoder_1 = require("./code-decoder");
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var factories_1 = require("./camera/factories");
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var retriever_1 = require("./camera/retriever");
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var state_manager_1 = require("./state-manager");
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var Constants = (function (_super) {
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__extends(Constants, _super);
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function Constants() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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Constants.DEFAULT_WIDTH = 300;
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Constants.DEFAULT_WIDTH_OFFSET = 2;
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Constants.FILE_SCAN_MIN_HEIGHT = 300;
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Constants.FILE_SCAN_HIDDEN_CANVAS_PADDING = 100;
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Constants.MIN_QR_BOX_SIZE = 50;
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Constants.SHADED_LEFT = 1;
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Constants.SHADED_RIGHT = 2;
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Constants.SHADED_TOP = 3;
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Constants.SHADED_BOTTOM = 4;
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Constants.SHADED_REGION_ELEMENT_ID = "qr-shaded-region";
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Constants.VERBOSE = false;
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Constants.BORDER_SHADER_DEFAULT_COLOR = "#ffffff";
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Constants.BORDER_SHADER_MATCH_COLOR = "rgb(90, 193, 56)";
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return Constants;
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}(core_1.Html5QrcodeConstants));
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var InternalHtml5QrcodeConfig = (function () {
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function InternalHtml5QrcodeConfig(config, logger) {
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this.logger = logger;
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this.fps = Constants.SCAN_DEFAULT_FPS;
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if (!config) {
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this.disableFlip = Constants.DEFAULT_DISABLE_FLIP;
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}
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else {
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if (config.fps) {
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this.fps = config.fps;
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}
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this.disableFlip = config.disableFlip === true;
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this.qrbox = config.qrbox;
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this.aspectRatio = config.aspectRatio;
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this.videoConstraints = config.videoConstraints;
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}
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}
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InternalHtml5QrcodeConfig.prototype.isMediaStreamConstraintsValid = function () {
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if (!this.videoConstraints) {
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this.logger.logError("Empty videoConstraints", true);
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return false;
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}
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return utils_1.VideoConstraintsUtil.isMediaStreamConstraintsValid(this.videoConstraints, this.logger);
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};
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InternalHtml5QrcodeConfig.prototype.isShadedBoxEnabled = function () {
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return !(0, core_1.isNullOrUndefined)(this.qrbox);
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};
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InternalHtml5QrcodeConfig.create = function (config, logger) {
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return new InternalHtml5QrcodeConfig(config, logger);
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};
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return InternalHtml5QrcodeConfig;
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}());
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var Html5Qrcode = (function () {
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function Html5Qrcode(elementId, configOrVerbosityFlag) {
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this.element = null;
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this.canvasElement = null;
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this.scannerPausedUiElement = null;
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this.hasBorderShaders = null;
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this.borderShaders = null;
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this.qrMatch = null;
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this.renderedCamera = null;
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this.qrRegion = null;
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this.context = null;
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this.lastScanImageFile = null;
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this.isScanning = false;
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if (!document.getElementById(elementId)) {
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throw "HTML Element with id=".concat(elementId, " not found");
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}
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this.elementId = elementId;
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this.verbose = false;
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var experimentalFeatureConfig;
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var configObject;
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if (typeof configOrVerbosityFlag == "boolean") {
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this.verbose = configOrVerbosityFlag === true;
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}
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else if (configOrVerbosityFlag) {
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configObject = configOrVerbosityFlag;
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this.verbose = configObject.verbose === true;
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experimentalFeatureConfig = configObject.experimentalFeatures;
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}
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this.logger = new core_1.BaseLoggger(this.verbose);
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this.qrcode = new code_decoder_1.Html5QrcodeShim(this.getSupportedFormats(configOrVerbosityFlag), this.getUseBarCodeDetectorIfSupported(configObject), this.verbose, this.logger);
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this.foreverScanTimeout;
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this.shouldScan = true;
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this.stateManagerProxy = state_manager_1.StateManagerFactory.create();
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}
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Html5Qrcode.prototype.start = function (cameraIdOrConfig, configuration, qrCodeSuccessCallback, qrCodeErrorCallback) {
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var _this = this;
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if (!cameraIdOrConfig) {
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throw "cameraIdOrConfig is required";
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}
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if (!qrCodeSuccessCallback
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|| typeof qrCodeSuccessCallback != "function") {
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throw "qrCodeSuccessCallback is required and should be a function.";
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}
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var qrCodeErrorCallbackInternal;
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if (qrCodeErrorCallback) {
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qrCodeErrorCallbackInternal = qrCodeErrorCallback;
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}
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else {
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qrCodeErrorCallbackInternal
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= this.verbose ? this.logger.log : function () { };
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}
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var internalConfig = InternalHtml5QrcodeConfig.create(configuration, this.logger);
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this.clearElement();
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var videoConstraintsAvailableAndValid = false;
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if (internalConfig.videoConstraints) {
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if (!internalConfig.isMediaStreamConstraintsValid()) {
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this.logger.logError("'videoConstraints' is not valid 'MediaStreamConstraints, "
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+ "it will be ignored.'", true);
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}
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else {
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videoConstraintsAvailableAndValid = true;
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}
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}
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var areVideoConstraintsEnabled = videoConstraintsAvailableAndValid;
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var element = document.getElementById(this.elementId);
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var rootElementWidth = element.clientWidth
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? element.clientWidth : Constants.DEFAULT_WIDTH;
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element.style.position = "relative";
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this.shouldScan = true;
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this.element = element;
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var $this = this;
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var toScanningStateChangeTransaction = this.stateManagerProxy.startTransition(state_manager_1.Html5QrcodeScannerState.SCANNING);
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return new Promise(function (resolve, reject) {
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var videoConstraints = areVideoConstraintsEnabled
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? internalConfig.videoConstraints
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: $this.createVideoConstraints(cameraIdOrConfig);
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if (!videoConstraints) {
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toScanningStateChangeTransaction.cancel();
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reject("videoConstraints should be defined");
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return;
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}
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var cameraRenderingOptions = {};
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if (!areVideoConstraintsEnabled || internalConfig.aspectRatio) {
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cameraRenderingOptions.aspectRatio = internalConfig.aspectRatio;
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}
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var renderingCallbacks = {
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onRenderSurfaceReady: function (viewfinderWidth, viewfinderHeight) {
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$this.setupUi(viewfinderWidth, viewfinderHeight, internalConfig);
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$this.isScanning = true;
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$this.foreverScan(internalConfig, qrCodeSuccessCallback, qrCodeErrorCallbackInternal);
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}
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};
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factories_1.CameraFactory.failIfNotSupported().then(function (factory) {
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factory.create(videoConstraints).then(function (camera) {
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return camera.render(_this.element, cameraRenderingOptions, renderingCallbacks)
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.then(function (renderedCamera) {
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$this.renderedCamera = renderedCamera;
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toScanningStateChangeTransaction.execute();
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resolve(null);
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})
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.catch(function (error) {
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toScanningStateChangeTransaction.cancel();
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reject(error);
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});
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}).catch(function (error) {
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toScanningStateChangeTransaction.cancel();
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reject(strings_1.Html5QrcodeStrings.errorGettingUserMedia(error));
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});
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}).catch(function (_) {
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toScanningStateChangeTransaction.cancel();
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reject(strings_1.Html5QrcodeStrings.cameraStreamingNotSupported());
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});
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});
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};
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Html5Qrcode.prototype.pause = function (shouldPauseVideo) {
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if (!this.stateManagerProxy.isStrictlyScanning()) {
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throw "Cannot pause, scanner is not scanning.";
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}
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this.stateManagerProxy.directTransition(state_manager_1.Html5QrcodeScannerState.PAUSED);
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this.showPausedState();
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if ((0, core_1.isNullOrUndefined)(shouldPauseVideo) || shouldPauseVideo !== true) {
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shouldPauseVideo = false;
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}
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if (shouldPauseVideo && this.renderedCamera) {
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this.renderedCamera.pause();
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}
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};
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Html5Qrcode.prototype.resume = function () {
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if (!this.stateManagerProxy.isPaused()) {
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throw "Cannot result, scanner is not paused.";
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}
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if (!this.renderedCamera) {
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throw "renderedCamera doesn't exist while trying resume()";
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}
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var $this = this;
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var transitionToScanning = function () {
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$this.stateManagerProxy.directTransition(state_manager_1.Html5QrcodeScannerState.SCANNING);
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$this.hidePausedState();
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};
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if (!this.renderedCamera.isPaused()) {
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transitionToScanning();
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return;
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}
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this.renderedCamera.resume(function () {
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transitionToScanning();
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});
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};
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Html5Qrcode.prototype.getState = function () {
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return this.stateManagerProxy.getState();
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};
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Html5Qrcode.prototype.stop = function () {
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var _this = this;
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if (!this.stateManagerProxy.isScanning()) {
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throw "Cannot stop, scanner is not running or paused.";
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}
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var toStoppedStateTransaction = this.stateManagerProxy.startTransition(state_manager_1.Html5QrcodeScannerState.NOT_STARTED);
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this.shouldScan = false;
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if (this.foreverScanTimeout) {
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clearTimeout(this.foreverScanTimeout);
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}
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var removeQrRegion = function () {
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if (!_this.element) {
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return;
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}
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var childElement = document.getElementById(Constants.SHADED_REGION_ELEMENT_ID);
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if (childElement) {
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_this.element.removeChild(childElement);
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}
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};
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var $this = this;
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return this.renderedCamera.close().then(function () {
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$this.renderedCamera = null;
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if ($this.element) {
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$this.element.removeChild($this.canvasElement);
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$this.canvasElement = null;
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}
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removeQrRegion();
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if ($this.qrRegion) {
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$this.qrRegion = null;
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}
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if ($this.context) {
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$this.context = null;
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}
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toStoppedStateTransaction.execute();
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$this.hidePausedState();
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$this.isScanning = false;
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return Promise.resolve();
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});
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};
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Html5Qrcode.prototype.scanFile = function (imageFile, showImage) {
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return this.scanFileV2(imageFile, showImage)
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.then(function (html5qrcodeResult) { return html5qrcodeResult.decodedText; });
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};
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Html5Qrcode.prototype.scanFileV2 = function (imageFile, showImage) {
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var _this = this;
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if (!imageFile || !(imageFile instanceof File)) {
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throw "imageFile argument is mandatory and should be instance "
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+ "of File. Use 'event.target.files[0]'.";
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}
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if ((0, core_1.isNullOrUndefined)(showImage)) {
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showImage = true;
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}
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if (!this.stateManagerProxy.canScanFile()) {
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throw "Cannot start file scan - ongoing camera scan";
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}
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return new Promise(function (resolve, reject) {
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_this.possiblyCloseLastScanImageFile();
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_this.clearElement();
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_this.lastScanImageFile = URL.createObjectURL(imageFile);
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var inputImage = new Image;
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inputImage.onload = function () {
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var imageWidth = inputImage.width;
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var imageHeight = inputImage.height;
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var element = document.getElementById(_this.elementId);
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var containerWidth = element.clientWidth
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? element.clientWidth : Constants.DEFAULT_WIDTH;
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var containerHeight = Math.max(element.clientHeight ? element.clientHeight : imageHeight, Constants.FILE_SCAN_MIN_HEIGHT);
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var config = _this.computeCanvasDrawConfig(imageWidth, imageHeight, containerWidth, containerHeight);
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if (showImage) {
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var visibleCanvas = _this.createCanvasElement(containerWidth, containerHeight, "qr-canvas-visible");
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visibleCanvas.style.display = "inline-block";
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element.appendChild(visibleCanvas);
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var context_1 = visibleCanvas.getContext("2d");
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if (!context_1) {
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throw "Unable to get 2d context from canvas";
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}
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context_1.canvas.width = containerWidth;
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context_1.canvas.height = containerHeight;
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context_1.drawImage(inputImage, 0, 0, imageWidth, imageHeight, config.x, config.y, config.width, config.height);
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}
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var padding = Constants.FILE_SCAN_HIDDEN_CANVAS_PADDING;
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var hiddenImageWidth = Math.max(inputImage.width, config.width);
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var hiddenImageHeight = Math.max(inputImage.height, config.height);
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var hiddenCanvasWidth = hiddenImageWidth + 2 * padding;
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var hiddenCanvasHeight = hiddenImageHeight + 2 * padding;
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var hiddenCanvas = _this.createCanvasElement(hiddenCanvasWidth, hiddenCanvasHeight);
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element.appendChild(hiddenCanvas);
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var context = hiddenCanvas.getContext("2d");
|
if (!context) {
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throw "Unable to get 2d context from canvas";
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}
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context.canvas.width = hiddenCanvasWidth;
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context.canvas.height = hiddenCanvasHeight;
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context.drawImage(inputImage, 0, 0, imageWidth, imageHeight, padding, padding, hiddenImageWidth, hiddenImageHeight);
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try {
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_this.qrcode.decodeRobustlyAsync(hiddenCanvas)
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.then(function (result) {
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resolve(core_1.Html5QrcodeResultFactory.createFromQrcodeResult(result));
|
})
|
.catch(reject);
|
}
|
catch (exception) {
|
reject("QR code parse error, error = ".concat(exception));
|
}
|
};
|
inputImage.onerror = reject;
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inputImage.onabort = reject;
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inputImage.onstalled = reject;
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inputImage.onsuspend = reject;
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inputImage.src = URL.createObjectURL(imageFile);
|
});
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};
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Html5Qrcode.prototype.clear = function () {
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this.clearElement();
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};
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Html5Qrcode.getCameras = function () {
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return retriever_1.CameraRetriever.retrieve();
|
};
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Html5Qrcode.prototype.getRunningTrackCapabilities = function () {
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return this.getRenderedCameraOrFail().getRunningTrackCapabilities();
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};
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Html5Qrcode.prototype.getRunningTrackSettings = function () {
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return this.getRenderedCameraOrFail().getRunningTrackSettings();
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};
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Html5Qrcode.prototype.getRunningTrackCameraCapabilities = function () {
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return this.getRenderedCameraOrFail().getCapabilities();
|
};
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Html5Qrcode.prototype.applyVideoConstraints = function (videoConstaints) {
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if (!videoConstaints) {
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throw "videoConstaints is required argument.";
|
}
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else if (!utils_1.VideoConstraintsUtil.isMediaStreamConstraintsValid(videoConstaints, this.logger)) {
|
throw "invalid videoConstaints passed, check logs for more details";
|
}
|
return this.getRenderedCameraOrFail().applyVideoConstraints(videoConstaints);
|
};
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Html5Qrcode.prototype.getRenderedCameraOrFail = function () {
|
if (this.renderedCamera == null) {
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throw "Scanning is not in running state, call this API only when"
|
+ " QR code scanning using camera is in running state.";
|
}
|
return this.renderedCamera;
|
};
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Html5Qrcode.prototype.getSupportedFormats = function (configOrVerbosityFlag) {
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var allFormats = [
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core_1.Html5QrcodeSupportedFormats.QR_CODE,
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core_1.Html5QrcodeSupportedFormats.AZTEC,
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core_1.Html5QrcodeSupportedFormats.CODABAR,
|
core_1.Html5QrcodeSupportedFormats.CODE_39,
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core_1.Html5QrcodeSupportedFormats.CODE_93,
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core_1.Html5QrcodeSupportedFormats.CODE_128,
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core_1.Html5QrcodeSupportedFormats.DATA_MATRIX,
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core_1.Html5QrcodeSupportedFormats.MAXICODE,
|
core_1.Html5QrcodeSupportedFormats.ITF,
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core_1.Html5QrcodeSupportedFormats.EAN_13,
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core_1.Html5QrcodeSupportedFormats.EAN_8,
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core_1.Html5QrcodeSupportedFormats.PDF_417,
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core_1.Html5QrcodeSupportedFormats.RSS_14,
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core_1.Html5QrcodeSupportedFormats.RSS_EXPANDED,
|
core_1.Html5QrcodeSupportedFormats.UPC_A,
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core_1.Html5QrcodeSupportedFormats.UPC_E,
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core_1.Html5QrcodeSupportedFormats.UPC_EAN_EXTENSION,
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];
|
if (!configOrVerbosityFlag
|
|| typeof configOrVerbosityFlag == "boolean") {
|
return allFormats;
|
}
|
if (!configOrVerbosityFlag.formatsToSupport) {
|
return allFormats;
|
}
|
if (!Array.isArray(configOrVerbosityFlag.formatsToSupport)) {
|
throw "configOrVerbosityFlag.formatsToSupport should be undefined "
|
+ "or an array.";
|
}
|
if (configOrVerbosityFlag.formatsToSupport.length === 0) {
|
throw "Atleast 1 formatsToSupport is needed.";
|
}
|
var supportedFormats = [];
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for (var _i = 0, _a = configOrVerbosityFlag.formatsToSupport; _i < _a.length; _i++) {
|
var format = _a[_i];
|
if ((0, core_1.isValidHtml5QrcodeSupportedFormats)(format)) {
|
supportedFormats.push(format);
|
}
|
else {
|
this.logger.warn("Invalid format: ".concat(format, " passed in config, ignoring."));
|
}
|
}
|
if (supportedFormats.length === 0) {
|
throw "None of formatsToSupport match supported values.";
|
}
|
return supportedFormats;
|
};
|
Html5Qrcode.prototype.getUseBarCodeDetectorIfSupported = function (config) {
|
if ((0, core_1.isNullOrUndefined)(config)) {
|
return true;
|
}
|
if (!(0, core_1.isNullOrUndefined)(config.useBarCodeDetectorIfSupported)) {
|
return config.useBarCodeDetectorIfSupported !== false;
|
}
|
if ((0, core_1.isNullOrUndefined)(config.experimentalFeatures)) {
|
return true;
|
}
|
var experimentalFeatures = config.experimentalFeatures;
|
if ((0, core_1.isNullOrUndefined)(experimentalFeatures.useBarCodeDetectorIfSupported)) {
|
return true;
|
}
|
return experimentalFeatures.useBarCodeDetectorIfSupported !== false;
|
};
|
Html5Qrcode.prototype.validateQrboxSize = function (viewfinderWidth, viewfinderHeight, internalConfig) {
|
var _this = this;
|
var qrboxSize = internalConfig.qrbox;
|
this.validateQrboxConfig(qrboxSize);
|
var qrDimensions = this.toQrdimensions(viewfinderWidth, viewfinderHeight, qrboxSize);
|
var validateMinSize = function (size) {
|
if (size < Constants.MIN_QR_BOX_SIZE) {
|
throw "minimum size of 'config.qrbox' dimension value is"
|
+ " ".concat(Constants.MIN_QR_BOX_SIZE, "px.");
|
}
|
};
|
var correctWidthBasedOnRootElementSize = function (configWidth) {
|
if (configWidth > viewfinderWidth) {
|
_this.logger.warn("`qrbox.width` or `qrbox` is larger than the"
|
+ " width of the root element. The width will be truncated"
|
+ " to the width of root element.");
|
configWidth = viewfinderWidth;
|
}
|
return configWidth;
|
};
|
validateMinSize(qrDimensions.width);
|
validateMinSize(qrDimensions.height);
|
qrDimensions.width = correctWidthBasedOnRootElementSize(qrDimensions.width);
|
};
|
Html5Qrcode.prototype.validateQrboxConfig = function (qrboxSize) {
|
if (typeof qrboxSize === "number") {
|
return;
|
}
|
if (typeof qrboxSize === "function") {
|
return;
|
}
|
if (qrboxSize.width === undefined || qrboxSize.height === undefined) {
|
throw "Invalid instance of QrDimensions passed for "
|
+ "'config.qrbox'. Both 'width' and 'height' should be set.";
|
}
|
};
|
Html5Qrcode.prototype.toQrdimensions = function (viewfinderWidth, viewfinderHeight, qrboxSize) {
|
if (typeof qrboxSize === "number") {
|
return { width: qrboxSize, height: qrboxSize };
|
}
|
else if (typeof qrboxSize === "function") {
|
try {
|
return qrboxSize(viewfinderWidth, viewfinderHeight);
|
}
|
catch (error) {
|
throw new Error("qrbox config was passed as a function but it failed with "
|
+ "unknown error" + error);
|
}
|
}
|
return qrboxSize;
|
};
|
Html5Qrcode.prototype.setupUi = function (viewfinderWidth, viewfinderHeight, internalConfig) {
|
if (internalConfig.isShadedBoxEnabled()) {
|
this.validateQrboxSize(viewfinderWidth, viewfinderHeight, internalConfig);
|
}
|
var qrboxSize = (0, core_1.isNullOrUndefined)(internalConfig.qrbox) ?
|
{ width: viewfinderWidth, height: viewfinderHeight } : internalConfig.qrbox;
|
this.validateQrboxConfig(qrboxSize);
|
var qrDimensions = this.toQrdimensions(viewfinderWidth, viewfinderHeight, qrboxSize);
|
if (qrDimensions.height > viewfinderHeight) {
|
this.logger.warn("[Html5Qrcode] config.qrbox has height that is"
|
+ "greater than the height of the video stream. Shading will be"
|
+ " ignored");
|
}
|
var shouldShadingBeApplied = internalConfig.isShadedBoxEnabled()
|
&& qrDimensions.height <= viewfinderHeight;
|
var defaultQrRegion = {
|
x: 0,
|
y: 0,
|
width: viewfinderWidth,
|
height: viewfinderHeight
|
};
|
var qrRegion = shouldShadingBeApplied
|
? this.getShadedRegionBounds(viewfinderWidth, viewfinderHeight, qrDimensions)
|
: defaultQrRegion;
|
var canvasElement = this.createCanvasElement(qrRegion.width, qrRegion.height);
|
var contextAttributes = { willReadFrequently: true };
|
var context = canvasElement.getContext("2d", contextAttributes);
|
context.canvas.width = qrRegion.width;
|
context.canvas.height = qrRegion.height;
|
this.element.append(canvasElement);
|
if (shouldShadingBeApplied) {
|
this.possiblyInsertShadingElement(this.element, viewfinderWidth, viewfinderHeight, qrDimensions);
|
}
|
this.createScannerPausedUiElement(this.element);
|
this.qrRegion = qrRegion;
|
this.context = context;
|
this.canvasElement = canvasElement;
|
};
|
Html5Qrcode.prototype.createScannerPausedUiElement = function (rootElement) {
|
var scannerPausedUiElement = document.createElement("div");
|
scannerPausedUiElement.innerText = strings_1.Html5QrcodeStrings.scannerPaused();
|
scannerPausedUiElement.style.display = "none";
|
scannerPausedUiElement.style.position = "absolute";
|
scannerPausedUiElement.style.top = "0px";
|
scannerPausedUiElement.style.zIndex = "1";
|
scannerPausedUiElement.style.background = "rgba(9, 9, 9, 0.46)";
|
scannerPausedUiElement.style.color = "#FFECEC";
|
scannerPausedUiElement.style.textAlign = "center";
|
scannerPausedUiElement.style.width = "100%";
|
rootElement.appendChild(scannerPausedUiElement);
|
this.scannerPausedUiElement = scannerPausedUiElement;
|
};
|
Html5Qrcode.prototype.scanContext = function (qrCodeSuccessCallback, qrCodeErrorCallback) {
|
var _this = this;
|
if (this.stateManagerProxy.isPaused()) {
|
return Promise.resolve(false);
|
}
|
return this.qrcode.decodeAsync(this.canvasElement)
|
.then(function (result) {
|
qrCodeSuccessCallback(result.text, core_1.Html5QrcodeResultFactory.createFromQrcodeResult(result));
|
_this.possiblyUpdateShaders(true);
|
return true;
|
}).catch(function (error) {
|
_this.possiblyUpdateShaders(false);
|
var errorMessage = strings_1.Html5QrcodeStrings.codeParseError(error);
|
qrCodeErrorCallback(errorMessage, core_1.Html5QrcodeErrorFactory.createFrom(errorMessage));
|
return false;
|
});
|
};
|
Html5Qrcode.prototype.foreverScan = function (internalConfig, qrCodeSuccessCallback, qrCodeErrorCallback) {
|
var _this = this;
|
if (!this.shouldScan) {
|
return;
|
}
|
if (!this.renderedCamera) {
|
return;
|
}
|
var videoElement = this.renderedCamera.getSurface();
|
var widthRatio = videoElement.videoWidth / videoElement.clientWidth;
|
var heightRatio = videoElement.videoHeight / videoElement.clientHeight;
|
if (!this.qrRegion) {
|
throw "qrRegion undefined when localMediaStream is ready.";
|
}
|
var sWidthOffset = this.qrRegion.width * widthRatio;
|
var sHeightOffset = this.qrRegion.height * heightRatio;
|
var sxOffset = this.qrRegion.x * widthRatio;
|
var syOffset = this.qrRegion.y * heightRatio;
|
this.context.drawImage(videoElement, sxOffset, syOffset, sWidthOffset, sHeightOffset, 0, 0, this.qrRegion.width, this.qrRegion.height);
|
var triggerNextScan = function () {
|
_this.foreverScanTimeout = setTimeout(function () {
|
_this.foreverScan(internalConfig, qrCodeSuccessCallback, qrCodeErrorCallback);
|
}, _this.getTimeoutFps(internalConfig.fps));
|
};
|
this.scanContext(qrCodeSuccessCallback, qrCodeErrorCallback)
|
.then(function (isSuccessfull) {
|
if (!isSuccessfull && internalConfig.disableFlip !== true) {
|
_this.context.translate(_this.context.canvas.width, 0);
|
_this.context.scale(-1, 1);
|
_this.scanContext(qrCodeSuccessCallback, qrCodeErrorCallback)
|
.finally(function () {
|
triggerNextScan();
|
});
|
}
|
else {
|
triggerNextScan();
|
}
|
}).catch(function (error) {
|
_this.logger.logError("Error happend while scanning context", error);
|
triggerNextScan();
|
});
|
};
|
Html5Qrcode.prototype.createVideoConstraints = function (cameraIdOrConfig) {
|
if (typeof cameraIdOrConfig == "string") {
|
return { deviceId: { exact: cameraIdOrConfig } };
|
}
|
else if (typeof cameraIdOrConfig == "object") {
|
var facingModeKey = "facingMode";
|
var deviceIdKey = "deviceId";
|
var allowedFacingModeValues_1 = { "user": true, "environment": true };
|
var exactKey = "exact";
|
var isValidFacingModeValue = function (value) {
|
if (value in allowedFacingModeValues_1) {
|
return true;
|
}
|
else {
|
throw "config has invalid 'facingMode' value = "
|
+ "'".concat(value, "'");
|
}
|
};
|
var keys = Object.keys(cameraIdOrConfig);
|
if (keys.length !== 1) {
|
throw "'cameraIdOrConfig' object should have exactly 1 key,"
|
+ " if passed as an object, found ".concat(keys.length, " keys");
|
}
|
var key = Object.keys(cameraIdOrConfig)[0];
|
if (key !== facingModeKey && key !== deviceIdKey) {
|
throw "Only '".concat(facingModeKey, "' and '").concat(deviceIdKey, "' ")
|
+ " are supported for 'cameraIdOrConfig'";
|
}
|
if (key === facingModeKey) {
|
var facingMode = cameraIdOrConfig.facingMode;
|
if (typeof facingMode == "string") {
|
if (isValidFacingModeValue(facingMode)) {
|
return { facingMode: facingMode };
|
}
|
}
|
else if (typeof facingMode == "object") {
|
if (exactKey in facingMode) {
|
if (isValidFacingModeValue(facingMode["".concat(exactKey)])) {
|
return {
|
facingMode: {
|
exact: facingMode["".concat(exactKey)]
|
}
|
};
|
}
|
}
|
else {
|
throw "'facingMode' should be string or object with"
|
+ " ".concat(exactKey, " as key.");
|
}
|
}
|
else {
|
var type_1 = (typeof facingMode);
|
throw "Invalid type of 'facingMode' = ".concat(type_1);
|
}
|
}
|
else {
|
var deviceId = cameraIdOrConfig.deviceId;
|
if (typeof deviceId == "string") {
|
return { deviceId: deviceId };
|
}
|
else if (typeof deviceId == "object") {
|
if (exactKey in deviceId) {
|
return {
|
deviceId: { exact: deviceId["".concat(exactKey)] }
|
};
|
}
|
else {
|
throw "'deviceId' should be string or object with"
|
+ " ".concat(exactKey, " as key.");
|
}
|
}
|
else {
|
var type_2 = (typeof deviceId);
|
throw "Invalid type of 'deviceId' = ".concat(type_2);
|
}
|
}
|
}
|
var type = (typeof cameraIdOrConfig);
|
throw "Invalid type of 'cameraIdOrConfig' = ".concat(type);
|
};
|
Html5Qrcode.prototype.computeCanvasDrawConfig = function (imageWidth, imageHeight, containerWidth, containerHeight) {
|
if (imageWidth <= containerWidth
|
&& imageHeight <= containerHeight) {
|
var xoffset = (containerWidth - imageWidth) / 2;
|
var yoffset = (containerHeight - imageHeight) / 2;
|
return {
|
x: xoffset,
|
y: yoffset,
|
width: imageWidth,
|
height: imageHeight
|
};
|
}
|
else {
|
var formerImageWidth = imageWidth;
|
var formerImageHeight = imageHeight;
|
if (imageWidth > containerWidth) {
|
imageHeight = (containerWidth / imageWidth) * imageHeight;
|
imageWidth = containerWidth;
|
}
|
if (imageHeight > containerHeight) {
|
imageWidth = (containerHeight / imageHeight) * imageWidth;
|
imageHeight = containerHeight;
|
}
|
this.logger.log("Image downsampled from "
|
+ "".concat(formerImageWidth, "X").concat(formerImageHeight)
|
+ " to ".concat(imageWidth, "X").concat(imageHeight, "."));
|
return this.computeCanvasDrawConfig(imageWidth, imageHeight, containerWidth, containerHeight);
|
}
|
};
|
Html5Qrcode.prototype.clearElement = function () {
|
if (this.stateManagerProxy.isScanning()) {
|
throw "Cannot clear while scan is ongoing, close it first.";
|
}
|
var element = document.getElementById(this.elementId);
|
if (element) {
|
element.innerHTML = "";
|
}
|
};
|
Html5Qrcode.prototype.possiblyUpdateShaders = function (qrMatch) {
|
if (this.qrMatch === qrMatch) {
|
return;
|
}
|
if (this.hasBorderShaders
|
&& this.borderShaders
|
&& this.borderShaders.length) {
|
this.borderShaders.forEach(function (shader) {
|
shader.style.backgroundColor = qrMatch
|
? Constants.BORDER_SHADER_MATCH_COLOR
|
: Constants.BORDER_SHADER_DEFAULT_COLOR;
|
});
|
}
|
this.qrMatch = qrMatch;
|
};
|
Html5Qrcode.prototype.possiblyCloseLastScanImageFile = function () {
|
if (this.lastScanImageFile) {
|
URL.revokeObjectURL(this.lastScanImageFile);
|
this.lastScanImageFile = null;
|
}
|
};
|
Html5Qrcode.prototype.createCanvasElement = function (width, height, customId) {
|
var canvasWidth = width;
|
var canvasHeight = height;
|
var canvasElement = document.createElement("canvas");
|
canvasElement.style.width = "".concat(canvasWidth, "px");
|
canvasElement.style.height = "".concat(canvasHeight, "px");
|
canvasElement.style.display = "none";
|
canvasElement.id = (0, core_1.isNullOrUndefined)(customId)
|
? "qr-canvas" : customId;
|
return canvasElement;
|
};
|
Html5Qrcode.prototype.getShadedRegionBounds = function (width, height, qrboxSize) {
|
if (qrboxSize.width > width || qrboxSize.height > height) {
|
throw "'config.qrbox' dimensions should not be greater than the "
|
+ "dimensions of the root HTML element.";
|
}
|
return {
|
x: (width - qrboxSize.width) / 2,
|
y: (height - qrboxSize.height) / 2,
|
width: qrboxSize.width,
|
height: qrboxSize.height
|
};
|
};
|
Html5Qrcode.prototype.possiblyInsertShadingElement = function (element, width, height, qrboxSize) {
|
if ((width - qrboxSize.width) < 1 || (height - qrboxSize.height) < 1) {
|
return;
|
}
|
var shadingElement = document.createElement("div");
|
shadingElement.style.position = "absolute";
|
var rightLeftBorderSize = (width - qrboxSize.width) / 2;
|
var topBottomBorderSize = (height - qrboxSize.height) / 2;
|
shadingElement.style.borderLeft
|
= "".concat(rightLeftBorderSize, "px solid rgba(0, 0, 0, 0.48)");
|
shadingElement.style.borderRight
|
= "".concat(rightLeftBorderSize, "px solid rgba(0, 0, 0, 0.48)");
|
shadingElement.style.borderTop
|
= "".concat(topBottomBorderSize, "px solid rgba(0, 0, 0, 0.48)");
|
shadingElement.style.borderBottom
|
= "".concat(topBottomBorderSize, "px solid rgba(0, 0, 0, 0.48)");
|
shadingElement.style.boxSizing = "border-box";
|
shadingElement.style.top = "0px";
|
shadingElement.style.bottom = "0px";
|
shadingElement.style.left = "0px";
|
shadingElement.style.right = "0px";
|
shadingElement.id = "".concat(Constants.SHADED_REGION_ELEMENT_ID);
|
if ((width - qrboxSize.width) < 11
|
|| (height - qrboxSize.height) < 11) {
|
this.hasBorderShaders = false;
|
}
|
else {
|
var smallSize = 5;
|
var largeSize = 40;
|
this.insertShaderBorders(shadingElement, largeSize, smallSize, -smallSize, null, 0, true);
|
this.insertShaderBorders(shadingElement, largeSize, smallSize, -smallSize, null, 0, false);
|
this.insertShaderBorders(shadingElement, largeSize, smallSize, null, -smallSize, 0, true);
|
this.insertShaderBorders(shadingElement, largeSize, smallSize, null, -smallSize, 0, false);
|
this.insertShaderBorders(shadingElement, smallSize, largeSize + smallSize, -smallSize, null, -smallSize, true);
|
this.insertShaderBorders(shadingElement, smallSize, largeSize + smallSize, null, -smallSize, -smallSize, true);
|
this.insertShaderBorders(shadingElement, smallSize, largeSize + smallSize, -smallSize, null, -smallSize, false);
|
this.insertShaderBorders(shadingElement, smallSize, largeSize + smallSize, null, -smallSize, -smallSize, false);
|
this.hasBorderShaders = true;
|
}
|
element.append(shadingElement);
|
};
|
Html5Qrcode.prototype.insertShaderBorders = function (shaderElem, width, height, top, bottom, side, isLeft) {
|
var elem = document.createElement("div");
|
elem.style.position = "absolute";
|
elem.style.backgroundColor = Constants.BORDER_SHADER_DEFAULT_COLOR;
|
elem.style.width = "".concat(width, "px");
|
elem.style.height = "".concat(height, "px");
|
if (top !== null) {
|
elem.style.top = "".concat(top, "px");
|
}
|
if (bottom !== null) {
|
elem.style.bottom = "".concat(bottom, "px");
|
}
|
if (isLeft) {
|
elem.style.left = "".concat(side, "px");
|
}
|
else {
|
elem.style.right = "".concat(side, "px");
|
}
|
if (!this.borderShaders) {
|
this.borderShaders = [];
|
}
|
this.borderShaders.push(elem);
|
shaderElem.appendChild(elem);
|
};
|
Html5Qrcode.prototype.showPausedState = function () {
|
if (!this.scannerPausedUiElement) {
|
throw "[internal error] scanner paused UI element not found";
|
}
|
this.scannerPausedUiElement.style.display = "block";
|
};
|
Html5Qrcode.prototype.hidePausedState = function () {
|
if (!this.scannerPausedUiElement) {
|
throw "[internal error] scanner paused UI element not found";
|
}
|
this.scannerPausedUiElement.style.display = "none";
|
};
|
Html5Qrcode.prototype.getTimeoutFps = function (fps) {
|
return 1000 / fps;
|
};
|
return Html5Qrcode;
|
}());
|
exports.Html5Qrcode = Html5Qrcode;
|
//# sourceMappingURL=html5-qrcode.js.map
|
