react-qrcode-scan
Version:
React componnent write by typescript for scan qrcode base on instascan.js
158 lines (157 loc) • 7.76 kB
JavaScript
"use strict";
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
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;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.QRScaner = exports.Camera = void 0;
var React = require("react");
require("webrtc-adapter");
var plainerror_1 = require("plainerror");
var camera_1 = require("./core/camera");
var scanner_1 = require("./core/scanner");
var noop = function (_) { };
var Camera = (function (_super) {
__extends(Camera, _super);
function Camera() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.state = {
ready: false,
};
return _this;
}
Camera.prototype.componentDidMount = function () {
var _a;
return __awaiter(this, void 0, void 0, function () {
var _b, err, cameras;
return __generator(this, function (_c) {
switch (_c.label) {
case 0: return [4, plainerror_1.default(camera_1.default.getCameras, camera_1.default)()];
case 1:
_b = _c.sent(), err = _b[0], cameras = _b[1];
if (err) {
(_a = this.props) === null || _a === void 0 ? void 0 : _a.onError(err);
return [2];
}
this.cameras = cameras;
this.setState({
ready: true,
});
return [2];
}
});
});
};
Camera.prototype.render = function () {
var ready = this.state.ready;
return ready ? this.props.children(this.cameras) : null;
};
return Camera;
}(React.PureComponent));
exports.Camera = Camera;
var QRScaner = (function (_super) {
__extends(QRScaner, _super);
function QRScaner() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.previewer = React.createRef();
return _this;
}
QRScaner.prototype.shouldComponentUpdate = function (_a) {
var _b = _a.stop, stop = _b === void 0 ? false : _b, _c = _a.onStop, onStop = _c === void 0 ? noop : _c, _d = _a.options, options = _d === void 0 ? {} : _d, camera = _a.camera;
if (this.scanner) {
if (stop) {
this.scanner.stop().then(onStop).catch(onStop);
return false;
}
if (camera && camera.id !== this.props.camera.id) {
this.initScanner(camera, options);
}
}
return false;
};
QRScaner.prototype.destroyScanner = function () {
var _a, _b;
this.scanner.removeAllListeners();
(_b = (_a = this.scanner) === null || _a === void 0 ? void 0 : _a.stop) === null || _b === void 0 ? void 0 : _b.call(_a);
this.scanner = null;
};
QRScaner.prototype.initScanner = function (camera, options) {
var _a, _b;
if (options === void 0) { options = {}; }
this.scanner = new scanner_1.default(__assign(__assign({}, options), { video: this.previewer.current }));
this.scanner.addListener("scan", this.props.onScan);
this.scanner.addListener("active", this.props.onActive || noop);
this.scanner.addListener("inActive", this.props.onInActive || noop);
(_b = (_a = this.props) === null || _a === void 0 ? void 0 : _a.onStart) === null || _b === void 0 ? void 0 : _b.call(_a, camera);
this.scanner.start(camera);
};
QRScaner.prototype.componentDidMount = function () {
var _a = this.props, camera = _a.camera, _b = _a.options, options = _b === void 0 ? {} : _b;
this.initScanner(camera, options);
};
QRScaner.prototype.componentWillUnmount = function () {
this.destroyScanner();
};
QRScaner.prototype.render = function () {
var _a = this.props, _b = _a.videoAttr, videoAttr = _b === void 0 ? {} : _b, style = _a.style, className = _a.className;
return React.createElement("video", __assign({ className: className, style: style }, videoAttr, { ref: this.previewer }));
};
return QRScaner;
}(React.Component));
exports.QRScaner = QRScaner;