272 lines
37 KiB
JavaScript
272 lines
37 KiB
JavaScript
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import { ChangeDetectionStrategy, Component, EventEmitter, Input, Output, ViewChild, } from "@angular/core";
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import { toCanvas, toDataURL, toString, } from "qrcode";
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import * as i0 from "@angular/core";
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import * as i1 from "@angular/platform-browser";
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class QRCodeComponent {
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constructor(renderer, sanitizer) {
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this.renderer = renderer;
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this.sanitizer = sanitizer;
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this.allowEmptyString = false;
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this.colorDark = "#000000ff";
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this.colorLight = "#ffffffff";
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this.cssClass = "qrcode";
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this.elementType = "canvas";
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this.errorCorrectionLevel = "M";
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this.margin = 4;
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this.qrdata = "";
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this.scale = 4;
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this.width = 10;
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this.qrCodeURL = new EventEmitter();
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this.context = null;
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}
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async ngOnChanges() {
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await this.createQRCode();
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}
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isValidQrCodeText(data) {
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if (this.allowEmptyString === false) {
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return !(typeof data === "undefined" ||
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data === "" ||
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data === "null" ||
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data === null);
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}
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return !(typeof data === "undefined");
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}
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toDataURL(qrCodeConfig) {
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return new Promise((resolve, reject) => {
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toDataURL(this.qrdata, qrCodeConfig, (err, url) => {
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if (err) {
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reject(err);
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}
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else {
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resolve(url);
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}
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});
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});
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}
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toCanvas(canvas, qrCodeConfig) {
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return new Promise((resolve, reject) => {
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toCanvas(canvas, this.qrdata, qrCodeConfig, (error) => {
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if (error) {
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reject(error);
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}
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else {
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resolve("success");
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}
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});
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});
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}
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toSVG(qrCodeConfig) {
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return new Promise((resolve, reject) => {
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toString(this.qrdata, qrCodeConfig, (err, url) => {
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if (err) {
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reject(err);
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}
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else {
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resolve(url);
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}
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});
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});
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}
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renderElement(element) {
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for (const node of this.qrcElement.nativeElement.childNodes) {
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this.renderer.removeChild(this.qrcElement.nativeElement, node);
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}
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this.renderer.appendChild(this.qrcElement.nativeElement, element);
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}
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async createQRCode() {
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if (this.version && this.version > 40) {
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console.warn("[angularx-qrcode] max value for `version` is 40");
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this.version = 40;
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}
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else if (this.version && this.version < 1) {
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console.warn("[angularx-qrcode]`min value for `version` is 1");
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this.version = 1;
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}
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else if (this.version !== undefined && isNaN(this.version)) {
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console.warn("[angularx-qrcode] version should be a number, defaulting to auto.");
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this.version = undefined;
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}
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try {
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if (!this.isValidQrCodeText(this.qrdata)) {
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throw new Error("[angularx-qrcode] Field `qrdata` is empty, set 'allowEmptyString=\"true\"' to overwrite this behaviour.");
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}
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if (this.isValidQrCodeText(this.qrdata) && this.qrdata === "") {
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this.qrdata = " ";
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}
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const config = {
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color: {
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dark: this.colorDark,
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light: this.colorLight,
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},
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errorCorrectionLevel: this.errorCorrectionLevel,
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margin: this.margin,
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scale: this.scale,
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version: this.version,
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width: this.width,
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};
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const centerImageSrc = this.imageSrc;
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const centerImageHeight = this.imageHeight || 40;
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const centerImageWidth = this.imageWidth || 40;
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switch (this.elementType) {
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case "canvas": {
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const canvasElement = this.renderer.createElement("canvas");
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this.context = canvasElement.getContext("2d");
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this.toCanvas(canvasElement, config)
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.then(() => {
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if (this.ariaLabel) {
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this.renderer.setAttribute(canvasElement, "aria-label", `${this.ariaLabel}`);
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}
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if (this.title) {
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this.renderer.setAttribute(canvasElement, "title", `${this.title}`);
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}
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if (centerImageSrc && this.context) {
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this.centerImage = new Image(centerImageWidth, centerImageHeight);
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if (centerImageSrc !== this.centerImage.src) {
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this.centerImage.src = centerImageSrc;
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}
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if (centerImageHeight !== this.centerImage.height) {
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this.centerImage.height = centerImageHeight;
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}
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if (centerImageWidth !== this.centerImage.width) {
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this.centerImage.width = centerImageWidth;
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}
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const centerImage = this.centerImage;
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if (centerImage) {
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centerImage.onload = () => {
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this.context?.drawImage(centerImage, canvasElement.width / 2 - centerImageWidth / 2, canvasElement.height / 2 - centerImageHeight / 2, centerImageWidth, centerImageHeight);
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};
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}
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}
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this.renderElement(canvasElement);
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this.emitQRCodeURL(canvasElement);
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})
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.catch((e) => {
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console.error("[angularx-qrcode] canvas error:", e);
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});
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break;
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}
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case "svg": {
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const svgParentElement = this.renderer.createElement("div");
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this.toSVG(config)
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.then((svgString) => {
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this.renderer.setProperty(svgParentElement, "innerHTML", svgString);
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const svgElement = svgParentElement.firstChild;
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this.renderer.setAttribute(svgElement, "height", `${this.width}`);
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this.renderer.setAttribute(svgElement, "width", `${this.width}`);
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this.renderElement(svgElement);
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this.emitQRCodeURL(svgElement);
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})
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.catch((e) => {
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console.error("[angularx-qrcode] svg error:", e);
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});
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break;
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}
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case "url":
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case "img":
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default: {
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const imgElement = this.renderer.createElement("img");
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this.toDataURL(config)
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.then((dataUrl) => {
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if (this.alt) {
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imgElement.setAttribute("alt", this.alt);
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}
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if (this.ariaLabel) {
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imgElement.setAttribute("aria-label", this.ariaLabel);
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}
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imgElement.setAttribute("src", dataUrl);
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if (this.title) {
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imgElement.setAttribute("title", this.title);
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}
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this.renderElement(imgElement);
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this.emitQRCodeURL(imgElement);
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})
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.catch((e) => {
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console.error("[angularx-qrcode] img/url error:", e);
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});
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}
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}
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}
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catch (e) {
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console.error("[angularx-qrcode] Error generating QR Code:", e.message);
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}
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}
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emitQRCodeURL(element) {
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const className = element.constructor.name;
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if (className === SVGSVGElement.name) {
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const svgHTML = element.outerHTML;
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const blob = new Blob([svgHTML], { type: "image/svg+xml" });
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const urlSvg = URL.createObjectURL(blob);
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const urlSanitized = this.sanitizer.bypassSecurityTrustUrl(urlSvg);
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this.qrCodeURL.emit(urlSanitized);
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return;
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}
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let urlImage = "";
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if (className === HTMLCanvasElement.name) {
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urlImage = element.toDataURL("image/png");
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}
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if (className === HTMLImageElement.name) {
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urlImage = element.src;
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}
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fetch(urlImage)
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.then((urlResponse) => urlResponse.blob())
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.then((blob) => URL.createObjectURL(blob))
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.then((url) => this.sanitizer.bypassSecurityTrustUrl(url))
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.then((urlSanitized) => {
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this.qrCodeURL.emit(urlSanitized);
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})
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.catch((error) => {
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console.error("[angularx-qrcode] Error when fetching image/png URL: " + error);
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});
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}
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static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.6", ngImport: i0, type: QRCodeComponent, deps: [{ token: i0.Renderer2 }, { token: i1.DomSanitizer }], target: i0.ɵɵFactoryTarget.Component }); }
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static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.6", type: QRCodeComponent, selector: "qrcode", inputs: { allowEmptyString: "allowEmptyString", colorDark: "colorDark", colorLight: "colorLight", cssClass: "cssClass", elementType: "elementType", errorCorrectionLevel: "errorCorrectionLevel", imageSrc: "imageSrc", imageHeight: "imageHeight", imageWidth: "imageWidth", margin: "margin", qrdata: "qrdata", scale: "scale", version: "version", width: "width", alt: "alt", ariaLabel: "ariaLabel", title: "title" }, outputs: { qrCodeURL: "qrCodeURL" }, viewQueries: [{ propertyName: "qrcElement", first: true, predicate: ["qrcElement"], descendants: true, static: true }], usesOnChanges: true, ngImport: i0, template: `<div #qrcElement [class]="cssClass"></div>`, isInline: true, changeDetection: i0.ChangeDetectionStrategy.OnPush }); }
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}
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export { QRCodeComponent };
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i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.6", ngImport: i0, type: QRCodeComponent, decorators: [{
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type: Component,
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args: [{
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selector: "qrcode",
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changeDetection: ChangeDetectionStrategy.OnPush,
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template: `<div #qrcElement [class]="cssClass"></div>`,
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}]
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}], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i1.DomSanitizer }]; }, propDecorators: { allowEmptyString: [{
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type: Input
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}], colorDark: [{
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type: Input
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}], colorLight: [{
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type: Input
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}], cssClass: [{
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type: Input
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}], elementType: [{
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type: Input
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}], errorCorrectionLevel: [{
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type: Input
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}], imageSrc: [{
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type: Input
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}], imageHeight: [{
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type: Input
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}], imageWidth: [{
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type: Input
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}], margin: [{
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type: Input
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}], qrdata: [{
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type: Input
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}], scale: [{
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type: Input
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}], version: [{
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type: Input
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}], width: [{
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type: Input
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}], alt: [{
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type: Input
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}], ariaLabel: [{
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type: Input
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}], title: [{
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type: Input
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}], qrCodeURL: [{
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type: Output
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}], qrcElement: [{
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type: ViewChild,
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args: ["qrcElement", { static: true }]
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}] } });
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