Add barcode-detector-api-polyfill dependency and update environment variable declarations in SvelteKit project
This commit is contained in:
+6
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import { Exception, Result } from '@zxing/library';
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import { IScannerControls } from './IScannerControls';
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/**
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* Callback format for continuous decode scan.
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*/
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export declare type DecodeContinuouslyCallback = (result: Result | undefined, error: Exception | undefined, controls: IScannerControls) => void;
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+2
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export {};
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//# sourceMappingURL=DecodeContinuouslyCallback.js.map
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+1
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{"version":3,"file":"DecodeContinuouslyCallback.js","sourceRoot":"","sources":["../../../src/common/DecodeContinuouslyCallback.ts"],"names":[],"mappings":""}
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+25
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import { LuminanceSource } from '@zxing/library';
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export declare class HTMLCanvasElementLuminanceSource extends LuminanceSource {
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private canvas;
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private static DEGREE_TO_RADIANS;
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private static makeBufferFromCanvasImageData;
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private static toGrayscaleBuffer;
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private buffer;
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private tempCanvasElement?;
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constructor(canvas: HTMLCanvasElement);
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getRow(y: number, row: Uint8ClampedArray): Uint8ClampedArray;
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getMatrix(): Uint8ClampedArray;
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isCropSupported(): boolean;
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crop(left: number, top: number, width: number, height: number): LuminanceSource;
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/**
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* This is always true, since the image is a gray-scale image.
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*
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* @return true
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*/
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isRotateSupported(): boolean;
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rotateCounterClockwise(): LuminanceSource;
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rotateCounterClockwise45(): LuminanceSource;
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invert(): LuminanceSource;
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private getTempCanvasElement;
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private rotate;
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}
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+132
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import { IllegalArgumentException, InvertedLuminanceSource, LuminanceSource, } from '@zxing/library';
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/**/
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export class HTMLCanvasElementLuminanceSource extends LuminanceSource {
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constructor(canvas) {
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super(canvas.width, canvas.height);
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this.canvas = canvas;
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this.tempCanvasElement = null;
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this.buffer = HTMLCanvasElementLuminanceSource.makeBufferFromCanvasImageData(canvas);
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}
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static makeBufferFromCanvasImageData(canvas) {
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let canvasCtx;
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try {
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canvasCtx = canvas.getContext('2d', { willReadFrequently: true });
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}
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catch (e) {
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canvasCtx = canvas.getContext('2d');
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}
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if (!canvasCtx) {
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throw new Error('Couldn\'t get canvas context.');
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}
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const imageData = canvasCtx.getImageData(0, 0, canvas.width, canvas.height);
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return HTMLCanvasElementLuminanceSource.toGrayscaleBuffer(imageData.data, canvas.width, canvas.height);
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}
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static toGrayscaleBuffer(imageBuffer, width, height) {
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const grayscaleBuffer = new Uint8ClampedArray(width * height);
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for (let i = 0, j = 0, length = imageBuffer.length; i < length; i += 4, j++) {
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let gray;
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const alpha = imageBuffer[i + 3];
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// The color of fully-transparent pixels is irrelevant. They are often, technically, fully-transparent
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// black (0 alpha, and then 0 RGB). They are often used, of course as the "white" area in a
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// barcode image. Force any such pixel to be white:
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if (alpha === 0) {
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gray = 0xFF;
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}
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else {
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const pixelR = imageBuffer[i];
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const pixelG = imageBuffer[i + 1];
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const pixelB = imageBuffer[i + 2];
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// .299R + 0.587G + 0.114B (YUV/YIQ for PAL and NTSC),
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// (306*R) >> 10 is approximately equal to R*0.299, and so on.
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// 0x200 >> 10 is 0.5, it implements rounding.
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// tslint:disable-next-line:no-bitwise
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gray = (306 * pixelR + 601 * pixelG + 117 * pixelB + 0x200) >> 10;
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}
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grayscaleBuffer[j] = gray;
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}
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return grayscaleBuffer;
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}
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getRow(y /*int*/, row) {
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if (y < 0 || y >= this.getHeight()) {
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throw new IllegalArgumentException('Requested row is outside the image: ' + y);
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}
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const width = this.getWidth();
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const start = y * width;
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if (row === null) {
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row = this.buffer.slice(start, start + width);
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}
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else {
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if (row.length < width) {
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row = new Uint8ClampedArray(width);
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}
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// The underlying raster of image consists of bytes with the luminance values
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// TODO: can avoid set/slice?
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row.set(this.buffer.slice(start, start + width));
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}
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return row;
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}
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getMatrix() {
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return this.buffer;
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}
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isCropSupported() {
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return true;
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}
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crop(left /*int*/, top /*int*/, width /*int*/, height /*int*/) {
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super.crop(left, top, width, height);
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return this;
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}
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/**
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* This is always true, since the image is a gray-scale image.
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*
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* @return true
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*/
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isRotateSupported() {
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return true;
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}
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rotateCounterClockwise() {
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this.rotate(-90);
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return this;
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}
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rotateCounterClockwise45() {
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this.rotate(-45);
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return this;
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}
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invert() {
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return new InvertedLuminanceSource(this);
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}
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getTempCanvasElement() {
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if (null === this.tempCanvasElement) {
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const tempCanvasElement = this.canvas.ownerDocument.createElement('canvas');
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tempCanvasElement.width = this.canvas.width;
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tempCanvasElement.height = this.canvas.height;
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this.tempCanvasElement = tempCanvasElement;
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}
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return this.tempCanvasElement;
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}
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rotate(angle) {
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const tempCanvasElement = this.getTempCanvasElement();
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if (!tempCanvasElement) {
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throw new Error('Could not create a Canvas element.');
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}
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const angleRadians = angle * HTMLCanvasElementLuminanceSource.DEGREE_TO_RADIANS;
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// Calculate and set new dimensions for temp canvas
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const width = this.canvas.width;
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const height = this.canvas.height;
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const newWidth = Math.ceil(Math.abs(Math.cos(angleRadians)) * width + Math.abs(Math.sin(angleRadians)) * height);
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const newHeight = Math.ceil(Math.abs(Math.sin(angleRadians)) * width + Math.abs(Math.cos(angleRadians)) * height);
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tempCanvasElement.width = newWidth;
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tempCanvasElement.height = newHeight;
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const tempContext = tempCanvasElement.getContext('2d');
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if (!tempContext) {
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throw new Error('Could not create a Canvas Context element.');
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}
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// Draw at center of temp canvas to prevent clipping of image data
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tempContext.translate(newWidth / 2, newHeight / 2);
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tempContext.rotate(angleRadians);
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tempContext.drawImage(this.canvas, width / -2, height / -2);
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this.buffer = HTMLCanvasElementLuminanceSource.makeBufferFromCanvasImageData(tempCanvasElement);
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return this;
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}
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}
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HTMLCanvasElementLuminanceSource.DEGREE_TO_RADIANS = Math.PI / 180;
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//# sourceMappingURL=HTMLCanvasElementLuminanceSource.js.map
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Generated
Vendored
+1
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+4
@@ -0,0 +1,4 @@
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/**
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* HTML elements that can be decoded.
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*/
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export declare type HTMLVisualMediaElement = HTMLVideoElement | HTMLImageElement;
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+2
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export {};
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//# sourceMappingURL=HTMLVisualMediaElement.js.map
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+1
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{"version":3,"file":"HTMLVisualMediaElement.js","sourceRoot":"","sources":["../../../src/common/HTMLVisualMediaElement.ts"],"names":[],"mappings":""}
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+30
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export interface IScannerControls {
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/**
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* Stops the scan process loop.
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*/
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stop: () => void;
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/**
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* @experimental This is highly unstable and Torch support is not ready on browsers. Use at YOUR OWN risk.
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*/
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switchTorch?: (onOff: boolean) => Promise<void>;
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/**
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* Allows to apply constraints to all tracks or filtered tracks in the stream.
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* @experimental
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*/
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streamVideoConstraintsApply?: (constraints: MediaTrackConstraints, trackFilter?: (track: MediaStreamTrack) => MediaStreamTrack[]) => void;
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/**
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* Get the desired track constraints.
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* @experimental
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*/
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streamVideoConstraintsGet?: (trackFilter: (track: MediaStreamTrack) => MediaStreamTrack[]) => MediaTrackConstraints;
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/**
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* Get the desired track settings.
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* @experimental
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*/
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streamVideoSettingsGet?: (trackFilter: (track: MediaStreamTrack) => MediaStreamTrack[]) => MediaTrackSettings;
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/**
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* Get the desired track capabilities.
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* @experimental
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*/
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streamVideoCapabilitiesGet?: (trackFilter: (track: MediaStreamTrack) => MediaStreamTrack[]) => MediaTrackCapabilities;
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}
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+2
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export {};
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//# sourceMappingURL=IScannerControls.js.map
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||||
+1
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{"version":3,"file":"IScannerControls.js","sourceRoot":"","sources":["../../../src/common/IScannerControls.ts"],"names":[],"mappings":""}
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+8
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/**
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* If navigator is present.
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*/
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export declare function hasNavigator(): boolean;
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/**
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* If enumerateDevices under navigator is supported.
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*/
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export declare function canEnumerateDevices(): boolean;
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+19
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/**
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* If navigator is present.
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*/
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export function hasNavigator() {
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return typeof navigator !== 'undefined';
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}
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/**
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* If mediaDevices under navigator is supported.
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*/
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function isMediaDevicesSupported() {
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return hasNavigator() && !!navigator.mediaDevices;
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}
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/**
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* If enumerateDevices under navigator is supported.
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*/
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export function canEnumerateDevices() {
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return !!(isMediaDevicesSupported() && navigator.mediaDevices.enumerateDevices);
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}
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//# sourceMappingURL=navigator-utils.js.map
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+1
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||||
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|
||||
+14
@@ -0,0 +1,14 @@
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||||
export { BarcodeFormat } from '@zxing/library';
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||||
export * from './common/HTMLCanvasElementLuminanceSource';
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||||
export * from './common/HTMLVisualMediaElement';
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||||
export * from './common/IScannerControls';
|
||||
export * from './readers/BrowserAztecCodeReader';
|
||||
export * from './readers/BrowserMultiFormatOneDReader';
|
||||
export * from './readers/BrowserCodeReader';
|
||||
export * from './readers/BrowserDatamatrixCodeReader';
|
||||
export * from './readers/BrowserMultiFormatReader';
|
||||
export * from './readers/BrowserPDF417Reader';
|
||||
export * from './readers/BrowserQRCodeReader';
|
||||
export * from './readers/IBrowserCodeReaderOptions';
|
||||
export * from './writers/BrowserCodeSvgWriter';
|
||||
export * from './writers/BrowserQRCodeSvgWriter';
|
||||
+20
@@ -0,0 +1,20 @@
|
||||
// public API
|
||||
// core
|
||||
export { BarcodeFormat } from '@zxing/library';
|
||||
// common
|
||||
export * from './common/HTMLCanvasElementLuminanceSource';
|
||||
export * from './common/HTMLVisualMediaElement';
|
||||
export * from './common/IScannerControls';
|
||||
// readers
|
||||
export * from './readers/BrowserAztecCodeReader';
|
||||
export * from './readers/BrowserMultiFormatOneDReader';
|
||||
export * from './readers/BrowserCodeReader';
|
||||
export * from './readers/BrowserDatamatrixCodeReader';
|
||||
export * from './readers/BrowserMultiFormatReader';
|
||||
export * from './readers/BrowserPDF417Reader';
|
||||
export * from './readers/BrowserQRCodeReader';
|
||||
export * from './readers/IBrowserCodeReaderOptions';
|
||||
// writers
|
||||
export * from './writers/BrowserCodeSvgWriter';
|
||||
export * from './writers/BrowserQRCodeSvgWriter';
|
||||
//# sourceMappingURL=index.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/index.ts"],"names":[],"mappings":"AAAA,aAAa;AAEb,OAAO;AACP,OAAO,EAAE,aAAa,EAAE,MAAM,gBAAgB,CAAC;AAE/C,SAAS;AACT,cAAc,2CAA2C,CAAC;AAC1D,cAAc,iCAAiC,CAAC;AAChD,cAAc,2BAA2B,CAAC;AAE1C,UAAU;AACV,cAAc,kCAAkC,CAAC;AACjD,cAAc,wCAAwC,CAAC;AACvD,cAAc,6BAA6B,CAAC;AAC5C,cAAc,uCAAuC,CAAC;AACtD,cAAc,oCAAoC,CAAC;AACnD,cAAc,+BAA+B,CAAC;AAC9C,cAAc,+BAA+B,CAAC;AAC9C,cAAc,qCAAqC,CAAC;AAEpD,UAAU;AACV,cAAc,gCAAgC,CAAC;AAC/C,cAAc,kCAAkC,CAAC"}
|
||||
+15
@@ -0,0 +1,15 @@
|
||||
import { DecodeHintType } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
|
||||
/**
|
||||
* Aztec Code reader to use from browser.
|
||||
*
|
||||
* @class BrowserAztecCodeReader
|
||||
* @extends {BrowserCodeReader}
|
||||
*/
|
||||
export declare class BrowserAztecCodeReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserAztecCodeReader.
|
||||
*/
|
||||
constructor(hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
|
||||
}
|
||||
+17
@@ -0,0 +1,17 @@
|
||||
import { AztecCodeReader } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
/**
|
||||
* Aztec Code reader to use from browser.
|
||||
*
|
||||
* @class BrowserAztecCodeReader
|
||||
* @extends {BrowserCodeReader}
|
||||
*/
|
||||
export class BrowserAztecCodeReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserAztecCodeReader.
|
||||
*/
|
||||
constructor(hints, options) {
|
||||
super(new AztecCodeReader(), hints, options);
|
||||
}
|
||||
}
|
||||
//# sourceMappingURL=BrowserAztecCodeReader.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"BrowserAztecCodeReader.js","sourceRoot":"","sources":["../../../src/readers/BrowserAztecCodeReader.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,eAAe,EAAkB,MAAM,gBAAgB,CAAC;AACjE,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAGxD;;;;;GAKG;AACH,MAAM,OAAO,sBAAuB,SAAQ,iBAAiB;IAC3D;;OAEG;IACH,YACE,KAAgC,EAChC,OAAmC;QAEnC,KAAK,CAAC,IAAI,eAAe,EAAE,EAAE,KAAK,EAAE,OAAO,CAAC,CAAC;IAC/C,CAAC;CACF"}
|
||||
+283
@@ -0,0 +1,283 @@
|
||||
import { BarcodeFormat, BinaryBitmap, DecodeHintType, Reader, Result } from '@zxing/library';
|
||||
import { DecodeContinuouslyCallback } from '../common/DecodeContinuouslyCallback';
|
||||
import { HTMLVisualMediaElement } from '../common/HTMLVisualMediaElement';
|
||||
import { IScannerControls } from '../common/IScannerControls';
|
||||
import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
|
||||
/**
|
||||
* Base class for browser code reader.
|
||||
*/
|
||||
export declare class BrowserCodeReader {
|
||||
protected readonly reader: Reader;
|
||||
hints: Map<DecodeHintType, any>;
|
||||
/**
|
||||
* Allows to change the possible formats the decoder should
|
||||
* search for while scanning some image. Useful for changing
|
||||
* the possible formats during BrowserCodeReader::scan.
|
||||
*/
|
||||
set possibleFormats(formats: BarcodeFormat[]);
|
||||
/**
|
||||
* Defines what the videoElement src will be.
|
||||
*
|
||||
* @param videoElement
|
||||
* @param stream The stream to be added as a source.
|
||||
*/
|
||||
static addVideoSource(videoElement: HTMLVideoElement, stream: MediaStream): void;
|
||||
/**
|
||||
* Enables or disables the torch in a media stream.
|
||||
*
|
||||
* @experimental This doesn't work across all browsers and is still a Draft.
|
||||
*/
|
||||
static mediaStreamSetTorch(track: MediaStreamTrack, onOff: boolean): Promise<void>;
|
||||
/**
|
||||
* Checks if the stream has torch support.
|
||||
*/
|
||||
static mediaStreamIsTorchCompatible(params: MediaStream): boolean;
|
||||
/**
|
||||
*
|
||||
* @param track The media stream track that will be checked for compatibility.
|
||||
*/
|
||||
static mediaStreamIsTorchCompatibleTrack(track: MediaStreamTrack): boolean;
|
||||
/**
|
||||
* Checks if the given video element is currently playing.
|
||||
*/
|
||||
static isVideoPlaying(video: HTMLVideoElement): boolean;
|
||||
/**
|
||||
* Searches and validates a media element.
|
||||
*/
|
||||
static getMediaElement(mediaElementId: string, type: string): HTMLVisualMediaElement;
|
||||
/**
|
||||
* Receives a source and makes sure to return a Video Element from it or fail.
|
||||
*/
|
||||
static createVideoElement(videoThingy?: HTMLVideoElement | string): HTMLVideoElement;
|
||||
/**
|
||||
* Receives a source and makes sure to return an Image Element from it or fail.
|
||||
*/
|
||||
static prepareImageElement(imageSource?: HTMLImageElement | string): HTMLImageElement;
|
||||
/**
|
||||
* Sets a HTMLVideoElement for scanning or creates a new one.
|
||||
*
|
||||
* @param videoElem The HTMLVideoElement to be set.
|
||||
*/
|
||||
static prepareVideoElement(videoElem?: HTMLVideoElement | string): HTMLVideoElement;
|
||||
/**
|
||||
* Checks if and HTML image is loaded.
|
||||
*/
|
||||
static isImageLoaded(img: HTMLImageElement): boolean;
|
||||
/**
|
||||
* Creates a binaryBitmap based in a canvas.
|
||||
*
|
||||
* @param canvas HTML canvas element containing the image source draw.
|
||||
*/
|
||||
static createBinaryBitmapFromCanvas(canvas: HTMLCanvasElement): BinaryBitmap;
|
||||
/**
|
||||
* Overwriting this allows you to manipulate the snapshot image in anyway you want before decode.
|
||||
*/
|
||||
static drawImageOnCanvas(canvasElementContext: CanvasRenderingContext2D, srcElement: HTMLVisualMediaElement): void;
|
||||
static getMediaElementDimensions(mediaElement: HTMLVisualMediaElement): {
|
||||
height: number;
|
||||
width: number;
|
||||
};
|
||||
/**
|
||||
* 🖌 Prepares the canvas for capture and scan frames.
|
||||
*/
|
||||
static createCaptureCanvas(mediaElement: HTMLVisualMediaElement): HTMLCanvasElement;
|
||||
/**
|
||||
* Just tries to play the video and logs any errors.
|
||||
* The play call is only made is the video is not already playing.
|
||||
*/
|
||||
static tryPlayVideo(videoElement: HTMLVideoElement): Promise<boolean>;
|
||||
/**
|
||||
* Creates a canvas and draws the current image frame from the media element on it.
|
||||
*
|
||||
* @param mediaElement HTML media element to extract an image frame from.
|
||||
*/
|
||||
static createCanvasFromMediaElement(mediaElement: HTMLVisualMediaElement): HTMLCanvasElement;
|
||||
/**
|
||||
* Creates a binaryBitmap based in some image source.
|
||||
*
|
||||
* @param mediaElement HTML element containing drawable image source.
|
||||
*/
|
||||
static createBinaryBitmapFromMediaElem(mediaElement: HTMLVisualMediaElement): BinaryBitmap;
|
||||
static destroyImageElement(imageElement: HTMLImageElement): void;
|
||||
/**
|
||||
* Lists all the available video input devices.
|
||||
*/
|
||||
static listVideoInputDevices(): Promise<MediaDeviceInfo[]>;
|
||||
/**
|
||||
* Let's you find a device using it's Id.
|
||||
*/
|
||||
static findDeviceById(deviceId: string): Promise<MediaDeviceInfo | undefined>;
|
||||
/**
|
||||
* Unbinds a HTML video src property.
|
||||
*/
|
||||
static cleanVideoSource(videoElement: HTMLVideoElement): void;
|
||||
/**
|
||||
* Stops all media streams that are created.
|
||||
*/
|
||||
static releaseAllStreams(): void;
|
||||
/**
|
||||
* Waits for a video to load and then hits play on it.
|
||||
* To accomplish that, it binds listeners and callbacks to the video element.
|
||||
*
|
||||
* @param element The video element.
|
||||
* @param callbackFn Callback invoked when the video is played.
|
||||
*/
|
||||
protected static playVideoOnLoadAsync(element: HTMLVideoElement, timeout: number): Promise<boolean>;
|
||||
/**
|
||||
* Sets the new stream and request a new decoding-with-delay.
|
||||
*
|
||||
* @param stream The stream to be shown in the video element.
|
||||
* @param decodeFn A callback for the decode method.
|
||||
*/
|
||||
protected static attachStreamToVideo(stream: MediaStream, preview?: string | HTMLVideoElement, previewPlayTimeout?: number): Promise<HTMLVideoElement>;
|
||||
/**
|
||||
* Keeps track to created media streams.
|
||||
* @private there is no need this array to be accessible from outside.
|
||||
*/
|
||||
private static streamTracker;
|
||||
/**
|
||||
* Returns a Promise that resolves when the given image element loads.
|
||||
*/
|
||||
private static _waitImageLoad;
|
||||
/**
|
||||
* Checks if the `callbackFn` is defined, otherwise throws.
|
||||
*/
|
||||
private static checkCallbackFnOrThrow;
|
||||
/**
|
||||
* Standard method to dispose a media stream object.
|
||||
*/
|
||||
private static disposeMediaStream;
|
||||
/**
|
||||
* BrowserCodeReader specific configuration options.
|
||||
*/
|
||||
protected readonly options: IBrowserCodeReaderOptions;
|
||||
/**
|
||||
* Creates an instance of BrowserCodeReader.
|
||||
* @param {Reader} reader The reader instance to decode the barcode
|
||||
* @param hints Holds the hints the user sets for the Reader.
|
||||
*/
|
||||
constructor(reader: Reader, hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
|
||||
/**
|
||||
* Gets the BinaryBitmap for ya! (and decodes it)
|
||||
*/
|
||||
decode(element: HTMLVisualMediaElement): Result;
|
||||
/**
|
||||
* Call the encapsulated readers decode
|
||||
*/
|
||||
decodeBitmap(binaryBitmap: BinaryBitmap): Result;
|
||||
/**
|
||||
* Decodes some barcode from a canvas!
|
||||
*/
|
||||
decodeFromCanvas(canvas: HTMLCanvasElement): Result;
|
||||
/**
|
||||
* Decodes something from an image HTML element.
|
||||
*/
|
||||
decodeFromImageElement(source: string | HTMLImageElement): Promise<Result>;
|
||||
/**
|
||||
* Decodes an image from a URL.
|
||||
*/
|
||||
decodeFromImageUrl(url?: string): Promise<Result>;
|
||||
/**
|
||||
* Continuously tries to decode the barcode from a stream obtained from the given constraints
|
||||
* while showing the video in the specified video element.
|
||||
*
|
||||
* @param {MediaStream} [constraints] the media stream constraints to get s valid media stream to decode from
|
||||
* @param {string|HTMLVideoElement} [previewElem] the video element in page where to show the video while
|
||||
* decoding. Can be either an element id or directly an HTMLVideoElement. Can be undefined, in
|
||||
* which case no video will be shown.
|
||||
*/
|
||||
decodeFromConstraints(constraints: MediaStreamConstraints, previewElem: string | HTMLVideoElement | undefined, callbackFn: DecodeContinuouslyCallback): Promise<IScannerControls>;
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from a stream obtained from the given constraints
|
||||
* while showing the video in the specified video element.
|
||||
*
|
||||
* @param {MediaStream} [constraints] the media stream constraints to get s valid media stream to decode from
|
||||
* @param {string|HTMLVideoElement} [preview] the video element in page where to show the video
|
||||
* while decoding. Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeFromStream(stream: MediaStream, preview: string | HTMLVideoElement | undefined, callbackFn: DecodeContinuouslyCallback): Promise<IScannerControls>;
|
||||
/**
|
||||
* Continuously tries to decode the barcode from the device specified by device while showing
|
||||
* the video in the specified video element.
|
||||
*
|
||||
* @param {string|null} [deviceId] the id of one of the devices obtained after calling
|
||||
* getVideoInputDevices. Can be undefined, in this case it will decode from one of the
|
||||
* available devices, preferring the main camera (environment facing) if available.
|
||||
* @param {string|HTMLVideoElement|null} [video] the video element in page where to show the video
|
||||
* while decoding. Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeFromVideoDevice(deviceId: string | undefined, previewElem: string | HTMLVideoElement | undefined, callbackFn: DecodeContinuouslyCallback): Promise<IScannerControls>;
|
||||
/**
|
||||
* Decodes something from an image HTML element.
|
||||
*/
|
||||
decodeFromVideoElement(source: string | HTMLVideoElement, callbackFn: DecodeContinuouslyCallback): Promise<IScannerControls>;
|
||||
/**
|
||||
* Decodes a video from a URL until it ends.
|
||||
*/
|
||||
decodeFromVideoUrl(url: string, callbackFn: DecodeContinuouslyCallback): Promise<IScannerControls>;
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from a stream obtained from the given
|
||||
* constraints while showing the video in the specified video element.
|
||||
*
|
||||
* @param constraints the media stream constraints to get s valid media stream to decode from
|
||||
* @param videoSource the video element in page where to show the video while decoding.
|
||||
* Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
* The decoding result.
|
||||
*/
|
||||
decodeOnceFromConstraints(constraints: MediaStreamConstraints, videoSource?: string | HTMLVideoElement): Promise<Result>;
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from a stream obtained from the given
|
||||
* constraints while showing the video in the specified video element.
|
||||
*
|
||||
* @param {MediaStream} [constraints] the media stream constraints to get s valid media stream to decode from
|
||||
* @param {string|HTMLVideoElement} [video] the video element in page where to show the video while decoding.
|
||||
* Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeOnceFromStream(stream: MediaStream, preview?: string | HTMLVideoElement): Promise<Result>;
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from the device specified by deviceId
|
||||
* while showing the video in the specified video element.
|
||||
*
|
||||
* @param deviceId the id of one of the devices obtained after calling getVideoInputDevices.
|
||||
* Can be undefined, in this case it will decode from one of the available devices,
|
||||
* preferring the main camera (environment facing) if available.
|
||||
* @param videoSource the video element in page where to show the video while decoding.
|
||||
* Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeOnceFromVideoDevice(deviceId?: string, videoSource?: string | HTMLVideoElement): Promise<Result>;
|
||||
/**
|
||||
* Decodes something from an image HTML element.
|
||||
*/
|
||||
decodeOnceFromVideoElement(source: string | HTMLVideoElement): Promise<Result>;
|
||||
/**
|
||||
* Decodes a video from a URL.
|
||||
*/
|
||||
decodeOnceFromVideoUrl(url: string): Promise<Result>;
|
||||
/**
|
||||
* Tries to decode from the video input until it finds some value.
|
||||
*/
|
||||
scanOneResult(element: HTMLVisualMediaElement, retryIfNotFound?: boolean, retryIfChecksumError?: boolean, retryIfFormatError?: boolean): Promise<Result>;
|
||||
/**
|
||||
* Continuously decodes from video input.
|
||||
*
|
||||
* @param element HTML element to scan/decode from. It will not be disposed or destroyed.
|
||||
* @param callbackFn Called after every scan attempt, being it successful or errored.
|
||||
* @param finalizeCallback Called after scan process reaches the end or stop is called.
|
||||
*/
|
||||
scan(element: HTMLVisualMediaElement, callbackFn: DecodeContinuouslyCallback, finalizeCallback?: (error?: Error) => void): IScannerControls;
|
||||
/**
|
||||
* Waits for the image to load and then tries to decode it.
|
||||
*/
|
||||
private _decodeOnLoadImage;
|
||||
/**
|
||||
* Get MediaStream from browser to be used.
|
||||
* @param constraints constraints the media stream constraints to get s valid media stream to decode from.
|
||||
* @private For private use.
|
||||
*/
|
||||
private getUserMedia;
|
||||
}
|
||||
+909
@@ -0,0 +1,909 @@
|
||||
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());
|
||||
});
|
||||
};
|
||||
import { ArgumentException, BinaryBitmap, ChecksumException, DecodeHintType, FormatException, HybridBinarizer, NotFoundException, } from '@zxing/library';
|
||||
import { HTMLCanvasElementLuminanceSource } from '../common/HTMLCanvasElementLuminanceSource';
|
||||
import { canEnumerateDevices, hasNavigator } from '../common/navigator-utils';
|
||||
const defaultOptions = {
|
||||
delayBetweenScanAttempts: 500,
|
||||
delayBetweenScanSuccess: 500,
|
||||
tryPlayVideoTimeout: 5000,
|
||||
};
|
||||
/**
|
||||
* Base class for browser code reader.
|
||||
*/
|
||||
export class BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserCodeReader.
|
||||
* @param {Reader} reader The reader instance to decode the barcode
|
||||
* @param hints Holds the hints the user sets for the Reader.
|
||||
*/
|
||||
constructor(reader, hints = new Map(), options = {}) {
|
||||
this.reader = reader;
|
||||
this.hints = hints;
|
||||
this.options = Object.assign(Object.assign({}, defaultOptions), options);
|
||||
}
|
||||
/**
|
||||
* Allows to change the possible formats the decoder should
|
||||
* search for while scanning some image. Useful for changing
|
||||
* the possible formats during BrowserCodeReader::scan.
|
||||
*/
|
||||
set possibleFormats(formats) {
|
||||
this.hints.set(DecodeHintType.POSSIBLE_FORMATS, formats);
|
||||
}
|
||||
/**
|
||||
* Defines what the videoElement src will be.
|
||||
*
|
||||
* @param videoElement
|
||||
* @param stream The stream to be added as a source.
|
||||
*/
|
||||
static addVideoSource(videoElement, stream) {
|
||||
// Older browsers may not have `srcObject`
|
||||
try {
|
||||
// @note Throws Exception if interrupted by a new loaded request
|
||||
videoElement.srcObject = stream;
|
||||
}
|
||||
catch (err) {
|
||||
console.error("got interrupted by new loading request");
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Enables or disables the torch in a media stream.
|
||||
*
|
||||
* @experimental This doesn't work across all browsers and is still a Draft.
|
||||
*/
|
||||
static mediaStreamSetTorch(track, onOff) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
yield track.applyConstraints({
|
||||
advanced: [{
|
||||
fillLightMode: onOff ? 'flash' : 'off',
|
||||
torch: onOff ? true : false,
|
||||
}],
|
||||
});
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Checks if the stream has torch support.
|
||||
*/
|
||||
static mediaStreamIsTorchCompatible(params) {
|
||||
const tracks = params.getVideoTracks();
|
||||
for (const track of tracks) {
|
||||
if (BrowserCodeReader.mediaStreamIsTorchCompatibleTrack(track)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
/**
|
||||
*
|
||||
* @param track The media stream track that will be checked for compatibility.
|
||||
*/
|
||||
static mediaStreamIsTorchCompatibleTrack(track) {
|
||||
try {
|
||||
const capabilities = track.getCapabilities();
|
||||
return 'torch' in capabilities;
|
||||
}
|
||||
catch (err) {
|
||||
// some browsers may not be compatible with ImageCapture
|
||||
// so we are ignoring this for now.
|
||||
// tslint:disable-next-line:no-console
|
||||
console.error(err);
|
||||
// tslint:disable-next-line:no-console
|
||||
console.warn('Your browser may be not fully compatible with WebRTC and/or ImageCapture specs. Torch will not be available.');
|
||||
return false;
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Checks if the given video element is currently playing.
|
||||
*/
|
||||
static isVideoPlaying(video) {
|
||||
return video.currentTime > 0 && !video.paused && video.readyState > 2;
|
||||
}
|
||||
/**
|
||||
* Searches and validates a media element.
|
||||
*/
|
||||
static getMediaElement(mediaElementId, type) {
|
||||
const mediaElement = document.getElementById(mediaElementId);
|
||||
if (!mediaElement) {
|
||||
throw new ArgumentException(`element with id '${mediaElementId}' not found`);
|
||||
}
|
||||
if (mediaElement.nodeName.toLowerCase() !== type.toLowerCase()) {
|
||||
throw new ArgumentException(`element with id '${mediaElementId}' must be an ${type} element`);
|
||||
}
|
||||
return mediaElement;
|
||||
}
|
||||
/**
|
||||
* Receives a source and makes sure to return a Video Element from it or fail.
|
||||
*/
|
||||
static createVideoElement(videoThingy) {
|
||||
if (videoThingy instanceof HTMLVideoElement) {
|
||||
return videoThingy;
|
||||
}
|
||||
if (typeof videoThingy === 'string') {
|
||||
return BrowserCodeReader.getMediaElement(videoThingy, 'video');
|
||||
}
|
||||
if (!videoThingy && typeof document !== 'undefined') {
|
||||
const videoElement = document.createElement('video');
|
||||
videoElement.width = 200;
|
||||
videoElement.height = 200;
|
||||
return videoElement;
|
||||
}
|
||||
throw new Error('Couldn\'t get videoElement from videoSource!');
|
||||
}
|
||||
/**
|
||||
* Receives a source and makes sure to return an Image Element from it or fail.
|
||||
*/
|
||||
static prepareImageElement(imageSource) {
|
||||
if (imageSource instanceof HTMLImageElement) {
|
||||
return imageSource;
|
||||
}
|
||||
if (typeof imageSource === 'string') {
|
||||
return BrowserCodeReader.getMediaElement(imageSource, 'img');
|
||||
}
|
||||
if (typeof imageSource === 'undefined') {
|
||||
const imageElement = document.createElement('img');
|
||||
imageElement.width = 200;
|
||||
imageElement.height = 200;
|
||||
return imageElement;
|
||||
}
|
||||
throw new Error('Couldn\'t get imageElement from imageSource!');
|
||||
}
|
||||
/**
|
||||
* Sets a HTMLVideoElement for scanning or creates a new one.
|
||||
*
|
||||
* @param videoElem The HTMLVideoElement to be set.
|
||||
*/
|
||||
static prepareVideoElement(videoElem) {
|
||||
const videoElement = BrowserCodeReader.createVideoElement(videoElem);
|
||||
// @todo the following lines should not always be done this way, should conditionally
|
||||
// change according were we created the element or not
|
||||
// Needed for iOS 11
|
||||
videoElement.setAttribute('autoplay', 'true');
|
||||
videoElement.setAttribute('muted', 'true');
|
||||
videoElement.setAttribute('playsinline', 'true');
|
||||
return videoElement;
|
||||
}
|
||||
/**
|
||||
* Checks if and HTML image is loaded.
|
||||
*/
|
||||
static isImageLoaded(img) {
|
||||
// During the onload event, IE correctly identifies any images that
|
||||
// weren't downloaded as not complete. Others should too. Gecko-based
|
||||
// browsers act like NS4 in that they report this incorrectly.
|
||||
if (!img.complete) {
|
||||
return false;
|
||||
}
|
||||
// However, they do have two very useful properties: naturalWidth and
|
||||
// naturalHeight. These give the true size of the image. If it failed
|
||||
// to load, either of these should be zero.
|
||||
if (img.naturalWidth === 0) {
|
||||
return false;
|
||||
}
|
||||
// No other way of checking: assume it’s ok.
|
||||
return true;
|
||||
}
|
||||
/**
|
||||
* Creates a binaryBitmap based in a canvas.
|
||||
*
|
||||
* @param canvas HTML canvas element containing the image source draw.
|
||||
*/
|
||||
static createBinaryBitmapFromCanvas(canvas) {
|
||||
const luminanceSource = new HTMLCanvasElementLuminanceSource(canvas);
|
||||
const hybridBinarizer = new HybridBinarizer(luminanceSource);
|
||||
return new BinaryBitmap(hybridBinarizer);
|
||||
}
|
||||
/**
|
||||
* Overwriting this allows you to manipulate the snapshot image in anyway you want before decode.
|
||||
*/
|
||||
static drawImageOnCanvas(canvasElementContext, srcElement) {
|
||||
canvasElementContext.drawImage(srcElement, 0, 0);
|
||||
}
|
||||
static getMediaElementDimensions(mediaElement) {
|
||||
if (mediaElement instanceof HTMLVideoElement) {
|
||||
return {
|
||||
height: mediaElement.videoHeight,
|
||||
width: mediaElement.videoWidth,
|
||||
};
|
||||
}
|
||||
if (mediaElement instanceof HTMLImageElement) {
|
||||
return {
|
||||
height: mediaElement.naturalHeight || mediaElement.height,
|
||||
width: mediaElement.naturalWidth || mediaElement.width,
|
||||
};
|
||||
}
|
||||
throw new Error('Couldn\'t find the Source\'s dimensions!');
|
||||
}
|
||||
/**
|
||||
* 🖌 Prepares the canvas for capture and scan frames.
|
||||
*/
|
||||
static createCaptureCanvas(mediaElement) {
|
||||
if (!mediaElement) {
|
||||
throw new ArgumentException('Cannot create a capture canvas without a media element.');
|
||||
}
|
||||
if (typeof document === 'undefined') {
|
||||
throw new Error('The page "Document" is undefined, make sure you\'re running in a browser.');
|
||||
}
|
||||
const canvasElement = document.createElement('canvas');
|
||||
const { width, height } = BrowserCodeReader.getMediaElementDimensions(mediaElement);
|
||||
canvasElement.style.width = width + 'px';
|
||||
canvasElement.style.height = height + 'px';
|
||||
canvasElement.width = width;
|
||||
canvasElement.height = height;
|
||||
return canvasElement;
|
||||
}
|
||||
/**
|
||||
* Just tries to play the video and logs any errors.
|
||||
* The play call is only made is the video is not already playing.
|
||||
*/
|
||||
static tryPlayVideo(videoElement) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
if (videoElement === null || videoElement === void 0 ? void 0 : videoElement.ended) {
|
||||
// tslint:disable-next-line:no-console
|
||||
console.error('Trying to play video that has ended.');
|
||||
return false;
|
||||
}
|
||||
if (BrowserCodeReader.isVideoPlaying(videoElement)) {
|
||||
// tslint:disable-next-line:no-console
|
||||
console.warn('Trying to play video that is already playing.');
|
||||
return true;
|
||||
}
|
||||
try {
|
||||
yield videoElement.play();
|
||||
return true;
|
||||
}
|
||||
catch (error) {
|
||||
// tslint:disable-next-line:no-console
|
||||
console.warn('It was not possible to play the video.', error);
|
||||
return false;
|
||||
}
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Creates a canvas and draws the current image frame from the media element on it.
|
||||
*
|
||||
* @param mediaElement HTML media element to extract an image frame from.
|
||||
*/
|
||||
static createCanvasFromMediaElement(mediaElement) {
|
||||
const canvas = BrowserCodeReader.createCaptureCanvas(mediaElement);
|
||||
const ctx = canvas.getContext('2d');
|
||||
if (!ctx) {
|
||||
throw new Error('Couldn\'t find Canvas 2D Context.');
|
||||
}
|
||||
BrowserCodeReader.drawImageOnCanvas(ctx, mediaElement);
|
||||
return canvas;
|
||||
}
|
||||
/**
|
||||
* Creates a binaryBitmap based in some image source.
|
||||
*
|
||||
* @param mediaElement HTML element containing drawable image source.
|
||||
*/
|
||||
static createBinaryBitmapFromMediaElem(mediaElement) {
|
||||
const canvas = BrowserCodeReader.createCanvasFromMediaElement(mediaElement);
|
||||
return BrowserCodeReader.createBinaryBitmapFromCanvas(canvas);
|
||||
}
|
||||
static destroyImageElement(imageElement) {
|
||||
imageElement.src = '';
|
||||
imageElement.removeAttribute('src');
|
||||
imageElement = undefined;
|
||||
}
|
||||
/**
|
||||
* Lists all the available video input devices.
|
||||
*/
|
||||
static listVideoInputDevices() {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
if (!hasNavigator()) {
|
||||
throw new Error('Can\'t enumerate devices, navigator is not present.');
|
||||
}
|
||||
if (!canEnumerateDevices()) {
|
||||
throw new Error('Can\'t enumerate devices, method not supported.');
|
||||
}
|
||||
const devices = yield navigator.mediaDevices.enumerateDevices();
|
||||
const videoDevices = [];
|
||||
for (const device of devices) {
|
||||
const kind = device.kind === 'video' ? 'videoinput' : device.kind;
|
||||
if (kind !== 'videoinput') {
|
||||
continue;
|
||||
}
|
||||
const deviceId = device.deviceId || device.id;
|
||||
const label = device.label || `Video device ${videoDevices.length + 1}`;
|
||||
const groupId = device.groupId;
|
||||
const videoDevice = { deviceId, label, kind, groupId };
|
||||
videoDevices.push(videoDevice);
|
||||
}
|
||||
return videoDevices;
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Let's you find a device using it's Id.
|
||||
*/
|
||||
static findDeviceById(deviceId) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
const devices = yield BrowserCodeReader.listVideoInputDevices();
|
||||
if (!devices) {
|
||||
return;
|
||||
}
|
||||
return devices.find((x) => x.deviceId === deviceId);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Unbinds a HTML video src property.
|
||||
*/
|
||||
static cleanVideoSource(videoElement) {
|
||||
if (!videoElement) {
|
||||
return;
|
||||
}
|
||||
// forgets about that element 😢
|
||||
try {
|
||||
videoElement.srcObject = null;
|
||||
}
|
||||
catch (err) {
|
||||
videoElement.src = '';
|
||||
}
|
||||
if (videoElement) {
|
||||
videoElement.removeAttribute('src');
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Stops all media streams that are created.
|
||||
*/
|
||||
static releaseAllStreams() {
|
||||
if (BrowserCodeReader.streamTracker.length !== 0) {
|
||||
// tslint:disable-next-line:no-console
|
||||
BrowserCodeReader.streamTracker.forEach((mediaStream) => {
|
||||
mediaStream.getTracks().forEach((track) => track.stop());
|
||||
});
|
||||
}
|
||||
BrowserCodeReader.streamTracker = [];
|
||||
}
|
||||
/**
|
||||
* Waits for a video to load and then hits play on it.
|
||||
* To accomplish that, it binds listeners and callbacks to the video element.
|
||||
*
|
||||
* @param element The video element.
|
||||
* @param callbackFn Callback invoked when the video is played.
|
||||
*/
|
||||
static playVideoOnLoadAsync(element, timeout) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
// if canplay was already fired, we won't know when to play, so just give it a try
|
||||
const isPlaying = yield BrowserCodeReader.tryPlayVideo(element);
|
||||
if (isPlaying) {
|
||||
return true;
|
||||
}
|
||||
return new Promise((resolve, reject) => {
|
||||
// waits 3 seconds or rejects.
|
||||
const timeoutId = setTimeout(() => {
|
||||
if (BrowserCodeReader.isVideoPlaying(element)) {
|
||||
// if video is playing then we had success, just ignore
|
||||
return;
|
||||
}
|
||||
reject(false);
|
||||
element.removeEventListener('canplay', videoCanPlayListener);
|
||||
}, timeout);
|
||||
/**
|
||||
* Should contain the current registered listener for video loaded-metadata,
|
||||
* used to unregister that listener when needed.
|
||||
*/
|
||||
const videoCanPlayListener = () => {
|
||||
BrowserCodeReader.tryPlayVideo(element).then((hasPlayed) => {
|
||||
clearTimeout(timeoutId);
|
||||
element.removeEventListener('canplay', videoCanPlayListener);
|
||||
resolve(hasPlayed);
|
||||
});
|
||||
};
|
||||
// both should be unregistered after called
|
||||
element.addEventListener('canplay', videoCanPlayListener);
|
||||
});
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Sets the new stream and request a new decoding-with-delay.
|
||||
*
|
||||
* @param stream The stream to be shown in the video element.
|
||||
* @param decodeFn A callback for the decode method.
|
||||
*/
|
||||
static attachStreamToVideo(stream, preview, previewPlayTimeout = 5000) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
const videoElement = BrowserCodeReader.prepareVideoElement(preview);
|
||||
BrowserCodeReader.addVideoSource(videoElement, stream);
|
||||
yield BrowserCodeReader.playVideoOnLoadAsync(videoElement, previewPlayTimeout);
|
||||
return videoElement;
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Returns a Promise that resolves when the given image element loads.
|
||||
*/
|
||||
static _waitImageLoad(element) {
|
||||
return new Promise((resolve, reject) => {
|
||||
const timeout = 10000;
|
||||
// waits 10 seconds or rejects.
|
||||
const timeoutId = setTimeout(() => {
|
||||
if (BrowserCodeReader.isImageLoaded(element)) {
|
||||
// if video is playing then we had success, just ignore
|
||||
return;
|
||||
}
|
||||
// removes the listener
|
||||
element.removeEventListener('load', imageLoadedListener);
|
||||
// rejects the load
|
||||
reject();
|
||||
}, timeout);
|
||||
const imageLoadedListener = () => {
|
||||
clearTimeout(timeoutId);
|
||||
// removes the listener
|
||||
element.removeEventListener('load', imageLoadedListener);
|
||||
// resolves the load
|
||||
resolve();
|
||||
};
|
||||
element.addEventListener('load', imageLoadedListener);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Checks if the `callbackFn` is defined, otherwise throws.
|
||||
*/
|
||||
static checkCallbackFnOrThrow(callbackFn) {
|
||||
if (!callbackFn) {
|
||||
throw new ArgumentException('`callbackFn` is a required parameter, you cannot capture results without it.');
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Standard method to dispose a media stream object.
|
||||
*/
|
||||
static disposeMediaStream(stream) {
|
||||
stream.getVideoTracks().forEach((x) => x.stop());
|
||||
stream = undefined;
|
||||
}
|
||||
/**
|
||||
* Gets the BinaryBitmap for ya! (and decodes it)
|
||||
*/
|
||||
decode(element) {
|
||||
// get binary bitmap for decode function
|
||||
const canvas = BrowserCodeReader.createCanvasFromMediaElement(element);
|
||||
return this.decodeFromCanvas(canvas);
|
||||
}
|
||||
/**
|
||||
* Call the encapsulated readers decode
|
||||
*/
|
||||
decodeBitmap(binaryBitmap) {
|
||||
return this.reader.decode(binaryBitmap, this.hints);
|
||||
}
|
||||
/**
|
||||
* Decodes some barcode from a canvas!
|
||||
*/
|
||||
decodeFromCanvas(canvas) {
|
||||
const binaryBitmap = BrowserCodeReader.createBinaryBitmapFromCanvas(canvas);
|
||||
return this.decodeBitmap(binaryBitmap);
|
||||
}
|
||||
/**
|
||||
* Decodes something from an image HTML element.
|
||||
*/
|
||||
decodeFromImageElement(source) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
if (!source) {
|
||||
throw new ArgumentException('An image element must be provided.');
|
||||
}
|
||||
const element = BrowserCodeReader.prepareImageElement(source);
|
||||
// onLoad will remove it's callback once done
|
||||
// we do not need to dispose or destroy the image
|
||||
// since it came from the user
|
||||
return yield this._decodeOnLoadImage(element);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Decodes an image from a URL.
|
||||
*/
|
||||
decodeFromImageUrl(url) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
if (!url) {
|
||||
throw new ArgumentException('An URL must be provided.');
|
||||
}
|
||||
const element = BrowserCodeReader.prepareImageElement();
|
||||
// loads the image.
|
||||
element.src = url;
|
||||
try {
|
||||
// it waits the task so we can destroy the created image after
|
||||
return yield this.decodeFromImageElement(element);
|
||||
}
|
||||
finally {
|
||||
// we created this element, so we destroy it
|
||||
BrowserCodeReader.destroyImageElement(element);
|
||||
}
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Continuously tries to decode the barcode from a stream obtained from the given constraints
|
||||
* while showing the video in the specified video element.
|
||||
*
|
||||
* @param {MediaStream} [constraints] the media stream constraints to get s valid media stream to decode from
|
||||
* @param {string|HTMLVideoElement} [previewElem] the video element in page where to show the video while
|
||||
* decoding. Can be either an element id or directly an HTMLVideoElement. Can be undefined, in
|
||||
* which case no video will be shown.
|
||||
*/
|
||||
decodeFromConstraints(constraints, previewElem, callbackFn) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
BrowserCodeReader.checkCallbackFnOrThrow(callbackFn);
|
||||
const stream = yield this.getUserMedia(constraints);
|
||||
try {
|
||||
return yield this.decodeFromStream(stream, previewElem, callbackFn);
|
||||
}
|
||||
catch (error) {
|
||||
BrowserCodeReader.disposeMediaStream(stream);
|
||||
throw error;
|
||||
}
|
||||
});
|
||||
}
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from a stream obtained from the given constraints
|
||||
* while showing the video in the specified video element.
|
||||
*
|
||||
* @param {MediaStream} [constraints] the media stream constraints to get s valid media stream to decode from
|
||||
* @param {string|HTMLVideoElement} [preview] the video element in page where to show the video
|
||||
* while decoding. Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeFromStream(stream, preview, callbackFn) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
BrowserCodeReader.checkCallbackFnOrThrow(callbackFn);
|
||||
const timeout = this.options.tryPlayVideoTimeout;
|
||||
const video = yield BrowserCodeReader.attachStreamToVideo(stream, preview, timeout);
|
||||
// IF we receive a stream from the user, it's not our job to dispose it
|
||||
const finalizeCallback = () => {
|
||||
// stops video tracks and releases the stream reference
|
||||
BrowserCodeReader.disposeMediaStream(stream);
|
||||
// this video was just a preview, so in order
|
||||
// to release the stream we gotta stop showing
|
||||
// it (the stream) in the video element
|
||||
BrowserCodeReader.cleanVideoSource(video);
|
||||
};
|
||||
const originalControls = this.scan(video, callbackFn, finalizeCallback);
|
||||
const videoTracks = stream.getVideoTracks();
|
||||
const controls = Object.assign(Object.assign({}, originalControls), { stop() {
|
||||
originalControls.stop();
|
||||
},
|
||||
streamVideoConstraintsApply(constraints, trackFilter) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
const tracks = trackFilter ? videoTracks.filter(trackFilter) : videoTracks;
|
||||
for (const track of tracks) {
|
||||
yield track.applyConstraints(constraints);
|
||||
}
|
||||
});
|
||||
},
|
||||
streamVideoConstraintsGet(trackFilter) {
|
||||
return videoTracks.find(trackFilter).getConstraints();
|
||||
},
|
||||
streamVideoSettingsGet(trackFilter) {
|
||||
return videoTracks.find(trackFilter).getSettings();
|
||||
},
|
||||
streamVideoCapabilitiesGet(trackFilter) {
|
||||
return videoTracks.find(trackFilter).getCapabilities();
|
||||
} });
|
||||
const isTorchAvailable = BrowserCodeReader.mediaStreamIsTorchCompatible(stream);
|
||||
if (isTorchAvailable) {
|
||||
const torchTrack = videoTracks === null || videoTracks === void 0 ? void 0 : videoTracks.find((t) => BrowserCodeReader.mediaStreamIsTorchCompatibleTrack(t));
|
||||
const switchTorch = (onOff) => __awaiter(this, void 0, void 0, function* () {
|
||||
yield BrowserCodeReader.mediaStreamSetTorch(torchTrack, onOff);
|
||||
});
|
||||
controls.switchTorch = switchTorch;
|
||||
controls.stop = () => __awaiter(this, void 0, void 0, function* () {
|
||||
originalControls.stop();
|
||||
yield switchTorch(false);
|
||||
});
|
||||
}
|
||||
return controls;
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Continuously tries to decode the barcode from the device specified by device while showing
|
||||
* the video in the specified video element.
|
||||
*
|
||||
* @param {string|null} [deviceId] the id of one of the devices obtained after calling
|
||||
* getVideoInputDevices. Can be undefined, in this case it will decode from one of the
|
||||
* available devices, preferring the main camera (environment facing) if available.
|
||||
* @param {string|HTMLVideoElement|null} [video] the video element in page where to show the video
|
||||
* while decoding. Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeFromVideoDevice(deviceId, previewElem, callbackFn) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
BrowserCodeReader.checkCallbackFnOrThrow(callbackFn);
|
||||
let videoConstraints;
|
||||
if (!deviceId) {
|
||||
videoConstraints = { facingMode: 'environment' };
|
||||
}
|
||||
else {
|
||||
videoConstraints = { deviceId: { exact: deviceId } };
|
||||
}
|
||||
const constraints = { video: videoConstraints };
|
||||
return yield this.decodeFromConstraints(constraints, previewElem, callbackFn);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Decodes something from an image HTML element.
|
||||
*/
|
||||
decodeFromVideoElement(source, callbackFn) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
BrowserCodeReader.checkCallbackFnOrThrow(callbackFn);
|
||||
if (!source) {
|
||||
throw new ArgumentException('A video element must be provided.');
|
||||
}
|
||||
// we do not create a video element
|
||||
const element = BrowserCodeReader.prepareVideoElement(source);
|
||||
const timeout = this.options.tryPlayVideoTimeout;
|
||||
// plays the video
|
||||
yield BrowserCodeReader.playVideoOnLoadAsync(element, timeout);
|
||||
// starts decoding after played the video
|
||||
return this.scan(element, callbackFn);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Decodes a video from a URL until it ends.
|
||||
*/
|
||||
decodeFromVideoUrl(url, callbackFn) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
BrowserCodeReader.checkCallbackFnOrThrow(callbackFn);
|
||||
if (!url) {
|
||||
throw new ArgumentException('An URL must be provided.');
|
||||
}
|
||||
// creates a new element
|
||||
const element = BrowserCodeReader.prepareVideoElement();
|
||||
// starts loading the video
|
||||
element.src = url;
|
||||
const finalizeCallback = () => {
|
||||
// dispose created video element
|
||||
BrowserCodeReader.cleanVideoSource(element);
|
||||
};
|
||||
const timeout = this.options.tryPlayVideoTimeout;
|
||||
// plays the video
|
||||
yield BrowserCodeReader.playVideoOnLoadAsync(element, timeout);
|
||||
// starts decoding after played the video
|
||||
const controls = this.scan(element, callbackFn, finalizeCallback);
|
||||
return controls;
|
||||
});
|
||||
}
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from a stream obtained from the given
|
||||
* constraints while showing the video in the specified video element.
|
||||
*
|
||||
* @param constraints the media stream constraints to get s valid media stream to decode from
|
||||
* @param videoSource the video element in page where to show the video while decoding.
|
||||
* Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
* The decoding result.
|
||||
*/
|
||||
decodeOnceFromConstraints(constraints, videoSource) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
const stream = yield this.getUserMedia(constraints);
|
||||
return yield this.decodeOnceFromStream(stream, videoSource);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from a stream obtained from the given
|
||||
* constraints while showing the video in the specified video element.
|
||||
*
|
||||
* @param {MediaStream} [constraints] the media stream constraints to get s valid media stream to decode from
|
||||
* @param {string|HTMLVideoElement} [video] the video element in page where to show the video while decoding.
|
||||
* Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeOnceFromStream(stream, preview) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
const receivedPreview = Boolean(preview);
|
||||
const video = yield BrowserCodeReader.attachStreamToVideo(stream, preview);
|
||||
try {
|
||||
const result = yield this.scanOneResult(video);
|
||||
return result;
|
||||
}
|
||||
finally {
|
||||
if (!receivedPreview) {
|
||||
BrowserCodeReader.cleanVideoSource(video);
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
/**
|
||||
* In one attempt, tries to decode the barcode from the device specified by deviceId
|
||||
* while showing the video in the specified video element.
|
||||
*
|
||||
* @param deviceId the id of one of the devices obtained after calling getVideoInputDevices.
|
||||
* Can be undefined, in this case it will decode from one of the available devices,
|
||||
* preferring the main camera (environment facing) if available.
|
||||
* @param videoSource the video element in page where to show the video while decoding.
|
||||
* Can be either an element id or directly an HTMLVideoElement. Can be undefined,
|
||||
* in which case no video will be shown.
|
||||
*/
|
||||
decodeOnceFromVideoDevice(deviceId, videoSource) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
let videoConstraints;
|
||||
if (!deviceId) {
|
||||
videoConstraints = { facingMode: 'environment' };
|
||||
}
|
||||
else {
|
||||
videoConstraints = { deviceId: { exact: deviceId } };
|
||||
}
|
||||
const constraints = { video: videoConstraints };
|
||||
return yield this.decodeOnceFromConstraints(constraints, videoSource);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Decodes something from an image HTML element.
|
||||
*/
|
||||
decodeOnceFromVideoElement(source) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
if (!source) {
|
||||
throw new ArgumentException('A video element must be provided.');
|
||||
}
|
||||
// we do not create a video element
|
||||
const element = BrowserCodeReader.prepareVideoElement(source);
|
||||
const timeout = this.options.tryPlayVideoTimeout;
|
||||
// plays the video
|
||||
yield BrowserCodeReader.playVideoOnLoadAsync(element, timeout);
|
||||
// starts decoding after played the video
|
||||
return yield this.scanOneResult(element);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Decodes a video from a URL.
|
||||
*/
|
||||
decodeOnceFromVideoUrl(url) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
if (!url) {
|
||||
throw new ArgumentException('An URL must be provided.');
|
||||
}
|
||||
// creates a new element
|
||||
const element = BrowserCodeReader.prepareVideoElement();
|
||||
// starts loading the video
|
||||
element.src = url;
|
||||
const task = this.decodeOnceFromVideoElement(element);
|
||||
try {
|
||||
// it waits the task so we can destroy the created image after
|
||||
return yield task;
|
||||
}
|
||||
finally {
|
||||
// we created this element, so we destroy it
|
||||
BrowserCodeReader.cleanVideoSource(element);
|
||||
}
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Tries to decode from the video input until it finds some value.
|
||||
*/
|
||||
scanOneResult(element, retryIfNotFound = true, retryIfChecksumError = true, retryIfFormatError = true) {
|
||||
return new Promise((resolve, reject) => {
|
||||
// reuses the scan API, but returns at the first successful result
|
||||
this.scan(element, (result, error, controls) => {
|
||||
if (result) {
|
||||
// good result, returning
|
||||
resolve(result);
|
||||
controls.stop();
|
||||
return;
|
||||
}
|
||||
if (error) {
|
||||
// checks if it should retry
|
||||
if (error instanceof NotFoundException && retryIfNotFound) {
|
||||
return;
|
||||
}
|
||||
if (error instanceof ChecksumException && retryIfChecksumError) {
|
||||
return;
|
||||
}
|
||||
if (error instanceof FormatException && retryIfFormatError) {
|
||||
return;
|
||||
}
|
||||
// not re-trying
|
||||
controls.stop(); // stops scan loop
|
||||
reject(error); // returns the error
|
||||
}
|
||||
});
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Continuously decodes from video input.
|
||||
*
|
||||
* @param element HTML element to scan/decode from. It will not be disposed or destroyed.
|
||||
* @param callbackFn Called after every scan attempt, being it successful or errored.
|
||||
* @param finalizeCallback Called after scan process reaches the end or stop is called.
|
||||
*/
|
||||
scan(element, callbackFn, finalizeCallback) {
|
||||
BrowserCodeReader.checkCallbackFnOrThrow(callbackFn);
|
||||
/**
|
||||
* The HTML canvas element, used to draw the video or image's frame for decoding.
|
||||
*/
|
||||
let captureCanvas = BrowserCodeReader.createCaptureCanvas(element);
|
||||
/**
|
||||
* The HTML canvas element context.
|
||||
*/
|
||||
let captureCanvasContext;
|
||||
try {
|
||||
captureCanvasContext = captureCanvas.getContext('2d', { willReadFrequently: true });
|
||||
}
|
||||
catch (e) {
|
||||
captureCanvasContext = captureCanvas.getContext('2d');
|
||||
}
|
||||
// cannot proceed w/o this
|
||||
if (!captureCanvasContext) {
|
||||
throw new Error('Couldn\'t create canvas for visual element scan.');
|
||||
}
|
||||
const disposeCanvas = () => {
|
||||
captureCanvasContext = undefined;
|
||||
captureCanvas = undefined;
|
||||
};
|
||||
let stopScan = false;
|
||||
let lastTimeoutId;
|
||||
// can be called to break the scan loop
|
||||
const stop = () => {
|
||||
stopScan = true;
|
||||
clearTimeout(lastTimeoutId);
|
||||
disposeCanvas();
|
||||
if (finalizeCallback) {
|
||||
finalizeCallback();
|
||||
}
|
||||
};
|
||||
// created for extensibility
|
||||
const controls = { stop };
|
||||
// this async loop allows infinite (or almost? maybe) scans
|
||||
const loop = () => {
|
||||
if (stopScan) {
|
||||
// no need to clear timeouts as none was create yet in this scope.
|
||||
return;
|
||||
}
|
||||
try {
|
||||
BrowserCodeReader.drawImageOnCanvas(captureCanvasContext, element);
|
||||
const result = this.decodeFromCanvas(captureCanvas);
|
||||
callbackFn(result, undefined, controls);
|
||||
lastTimeoutId = setTimeout(loop, this.options.delayBetweenScanSuccess);
|
||||
}
|
||||
catch (error) {
|
||||
callbackFn(undefined, error, controls);
|
||||
const isChecksumError = error instanceof ChecksumException;
|
||||
const isFormatError = error instanceof FormatException;
|
||||
const isNotFound = error instanceof NotFoundException;
|
||||
if (isChecksumError || isFormatError || isNotFound) {
|
||||
// trying again
|
||||
lastTimeoutId = setTimeout(loop, this.options.delayBetweenScanAttempts);
|
||||
return;
|
||||
}
|
||||
// not trying again
|
||||
disposeCanvas();
|
||||
if (finalizeCallback) {
|
||||
finalizeCallback(error);
|
||||
}
|
||||
}
|
||||
};
|
||||
// starts the async loop
|
||||
loop();
|
||||
return controls;
|
||||
}
|
||||
/**
|
||||
* Waits for the image to load and then tries to decode it.
|
||||
*/
|
||||
_decodeOnLoadImage(element) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
const isImageLoaded = BrowserCodeReader.isImageLoaded(element);
|
||||
if (!isImageLoaded) {
|
||||
yield BrowserCodeReader._waitImageLoad(element);
|
||||
}
|
||||
return this.decode(element);
|
||||
});
|
||||
}
|
||||
/**
|
||||
* Get MediaStream from browser to be used.
|
||||
* @param constraints constraints the media stream constraints to get s valid media stream to decode from.
|
||||
* @private For private use.
|
||||
*/
|
||||
getUserMedia(constraints) {
|
||||
return __awaiter(this, void 0, void 0, function* () {
|
||||
const stream = yield navigator.mediaDevices.getUserMedia(constraints);
|
||||
BrowserCodeReader.streamTracker.push(stream);
|
||||
return stream;
|
||||
});
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Keeps track to created media streams.
|
||||
* @private there is no need this array to be accessible from outside.
|
||||
*/
|
||||
BrowserCodeReader.streamTracker = [];
|
||||
//# sourceMappingURL=BrowserCodeReader.js.map
|
||||
+1
File diff suppressed because one or more lines are too long
+12
@@ -0,0 +1,12 @@
|
||||
import { DecodeHintType } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
|
||||
/**
|
||||
* QR Code reader to use from browser.
|
||||
*/
|
||||
export declare class BrowserDatamatrixCodeReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserQRCodeReader.
|
||||
*/
|
||||
constructor(hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
|
||||
}
|
||||
+14
@@ -0,0 +1,14 @@
|
||||
import { DataMatrixReader } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
/**
|
||||
* QR Code reader to use from browser.
|
||||
*/
|
||||
export class BrowserDatamatrixCodeReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserQRCodeReader.
|
||||
*/
|
||||
constructor(hints, options) {
|
||||
super(new DataMatrixReader(), hints, options);
|
||||
}
|
||||
}
|
||||
//# sourceMappingURL=BrowserDatamatrixCodeReader.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"BrowserDatamatrixCodeReader.js","sourceRoot":"","sources":["../../../src/readers/BrowserDatamatrixCodeReader.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,gBAAgB,EAAkB,MAAM,gBAAgB,CAAC;AAClE,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAGxD;;GAEG;AACH,MAAM,OAAO,2BAA4B,SAAQ,iBAAiB;IAChE;;OAEG;IACH,YACE,KAAgC,EAChC,OAAmC;QAEnC,KAAK,CAAC,IAAI,gBAAgB,EAAE,EAAE,KAAK,EAAE,OAAO,CAAC,CAAC;IAChD,CAAC;CACF"}
|
||||
+14
@@ -0,0 +1,14 @@
|
||||
import { DecodeHintType } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
|
||||
/**
|
||||
* Reader to be used for any One Dimension type barcode.
|
||||
*/
|
||||
export declare class BrowserMultiFormatOneDReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserBarcodeReader.
|
||||
* @param {Map<DecodeHintType, any>} hints?
|
||||
* @param options
|
||||
*/
|
||||
constructor(hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
|
||||
}
|
||||
+16
@@ -0,0 +1,16 @@
|
||||
import { MultiFormatOneDReader } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
/**
|
||||
* Reader to be used for any One Dimension type barcode.
|
||||
*/
|
||||
export class BrowserMultiFormatOneDReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserBarcodeReader.
|
||||
* @param {Map<DecodeHintType, any>} hints?
|
||||
* @param options
|
||||
*/
|
||||
constructor(hints, options) {
|
||||
super(new MultiFormatOneDReader(hints), hints, options);
|
||||
}
|
||||
}
|
||||
//# sourceMappingURL=BrowserMultiFormatOneDReader.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"BrowserMultiFormatOneDReader.js","sourceRoot":"","sources":["../../../src/readers/BrowserMultiFormatOneDReader.ts"],"names":[],"mappings":"AAAA,OAAO,EAAkB,qBAAqB,EAAE,MAAM,gBAAgB,CAAC;AACvE,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAGxD;;GAEG;AACH,MAAM,OAAO,4BAA6B,SAAQ,iBAAiB;IACjE;;;;OAIG;IACH,YAAmB,KAAgC,EAAE,OAAmC;QACtF,KAAK,CAAC,IAAI,qBAAqB,CAAC,KAAK,CAAC,EAAE,KAAK,EAAE,OAAO,CAAC,CAAC;IAC1D,CAAC;CACF"}
|
||||
+17
@@ -0,0 +1,17 @@
|
||||
import { BarcodeFormat, BinaryBitmap, DecodeHintType, MultiFormatReader, Result } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
|
||||
export declare class BrowserMultiFormatReader extends BrowserCodeReader {
|
||||
set possibleFormats(formats: BarcodeFormat[]);
|
||||
protected readonly reader: MultiFormatReader;
|
||||
constructor(hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
|
||||
/**
|
||||
* Overwrite decodeBitmap to call decodeWithState, which will pay
|
||||
* attention to the hints set in the constructor function
|
||||
*/
|
||||
decodeBitmap(binaryBitmap: BinaryBitmap): Result;
|
||||
/**
|
||||
* Allows to change hints in runtime.
|
||||
*/
|
||||
setHints(hints: Map<DecodeHintType, any>): void;
|
||||
}
|
||||
+29
@@ -0,0 +1,29 @@
|
||||
import { DecodeHintType, MultiFormatReader, } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
export class BrowserMultiFormatReader extends BrowserCodeReader {
|
||||
constructor(hints, options) {
|
||||
const reader = new MultiFormatReader();
|
||||
reader.setHints(hints);
|
||||
super(reader, hints, options);
|
||||
this.reader = reader;
|
||||
}
|
||||
set possibleFormats(formats) {
|
||||
this.hints.set(DecodeHintType.POSSIBLE_FORMATS, formats);
|
||||
this.reader.setHints(this.hints);
|
||||
}
|
||||
/**
|
||||
* Overwrite decodeBitmap to call decodeWithState, which will pay
|
||||
* attention to the hints set in the constructor function
|
||||
*/
|
||||
decodeBitmap(binaryBitmap) {
|
||||
return this.reader.decodeWithState(binaryBitmap);
|
||||
}
|
||||
/**
|
||||
* Allows to change hints in runtime.
|
||||
*/
|
||||
setHints(hints) {
|
||||
this.hints = hints;
|
||||
this.reader.setHints(this.hints);
|
||||
}
|
||||
}
|
||||
//# sourceMappingURL=BrowserMultiFormatReader.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"BrowserMultiFormatReader.js","sourceRoot":"","sources":["../../../src/readers/BrowserMultiFormatReader.ts"],"names":[],"mappings":"AAAA,OAAO,EAGL,cAAc,EACd,iBAAiB,GAElB,MAAM,gBAAgB,CAAC;AACxB,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAGxD,MAAM,OAAO,wBAAyB,SAAQ,iBAAiB;IAS7D,YACE,KAAgC,EAChC,OAAmC;QAEnC,MAAM,MAAM,GAAG,IAAI,iBAAiB,EAAE,CAAC;QACvC,MAAM,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;QACvB,KAAK,CAAC,MAAM,EAAE,KAAK,EAAE,OAAO,CAAC,CAAC;QAC9B,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;IACvB,CAAC;IAfD,IAAI,eAAe,CAAC,OAAwB;QAC1C,IAAI,CAAC,KAAK,CAAC,GAAG,CAAC,cAAc,CAAC,gBAAgB,EAAE,OAAO,CAAC,CAAC;QACzD,IAAI,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;IACnC,CAAC;IAcD;;;OAGG;IACI,YAAY,CAAC,YAA0B;QAC5C,OAAO,IAAI,CAAC,MAAM,CAAC,eAAe,CAAC,YAAY,CAAC,CAAC;IACnD,CAAC;IAED;;OAEG;IACI,QAAQ,CAAC,KAA+B;QAC7C,IAAI,CAAC,KAAK,GAAG,KAAK,CAAC;QACnB,IAAI,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;IACnC,CAAC;CACF"}
|
||||
+12
@@ -0,0 +1,12 @@
|
||||
import { DecodeHintType } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
|
||||
/**
|
||||
* QR Code reader to use from browser.
|
||||
*/
|
||||
export declare class BrowserPDF417Reader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserPDF417Reader.
|
||||
*/
|
||||
constructor(hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
|
||||
}
|
||||
+14
@@ -0,0 +1,14 @@
|
||||
import { PDF417Reader } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
/**
|
||||
* QR Code reader to use from browser.
|
||||
*/
|
||||
export class BrowserPDF417Reader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserPDF417Reader.
|
||||
*/
|
||||
constructor(hints, options) {
|
||||
super(new PDF417Reader(), hints, options);
|
||||
}
|
||||
}
|
||||
//# sourceMappingURL=BrowserPDF417Reader.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"BrowserPDF417Reader.js","sourceRoot":"","sources":["../../../src/readers/BrowserPDF417Reader.ts"],"names":[],"mappings":"AAAA,OAAO,EAAkB,YAAY,EAAE,MAAM,gBAAgB,CAAC;AAC9D,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAGxD;;GAEG;AACH,MAAM,OAAO,mBAAoB,SAAQ,iBAAiB;IACxD;;OAEG;IACH,YACE,KAAgC,EAChC,OAAmC;QAEnC,KAAK,CAAC,IAAI,YAAY,EAAE,EAAE,KAAK,EAAE,OAAO,CAAC,CAAC;IAC5C,CAAC;CACF"}
|
||||
+12
@@ -0,0 +1,12 @@
|
||||
import { DecodeHintType } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
|
||||
/**
|
||||
* QR Code reader to use from browser.
|
||||
*/
|
||||
export declare class BrowserQRCodeReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserQRCodeReader.
|
||||
*/
|
||||
constructor(hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
|
||||
}
|
||||
+14
@@ -0,0 +1,14 @@
|
||||
import { QRCodeReader } from '@zxing/library';
|
||||
import { BrowserCodeReader } from './BrowserCodeReader';
|
||||
/**
|
||||
* QR Code reader to use from browser.
|
||||
*/
|
||||
export class BrowserQRCodeReader extends BrowserCodeReader {
|
||||
/**
|
||||
* Creates an instance of BrowserQRCodeReader.
|
||||
*/
|
||||
constructor(hints, options) {
|
||||
super(new QRCodeReader(), hints, options);
|
||||
}
|
||||
}
|
||||
//# sourceMappingURL=BrowserQRCodeReader.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"BrowserQRCodeReader.js","sourceRoot":"","sources":["../../../src/readers/BrowserQRCodeReader.ts"],"names":[],"mappings":"AAAA,OAAO,EAAkB,YAAY,EAAE,MAAM,gBAAgB,CAAC;AAC9D,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAGxD;;GAEG;AACH,MAAM,OAAO,mBAAoB,SAAQ,iBAAiB;IACxD;;OAEG;IACH,YACE,KAAgC,EAChC,OAAmC;QAEnC,KAAK,CAAC,IAAI,YAAY,EAAE,EAAE,KAAK,EAAE,OAAO,CAAC,CAAC;IAC5C,CAAC;CACF"}
|
||||
+8
@@ -0,0 +1,8 @@
|
||||
export interface IBrowserCodeReaderOptions {
|
||||
/** Delay time between subsequent successful decode results. */
|
||||
delayBetweenScanSuccess?: number;
|
||||
/** Delay time between decode attempts made by the scanner. */
|
||||
delayBetweenScanAttempts?: number;
|
||||
/** Timeout for waiting the video 'canplay' event. */
|
||||
tryPlayVideoTimeout?: number;
|
||||
}
|
||||
+2
@@ -0,0 +1,2 @@
|
||||
export {};
|
||||
//# sourceMappingURL=IBrowserCodeReaderOptions.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
{"version":3,"file":"IBrowserCodeReaderOptions.js","sourceRoot":"","sources":["../../../src/readers/IBrowserCodeReaderOptions.ts"],"names":[],"mappings":""}
|
||||
+47
@@ -0,0 +1,47 @@
|
||||
import { EncodeHintType } from '@zxing/library';
|
||||
declare abstract class BrowserCodeSvgWriter {
|
||||
/**
|
||||
* Default quiet zone in pixels.
|
||||
*/
|
||||
private static readonly QUIET_ZONE_SIZE;
|
||||
/**
|
||||
* SVG markup NameSpace
|
||||
*/
|
||||
private static readonly SVG_NS;
|
||||
/**
|
||||
* A HTML container element for the image.
|
||||
*/
|
||||
private containerElement;
|
||||
/**
|
||||
* Constructs. 😉
|
||||
*/
|
||||
constructor(containerElement: string | HTMLElement);
|
||||
/**
|
||||
* Writes the QR code to a SVG and renders it in the container.
|
||||
*/
|
||||
write(contents: string, width: number, height: number, hints?: Map<EncodeHintType, any>): SVGSVGElement;
|
||||
/**
|
||||
* Creates a SVG element.
|
||||
*/
|
||||
protected createSVGElement(w: number, h: number): SVGSVGElement;
|
||||
/**
|
||||
* Creates a SVG rect.
|
||||
*/
|
||||
protected createSvgPathPlaceholderElement(w: number, h: number): SVGPathElement;
|
||||
/**
|
||||
* Creates a SVG rect.
|
||||
*/
|
||||
protected createSvgRectElement(x: number, y: number, w: number, h: number): SVGRectElement;
|
||||
/**
|
||||
* Encodes the content to a Barcode type.
|
||||
*/
|
||||
private encode;
|
||||
/**
|
||||
* Renders the SVG in the container.
|
||||
*
|
||||
* @note the input matrix uses 0 == white, 1 == black. The output matrix
|
||||
* uses 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
|
||||
*/
|
||||
private renderResult;
|
||||
}
|
||||
export { BrowserCodeSvgWriter };
|
||||
+131
@@ -0,0 +1,131 @@
|
||||
import { EncodeHintType, IllegalArgumentException, IllegalStateException, QRCodeDecoderErrorCorrectionLevel, QRCodeEncoder, } from '@zxing/library';
|
||||
const svgNs = 'http://www.w3.org/2000/svg';
|
||||
/**/
|
||||
class BrowserCodeSvgWriter {
|
||||
/**
|
||||
* Constructs. 😉
|
||||
*/
|
||||
constructor(containerElement) {
|
||||
if (typeof containerElement === 'string') {
|
||||
const container = document.getElementById(containerElement);
|
||||
if (!container) {
|
||||
throw new Error(`Could not find a Container element with '${containerElement}'.`);
|
||||
}
|
||||
this.containerElement = container;
|
||||
}
|
||||
else {
|
||||
this.containerElement = containerElement;
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Writes the QR code to a SVG and renders it in the container.
|
||||
*/
|
||||
write(contents, width, height, hints) {
|
||||
if (contents.length === 0) {
|
||||
throw new IllegalArgumentException('Found empty contents');
|
||||
}
|
||||
if (width < 0 || height < 0) {
|
||||
throw new IllegalArgumentException('Requested dimensions are too small: ' + width + 'x' + height);
|
||||
}
|
||||
const quietZone = hints && hints.get(EncodeHintType.MARGIN) !== undefined
|
||||
? Number.parseInt(hints.get(EncodeHintType.MARGIN).toString(), 10)
|
||||
: BrowserCodeSvgWriter.QUIET_ZONE_SIZE;
|
||||
const code = this.encode(hints, contents);
|
||||
return this.renderResult(code, width, height, quietZone);
|
||||
}
|
||||
/**
|
||||
* Creates a SVG element.
|
||||
*/
|
||||
createSVGElement(w, h) {
|
||||
const el = document.createElementNS(BrowserCodeSvgWriter.SVG_NS, 'svg');
|
||||
el.setAttributeNS(svgNs, 'width', h.toString());
|
||||
el.setAttributeNS(svgNs, 'height', w.toString());
|
||||
return el;
|
||||
}
|
||||
/**
|
||||
* Creates a SVG rect.
|
||||
*/
|
||||
createSvgPathPlaceholderElement(w, h) {
|
||||
const el = document.createElementNS(BrowserCodeSvgWriter.SVG_NS, 'path');
|
||||
el.setAttributeNS(svgNs, 'd', `M0 0h${w}v${h}H0z`);
|
||||
el.setAttributeNS(svgNs, 'fill', 'none');
|
||||
return el;
|
||||
}
|
||||
/**
|
||||
* Creates a SVG rect.
|
||||
*/
|
||||
createSvgRectElement(x, y, w, h) {
|
||||
const el = document.createElementNS(BrowserCodeSvgWriter.SVG_NS, 'rect');
|
||||
el.setAttributeNS(svgNs, 'x', x.toString());
|
||||
el.setAttributeNS(svgNs, 'y', y.toString());
|
||||
el.setAttributeNS(svgNs, 'height', w.toString());
|
||||
el.setAttributeNS(svgNs, 'width', h.toString());
|
||||
el.setAttributeNS(svgNs, 'fill', '#000000');
|
||||
return el;
|
||||
}
|
||||
/**
|
||||
* Encodes the content to a Barcode type.
|
||||
*/
|
||||
encode(hints, contents) {
|
||||
let errorCorrectionLevel = QRCodeDecoderErrorCorrectionLevel.L;
|
||||
if (hints && hints.get(EncodeHintType.ERROR_CORRECTION) !== undefined) {
|
||||
const correctionStr = hints.get(EncodeHintType.ERROR_CORRECTION).toString();
|
||||
errorCorrectionLevel = QRCodeDecoderErrorCorrectionLevel.fromString(correctionStr);
|
||||
}
|
||||
const code = QRCodeEncoder.encode(contents, errorCorrectionLevel, hints);
|
||||
return code;
|
||||
}
|
||||
/**
|
||||
* Renders the SVG in the container.
|
||||
*
|
||||
* @note the input matrix uses 0 == white, 1 == black. The output matrix
|
||||
* uses 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
|
||||
*/
|
||||
renderResult(code, width /*int*/, height /*int*/, quietZone /*int*/) {
|
||||
// if (this.format && format != this.format) {
|
||||
// throw new IllegalArgumentException("Can only encode QR_CODE, but got " + format)
|
||||
// }
|
||||
const input = code.getMatrix();
|
||||
if (input === null) {
|
||||
throw new IllegalStateException();
|
||||
}
|
||||
const inputWidth = input.getWidth();
|
||||
const inputHeight = input.getHeight();
|
||||
const qrWidth = inputWidth + (quietZone * 2);
|
||||
const qrHeight = inputHeight + (quietZone * 2);
|
||||
const outputWidth = Math.max(width, qrWidth);
|
||||
const outputHeight = Math.max(height, qrHeight);
|
||||
const multiple = Math.min(Math.floor(outputWidth / qrWidth), Math.floor(outputHeight / qrHeight));
|
||||
// Padding includes both the quiet zone and the extra white pixels to accommodate the requested
|
||||
// dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
|
||||
// If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
|
||||
// handle all the padding from 100x100 (the actual QR) up to 200x160.
|
||||
const leftPadding = Math.floor((outputWidth - (inputWidth * multiple)) / 2);
|
||||
const topPadding = Math.floor((outputHeight - (inputHeight * multiple)) / 2);
|
||||
const svgElement = this.createSVGElement(outputWidth, outputHeight);
|
||||
const placeholder = this.createSvgPathPlaceholderElement(width, height);
|
||||
svgElement.appendChild(placeholder);
|
||||
this.containerElement.appendChild(svgElement);
|
||||
// 2D loop
|
||||
for (let inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
|
||||
// Write the contents of this row of the barcode
|
||||
for (let inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
|
||||
if (input.get(inputX, inputY) === 1) {
|
||||
const svgRectElement = this.createSvgRectElement(outputX, outputY, multiple, multiple);
|
||||
svgElement.appendChild(svgRectElement);
|
||||
}
|
||||
}
|
||||
}
|
||||
return svgElement;
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Default quiet zone in pixels.
|
||||
*/
|
||||
BrowserCodeSvgWriter.QUIET_ZONE_SIZE = 4;
|
||||
/**
|
||||
* SVG markup NameSpace
|
||||
*/
|
||||
BrowserCodeSvgWriter.SVG_NS = 'http://www.w3.org/2000/svg';
|
||||
export { BrowserCodeSvgWriter };
|
||||
//# sourceMappingURL=BrowserCodeSvgWriter.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
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|
||||
+39
@@ -0,0 +1,39 @@
|
||||
import { EncodeHintType } from '@zxing/library';
|
||||
declare class BrowserQRCodeSvgWriter {
|
||||
private static readonly QUIET_ZONE_SIZE;
|
||||
/**
|
||||
* Writes and renders a QRCode SVG element.
|
||||
*
|
||||
* @param contents
|
||||
* @param width
|
||||
* @param height
|
||||
* @param hints
|
||||
*/
|
||||
write(contents: string, width: number, height: number, hints?: Map<EncodeHintType, any>): SVGSVGElement;
|
||||
/**
|
||||
* Renders the result and then appends it to the DOM.
|
||||
*/
|
||||
writeToDom(containerElement: string | HTMLElement, contents: string, width: number, height: number, hints?: Map<EncodeHintType, any>): void;
|
||||
/**
|
||||
* Note that the input matrix uses 0 == white, 1 == black.
|
||||
* The output matrix uses 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
|
||||
*/
|
||||
private renderResult;
|
||||
/**
|
||||
* Creates a SVG element.
|
||||
*
|
||||
* @param w SVG's width attribute
|
||||
* @param h SVG's height attribute
|
||||
*/
|
||||
private createSVGElement;
|
||||
/**
|
||||
* Creates a SVG rect element.
|
||||
*
|
||||
* @param x Element's x coordinate
|
||||
* @param y Element's y coordinate
|
||||
* @param w Element's width attribute
|
||||
* @param h Element's height attribute
|
||||
*/
|
||||
private createSvgRectElement;
|
||||
}
|
||||
export { BrowserQRCodeSvgWriter };
|
||||
+122
@@ -0,0 +1,122 @@
|
||||
import { EncodeHintType, IllegalArgumentException, IllegalStateException, QRCodeDecoderErrorCorrectionLevel, QRCodeEncoder, } from '@zxing/library';
|
||||
const svgNs = 'http://www.w3.org/2000/svg';
|
||||
/**/
|
||||
class BrowserQRCodeSvgWriter {
|
||||
/**
|
||||
* Writes and renders a QRCode SVG element.
|
||||
*
|
||||
* @param contents
|
||||
* @param width
|
||||
* @param height
|
||||
* @param hints
|
||||
*/
|
||||
write(contents, width, height, hints) {
|
||||
if (contents.length === 0) {
|
||||
throw new IllegalArgumentException('Found empty contents');
|
||||
}
|
||||
// if (format != BarcodeFormat.QR_CODE) {
|
||||
// throw new IllegalArgumentException("Can only encode QR_CODE, but got " + format)
|
||||
// }
|
||||
if (width < 0 || height < 0) {
|
||||
throw new IllegalArgumentException('Requested dimensions are too small: ' + width + 'x' + height);
|
||||
}
|
||||
let errorCorrectionLevel = QRCodeDecoderErrorCorrectionLevel.L;
|
||||
let quietZone = BrowserQRCodeSvgWriter.QUIET_ZONE_SIZE;
|
||||
if (hints) {
|
||||
if (undefined !== hints.get(EncodeHintType.ERROR_CORRECTION)) {
|
||||
const correctionStr = hints.get(EncodeHintType.ERROR_CORRECTION).toString();
|
||||
errorCorrectionLevel = QRCodeDecoderErrorCorrectionLevel.fromString(correctionStr);
|
||||
}
|
||||
if (undefined !== hints.get(EncodeHintType.MARGIN)) {
|
||||
quietZone = Number.parseInt(hints.get(EncodeHintType.MARGIN).toString(), 10);
|
||||
}
|
||||
}
|
||||
const code = QRCodeEncoder.encode(contents, errorCorrectionLevel, hints);
|
||||
return this.renderResult(code, width, height, quietZone);
|
||||
}
|
||||
/**
|
||||
* Renders the result and then appends it to the DOM.
|
||||
*/
|
||||
writeToDom(containerElement, contents, width, height, hints) {
|
||||
if (typeof containerElement === 'string') {
|
||||
const targetEl = document.querySelector(containerElement);
|
||||
if (!targetEl) {
|
||||
throw new Error('Could no find the target HTML element.');
|
||||
}
|
||||
containerElement = targetEl;
|
||||
}
|
||||
const svgElement = this.write(contents, width, height, hints);
|
||||
if (containerElement instanceof HTMLElement) {
|
||||
containerElement.appendChild(svgElement);
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Note that the input matrix uses 0 == white, 1 == black.
|
||||
* The output matrix uses 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
|
||||
*/
|
||||
renderResult(code, width /*int*/, height /*int*/, quietZone /*int*/) {
|
||||
const input = code.getMatrix();
|
||||
if (input === null) {
|
||||
throw new IllegalStateException();
|
||||
}
|
||||
const inputWidth = input.getWidth();
|
||||
const inputHeight = input.getHeight();
|
||||
const qrWidth = inputWidth + (quietZone * 2);
|
||||
const qrHeight = inputHeight + (quietZone * 2);
|
||||
const outputWidth = Math.max(width, qrWidth);
|
||||
const outputHeight = Math.max(height, qrHeight);
|
||||
const multiple = Math.min(Math.floor(outputWidth / qrWidth), Math.floor(outputHeight / qrHeight));
|
||||
// Padding includes both the quiet zone and the extra white pixels to accommodate the requested
|
||||
// dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
|
||||
// If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
|
||||
// handle all the padding from 100x100 (the actual QR) up to 200x160.
|
||||
const leftPadding = Math.floor((outputWidth - (inputWidth * multiple)) / 2);
|
||||
const topPadding = Math.floor((outputHeight - (inputHeight * multiple)) / 2);
|
||||
const svgElement = this.createSVGElement(outputWidth, outputHeight);
|
||||
for (let inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
|
||||
// Write the contents of this row of the barcode
|
||||
for (let inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
|
||||
if (input.get(inputX, inputY) === 1) {
|
||||
const svgRectElement = this.createSvgRectElement(outputX, outputY, multiple, multiple);
|
||||
svgElement.appendChild(svgRectElement);
|
||||
}
|
||||
}
|
||||
}
|
||||
return svgElement;
|
||||
}
|
||||
/**
|
||||
* Creates a SVG element.
|
||||
*
|
||||
* @param w SVG's width attribute
|
||||
* @param h SVG's height attribute
|
||||
*/
|
||||
createSVGElement(w, h) {
|
||||
const svgElement = document.createElementNS(svgNs, 'svg');
|
||||
const width = w.toString();
|
||||
const height = h.toString();
|
||||
svgElement.setAttribute('height', height);
|
||||
svgElement.setAttribute('width', width);
|
||||
svgElement.setAttribute('viewBox', "0 0 " + width + " " + height);
|
||||
return svgElement;
|
||||
}
|
||||
/**
|
||||
* Creates a SVG rect element.
|
||||
*
|
||||
* @param x Element's x coordinate
|
||||
* @param y Element's y coordinate
|
||||
* @param w Element's width attribute
|
||||
* @param h Element's height attribute
|
||||
*/
|
||||
createSvgRectElement(x, y, w, h) {
|
||||
const rect = document.createElementNS(svgNs, 'rect');
|
||||
rect.setAttribute('x', x.toString());
|
||||
rect.setAttribute('y', y.toString());
|
||||
rect.setAttribute('height', w.toString());
|
||||
rect.setAttribute('width', h.toString());
|
||||
rect.setAttribute('fill', '#000000');
|
||||
return rect;
|
||||
}
|
||||
}
|
||||
BrowserQRCodeSvgWriter.QUIET_ZONE_SIZE = 4;
|
||||
export { BrowserQRCodeSvgWriter };
|
||||
//# sourceMappingURL=BrowserQRCodeSvgWriter.js.map
|
||||
+1
@@ -0,0 +1 @@
|
||||
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|
||||
Reference in New Issue
Block a user