ngx-qrcode-styling

This library is built for the purpose generating QR codes with a logo and styling.
Demo on the Github or Stackblitz or Codesandbox
Generating styled QRcodes Online

Installation

Install ngx-qrcode-styling from npm:

npm install ngx-qrcode-styling@<version> --save

Add wanted package to NgModule imports:

import { NgxQrcodeStylingModule } from 'ngx-qrcode-styling';

@NgModule({
    imports: [
        NgxQrcodeStylingModule
    ]
})

Add component to your page:

import { Options } from 'ngx-qrcode-styling';

export class AppComponent {
  public config: Options = {
    width: 300,
    height: 300,
    data: "https://www.facebook.com/",
    image: "https://upload.wikimedia.org/wikipedia/commons/5/51/Facebook_f_logo_%282019%29.svg",
    margin: 5,
    dotsOptions: {
      color: "#1977f3",
      type: "dots"
    },
    backgroundOptions: {
      color: "#ffffff",
    },
    imageOptions: {
      crossOrigin: "anonymous",
      margin: 0
    }
  };
}

<ngx-qrcode-styling [config]="config"></ngx-qrcode-styling>

<ngx-qrcode-styling
  #qrcode
  [config]="config" 
  [type]="'canvas'"
  [shape]="'square'"
  [width]="200"
  [height]="200"
  [margin]="5"
  [data]="'Angular QRCode'"
  [image]="'https://upload.wikimedia.org/wikipedia/commons/5/51/Facebook_f_logo_%282019%29.svg'">
</ngx-qrcode-styling>

import { NgxQrcodeStylingComponent, Options } from 'ngx-qrcode-styling';

export class AppComponent {
    @ViewChild('qrcode', { static: false }) public qrcode!: NgxQrcodeStylingComponent;

    onUpdate(): void {
        this.qrcode.update(this.qrcode.config, {
          // height: 300,
          // width: 300,
          frameOptions: {
            height: 600,
            width: 600,
          },
          ...
        }).subscribe((res) => {
          // TO DO something!
        });
    }
    
    onDownload(): void {
        this.qrcode.download("file-name.png").subscribe((res) => {
          // TO DO something!
        });
    }
}

<div #canvas></div>

import { NgxQrcodeStylingService, Options } from 'ngx-qrcode-styling';

export class AppComponent implements AfterViewInit {
    @ViewChild("canvas", { static: false }) canvas: ElementRef;
    public config: Options = {...};
    
    constructor(private qrcode: NgxQrcodeStylingService) {}

    ngAfterViewInit(): void {
        // Create QRCode by Service and ElementRef 
        this.qrcode.create(this.config, this.canvas.nativeElement).subscribe((res) => {
          // TO DO something!
        });
    }
}

<div id="canvas"></div>

import { NgxQrcodeStylingService, Options } from 'ngx-qrcode-styling';

export class AppComponent implements AfterViewInit {
    public config: Options = {...};
    
    constructor(private qrcode: NgxQrcodeStylingService) {}
   
    ngAfterViewInit(): void {
        // Create QRCode by Service and HTMLElement 
        this.qrcode.create(this.config, document.getElementById('canvas')).subscribe((res) => {
          // TO DO something!
        });
    }
}

import { Options } from 'ngx-qrcode-styling';

export class AppComponent {
    public config: Options = {
        template: 'bitcoin',
        ...
    }
}

Or

<ngx-qrcode-styling [template]="'bitcoin'" [data]="'ngx-qrcode-styling'"></ngx-qrcode-styling>

import { Options } from 'ngx-qrcode-styling';

export class AppComponent {
    public config: Options = {
        frameOptions: {
              style: 'F_036',
              width: 300,
              height: 300,
              x: 50,
              y: 50
        }
        ...
    }
}

Or

<ngx-qrcode-styling
  [template]="'bitcoin'"
  [data]="'ngx-qrcode-styling'"
  [width]="280"
  [height]="280"
  [image]="'https://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/BTC_Logo.svg/60px-BTC_Logo.svg.png'"
  [frameOptions]="{style: 'F_036', height: 300, width: 300, x: 60, y: 60}">
</ngx-qrcode-styling>

API Documentation

Input

Property |Type |Default Value|Description ----------------------------|-----------------------------------------------|-------------|----------------------------------------------------- (type) |canvas, svg |canvas |The type of the element that will be rendered (shape) |square, circle |square |The type of the element that will be rendered (width) |number |300 |Size of canvas (height) |number |300 |Size of canvas (margin) |number |0 |Margin around canvas (data) |string | |The date will be encoded to the QR code (image) |string | |The image will be copied to the center of the QR code (scale) |number |0 |Scale qrcode (rotate) |number |0 |Rotate qrcode (zIndex) |1, 2 |2 |QR position is before or after (template) |default, ocean, sunflower, luxury, bitcoin, starbucks, angular, facebook, beans, green, sky, mosaic, coffee, vintage, stamp, chess, jungle , arabic , tea , grape | default | The design of the element that will be rendered (frameOptions) |object | |Options will be passed to qrcode-generator lib (qrOptions) |object | |Options will be passed to qrcode-generator lib (imageOptions) |object | |Specific image options, details see below (dotsOptions) |object | |Dots styling options (cornersSquareOptions) |object | |Square in the corners styling options (backgroundOptions) |object | |QR background styling options

Event

| Field | Description | Type | Default | | --- | --- | --- | --- | | (create) | status | AsyncSubject | - | | (update) | status | AsyncSubject | - | | (download) | status | AsyncSubject | - |

Models in Config

export declare type Options = {
    type?: DrawType;
    shape?: ShapeType;
    width?: number;
    height?: number;
    margin?: number;
    data?: string;
    image?: string;
    scale?: number;
    rotate?: number;
    template?: string;
    zIndex?: 1 | 2;
    frameOptions?: {
        style?: string;
        height?: number;
        width?: number;
        x?: number;
        y?: number;
        texts?: UnknownObject[]; // SVG Attribute reference
        contents?: UnknownObject[]; // SVG Attribute reference
        containers?: UnknownObject[]; // SVG Attribute reference
    };
    qrOptions?: {
        typeNumber?: TypeNumber;
        mode?: Mode;
        errorCorrectionLevel?: ErrorCorrectionLevel;
    };
    imageOptions?: {
        hideBackgroundDots?: boolean;
        imageSize?: number;
        crossOrigin?: string;
        margin?: number;
    };
    dotsOptions?: {
        type?: DotType;
        color?: string;
        gradient?: Gradient;
    };
    cornersSquareOptions?: {
        type?: CornerSquareType;
        color?: string;
        gradient?: Gradient;
    };
    cornersDotOptions?: {
        type?: CornerDotType;
        color?: string;
        gradient?: Gradient;
    };
    backgroundOptions?: {
        round?: number;
        color?: string;
        gradient?: Gradient;
    };
};

Model Details

Property |Type |Default Value --------------------|--------------------------------------------------|------------- style |F_020, ... F_080, FE_001, ... FE_XXX |F_020 width |number(0 - max) |300 height |number(0 - max) |300 x |number(0 - max) |50 y |number(0 - max) |50 texts |UnknownObject[] | - contents |UnknownObject[] | - containers |UnknownObject[] | -

Property |Type |Default Value --------------------|--------------------------------------------------|------------- typeNumber |0,40 |0 mode |Numeric, Alphanumeric, Byte, Kanji | errorCorrectionLevel|L, M, Q, H |Q

Property |Type |Default Value|Description ------------------|---------------------------------------|-------------|------------------------------------------------------------------------------ hideBackgroundDots|boolean |true |Hide all dots covered by the image imageSize |number |0.4 |Coefficient of the image size. Not recommended to use ove 0.5. Lower is better margin |number |0 |Margin of the image in px crossOrigin |anonymous, use-credentials | |Set "anonymous" if you want to download QR code from other origins.

Property|Type |Default Value|Description --------|------------------------------------------------------------------------------|-------------|------------------- color |string |#000 |Color of QR dots gradient|object | |Gradient of QR dots type |rounded,dots, classy, classy-rounded, square, extra-rounded |square |Style of QR dots

Property|Type |Default Value --------|------|------------- color |string|#fff gradient|object|

Property|Type |Default Value|Description --------|-----------------------------------------|-------------|----------------- color |string | |Color of Corners Square gradient|object | |Gradient of Corners Square type |dot, square, extra-rounded | |Style of Corners Square

Property|Type |Default Value|Description --------|-------------------------|-------------|----------------- color |string | |Color of Corners Dot gradient|object | |Gradient of Corners Dot type |dot, square | |Style of Corners Dot

dotsOptions.gradient

backgroundOptions.gradient

cornersSquareOptions.gradient

cornersDotOptions.gradient

Property |Type |Default Value|Description ----------|----------------------------|-------------|--------------------------------------------------------- type |linear, radial |linear |Type of gradient spread rotation |number |0 |Rotation of gradient in radians (Math.PI === 180 degrees) colorStops|array of objects | |Gradient colors. Example [{ offset: 0, color: 'blue' }, { offset: 1, color: 'red' }]

dotsOptions.gradient.colorStops[]

backgroundOptions.gradient.colorStops[]

cornersSquareOptions.gradient.colorStops[]

cornersDotOptions.gradient.colorStops[]

Property|Type |Default Value|Description --------|----------------|-------------|----------------------------------- offset |0, 1 | |Position of color in gradient range color |string | |Color of stop in gradient range

Support versions

Author Information

To make this library more complete, please donate to me if you can!

Beerware License. Copyright (c) 2021 DaiDH