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>

Multi input

<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!
        });
    }
}

Element reference

<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!
        });
    }
}

Element id

<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!
        });
    }
}

Using a template

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>

Using a frame

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

frameOptions 🛠️

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
(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

Component and Service 🛠️

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

Models in Config

Options

export declare type Options = {
    type?: DrawType;
    shape?: ShapeType;
    width?: number;
    height?: number;
    margin?: number;
    data?: string;
    image?: string;
    scale?: number;
    rotate?: number;
    template?: string;
    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

frameOptions

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[]	-

qrOptions

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

imageOptions

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.

dotsOptions

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

backgroundOptions

Property	Type	Default Value
color	string	#fff
gradient	object

cornersSquareOptions

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

cornersDotOptions

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

Gradient

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' }]

Gradient colorStops

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

Support versions
Angular 16	1.2.8
Angular 6	1.2.7

Author Information

Author Information
Author	DaiDH
Phone	+84845882882
Country	Vietnam

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MIT License. Copyright (c) 2021 DaiDH