qr-code-generator-vue3

Vue3 QR Code Styling

JavaScript library for generating QR codes with a logo and styling.

this clone copy of https://qr-code-styling.com

If you have issues / suggestions / notes / questions, please open an issue or contact me. Let's create a cool library together.

Examples

Installation

npm install qr-code-generator-vue3 --save

QR Code Scanner

If you are looking for QR code reader, see qrcode-reader-vue3 project

npm install --save qrcode-reader-vue3

Usage

<template>
  <div>
  
   <QRCodeVue3
          value="Simple QR code"
        />

   <QRCodeVue3
          :width="200"
          :height="200"
          value="https://scholtz.sk"
          :qrOptions="{ typeNumber: 0, mode: 'Byte', errorCorrectionLevel: 'H' }"
          :imageOptions="{ hideBackgroundDots: true, imageSize: 0.4, margin: 0 }"
          :dotsOptions="{
            type: 'dots',
            color: '#26249a',
            gradient: {
              type: 'linear',
              rotation: 0,
              colorStops: [
                { offset: 0, color: '#26249a' },
                { offset: 1, color: '#26249a' },
              ],
            },
          }"
          :backgroundOptions="{ color: '#ffffff' }"
          :cornersSquareOptions="{ type: 'dot', color: '#000000' }"
          :cornersDotOptions="{ type: undefined, color: '#000000' }"
          fileExt="png"
          :download="true"
          myclass="my-qur"
          imgclass="img-qr"
          downloadButton="my-button"
          :downloadOptions="{ name: 'vqr', extension: 'png' }"
        />
  </div>
</template>

<script>
import QRCodeVue3 from "qrcode-vue3";

export default {
  name: 'QRCodeVue3Example',
  components: {
    QRCodeVue3
  },
}
</script>

API Documentation

VQRCodeStyling instance

new VQRCodeStyling(options) => VQRCodeStyling

Param	Type	Description
options	object	Init object

options structure

Property	Type	Default Value	Description
width	number	300	Size of canvas
height	number	300	Size of canvas
download	boolean	false	To endable download button
myclass	string	''	Image DIV class
imgclass	string	''	Image class
downloadButton	string	''	download button class
downloadOptions	object		download option name and extension
value	string		The date will be encoded to the QR code
image	string		The image will be copied to the center of the QR code
margin	number	0	Margin around canvas
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
cornersDotOptionsHelper	object		Dots in the corners styling options
backgroundOptions	object		QR background styling options

options.qrOptions structure

Property	Type	Default Value
typeNumber	number (0 - 40)	0
mode	string ('Numeric' 'Alphanumeric' 'Byte' 'Kanji')
errorCorrectionLevel	string ('L' 'M' 'Q' 'H')	'Q'

options.imageOptions structure

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	string('anonymous' 'use-credentials')		Set "anonymous" if you want to download QR code from other origins.

options.dotsOptions structure

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

options.backgroundOptions structure

Property	Type	Default Value
color	string	'#fff'
gradient	object

options.cornersSquareOptions structure

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

options.cornersDotOptions structure

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

Gradient structure

options.dotsOptions.gradient

options.backgroundOptions.gradient

options.cornersSquareOptions.gradient

options.cornersDotOptions.gradient

Property	Type	Default Value	Description
type	string ('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 structure

options.dotsOptions.gradient.colorStops[]

options.backgroundOptions.gradient.colorStops[]

options.cornersSquareOptions.gradient.colorStops[]

options.cornersDotOptions.gradient.colorStops[]

Property	Type	Default Value	Description
offset	number (0 - 1)		Position of color in gradient range
color	string		Color of stop in gradient range

VQRCodeStyling methods

VQRCodeStyling.append(container) => void

Param	Type	Description
container	DOM element	This container will be used for appending of the QR code

VQRCodeStyling.update(options) => void

Param	Type	Description
options	object	The same options as for initialization

VQRCodeStyling.download(downloadOptions) => void

Param	Type	Description
downloadOptions	object	Options with extension and name of file (not required)

downloadOptions structure

Property	Type	Default Value	Description
name	string	'qr'	Name of the downloaded file
extension	string ('png' 'jpeg' 'webp')	'png'	File extension

if any issue check

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License

MIT License. Copyright (c) 2021 Diadal Nig