react-native-qrcode-styled

react-native-qrcode-styled

Fully customizable QR Codes generator for React Native using react-native-svg

Installation

npm i react-native-svg react-native-qrcode-styled

or with yarn

yarn add react-native-svg react-native-qrcode-styled

If you use typescript, run:

yarn add -D @types/qrcode

Usage

Simple usage is:

import QRCodeStyled from 'react-native-qrcode-styled';

<QRCodeStyled
  data={'Simple QR Code'}
  style={{backgroundColor: 'white'}}
  padding={20}
  pieceSize={8}
/>

For more examples check out the Example app

Props

Name	Default	Type	Description
data	"I'm QR Code!"	string	Message for encoding. Can also be an array. More info HERE.
pieceSize	5	number	Size of each piece of the QR code
pieceScale	undefined	SvgProps['scale']	Scale of each piece of the QR code
pieceRotation	undefined	SvgProps['rotation']	Angle of rotation of each piece of the QR code (in degrees)
pieceCornerType	'rounded'	'rounded' | 'cut'	Type of piece corner
pieceBorderRadius	0	number | number[]	Border radius of all corners of each piece. Can also be an array to define different border radius for each corner (start from top-left corner)
pieceStroke	undefined	ColorValue	Border color of each piece
pieceStrokeWidth	undefined	number	Border with of each piece
pieceLiquidRadius	undefined	number	Level of liquid effect between pieces. If you have pieceBorderRadius set isPiecesGlued to true
isPiecesGlued	false	boolean	If true between pieces will be glue effect. You will see this if you have pieceBorderRadius > 0
outerEyesOptions	undefined	EyeOptions | AllEyesOptions	Configurations for outer eyes of QR code. If they defined, previous piece configurations won't be work
innerEyesOptions	undefined	EyeOptions | AllEyesOptions	The same as outerEyesOptions prop but for inner eyes
color	'black'	ColorValue	Color of QR code
gradient	undefined	GradientProps	Gradient of QR code. Can be two types: 'linear' | 'radial'. By default 'linear'
padding	undefined	number	Padding inside <Svg/> component from QR code
logo	undefined	LogoOptions	Configurations for logo. Support svg's <Image/> props
backgroundImage	undefined	svg's <Image/> props type	Background image for QR code
version	undefined	number	Description
maskPattern	undefined	number	Description
toSJISFunc	undefined	function	Description
errorCorrectionLevel	'M'	'L' | 'M' | 'Q' | 'H'	Description
renderCustomPieceItem	undefined	RenderCustomPieceItem	Render custom piece of QR code. It must return svg component. If it defined, previous piece and eyes configurations won't be work
renderBackground	undefined	(pieceSize: number, bitMatrix: number[][]) => SvgProps['children']	Ability to add any additional svg components behind qr code
children	undefined	(pieceSize: number, bitMatrix: number[][]) => SvgProps['children']	Ability to add any additional svg components as children
...rest <Svg/> props

Types

GradientProps

type GradientType = 'linear' | 'radial';

type LinearGradientProps = {
  colors?: ColorValue[];
  start?: [number, number]; // start point [x, y] (0 -> 0%, 1 -> 100%)
  end?: [number, number]; // end point [x, y] (0 -> 0%, 1 -> 100%)
  locations?: number[]; // list of colors positions (0 -> 0%, 1 -> 100%)
};

type RadialGradientProps = {
  colors?: ColorValue[];
  center?: [number, number]; // center point [x, y] (0 -> 0%, 1 -> 100%)
  radius?: [number, number]; // radiusXY [x, y] (0 -> 0%, 1 -> 100%)
  locations?: number[]; // list of colors positions (0 -> 0%, 1 -> 100%)
};

type GradientProps = {
  type?: GradientType;
  options?: LinearGradientProps | RadialGradientProps;
};

EyeOptions

type EyeOptions = {
  scale?: PathProps['scale']; // scaleXY | [scaleX, scaleY]
  rotation?: string | number;
  borderRadius?: number | number[];
  color?: ColorValue;
  gradient?: GradientProps;
  stroke?: ColorValue;
  strokeWidth?: number;
}

AllEyesOptions

type EyePosition = 'topLeft' | 'topRight' | 'bottomLeft';

type AllEyesOptions = { [K in EyePosition]?: EyeOptions }

RenderCustomPieceItem

type RenderCustomPieceItem = ({x, y, pieceSize, qrSize, bitMatrix}: {
  x: number;
  y: number;
  pieceSize: number;
  qrSize: number;
  bitMatrix: number[][];
}) => React.ReactElement | null;

LogoOptions

export type LogoArea = {
  x: number;
  y: number;
  width: number;
  height: number;
};

export type LogoOptions = {
  hidePieces?: boolean;
  padding?: number;
  scale?: number;
  onChange?: (logoArea?: LogoArea) => void;
} & SVGImageProps;

Troubleshooting

Gaps between pieces (only on Android)

If you'll see that gaps between pieces on Android, just scale pieces up a little bit:

<QRCodeStyled
  ...
  pieceScale={1.02} // or any between of 1.01 - 1.04
/>

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT

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Made with create-react-native-library