Class QRCodeCanvas

constructor

• new QRCodeCanvas(value, options?): QRCodeCanvas

• Parameters

  • value: string

  • options: Partial<OptionsType> = {}

  Returns QRCodeCanvas

bgColor

canvas

canvasContext

fgColor

scale

size

_clearCache

• _clearCache(): void

• Returns void

_drawImage

• _drawImage(qrCodeCanvasContext, pixelSize): null | true | Promise<unknown>

• Parameters

  • qrCodeCanvasContext: HTMLCanvasElement

  • pixelSize: number

  Returns null | true | Promise<unknown>

_getCanvasSize

• _getCanvasSize(): null | number

• Returns null | number

_getImageSource

• _getImageSource(imageConfig): null | HTMLCanvasElement | (new (width?, height?) => HTMLImageElement) | Promise<unknown>

• Parameters

  • imageConfig: ImageConfigType

  Returns null | HTMLCanvasElement | (new (width?, height?) => HTMLImageElement) | Promise<unknown>

draw

• draw(canvas?): null | HTMLCanvasElement | Promise<HTMLCanvasElement>

• Parameters

  • canvas: null | HTMLCanvasElement = null

  Returns null | HTMLCanvasElement | Promise<HTMLCanvasElement>

getCanvas

• getCanvas(): null | HTMLCanvasElement | Promise<unknown>

• Returns null | HTMLCanvasElement | Promise<unknown>

toDataUrl

• toDataUrl(type?, encoderOptions?): null | string | Promise<unknown>

• Parameters

  • type: string = 'image/png'

  • encoderOptions: number = 0.92

  Returns null | string | Promise<unknown>