import React from 'react';

/**
 * @license qrcode.react
 * Copyright (c) Paul O'Shannessy
 * SPDX-License-Identifier: ISC
 */

type ErrorCorrectionLevel = 'L' | 'M' | 'Q' | 'H';
type CrossOrigin = 'anonymous' | 'use-credentials' | '' | undefined;
type ImageSettings = {
    /**
     * The URI of the embedded image.
     */
    src: string;
    /**
     * The height, in pixels, of the image.
     */
    height: number;
    /**
     * The width, in pixels, of the image.
     */
    width: number;
    /**
     * Whether or not to "excavate" the modules around the embedded image. This
     * means that any modules the embedded image overlaps will use the background
     * color.
     */
    excavate: boolean;
    /**
     * The horiztonal offset of the embedded image, starting from the top left corner.
     * Will center if not specified.
     */
    x?: number;
    /**
     * The vertical offset of the embedded image, starting from the top left corner.
     * Will center if not specified.
     */
    y?: number;
    /**
     * The opacity of the embedded image in the range of 0-1.
     * @defaultValue 1
     */
    opacity?: number;
    /**
     * The cross-origin value to use when loading the image. This is used to
     * ensure compatibility with CORS, particularly when extracting image data
     * from QRCodeCanvas.
     * Note: `undefined` is treated differently than the seemingly equivalent
     * empty string. This is intended to align with HTML behavior where omitting
     * the attribute behaves differently than the empty string.
     */
    crossOrigin?: CrossOrigin;
};
type QRProps = {
    /**
     * The value to encode into the QR Code. An array of strings can be passed in
     * to represent multiple segments to further optimize the QR Code.
     */
    value: string | string[];
    /**
     * The size, in pixels, to render the QR Code.
     * @defaultValue 128
     */
    size?: number;
    /**
     * The Error Correction Level to use.
     * @see https://www.qrcode.com/en/about/error_correction.html
     * @defaultValue L
     */
    level?: ErrorCorrectionLevel;
    /**
     * The background color used to render the QR Code.
     * @see https://developer.mozilla.org/en-US/docs/Web/CSS/color_value
     * @defaultValue #FFFFFF
     */
    bgColor?: string;
    /**
     * The foregtound color used to render the QR Code.
     * @see https://developer.mozilla.org/en-US/docs/Web/CSS/color_value
     * @defaultValue #000000
     */
    fgColor?: string;
    /**
     * Whether or not a margin of 4 modules should be rendered as a part of the
     * QR Code.
     * @deprecated Use `marginSize` instead.
     * @defaultValue false
     */
    includeMargin?: boolean;
    /**
     * The number of _modules_ to use for margin. The QR Code specification
     * requires `4`, however you can specify any number. Values will be turned to
     * integers with `Math.floor`. Overrides `includeMargin` when both are specified.
     * @defaultValue 0
     */
    marginSize?: number;
    /**
     * The title to assign to the QR Code. Used for accessibility reasons.
     */
    title?: string;
    /**
     * The minimum version used when encoding the QR Code. Valid values are 1-40
     * with higher values resulting in more complex QR Codes. The optimal
     * (lowest) version is determined for the `value` provided, using `minVersion`
     * as the lower bound.
     * @defaultValue 1
     */
    minVersion?: number;
    /**
     * If enabled, the Error Correction Level of the result may be higher than
     * the specified Error Correction Level option if it can be done without
     * increasing the version.
     * @defaultValue true
     */
    boostLevel?: boolean;
    /**
     * The settings for the embedded image.
     */
    imageSettings?: ImageSettings;
};
declare const QRCodeCanvas: React.ForwardRefExoticComponent<QRProps & React.CanvasHTMLAttributes<HTMLCanvasElement> & React.RefAttributes<HTMLCanvasElement>>;
declare const QRCodeSVG: React.ForwardRefExoticComponent<QRProps & React.SVGAttributes<SVGSVGElement> & React.RefAttributes<SVGSVGElement>>;

export { QRCodeCanvas, QRCodeSVG };