import { CssColor } from '@breadstone/mosaik-themes';
import { QRErrorCorrection } from '../../../Types/QRErrorCorrection';
import { CustomElement } from '../../Abstracts/CustomElement';
import { IQRCodeElementProps } from './IQRCodeElementProps';
declare const QRCodeElement_base: (abstract new (...args: Array<any>) => import("../../../Behaviors/Themeable").IThemeableProps) & typeof CustomElement & import("../../../Behaviors/Themeable").IThemeableCtor;
/**
 * QR Code - A machine-readable code consisting of an array of black and white squares, typically used for storing URLs or other information that can be scanned by a smartphone camera.
 *
 * @example
 * ```html
 * <!-- Basic QR code (set the `text` property via JavaScript to encode data) -->
 * <mosaik-qrcode></mosaik-qrcode>
 *
 * <!-- QR code with high error correction -->
 * <mosaik-qrcode error-correction="H"></mosaik-qrcode>
 *
 * <!-- QR code with custom colors -->
 * <mosaik-qrcode background-color="#ffffff" foreground-color="#000000"></mosaik-qrcode>
 * ```
 *
 * @public
 */
export declare class QRCodeElement extends QRCodeElement_base implements IQRCodeElementProps {
    private _canvas;
    private _text;
    private _radius;
    private _dimension;
    private _errorCorrection;
    private _backgroundColor;
    private _foregroundColor;
    /**
     * @public
     */
    constructor();
    /**
     * Returns the `is` property.
     * The `is` property represents natural name of this element.
     *
     * @public
     * @static
     * @readonly
     */
    static get is(): string;
    /**
     * Gets or sets the `text` property.
     *
     * @public
     */
    get text(): string;
    set text(value: string);
    /**
     * Gets or sets the `radius` property.
     *
     * @public
     */
    get radius(): number;
    set radius(value: number);
    /**
     * Gets or sets the `dimension` property.
     *
     * @public
     */
    get dimension(): number;
    set dimension(value: number);
    /**
     * Gets or sets the `errorCorrection` property.
     *
     * @public
     * @attr
     */
    get errorCorrection(): QRErrorCorrection;
    set errorCorrection(value: QRErrorCorrection);
    /**
     * Gets or sets the `backgroundColor` property of the QR code.
     * If not set (`null` or `undefind`), the background color will respect the CSS variable `--qr-code-background-color`.
     *
     * @public
     * @attr
     */
    get backgroundColor(): CssColor | null | undefined;
    set backgroundColor(value: CssColor | null | undefined);
    /**
     * Gets or sets the `foregroundColor` property of the QR code.
     * If not set (`null` or `undefind`), the fill color will respect the CSS variable `--qr-code-foreground-color`.
     *
     * @public
     * @attr
     */
    get foregroundColor(): CssColor | null | undefined;
    set foregroundColor(value: CssColor | null | undefined);
    /**
     * Returns qr code image as data URL (see https://mdn.io/todataurl for the list of possible paramters).
     *
     * @public
     */
    toDataURL(imageType?: string, quality?: number): string;
    /**
     * Returns qr code image as data URL trimmed from white space.
     *
     * @public
     */
    toBlob(): Blob;
    /**
     * @protected
     * @override
     */
    protected onApplyTemplate(): void;
    /**
     * @protected
     */
    protected onTextPropertyChanged(_prev?: string, _next?: string): void;
    /**
     * @protected
     */
    protected onRadiusPropertyChanged(_prev?: number, _next?: number): void;
    /**
     * @protected
     */
    protected onDimensionPropertyChanged(_prev?: number, _next?: number): void;
    /**
     * @protected
     */
    protected onErrorCorrectionPropertyChanged(_prev?: QRErrorCorrection, _next?: QRErrorCorrection): void;
    /**
     * @protected
     */
    protected onBackgroundColorPropertyChanged(_prev?: CssColor | null, _next?: CssColor | null): void;
    /**
     * @protected
     */
    protected onForegroundColorPropertyChanged(_prev?: CssColor | null, _next?: CssColor | null): void;
    /**
     * @private
     */
    private invalidate;
    /**
     * @private
     */
    private dataURLToBlob;
}
/**
* @public
*/
export declare namespace QRCodeElement {
    type Props = IQRCodeElementProps;
}
/**
 * @public
 */
declare global {
    interface HTMLElementTagNameMap {
        'mosaik-qrcode': QRCodeElement;
    }
}
export {};
//# sourceMappingURL=QRCodeElement.d.ts.map