import { IRenderable, IRenderer, ISpecification, IStackeable } from '../../api';
/**
 * Implementation of the 'camera' markup element.
 * A HTML video element is used to create a camera.
 * For CSS manipulations the following classes are added:
 *  lto-camera: the camera container
 *  lto-take-photo: is used for taking a photo. The photo will be displayed in the canvas below the video element
 *  lto-reset-photo: is enabled when photo is taken. A click on this div, resets the camera
 *
 * @see {@link IRenderable}
 */
export declare class Camera implements IRenderable, IStackeable {
    private readonly maxCanvasSize;
    private readonly spec;
    private mediaStream?;
    constructor(message: ISpecification);
    /**
     * @inheritDoc
     */
    render(renderer: IRenderer, isNested: boolean): HTMLElement;
    private initCamera;
    private takePhoto;
    private stopCamera;
    private activatePhotoButton;
    private compressCameraImage;
    private activateResetButton;
    private static deactivateClick;
}