import { WatermarkOptions } from './types';
export declare class Watermark {
    /** 水印配置 */
    private options;
    /** 水印挂载容器 */
    private container;
    /** 水印的包含节点 */
    private watermarkContent;
    /** 水印节点 */
    private watermarkDom;
    /** 水印样式 */
    private style;
    private watermarkTag;
    private shadowRoot;
    private mutationObserver;
    constructor(options?: WatermarkOptions);
    /**
     * 更新水印配置，并重新渲染
     * @param options
     */
    update(options?: WatermarkOptions): void;
    /**
     * 显示水印
     */
    show(): void;
    /**
     * 隐藏水印
     */
    hide(): void;
    /**
     * 销毁水印
     */
    destroy(): void;
    /**
     * 判断是否发起重新生成水印
     * @param mutation
     */
    _isAgainRender: (mutation: MutationRecord) => boolean;
    _getNodeRandomId: (node: Node) => any;
    /**
     * 销毁MutationObserver
     */
    _destroyMutationObserver: () => void;
    /**
     * 获取水印节点
     * @param height
     */
    _getWatermarkDom: (watermarkHeight: number) => Promise<HTMLElement>;
    _getWatermarkHeight: () => number;
    _render(): Promise<void>;
}
export { WatermarkOptions } from './types';
export { defaultOptions } from './config';