import type { Foreground, NormalizedForeground } from 'modern-idoc';
import { Element2DFill } from './Element2DFill';
/**
 * 前景 = 带「图片处理管线」的填充。管线（描边/调色/抠图等图片样式）由基类
 * `Element2DFill` 在图片加载时经注入的解析器烘焙到运行时纹理，本类只在 `Fill`
 * 之上补充 `fillWithShape`（前景按形状裁切）。
 */
export declare class Element2DForeground extends Element2DFill implements NormalizedForeground {
    fillWithShape: NormalizedForeground['fillWithShape'];
    setProperties(properties?: Foreground): this;
    protected _updateProperty(key: string, value: any, oldValue: any): void;
}