import { Base, Type } from "igniteui-angular-core/ES2015/type";
import { SizeData } from "igniteui-angular-core/ES2015/SizeData";
import { PointData } from "igniteui-angular-core/ES2015/PointData";
import { RectData } from "igniteui-angular-core/ES2015/RectData";
/**
 * @hidden
 */
export declare class DoughnutChartLabelVisualData extends Base {
    static $t: Type;
    private _labelValue;
    labelValue: any;
    private _labelSize;
    labelSize: SizeData;
    private _labelPosition;
    labelPosition: PointData;
    scaleByViewport(a: RectData): void;
    serialize(): string;
}
