import { IWidgetModel } from '@shujujiang/core/widget/widgetmodel';
import { ECWidget } from '../../echarts/ecwidget';
export declare class CombinationChart extends ECWidget {
    composeOption(option: IWidgetModel): any;
    assembleSeriesOption(aliasType: string, series: any, chartOption: any): void;
    protected _createGradientDirection(gradientDirection: any): {
        x: number;
        y: number;
        x2: number;
        y2: number;
    };
}