import { ChartModel } from './chart.model';
/**
 * Pie chart model definition
 */
export declare class PieChartModel extends ChartModel {
    /**
     * Should pie chart to be like normal circle (true) or filled circle(false). Default: false.
     */
    donut?: boolean;
    /**
     * Show or hide the labels. Default: true.
     */
    showLabels?: boolean;
    /**
     * Make the radius of each slice proportional to it's value. Default: false.
     */
    explodeSlices?: boolean;
    /** @hidden*/
    constructor(values?: Object);
}