import DistanceTool, { DistanceToolOptions } from './DistanceTool';
export type AreaToolOptions = {
    language?: string;
    metric?: boolean;
    imperial?: boolean;
    symbol?: any;
    vertexSymbol?: any;
    labelOptions?: any;
    mode?: string;
} & DistanceToolOptions;
/**
 * 一个继承于DistanceTool类，测量面积的地图工具类。
 *
 * @english
 * A map tool to help measure area on the map .it is extends DistanceTool
 * @category maptool
 * @extends DistanceTool
 * @example
 * var areaTool = new AreaTool({
 *     'once' : true,
 *     'symbol': {
 *       'lineColor' : '#34495e',
 *       'lineWidth' : 2
 *     },
 *     'vertexSymbol' : {
 *       'markerType'        : 'ellipse',
 *       'markerFill'        : '#1bbc9b',
 *       'markerLineColor'   : '#000',
 *       'markerLineWidth'   : 3,
 *       'markerWidth'       : 10,
 *      'markerHeight'      : 10
 *    },
 *    'language' : 'en-US'
 *  }).addTo(map);
 */
declare class AreaTool extends DistanceTool {
    options: AreaToolOptions;
    /**
     * 配置项
     *
     * @english
     * @param options option              - construct options
     * @param options.language=zh-CN      - language of the distance tool, zh-CN or en-US
     * @param options.metric=true         - display result in metric system
     * @param options.imperial=false      - display result in imperial system.
     * @param options.symbol=null         - symbol of the line
     * @param options.vertexSymbol=null   - symbol of the vertice
     * @param options.labelOptions=null   - construct options of the vertice labels.
     */
    constructor(options: AreaToolOptions);
}
export default AreaTool;
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