import { Graph, IPoint } from "./core";
import { Sector } from "./circle";
import Text from "./text";
export type RingItem = number | {
    label?: string;
    value: number;
    color?: string;
};
export type RingOptions = {
    /**
     * 圆心
     */
    o: IPoint;
    /**
     * 半径
     */
    r: number;
    /**
     * 环宽度
     */
    width: number;
    /**
     * 绘制环
     * @param graph
     * @param item
     * @param index
     */
    render?: (graph: Sector | Text, item: RingItem, index: number) => void;
    /**
     * 填充色 按顺序获取
     */
    colors?: string[];
    /**
     * 显示数据
     */
    items?: Array<RingItem>;
};
export default class Ring extends Graph {
    private readonly optional;
    private readonly colors;
    private readonly items;
    constructor(optional: RingOptions);
    addItem(item: RingItem): this;
    draw(): SVGElement;
}