/**
 * @class Canvas管理类
 * @classdesc
 *  包含canvas元素、ctx上下文、以及rawSize、size、origin、padding等多种尺寸信息
 *  包含canvas元素的创建、清空等方法
 * @desc
 *  其中创建分为两个阶段:
 *  第一阶段：Canvas构造器中
 *  第二阶段：业务方调用setOption方法时，触发postSetup方法
 */
import { GridOptions, CanvasOrigin, CanvasSize, CanvasConfig } from '../models';
export default class Canvas {
    private static readonly defaultPadding;
    element: HTMLCanvasElement;
    ctx: CanvasRenderingContext2D;
    origin: CanvasOrigin;
    rawSize: CanvasSize;
    size: CanvasSize;
    customTooltip: any;
    padding: any;
    getBoundingClientRectInMp: any;
    private containerElement;
    constructor(el: string, config?: CanvasConfig, cb?: () => CanvasConfig);
    /**
     *【延迟初始化】
     * 获取options后，调整canvas尺寸/原点等信息
     * 在setOption时触发
     */
    postSetup(coordinateType: string, grid: GridOptions): void;
    clearCanvas(): void;
    private setup;
    private setupInWeb;
    private setupInMp;
    private computeRawSize;
    private parseOptions;
    private computeSize;
    private computeOrigin;
}