/**
 * canvas画板
 * 兼容移动端touch事件
 * ----------传入的参数-----------
 * @tag                  canvas的id
 * @historyList          历史纪录的点
 * @background           背景色
 * @color                画笔颜色
 * @size                 画笔大小
 * ----------提供的方法-----------
 * @resetCanvas          清空canvas的方法
 * @init                 还原所有画笔的画布 options {[{size: Number,color: String,list: [[12,13],[14,15]], {img, x, y, w, h, isCover}}]}
 * @after                后一步画布-----code=404没有前一笔, code=200成功
 * @front                前一步画布-----code=404没有前一笔, code=200成功
 * @getPointList         获取画笔记录
 * @setColor             设置颜色 options String
 * @setPenSize           设置画笔的大小 options Number
 * @eraser               橡皮檫
 * @getbase64            获取canvas的base64 options (质量0-1越大越好, 图片类型)
 * @drawImg              设置图片 options (图片源, 位置x, 位置y, 图片宽, 图片高, 是否被历史画笔覆盖)
 * @downland             下载canvas图片文件 options 文件名字, 质量0-1越大越好, 图片类型
 * @getBase64ImgFile     获取canvas图片file类型(区别于base64字符串) options (质量0-1越大越好, 图片类型, 文件名)
 * @clearPixel           设置清除像素画笔
 * @setNoDraw            特殊场景比如移动元素的情况下不进行绘画
 */
export interface historyType {
    size?: number;
    color?: CSSStyleDeclaration["color"];
    list?: [number, number][];
    isClearPixel?: boolean;
    img?: CanvasImageSource;
    isCover?: boolean;
    x?: number;
    y?: number;
    w?: number;
    h?: number;
}
export default class Draw {
    canvas: HTMLCanvasElement;
    ctx: CanvasRenderingContext2D;
    width: number;
    height: number;
    canvasOffsetTop: number;
    canvasOffsetLeft: number;
    startPosition: null | [number, number];
    isdraw: boolean;
    history: historyType[];
    isInit: boolean;
    currentPen: [number, number][];
    drawStep: number;
    penSize: number;
    penColor: CSSStyleDeclaration["color"];
    backGround: CSSStyleDeclaration["color"];
    beforeEarserColor: CSSStyleDeclaration["color"] | null;
    isEraser: boolean;
    isClearPixel: boolean;
    noDraw: boolean;
    drawCallback?: (e: Draw) => void;
    constructor(tag: string, color: CSSStyleDeclaration["color"], size: number, historyList?: [], background?: CSSStyleDeclaration["color"], drawCallback?: (e: Draw) => void);
    drawClearPixel(cx: number, cy: number): void;
    drawLine(X: number, Y: number): void;
    clear(): void;
    historyDrawPen(penList?: historyType[]): Promise<void>;
    getHistoryPoint(): historyType[];
    setColor(color: CSSStyleDeclaration["color"]): void;
    setPenSize(size: number): void;
    clearPixel(data: boolean): void;
    resetCanvas(): void;
    init(penList: historyType[]): void;
    after(): {
        code: number;
        msg: string;
    };
    front(): {
        code: number;
        msg: string;
    };
    eraser(data: boolean): void;
    setNoDraw(data: boolean): void;
    getbase64(quality?: number, type?: string): string;
    drawImg(img: CanvasImageSource, x: number, y: number, w: number, h: number, isCover?: boolean): void;
    downland(name: string, quality?: number, type?: "image/png" | "image/jpeg"): void;
    getBase64ImgFile(quality: number | undefined, type: "image/png" | "image/jpeg" | undefined, name: string): "" | File | null;
}