import Layer, { ILayerEvent, ILayerState } from './Layer';
import { ISketchUtils } from './Sketch';
export interface IImgProps {
    /**
     * 图片地址
     */
    src: string | null;
    /**
     * 渲染尺寸
     *
     * 当 值为 `'auto'` 时，将以图片本身的像素尺寸进行渲染
     */
    size: 'auto' | number;
}
export interface IImgEvent extends ILayerEvent {
    loaded: () => void;
    src: (src: IImgProps['src']) => void;
    size: (size: IImgProps['size']) => void;
}
export default class Img extends Layer<IImgEvent> {
    props: IImgProps;
    image: HTMLImageElement;
    private raf;
    constructor(state?: Partial<ILayerState>, props?: Partial<IImgProps>);
    /**
     * 设置图片路径
     */
    src(value: string): this;
    /**
     * 设置图片渲染尺寸
     *
     * 相当于宽高的最大值
     *
     * 若想改变比例请使用 [[Img.scale]]
     */
    size(value: number): this;
    protected _clone(): Img;
    protected _render(ctx: CanvasRenderingContext2D, utils: ISketchUtils): void;
}