import type { Fill, NormalizedFill, PipelineImage } from 'modern-idoc';
import type { AnimatedTexture } from '../../resources';
import type { Element2D } from './Element2D';
import { CoreObject } from '../../../core';
import { Texture2D } from '../../resources';
export interface Element2DFill extends NormalizedFill {
}
export declare class Element2DFill extends CoreObject implements NormalizedFill {
    protected _parent: Element2D;
    enabled: boolean;
    color?: NormalizedFill['color'];
    image?: NormalizedFill['image'];
    linearGradient?: NormalizedFill['linearGradient'];
    radialGradient?: NormalizedFill['radialGradient'];
    cropRect?: NormalizedFill['cropRect'];
    stretchRect?: NormalizedFill['stretchRect'];
    dpi?: NormalizedFill['dpi'];
    rotateWithShape?: NormalizedFill['rotateWithShape'];
    tile?: NormalizedFill['tile'];
    opacity?: NormalizedFill['opacity'];
    /** 图片处理管线；图片加载后交由注入的解析器烘焙到运行时纹理，不持久化 */
    imagePipelines?: NormalizedFill['imagePipelines'];
    texture?: Texture2D;
    animatedTexture?: AnimatedTexture;
    constructor(_parent: Element2D);
    protected _setProperties(properties?: NormalizedFill): this;
    setProperties(properties?: Fill): this;
    protected _updateProperty(key: string, value: any, oldValue: any): void;
    loadTexture(): Promise<void>;
    /**
     * 把原图经 `imagePipelines` 烘焙成一张运行时纹理（无管线 / 无解析器 / gif 时跳过）。
     * 始终从 image 独立解码像素喂给管线，不读 `this.texture.source`（那张 ImageBitmap
     * 由纹理管线持有、会经 premultiply 上传/GC 而被消费）。结果按 `url + 管线` 缓存复用。
     */
    protected _applyImagePipelines(url: string): Promise<void>;
    protected _imagePipelineKey(imagePipelines: NonNullable<NormalizedFill['imagePipelines']>): string;
    /** 从 image 独立解码为中立像素结构（不读 GPU 纹理 source） */
    protected _decodePipelineSource(url: string): Promise<PipelineImage | undefined>;
    protected _pipelineImageToCanvas(image: PipelineImage): HTMLCanvasElement | undefined;
    protected _updateTexture(): Promise<void>;
    isValid(): boolean;
    /** Resolve `@token` theme colors lazily on draw, same as outline / text do. */
    protected _resolveThemeColor<T = any>(value: T): T | string;
    draw(): void;
    protected _getFrameCurrentTime(): number;
    updateFrameIndex(): this;
    process(_delta: number): void;
}