import { Observable } from 'rxjs';
import type { Graph } from '../entities';
import type { AbstractLayout, DraftNormalGraphLayoutData, GraphOptions, LayoutAlgorithm, LayoutConfig, LayoutData } from '../types';
interface AbstractLayoutController {
    execute: LayoutAlgorithm;
}
export declare class LayoutController implements AbstractLayoutController {
    presetLayout?: AbstractLayout;
    graph: Graph;
    private destroyed;
    private isGPU?;
    private layoutMethod?;
    private worker?;
    private workerData;
    constructor(graph: Graph, layoutConfig?: GraphOptions['layout']);
    /**
     * 是否有 GPU 版本
     *
     * @param layoutType
     * @returns
     */
    static hasGPUVersion(layoutType: string): boolean;
    /**
     * 是否需要逐步迭代
     *
     * @param layoutType
     * @returns
     */
    static needTick(layoutType: string): boolean;
    /**
     * 获取默认布局配置
     *
     * @returns 默认布局配置
     */
    getDefaultLayoutConfig: (layoutConfig: LayoutConfig) => any;
    /**
     * 执行一般图布局
     */
    execute: (data: DraftNormalGraphLayoutData, layoutConfig: LayoutConfig) => Observable<LayoutData>;
    /**
     * 执行前置布局
     */
    /**
     * 通过 worker 计算布局
     *
     * @param layoutConfig
     * @param data
     */
    private layoutWithWorker;
    /**
     * 执行布局方法
     *
     * @param layoutConfig
     * @param data
     */
    private executeLayoutMethod;
    /**
     * 获取 worker 对象
     *
     * @private
     */
    private getWorker;
    /**
     * 停止 Worker
     *
     * @private
     */
    private stopWorker;
    /**
     * 运行 web worker
     *
     * @param worker
     * @param data
     * @param layoutConfig
     * @private
     */
    private runWebWorker;
    /**
     * 处理 worker 的消息
     *
     * @param resolve
     * @param reject
     * @param event
     * @param data
     * @param layoutConfig
     * @private
     */
    private handleWorkerMessage;
    initPositions: (center: [number, number] | undefined, nodes: DraftNormalGraphLayoutData['nodes'], canvasWidth: number, canvasHeight: number) => boolean;
    /**
     * 销毁布局方法
     */
    destroyLayoutMethods: () => void;
    /**
     * 销毁布局
     */
    destroy: () => void;
}
export {};
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