import { PositionSchema } from '../../common/schema';
import { Rectangle } from '@gedit/math';
import type { EntityManager, Entity } from '../../common';
import type { PlaygroundConfigEntity } from '../layer/config';
export declare const ADSORB_DELTA_DEFAULT = 4;
export declare class Adsorber {
    protected opts: Adsorber.Option;
    private _adsorbedX?;
    private _adsorbedY?;
    private _adsorbedDeltaX?;
    private _adsorbedDeltaY?;
    constructor(opts?: Partial<Adsorber.Option>);
    /**
     * 计算吸附偏移量
     * @param target - 目标选择框
     * @param refs - 参考节点
     * @param lines - 参考线
     * @return 吸附后的偏移量, 如果为undefined，则表示没有被吸住，不做偏移
     */
    calculateDelta(target: Rectangle, refs: Rectangle[], lines: Adsorber.Line[]): Partial<PositionSchema>;
    /**
     * 计算吸附
     * @param target - 目标选择框
     * @param refs - 参考节点
     * @param lines - 参考线
     * @return 吸附后的位置
     */
    calculate(target: Rectangle, refs: Rectangle[], lines: Adsorber.Line[]): PositionSchema;
    /**
     * 计算吸附后逃逸的偏移量
     * @param newPos - 当前的位置
     * @param type
     */
    protected calculateEscape(newPos: number, type: Adsorber.Direction): number | undefined;
    /**
     * 吸附时候位置
     */
    protected getAbsorbedPos(type: Adsorber.Direction): number | undefined;
    /**
     * 清空吸附位置
     * @param type
     */
    clearAbsorbedPos(type?: Adsorber.Direction): void;
}
/**
 * 吸附计算
 */
export declare namespace Adsorber {
    /**
     * 吸附配置数据
     */
    interface Option {
        adSorbDelta: number;
    }
    /**
     * 吸附参考线类型
     */
    interface Line {
        type: Adsorber.Direction;
        pos: number;
    }
    /**
     * 吸附类型
     */
    enum Direction {
        HORIZONTAL = 0,
        VERTICAL = 1
    }
    const defaultOption: Option;
    function isHorizantal(direction: Adsorber.Direction): boolean;
    function getRefValues(target: Rectangle, direction: Adsorber.Direction): number[];
    function getRefsFromEntities(entityManager: EntityManager, ignoreEntities: Entity[], configEntity?: PlaygroundConfigEntity): Rectangle[];
}
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