import type { RefObject } from "react";
import { Distances, GanttRelationEvent, MapTaskToCoordinates, OnRelationChange, RelationMoveTarget, Task, TaskMapByLevel, RenderTask, TaskToGlobalIndexMap } from "../../types";
type UseCreateRelationParams = {
    distances: Distances;
    ganttSVGRef: RefObject<SVGSVGElement>;
    mapTaskToCoordinates: MapTaskToCoordinates;
    mapTaskToGlobalIndex: TaskToGlobalIndexMap;
    onRelationChange?: OnRelationChange;
    rtl: boolean;
    taskHalfHeight: number;
    tasksMap: TaskMapByLevel;
    visibleTasks: readonly RenderTask[];
};
export declare const useCreateRelation: ({ distances: { relationCircleOffset, relationCircleRadius }, ganttSVGRef, mapTaskToCoordinates, mapTaskToGlobalIndex, onRelationChange, rtl, taskHalfHeight, tasksMap, visibleTasks, }: UseCreateRelationParams) => [
    GanttRelationEvent | null,
    (target: RelationMoveTarget, task: Task) => void
];
export {};