import * as React from 'react';
type Pt = {
    x: number;
    y: number;
};
/** REQ-SURF-144 — zoom/pan/pinch on the Stage.
 * - wheel: non-passive, zooms (and prevents the page scroll) only with
 *   ctrlKey/metaKey or while already zoomed; at 1× a plain wheel scrolls.
 * - one pointer: pans via pointer capture, only while zoomed.
 * - two pointers: pinch — zoom = start zoom × (distance / start distance),
 *   clamped 1–8 by the Root.
 * - pan resets whenever zoom returns to 1. */
export declare function useZoomPan(stageRef: React.RefObject<HTMLElement | null>): {
    panState: Pt;
    resetPan: () => void;
    gesturing: boolean;
    handlers: {
        onPointerDown: (e: React.PointerEvent) => void;
        onPointerMove: (e: React.PointerEvent) => void;
        onPointerUp: (e: React.PointerEvent) => void;
        onPointerCancel: (e: React.PointerEvent) => void;
    };
};
export {};
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