import type { NVL } from '@neo4j-nvl/base';
import { BaseInteraction } from './base';
/**
 * Options for the zoom interaction handler to customize its behavior.
 */
export type ZoomInteractionOptions = {
    /**
     * If true, the interaction handler will not update the NVL instance directly.
     * Instead, it will only call the onZoom callback with the calculated values,
     * allowing the parent application to control when and how to apply the zoom update.
     * @defaultValue false
     */
    controlledZoom?: boolean;
};
/**
 * Callbacks for the zoom interaction handler.
 */
export type ZoomInteractionCallbacks = {
    /**
     * Called when the canvas is zoomed.
     * @param zoomLevel - The zoom level.
     * @param event - The original mouse wheel event.
     * @deprecated Use {@link onZoomAndPan} instead.
     */
    onZoom?: ((zoomLevel: number, event: WheelEvent) => void) | boolean;
    /**
     * Called when the canvas is zoomed and panned.
     * @param zoomLevel - The zoom level.
     * @param panX - The new pan X coordinate.
     * @param panY - The new pan Y coordinate.
     * @param event - The original mouse wheel event.
     */
    onZoomAndPan?: ((zoomLevel: number, panX: number, panY: number, event: WheelEvent) => void) | boolean;
};
/**
 * Interaction handler for zooming the canvas, which is achieved by:
 * - Scrolling the mouse wheel on the canvas
 * - Using trackpad pinch gestures (equivalent to Ctrl/Cmd + scroll)
 *
 * For examples, head to the {@link https://neo4j.com/docs/nvl/current/interaction-handlers/#_zoominteraction Zoom Interaction documentation page}.
 */
export declare class ZoomInteraction extends BaseInteraction<ZoomInteractionOptions> {
    private zoomLimits;
    /**
     * Creates a new instance of the zoom interaction handler.
     * @param nvl - The NVL instance to attach the interaction handler to.
     * @param options - Options to customize the zoom interaction behavior.
     */
    constructor(nvl: NVL, options?: ZoomInteractionOptions);
    /**
     * The function to be called on mouse wheel event on the canvas.
     * @param evt - The mouse wheel event.
     */
    private handleWheel;
    /**
     * Throttled zoom function to avoid events happening too fast.
     * @param event - The original mouse wheel event.
     *
     * @remarks
     * "Wheel" with a touchpad, the wheel is triggered event a lot,
     * especially a lot of very small values.
     * However, updating values in NVL instance takes time.
     * Sometimes it lost the track of multiple events happening too soon.
     * As a result, the zoom might lose its anchor point under touch pad.
     * Therefore, the throttle is needed to avoid events happening too fast.
     * The throttle is set to 25ms.
     */
    private throttledZoom;
    /**
     * Removes the relevant event listeners from the canvas.
     */
    destroy: () => void;
}