import { DomainAnchor, ZoomWindow } from '../../shared/kernel';
import { Switchable } from '../../shared/options';
export type { DomainAnchor, ZoomWindow };
export interface ZoomOptions extends Switchable {
    /** Which axes are zoomable ('x' by default). */
    axes?: 'x' | 'y' | 'xy';
    /** Mouse wheel zoom (true by default). */
    wheelZoom?: boolean;
    /** Pan by dragging (true by default). */
    dragPan?: boolean;
    /** Modifier key for panning; without it, dragging selects an area (box-zoom). */
    panKey?: 'alt' | 'ctrl' | 'shift' | 'meta';
    /** Drag to select an area → zoom (false by default). */
    dragSelect?: boolean;
    /** Reset on double click (true by default). */
    doubleClickReset?: boolean;
    /** Zoom step per wheel tick (0.1 by default). */
    wheelStep?: number;
    /** Minimum window width (fraction of the domain, 0.05 by default). */
    minRatio?: number;
    /**
     * Initial window sized to this many items along the category axis.
     * Applies even without `enabled`, and yields to an explicit `navigator.min`/`max`.
     * `minRatio` does not clamp it: an explicit count outranks the interaction floor.
     */
    visibleCount?: number;
    /** Which end of the domain `visibleCount` starts from ('start' by default). */
    visibleAnchor?: DomainAnchor;
}
export declare const FULL_WINDOW: ZoomWindow;
export declare function isZoomed(window: ZoomWindow): boolean;
/** Zoom around a point: pivot is the cursor position as a fraction of the window (0..1). */
export declare function zoomAround(window: ZoomWindow, pivot: number, factor: number, minRatio: number): ZoomWindow;
/** Shifts the window by a fraction of its width. */
export declare function panWindow(window: ZoomWindow, deltaRatio: number): ZoomWindow;
/**
 * Window showing `count` of `total` items, anchored to one end of the domain.
 * The full window comes back when the count covers everything or makes no sense.
 */
export declare function windowForCount(count: number, total: number, anchor?: DomainAnchor): ZoomWindow;
/** Slices a categorical domain by the window. */
export declare function sliceDomain(domain: unknown[], window: ZoomWindow): unknown[];
/** Window of a numeric domain. */
export declare function windowExtent(values: number[], window: ZoomWindow): number[];