import type { PlotLayout } from "../layout/plot-layout";
import { type ZoomController } from "./zoom-controller";
/**
 * Resolver that maps a cursor position to `{ controller, layout }` —
 * returns `null` when the cursor is not inside any facet. In
 * independent-zoom mode the facet under the cursor owns its events; in
 * shared-zoom mode the resolver always returns the same controller for
 * every plot rect in the grid.
 */
export interface ZoomTarget {
    controller: ZoomController;
    layout: PlotLayout;
}
/**
 * Apply a wheel-zoom delta to the resolved target. The worker
 * dispatches interaction events forwarded from the host's
 * `RawEventForwarder` and calls this directly.
 */
export declare function applyWheel(target: ZoomTarget, mouseX: number, mouseY: number, deltaY: number): void;
/**
 * Apply a drag-pan delta to the resolved target. Exported for the
 * same reason as {@link applyWheel}: worker-mode interaction
 * dispatch reuses the math without owning DOM listeners.
 */
export declare function applyPan(target: ZoomTarget, dx: number, dy: number): void;