import { Destroyable, IDestroyable } from 'destroyable';
import { Observable } from 'rxjs/internal/Observable';
import { Subject } from 'rxjs/internal/Subject';
import { Promisable } from 'type-fest';
import { BoundingBox } from 'xyzt';
import { ITouchController } from '../interfaces/ITouchController';
import { TouchFrame } from '../touch/TouchFrame';
import { WithOptional } from '../utils/WithOptional';
import { Multitouch } from './Multitouch';
interface IMultitouchControllerOptions<TElement extends BoundingBox> {
    touchController: ITouchController;
    elementBinder: (frame: TouchFrame) => Promisable<TElement | undefined>;
}
declare const multitouchControllerOptionsDefault: {
    elementBinder: () => undefined;
};
export declare class MultitouchController<TElement extends BoundingBox> extends Destroyable implements IDestroyable {
    readonly touchController: ITouchController;
    readonly multitouches: Subject<Multitouch<TElement>>;
    private ongoingMultitouches;
    private readonly elementBinder;
    constructor(options: WithOptional<IMultitouchControllerOptions<TElement>, keyof typeof multitouchControllerOptionsDefault>);
    private watchNewTouchesAndPassThemToMultitouches;
    get hoveredElements(): Observable<TElement | undefined>;
    get hoveredElementsChanges(): Observable<{
        previous?: TElement;
        current?: TElement;
    }>;
    destroy(): Promise<void>;
}
export {};