import { Marker, GoogleMap, LatLngBounds } from '@a7gm/core/services/google-maps-types';
export interface CalculatorResult {
    text: string;
    index: number;
}
export declare type CalculateFunction = (marker: Marker[], count: number) => CalculatorResult;
export interface MarkerClustererInstance {
    zoomOnClick_: boolean;
    averageCenter_: boolean;
    imagePath_: string;
    minimumClusterSize_: number;
    imageExtension_: string;
    new (map: GoogleMap, marker: Marker[], options: ClusterOptions): MarkerClustererInstance;
    addMarker(marker: Marker, noDraw?: boolean): void;
    addMarkers(markers: Marker[], noDraw?: boolean): void;
    clearMarkers(): void;
    getCalculator(): CalculateFunction;
    getExtendedBounds(bounds: LatLngBounds): LatLngBounds;
    getGridSize(): number;
    getMap(): GoogleMap;
    getMarkers(): Marker[];
    getStyles(): ClusterStyle;
    getTotalClusters(): number;
    getTotalMarkers(): Marker[];
    isZoomOnClick(): boolean;
    redraw(): void;
    removeMarker(marker: Marker): boolean;
    resetViewport(): void;
    setCalculator(calculator: CalculateFunction): void;
    setGridSize(size: number): void;
    setMap(map: GoogleMap): void;
    setMaxZoom(maxZoom: number): void;
    setStyles(styles: ClusterStyle): void;
}
export interface ClusterOptions {
    /**
     * The grid size of a cluster in pixels.
     */
    gridSize?: number;
    /**
     * The maximum zoom level that a marker can be part of a cluster.
     */
    maxZoom?: number;
    /**
     * Whether the default behaviour of clicking on a cluster is to zoom into it.
     */
    zoomOnClick?: boolean;
    /**
     * Whether the center of each cluster should be the average of all markers in the cluster.
     */
    averageCenter?: boolean;
    /**
     * The minimum number of markers to be in a cluster before the markers are hidden and a count is shown.
     */
    minimumClusterSize?: number;
    /**
     * An object that has style properties.
     */
    styles?: ClusterStyle;
    imagePath?: string;
    imageExtension?: string;
}
export interface ClusterStyle {
    /**
     * The image url.
     */
    url?: string;
    /**
     * The image height.
     */
    height?: number;
    /**
     * The image width.
     */
    width?: number;
    /**
     * The anchor position of the label text.
     */
    anchor?: [number, number];
    /**
     * The text color.
     */
    textColor?: string;
    /**
     * The text size.
     */
    textSize?: number;
    /**
     * The position of the backgound x, y.
     */
    backgroundPosition?: string;
    /**
     * The anchor position of the icon x, y.
     */
    iconAnchor?: [number, number];
}