import Widget from "../Widget";
/**
 * 比例尺
 * @noInheritDoc
 * @example
 * ```ts
 * viewer.distanceLegend.enable = true
 * ```
 */
declare class DistanceLegend extends Widget {
    private _labelEl;
    private _scaleBarEl;
    private _lastUpdate;
    /**
     * @hidden
     */
    constructor();
    /**
     * @hidden
     */
    get type(): any;
    /**
     *
     * @private
     */
    _installHook(): void;
    /**
     *
     * @private
     */
    _bindEvent(): void;
    /**
     *
     * @private
     */
    _unbindEvent(): void;
    /**
     *
     * @param scene
     * @param time
     * @returns
     * @private
     */
    _updateContent(scene: any, time: any): void;
    /**
     *
     * @private
     */
    _mountContent(): void;
}
export default DistanceLegend;