import { AfterViewInit, ChangeDetectorRef, ElementRef, NgZone, OnChanges, OnDestroy, SimpleChanges } from "@angular/core";
import { BehaviorSubject } from "rxjs";
export interface IBrokerValue {
    id: string;
    targetID: string;
    targetValue: number;
}
/**
 * @ignore
 * PROTOTYPE for DONUT ZOOMING
 *
 * This directive allows to zoom it's element to fit the dimensions of parent element
 */
export declare class ZoomContentDirective implements OnDestroy, AfterViewInit, OnChanges {
    private ngZone;
    private cdRef;
    private destroy$;
    zoom: number;
    scalePadding: string;
    zoomRatio: number;
    minZoomDifference: number;
    maxZoom: number;
    minZoom: number;
    useZoom: boolean;
    margin: number;
    minScale: number;
    maxScale: number;
    scaleIN$: BehaviorSubject<IBrokerValue>;
    scaleOUT$: BehaviorSubject<IBrokerValue>;
    private readonly uuid;
    private element;
    private parentElement;
    private elementRect;
    private parentRect;
    private latestDataFromBroker;
    private resizeObserver;
    constructor(element: ElementRef, ngZone: NgZone, cdRef: ChangeDetectorRef);
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    onResize(): void;
    private applyZoom;
    private applyScale;
    private checkScaleBoundaries;
}
