import { ElementRef } from '@angular/core';
import { NzModalService } from 'ng-zorro-antd';
export declare class ImagePreviewDirective {
    private elementRef;
    private modalService;
    private screenWidth;
    private screenHeight;
    private naturalWidth;
    private naturalHeight;
    private element;
    constructor(elementRef: ElementRef, modalService: NzModalService);
    src: string;
    width: number;
    openPreview(): void;
}