import { ElementRef, OnChanges, OnInit, Renderer2, SimpleChanges } from '@angular/core';
import { ImageLoaderService } from '@rxap/services';
import * as i0 from "@angular/core";
export declare enum GlobalStyleOptions {
    INITIAL = "initial",
    INHERIT = "inherit"
}
export declare enum BackgroundSizeOptions {
    AUTO = "auto",
    COVER = "cover",
    CONTAIN = "contain"
}
export type BackgroundSize = GlobalStyleOptions | BackgroundSizeOptions | string;
export declare enum BackgroundRepeatOptions {
    NO_REPEAT = "no-repeat"
}
export type BackgroundRepeat = GlobalStyleOptions | BackgroundRepeatOptions;
export declare enum BackgroundPositionOptions {
    CENTER = "center",
    CENTER_CENTER = "center center"
}
export type BackgroundPosition = GlobalStyleOptions | BackgroundPositionOptions | string;
export declare class BackgroundImageDirective implements OnChanges, OnInit {
    private readonly host;
    private readonly renderer;
    private readonly imageLoader;
    imageUrl: string | null | undefined;
    placeholderImageUrl: string;
    size?: BackgroundSize;
    repeat?: BackgroundRepeat;
    position?: BackgroundPosition;
    constructor(host: ElementRef, renderer: Renderer2, imageLoader: ImageLoaderService);
    ngOnInit(): void;
    ngOnChanges(changes: SimpleChanges): void;
    private repeatChange;
    private positionChange;
    private sizeChange;
    private imageUrlChange;
    static ɵfac: i0.ɵɵFactoryDeclaration<BackgroundImageDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<BackgroundImageDirective, "[rxapBackgroundImage]", never, { "imageUrl": { "alias": "rxapBackgroundImage"; "required": false; }; "placeholderImageUrl": { "alias": "placeholderImageUrl"; "required": false; }; "size": { "alias": "size"; "required": false; }; "repeat": { "alias": "repeat"; "required": false; }; "position": { "alias": "position"; "required": false; }; }, {}, never, never, true, never>;
}