import { Base, ArrayChanges } from "./base";
import { HorizontalAlignment, VerticalAlignment } from "./base-interfaces";
import { SurveyModel } from "./survey";
import { ITheme } from "./themes";
export declare class CoverCell {
    private cover;
    private positionX;
    private positionY;
    static CLASSNAME: string;
    private calcRow;
    private calcColumn;
    private calcAlignItems;
    private calcAlignText;
    private calcJustifyContent;
    constructor(cover: Cover, positionX: HorizontalAlignment, positionY: VerticalAlignment);
    get survey(): SurveyModel;
    get css(): string;
    get style(): any;
    get contentStyle(): any;
    get showLogo(): boolean;
    get showTitle(): boolean;
    get showDescription(): boolean;
    get isEmpty(): boolean;
    get textAreaWidth(): string;
    get width(): number;
    get contentMaxWidth(): string;
}
export declare class Cover extends Base {
    private _survey;
    private calcBackgroundSize;
    private updateHeaderClasses;
    private updateContentClasses;
    private updateBackgroundImageClasses;
    fromTheme(theme: ITheme): void;
    private init;
    constructor();
    getType(): string;
    cells: CoverCell[];
    height: number;
    mobileHeight: number;
    inheritWidthFrom: "survey" | "container";
    textAreaWidth: number;
    textGlowEnabled: boolean;
    overlapEnabled: boolean;
    backgroundColor: string;
    titleColor: string;
    descriptionColor: string;
    backgroundImage: string;
    renderBackgroundImage: string;
    backgroundImageFit: "cover" | "fill" | "contain" | "tile";
    backgroundImageOpacity: number;
    logoPositionX: HorizontalAlignment;
    logoPositionY: VerticalAlignment;
    titlePositionX: HorizontalAlignment;
    titlePositionY: VerticalAlignment;
    descriptionPositionX: HorizontalAlignment;
    descriptionPositionY: VerticalAlignment;
    logoStyle: {
        gridColumn: number;
        gridRow: number;
    };
    titleStyle: {
        gridColumn: number;
        gridRow: number;
    };
    descriptionStyle: {
        gridColumn: number;
        gridRow: number;
    };
    headerClasses: string;
    contentClasses: string;
    width: number;
    maxWidth: string;
    backgroundImageClasses: string;
    get renderedHeight(): string;
    get renderedTextAreaWidth(): string;
    get isEmpty(): boolean;
    get survey(): SurveyModel;
    set survey(newValue: SurveyModel);
    get backgroundImageStyle(): {
        opacity: number;
        backgroundImage: string;
        backgroundSize: string;
    };
    protected propertyValueChanged(name: string, oldValue: any, newValue: any, arrayChanges?: ArrayChanges, target?: Base): void;
    getContentMaxWidth(cell: CoverCell): string;
    processResponsiveness(): void;
    get hasBackground(): boolean;
}