import { Animated } from 'react-native';
export declare type ImageFit = 'fit' | 'fill';
export interface ImageGallerySource {
    readonly description?: string;
    readonly id: string;
    readonly title?: string;
    readonly url: string;
}
export interface ImageGalleryMeasurements {
    readonly height: number;
    readonly scale: number;
    readonly width: number;
    readonly x: number;
    readonly y: number;
}
export interface ImageGallerySize {
    readonly containerHeight: number;
    readonly containerWidth: number;
    readonly imageHeight: number;
    readonly imageWidth: number;
    readonly mode: ImageFit;
}
export interface ImageGalleryScrollProps {
    readonly width: Animated.Value;
    readonly height: Animated.Value;
    readonly imageSource?: ImageGallerySource;
    readonly openImageMeasurements?: ImageGalleryMeasurements;
    readonly openProgress?: any;
    readonly dismissProgress?: any;
    readonly transitionProgress?: any;
}
export interface ImageGalleryMeasureFunctions {
    readonly imageSizeMeasurer: () => ImageGalleryMeasurements;
    readonly measurer: () => ImageGalleryMeasurements;
}
export interface ImageGalleryContext {
    onSourceContext: (imageId: string, cellMeasurer: any, imageMeasurer: any) => void;
}
export interface ImageGalleryViewableItem {
    readonly index: number;
    readonly item: ImageGallerySource;
    readonly key: string;
    readonly isViewable: boolean;
}