import type { ImageSourcePropType } from 'react-native';
export interface GalleryItem {
    id: string;
    /** Remote image URI, or a bundled asset from `require('./photo.png')` */
    uri: string | ImageSourcePropType;
    title?: string;
    description?: string;
    metadata?: {
        size?: string;
        dimensions?: {
            width: number;
            height: number;
        };
        dateCreated?: string;
        camera?: string;
        location?: string;
        [key: string]: any;
    };
}
export interface GalleryProps {
    /** Array of images to display in the gallery. */
    images: GalleryItem[];
    /**
     * Index of the image shown when the gallery first opens.
     * @default 0
     */
    initialIndex?: number;
    /** Called when the gallery is closed. */
    onClose?: () => void;
    /** Called when the active image changes, receiving the new index and image. */
    onImageChange?: (index: number, image: GalleryItem) => void;
    /** Called when the download action is triggered for the current image. */
    onDownload?: (image: GalleryItem) => void;
    /**
     * Whether to display the metadata panel for the current image.
     * @default false
     */
    showMetadata?: boolean;
    /**
     * Whether to display the thumbnail strip for navigating between images.
     * @default true
     */
    showThumbnails?: boolean;
    /**
     * Whether to display the download button in the gallery controls.
     * @default true
     */
    showDownloadButton?: boolean;
    /**
     * Whether arrow keys and Escape can be used to navigate and close the gallery.
     * @default true
     */
    allowKeyboardNavigation?: boolean;
    /**
     * Whether swipe gestures can be used to move between images.
     * @default true
     */
    allowSwipeNavigation?: boolean;
    /**
     * Opacity of the backdrop overlay behind the gallery, from 0 to 1.
     * @default 0.9
     */
    overlayOpacity?: number;
    /**
     * Duration of open/close and transition animations, in milliseconds.
     * @default 250
     */
    animationDuration?: number;
}
export interface GalleryModalProps extends GalleryProps {
    visible: boolean;
}
export interface GalleryThumbnailProps {
    images: GalleryItem[];
    currentIndex: number;
    onThumbnailPress: (index: number) => void;
    thumbnailSize?: number;
}
export interface GalleryImageProps {
    image: GalleryItem;
    onLoad?: () => void;
    onError?: () => void;
    resizeMode?: 'contain' | 'cover' | 'stretch' | 'center';
}
export interface GalleryControlsProps {
    currentIndex: number;
    totalImages: number;
    onPrevious: () => void;
    onNext: () => void;
    onClose: () => void;
    onDownload?: () => void;
    showDownloadButton?: boolean;
    image?: GalleryItem;
}
export interface GalleryMetadataProps {
    image: GalleryItem;
    visible: boolean;
}
export type GalleryNavigationDirection = 'previous' | 'next';
export interface GalleryGestureState {
    translationX: number;
    translationY: number;
    velocityX: number;
    velocityY: number;
    scale: number;
}