/**
 * ImagePreview - 可配置的图片预览工具
 * 支持淡入淡出、3D翻转等过渡动画，支持丰富的配置项
 */
/** 过渡动画类型 */
export type ImageTransition = "fade" | "slide" | "zoom" | "flip3d" | "none";
/** 图片预览配置 */
export interface ImagePreviewOptions {
    /** 过渡动画类型，默认 fade */
    transition?: ImageTransition;
    /** 过渡动画时长(ms)，默认 300 */
    transitionDuration?: number;
    /** 背景色，默认 rgba(0,0,0,0.85) */
    overlayBackground?: string;
    /** 是否显示工具栏，默认 true */
    showToolbar?: boolean;
    /** 是否显示缩略图栏，默认 true（多图时） */
    showThumbnails?: boolean;
    /** 是否显示左右箭头，默认 true（多图时） */
    showArrows?: boolean;
    /** 是否启用键盘导航，默认 true */
    keyboardNavigation?: boolean;
    /** 是否启用鼠标滚轮缩放，默认 true */
    wheelZoom?: boolean;
    /** 是否启用拖拽平移，默认 true */
    draggable?: boolean;
    /** 初始索引，默认 0 */
    initialIndex?: number;
    /** 缩略图高度(px)，默认 48 */
    thumbnailSize?: number;
    /** 箭头大小(px)，默认 52 */
    arrowSize?: number;
    /** 关闭回调 */
    onClose?: () => void;
    /** 切换回调 */
    onSwitch?: (index: number) => void;
}
export declare class ImagePreview {
    private images;
    private options;
    private currentIndex;
    private scale;
    private rotation;
    private translateX;
    private translateY;
    private isDragging;
    private dragStartX;
    private dragStartY;
    private isTransitioning;
    private overlay;
    private imgWrap;
    private img;
    private imgBack;
    private toolbar;
    private thumbBar;
    private counter;
    private arrowLeft;
    private arrowRight;
    private prevBtn;
    private nextBtn;
    private thumbs;
    private boundOnMouseMove;
    private boundOnMouseUp;
    private boundOnKeydown;
    constructor(images: string | string[], options?: ImagePreviewOptions);
    /** 关闭预览 */
    close(): void;
    /** 切换到指定索引 */
    goTo(index: number): void;
    /** 上一张 */
    prev(): void;
    /** 下一张 */
    next(): void;
    private build;
    private buildToolbar;
    private buildThumbnails;
    private buildArrows;
    private loadImage;
    /** 淡入淡出 */
    private transitionFade;
    /** 滑动切换 */
    private transitionSlide;
    /** 缩放切换 */
    private transitionZoom;
    /** 3D翻转 */
    private transitionFlip3d;
    private bindEvents;
    private onMouseMove;
    private onMouseUp;
    private onKeydown;
    private resetTransform;
    private updateImgTransform;
    private updateUI;
    private updateThumbActive;
    private downloadImage;
    private cleanup;
    private el;
    private createBtn;
}
/**
 * 兼容旧接口 - 图片预览
 * @param images 图片URL数组或单个URL
 * @param options 预览配置
 */
export declare function imagesPreview(images: Array<string> | string, options?: ImagePreviewOptions): ImagePreview;