/**
 * @internal
 */
interface WrapperDimensions {
    height: number;
    width: number;
}
/**
 * @internal
 */
export declare function getPx(value: number): string;
/**
 * @internal
 */
export declare function isASmallImage(widthPx: number, heightPx: number): boolean;
/**
 * @internal Calculate the rotated x and y distance for mouse moving
 * @param x Original x distance
 * @param y Original y distance
 * @param angle Rotated angle, in radian
 * @returns rotated x and y distances
 */
export declare function rotateCoordinate(x: number, y: number, angle: number): [number, number];
/**
 * @internal
 */
export declare function setFlipped(element: HTMLElement | null, flippedHorizontally?: boolean, flippedVertically?: boolean): void;
/**
 * @internal
 */
export declare function setWrapperSizeDimensions(wrapper: HTMLElement, image: HTMLImageElement, width: number, height: number, isRotating: boolean): void;
/**
 * @internal
 */
export declare function setSize(element: HTMLElement, left: number | undefined, top: number | undefined, right: number | undefined, bottom: number | undefined, width: number | undefined, height: number | undefined): void;
/**
 * @internal
 * Check if the current image was resized by the user
 * @param image the current image
 * @returns if the user resized the image, returns true, otherwise, returns false
 */
export declare function checkIfImageWasResized(image: HTMLImageElement): boolean;
/**
 * @internal
 */
export declare function getActualWrapperDimensions(image: HTMLImageElement, wrapperWidth: number, wrapperHeight: number): WrapperDimensions;
export {};