/**
 * Utility functions for calculating menu position with boundary constraints.
 * Used by both text selection menu and annotation selection menu.
 */
import type { RectBox } from './types';
export interface VisibleAreaInput {
    containerRect: DOMRect | null;
    textLayerRect: DOMRect | null;
    viewportWidth: number;
    viewportHeight: number;
}
export interface VisibleArea {
    left: number;
    top: number;
    right: number;
    bottom: number;
}
export interface MenuBoundsInput extends RectBox {
    yTop: number;
    visibleArea: VisibleArea;
}
export interface SelectionBounds extends RectBox {
    flipped: boolean;
}
export declare const MENU_WIDTH = 220;
export declare const MENU_HEIGHT = 44;
export declare const MENU_OFFSET = 8;
export declare const MENU_PADDING = 8;
/**
 * Calculate visible area of the page within the viewport container.
 * Returns bounds in page-relative coordinates.
 */
export declare function calculateVisibleArea(input: VisibleAreaInput): VisibleArea;
/**
 * Calculate menu position with boundary constraints.
 * - Horizontal: shifts menu left/right to stay within visible area
 * - Vertical: flips menu above selection if it would overflow bottom
 */
export declare function calculateMenuBounds(input: MenuBoundsInput): SelectionBounds;