import type { CropCanvasHandle } from "../../CropCanvas.js";
import type { EditAction } from "../../types.js";
import { type Quad } from "../../useEdgeDetection.js";
export interface ApplyCropResult {
    blob: Blob;
    actions: EditAction[];
}
/**
 * `corners` — drag the four corner/edge handles of the current selection.
 * `rect` — drag out a brand new axis-aligned rectangle.
 */
export type CropMode = "corners" | "rect";
export interface CropToolState {
    activeCorners: Quad;
    mode: CropMode;
    /** False while the user is in rect mode and has not drawn a rectangle yet. */
    hasSelection: boolean;
    scale: number;
    displaySize: {
        width: number;
        height: number;
    };
    canvasRef: React.RefObject<CropCanvasHandle | null>;
    cvReady: boolean;
    cvError: Error | null;
    cropping: boolean;
    error: string | null;
    handleCanvasReady: (canvas: HTMLCanvasElement, w: number, h: number) => void;
    updateCorner: (index: number, screenX: number, screenY: number) => void;
    /** Enters rect mode, temporarily clearing (and remembering) the current selection. */
    startRectMode: () => void;
    /** Leaves rect mode without drawing, restoring the selection that was active before. */
    cancelRectMode: () => void;
    startRectDraw: (screenX: number, screenY: number) => void;
    updateRectDraw: (screenX: number, screenY: number) => void;
    finishRectDraw: () => void;
    applyCrop: () => Promise<ApplyCropResult | null>;
}
/**
 * Manages all state and logic for the crop tool.
 * OpenCV is loaded lazily for corner suggestion and perspective warping, but is optional:
 * when it fails to load the tool stays fully usable, only the suggested border is missing.
 */
export declare function useCropTool(imageUrl: string, enabled: boolean): CropToolState;
/**
 * Standalone replay handler for the "crop" action type.
 * Corners are stored as relative (0–1) values so they work at any resolution.
 * Rectangular crops replay without OpenCV; older actions without a stored mode
 * are treated as perspective crops.
 */
export declare function replayCrop(imageUrl: string, params: Record<string, unknown>): Promise<Blob>;