import type * as Template from '../serial/serial-types';
import { Matrix } from 'transformation-matrix';
import { RectangleSprite } from '../controllers/sprites/Rectangle';
import { OvalSprite } from '../controllers/sprites/Oval';
import { PolygonSprite } from '../controllers/sprites/Polygon';
import { ImageSprite } from '../controllers/sprites/Image';
import { DecomposedTransform } from '../util/layout';
import { AssetCollector } from './assets';
export declare function findImageChild(sprite: RectangleSprite | OvalSprite | PolygonSprite): ImageSprite | undefined;
export declare function fullImageElement(image: ImageSprite, transform: DecomposedTransform, collector: AssetCollector): Promise<Template.Element | null>;
/**
 * Heuristic: a rectangular frame containing an axis-aligned image becomes a
 * Bluepic image element with per-corner radius + a source-pixel crop. Falls
 * back to a mask for rotated images / non-rounded corners (handled by caller).
 */
export declare function imageFrameAsImage(frame: RectangleSprite, image: ImageSprite, pageMatrix: Matrix, transform: DecomposedTransform, collector: AssetCollector): Promise<Template.Element | null>;
/**
 * Mask fallback (oval / polygon / rotated frames): the frame outline clips the
 * image at its OWN placement (bbox + itemTransform), preserving IDML's intended
 * crop — the image is positioned against the mask shape, not refit to the frame.
 * The image's itemTransform is relative to the frame (nested), so its placement
 * is decompose(imageBaked) directly.
 */
export declare function imageFrameAsMask(frame: RectangleSprite | OvalSprite | PolygonSprite, image: ImageSprite, pageMatrix: Matrix, transform: DecomposedTransform, collector: AssetCollector): Promise<Template.Element | null>;
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