import { DibImage } from './dib.js';
import { PictureImage } from './picture.js';
/** How a blit's ROP wants the source drawn. */
export type BlitMode = 
/** SRCCOPY and its neighbours: the source replaces what is under it. */
'opaque'
/** SRCAND: a mask, held until the picture it belongs to arrives. */
 | 'mask'
/** SRCPAINT: ORed in, so the source's BLACK leaves the ground showing. */
 | 'or'
/** A ROP that ignores the source, or one whose result is not a picture. */
 | 'skip';
/** The destination rectangle a blit paints, in the metafile's own units. */
export interface BlitRect {
    readonly x: number;
    readonly y: number;
    readonly width: number;
    readonly height: number;
}
/**
 * What a ternary raster operation asks a reader to draw.
 *
 * @param rop The ROP code, as the record states it.
 */
export declare function blitMode(rop: number): BlitMode;
/**
 * A sink for a metafile's blits that puts the AND/OR pair back together.
 *
 * @param emit Where a finished picture goes — the reader's primitive list.
 */
export declare function makeBlitter(emit: (prim: PictureImage) => void): {
    blit: (img: DibImage, dest: BlitRect, rop: number) => void;
};