niimbotlib
Version:
Library for the communication with NIIMBOT printers
32 lines (31 loc) • 1.08 kB
TypeScript
/** @category Image encoder */
export type ImageRow = {
dataType: "void" | "pixels" | "check";
rowNumber: number;
repeat: number;
blackPixelsCount: number;
rowData?: Uint8Array;
};
/** @category Image encoder */
export type EncodedImage = {
cols: number;
rows: number;
rowsData: ImageRow[];
};
/** @category Image encoder */
export type PrintDirection = "left" | "top";
/**
* @category Helpers
* @category Image encoder
*/
export declare class ImageEncoder {
/** printDirection = "left" rotates image for 90 degrees clockwise */
static encodeCanvas(canvas: HTMLCanvasElement, printDirection?: PrintDirection): EncodedImage;
/** printDirection = "left" rotates image to 90 degrees clockwise */
static isPixelNonWhite(iData: ImageData, x: number, y: number, printDirection?: PrintDirection): boolean;
/**
* @param data Pixels encoded by {@link encodeCanvas} (byte is 8 pixels)
* @returns Array of indexes where every index stored in two bytes (big endian)
*/
static indexPixels(data: Uint8Array): Uint8Array;
}