import { IImageData } from '../types.ts';
import { Icon } from '../icon.ts';
/**
 * Icon entry.
 */
export interface IIconIcoEntry {
    /**
     * Icon width.
     */
    readonly width: number;
    /**
     * Icon height.
     */
    readonly height: number;
    /**
     * Icon data.
     */
    readonly data: Readonly<Uint8Array>;
}
/**
 * IconIco object.
 */
export declare class IconIco extends Icon {
    /**
     * List of icon entries.
     */
    entries: IIconIcoEntry[];
    /**
     * IconIco constructor.
     */
    constructor();
    /**
     * Add an icon from PNG data.
     *
     * @param data PNG data.
     * @param png Encode entry as PNG.
     * @param raw Use raw PNG data without re-encoding, if using PNG format.
     */
    addFromPng(data: Readonly<Uint8Array>, png?: boolean | null, raw?: boolean): Promise<void>;
    /**
     * Add an icon from RGBA image data.
     *
     * @param imageData RGBA image data.
     * @param png Encode entry as PNG.
     */
    addFromRgba(imageData: Readonly<IImageData>, png?: boolean | null): Promise<void>;
    /**
     * Encode icon.
     *
     * @returns Encoded icon.
     */
    encode(): Uint8Array;
    /**
     * Check if height requires legacy bitmap for compatiblity.
     *
     * @param width Image width.
     * @param height Image height.
     * @returns Returns true if requires legacy bitmap.
     */
    sizeRequiresLegacyBitmap(width: number, height: number): boolean;
    /**
     * Encode icon directory header.
     *
     * @param count Entry count.
     * @returns Encoded header.
     */
    protected _encodeIcoDir(count: number): Uint8Array;
    /**
     * Encode icon directory entry.
     *
     * @param entry Icon entry.
     * @param offset File offset.
     * @returns Encoded entry.
     */
    protected _encodeIcoDirEntry(entry: Readonly<IIconIcoEntry>, offset: number): Uint8Array;
    /**
     * Encode RGBA image to BMP data.
     *
     * @param imageData Image data.
     * @returns BMP data.
     */
    protected _encodeRgbaToBmp(imageData: Readonly<IImageData>): Uint8Array;
}