// Type definitions for png-async
// Project: https://github.com/kanreisa/node-png-async
// Definitions by: Yuki KAN <https://github.com/kanreisa>
// Definitions: https://github.com/borisyankov/DefinitelyTyped

/// <reference path="../node/node.d.ts" />

declare module 'png-async' {
    import stream = require('stream');

    export interface IImageOptions {
        width?: number;
        height?: number;
        fill?: boolean;
        checkCRC?: boolean;
        deflateChunkSize?: number;
        deflateLevel?: number;
        deflateStrategy?: EDeflateStrategy;
        filterType?: EFilterType;
    }

    export enum EDeflateStrategy {
        DEFAULT_STRATEGY = 0,
        FILTERED = 1,
        HUFFMAN_ONLY = 2,
        RLE = 3,
        FIXED = 4,
    }

    export enum EFilterType {
        Auto = -1,
        None = 0,
        Sub = 1,
        Up = 2,
        Average = 3,
        Paeth = 4,
    }

    export function createImage(option?: IImageOptions): Image;

    export class Image extends stream.Duplex {
        width: number;
        height: number;
        gamma: number;
        data: Buffer;
        constructor(option?: IImageOptions);
        pack(): Image;
        parse(data: Buffer, callback?: (err: Error, image: Image) => void): Image;
        write(data: any, cb?: any): boolean;
        end(data?: any): void;
        bitblt(dst: Image, sx: number, sy: number, w: number, h: number, dx: number, dy: number): Image;

        on(event: string, listener: Function): Image;
        once(event: string, listener: Function): Image;
        removeListener(event: string, listener: Function): Image;
        removeAllListeners(event: string): Image;
    }
}