import { AlphaType, ColorType, PAGScaleMode } from './types';
import { Matrix } from './core/matrix';
export declare class PAGImage {
    /**
     * Create pag image from image file.
     */
    static fromFile(data: File): Promise<PAGImage>;
    /**
     * Create pag image from image source or video source.
     * Make sure the target pixel is shown on the screen.
     * Like
     * ``` javascript
     * Image.onload = async () => {
     *   return await PAGImage.fromSource(Image)
     * }
     * ```
     */
    static fromSource(source: TexImageSource): PAGImage;
    /**
     *  Creates a PAGImage object from an array of pixel data, return null if it's not valid pixels.
     */
    static fromPixels(pixels: Uint8Array, width: number, height: number, colorType: ColorType, alphaType: AlphaType): PAGImage;
    /**
     * Creates a PAGImage object from the specified backend texture, return null if the texture is
     * invalid.
     */
    static fromTexture(textureID: number, width: number, height: number, flipY: boolean): PAGImage;
    wasmIns: any;
    isDestroyed: boolean;
    constructor(wasmIns: any);
    /**
     * Returns the width in pixels.
     */
    width(): number;
    /**
     * Returns the height in pixels.
     */
    height(): number;
    /**
     * Returns the current scale mode. The default value is PAGScaleMode::LetterBox.
     */
    scaleMode(): PAGScaleMode;
    /**
     * Specifies the rule of how to scale the content to fit the image layer's original size.
     * The matrix changes when this method is called.
     */
    setScaleMode(scaleMode: PAGScaleMode): void;
    /**
     * Returns a copy of current matrix.
     */
    matrix(): Matrix;
    /**
     * Set the transformation which will be applied to the content.
     * The scaleMode property will be set to PAGScaleMode::None when this method is called.
     */
    setMatrix(matrix: Matrix): void;
    /**
     * Destroy the pag image.
     */
    destroy(): void;
}