import Color from "../utils/color";
import Texture from "./texture";
export declare enum GradientType {
    LINEAR = 0,
    RADIAL = 1
}
export declare enum GradientDirection {
    RIGHT_TO_LEFT = 0,
    LEFT_TO_RIGHT = 1,
    TOP_TO_BOTTOM = 2,
    BOTTOM_TO_TOP = 3,
    BR_TO_TL = 4,
    BL_TO_TR = 5
}
/**
 * Represents a color stop on the canvas gradient.
 *
 * @field `offset` Where the stop is along the gradient (between 0 and 1).
 * @field `color` The color at the stop
 */
export interface ColorStop {
    offset: number;
    color: Color;
}
/**
 * Represents a texture with a gradient as it's image.
 */
export default class GradientTexture extends Texture {
    stops: ColorStop[];
    resolution: number;
    type: GradientType;
    direction: GradientDirection;
    private static canvas;
    private static ctx;
    /**
     * Creates a {@link GradientTexture}.
     *
     * Before use the texture must be refreshed, this is done by calling the `refresh()` method on the texture.
     *
     * @param type The type of gradient (linear, radial, etc)
     * @param dir The direction fo the gradient
     * @param resolution The quality of the gradient
     * @param stops The color stops in the gradient
     */
    constructor(type: GradientType, dir: GradientDirection, resolution: number, ...stops: ColorStop[]);
    /**
     * Regenerates the gradient image.
     *
     * @returns A promise which is resolved when the gradient has been loaded into the texture's image.
     */
    refresh(): Promise<void>;
    /**
     * Creates the canvas gradient fill for this {@link GradientTexture}.
     *
     * @returns The created gradient and dimensions of the gradient
     */
    createGradient(): {
        gradient: CanvasGradient;
        width: number;
        height: number;
    };
}