import type { UILayer } from "../../layers/UILayer/UILayer";
import { UIColor } from "../../miscellaneous/color/UIColor";
import type { UIColorConfig } from "../../miscellaneous/color/UIColor.Internal";
import type { UIProgressMaskFunction } from "../../miscellaneous/mask-function/UIProgressMaskFunction";
import { UITextureView } from "../../miscellaneous/texture/UITextureView";
import type { UITextureConfig } from "../../miscellaneous/texture/UITextureView.Internal";
import { UIElement } from "../UIElement/UIElement";
import type { UIProgressOptions } from "./UIProgress.Internal";
/** Progress bar with customizable fill direction */
export declare class UIProgress extends UIElement {
    /** Texture displayed by this element */
    readonly texture: UITextureView;
    private readonly colorInternal;
    private readonly textureTransform;
    private readonly textureResolution;
    private maskFunctionInternal;
    private progressInternal;
    private progressDirty;
    private textureResolutionDirty;
    /**
     * Creates a new UIProgress instance.
     *
     * Defaults size to texture dimensions if width and height not provided.
     *
     * @param layer - Layer containing this element
     * @param texture - Texture to display
     * @param options - Configuration options
     */
    constructor(layer: UILayer, texture: UITextureConfig, options?: Partial<UIProgressOptions>);
    /** Multiplicative tint. Alpha channel controls opacity. */
    get color(): UIColor;
    /** Function controlling fill direction and shape */
    get maskFunction(): UIProgressMaskFunction;
    /** Progress from 0 (empty) to 1 (full) */
    get progress(): number;
    /** Multiplicative tint. Alpha channel controls opacity. */
    set color(value: UIColorConfig);
    /** Function controlling fill direction and shape */
    set maskFunction(value: UIProgressMaskFunction);
    /** Progress from 0 (empty) to 1 (full). Clamped. */
    set progress(value: number);
    /** Removes element and frees resources */
    destroy(): void;
    protected setPlaneTransform(): void;
    private readonly onTextureDimensionsChanged;
    private rebuildPlane;
}