import type { UILayer } from "../../layers/UILayer/UILayer";
import { UIColor } from "../../miscellaneous/color/UIColor";
import type { UIColorConfig } from "../../miscellaneous/color/UIColor.Internal";
import { UIInsets } from "../../miscellaneous/insets/UIInsets";
import type { UIInsetsConfig } from "../../miscellaneous/insets/UIInsets.Internal";
import { UITextureView } from "../../miscellaneous/texture/UITextureView";
import type { UITextureConfig } from "../../miscellaneous/texture/UITextureView.Internal";
import { UIElement } from "../UIElement/UIElement";
import type { UINineSliceOptions } from "./UINineSlice.Internal";
import { UINineSliceRegionMode } from "./UINineSlice.Internal";
/** Scalable textured image preserving border regions */
export declare class UINineSlice extends UIElement {
    /** Texture displayed by this element */
    readonly texture: UITextureView;
    private readonly colorInternal;
    private readonly sliceBordersInternal;
    private readonly sliceRegionsInternal;
    private regionModeInternal;
    private regionModeDirty;
    private readonly textureTransform;
    private readonly sliceBordersVector;
    private readonly sliceRegionsVector;
    private lastElementWidth;
    private lastElementHeight;
    private textureDimensionsDirty;
    /**
     * Creates a new UINineSlice 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<UINineSliceOptions>);
    /** Multiplicative tint. Alpha channel controls opacity. */
    get color(): UIColor;
    /** Controls how sliceRegions values are interpreted */
    get regionMode(): UINineSliceRegionMode;
    /** Border size in normalized texture coordinates (0 to 1) */
    get sliceBorders(): UIInsets;
    /** Region size. Interpretation depends on regionMode. */
    get sliceRegions(): UIInsets;
    /** Multiplicative tint. Alpha channel controls opacity. */
    set color(value: UIColorConfig);
    /** Controls how sliceRegions values are interpreted */
    set regionMode(value: UINineSliceRegionMode);
    /** Border size in normalized texture coordinates (0 to 1) */
    set sliceBorders(value: UIInsetsConfig);
    /** Region size. Interpretation depends on regionMode. */
    set sliceRegions(value: UIInsetsConfig);
    /** Removes nine slice and frees resources */
    destroy(): void;
    protected setPlaneTransform(): void;
    private calculateSliceBordersForShader;
    private calculateSliceRegionsForShader;
    private checkElementDimensionsDirty;
    private setElementDimensionsDirtyFalse;
    private readonly onTextureDimensionsChanged;
}