import type { FerrsignView2, FerrsignView3 } from "ferrsign";
import type { WebGLRenderer } from "three";
import type { UIPlaneElement } from "../../miscellaneous/shared";
import type { UIConstraint } from "../../constraints/UIConstraint";
import { UIInputWrapper } from "../../wrappers/UIInputWrapper/UIInputWrapper";
import type { UILayerMode, UILayerOptions, UILayerOrientation } from "./UILayer.Internal";
/** Base layer for UI rendering and layout management */
export declare abstract class UILayer implements UIPlaneElement {
    /** Optional layer name */
    name: string;
    /** Solver variable for x coordinate */
    readonly xVariable: number;
    /** Solver variable for y coordinate */
    readonly yVariable: number;
    /** Solver variable for width */
    readonly wVariable: number;
    /** Solver variable for height */
    readonly hVariable: number;
    protected readonly inputWrapperInternal: UIInputWrapper;
    private readonly solverWrapperInternal;
    private readonly sceneWrapperInternal;
    private modeInternal;
    private orientationInternal;
    private readonly signalOrientationChangedInternal;
    private readonly signalModeChangedInternal;
    private readonly signalRenderingInternal;
    private readonly signalResizedInternal;
    private readonly signalConstraintAddedInternal;
    private readonly signalConstraintRemovedInternal;
    private readonly constraintRegistryInternal;
    constructor(options: Partial<UILayerOptions>);
    /** X coordinate in world units (always 0 for layers) */
    get x(): number;
    /** Y coordinate in world units (always 0 for layers) */
    get y(): number;
    /** Layer width in world units */
    get width(): number;
    /** Layer height in world units */
    get height(): number;
    /** X coordinate of right edge */
    get oppositeX(): number;
    /** Y coordinate of top edge */
    get oppositeY(): number;
    /** X coordinate of horizontal center */
    get centerX(): number;
    /** Y coordinate of vertical center */
    get centerY(): number;
    /** Current visibility and interactivity mode */
    get mode(): UILayerMode;
    /** Current orientation based on aspect ratio */
    get orientation(): UILayerOrientation;
    /** Signal fired when orientation changes */
    get signalOrientationChanged(): FerrsignView2<UILayerOrientation, UILayer>;
    /** Signal fired when mode changes */
    get signalModeChanged(): FerrsignView2<UILayerMode, UILayer>;
    /** Signal fired during rendering */
    get signalRendering(): FerrsignView3<WebGLRenderer, number, UILayer>;
    /** Signal fired when layer resized */
    get signalResized(): FerrsignView3<number, number, UILayer>;
    /** Signal fired when a constraint is added */
    get signalConstraintAdded(): FerrsignView2<UILayer, UIConstraint>;
    /** Signal fired when a constraint is removed */
    get signalConstraintRemoved(): FerrsignView2<UILayer, UIConstraint>;
    /** Constraint registry */
    get constraintRegistry(): readonly UIConstraint[];
    /** Updates visibility and interactivity mode */
    set mode(value: UILayerMode);
    protected resizeInternal(width: number, height: number): void;
    protected renderInternal(renderer: WebGLRenderer, deltaTime: number): void;
}