import type { UIHeightConstraint } from "../core";
import { UIColor } from "../core";
import type { UIConstraintDebug } from "./UIConstraintDebug";
export declare class UIHeightDebug implements UIConstraintDebug {
    readonly constraint: UIHeightConstraint;
    readonly tint: UIColor;
    private readonly container;
    private readonly lineMaterial;
    private readonly lineGeometry;
    private readonly line;
    private readonly textSprite;
    private readonly textTexture;
    private readonly spriteMaterial;
    private readonly canvas;
    private readonly context;
    private visibleInternal;
    private lastRenderedText;
    constructor(constraint: UIHeightConstraint);
    get visible(): boolean;
    set visible(value: boolean);
    destroy(): void;
    private updateContainerVisibility;
    private readonly onOrientationChanged;
    private readonly onRendering;
    private drawText;
}