import { BoundingBox } from '../Collision/BoundingBox';
import { Color } from '../Color';
import { Font } from './Font';
import { FontTextInstance } from './FontTextInstance';
export declare class FontCache {
    static FONT_TIMEOUT: number;
    private static _LOGGER;
    private static _TEXT_USAGE;
    private static _TEXT_CACHE;
    private static _MEASURE_CACHE;
    static measureText(text: string, font: Font, maxWidth?: number): BoundingBox;
    static getTextInstance(text: string, font: Font, color: Color): FontTextInstance;
    static checkAndClearCache(): void;
    static get cacheSize(): number;
    /**
     * Force clear all cached text bitmaps
     */
    static clearCache(): void;
}