import { FontMetricTable, FontSelector, StandardFontId } from './standard-metrics';
export interface RegisteredFont {
    id: string;
    postScriptName: string;
    metrics: FontMetricTable;
    resourceName: string;
}
export interface TextMeasureOptions {
    fontSize: number;
    characterSpacing?: number;
    wordSpacing?: number;
    horizontalScale?: number;
}
export declare class FontRegistry {
    private readonly fonts;
    private resourceCounter;
    resolve(selector: FontSelector): RegisteredFont;
    register(postScriptName: StandardFontId): RegisteredFont;
    all(): RegisteredFont[];
}
export declare function measureTextWidth(font: RegisteredFont, text: string, options: TextMeasureOptions): number;
export declare function measureCharacterWidths(font: RegisteredFont, text: string, options: TextMeasureOptions): number[];
export declare function fontAscent(font: RegisteredFont, fontSize: number): number;
export declare function fontDescent(font: RegisteredFont, fontSize: number): number;