import { TextGlyph, TextLayoutOption } from '../types';
declare class TextLayout {
    static readonly X_HEIGHTS: string[];
    static readonly M_WIDTHS: string[];
    static readonly CAP_HEIGHTS: string[];
    static readonly TAB_ID: number;
    static readonly SPACE_ID: number;
    private _text;
    private _opt;
    private _fallbackSpaceGlyph;
    private _fallbackTabGlyph;
    private _glyphs?;
    private _width?;
    private _height?;
    private _descender?;
    private _ascender?;
    private _xHeight?;
    private _baseline?;
    private _capHeight?;
    private _lineHeight?;
    get text(): string;
    set text(value: string);
    get option(): TextLayoutOption;
    set option(value: TextLayoutOption);
    get glyphs(): TextGlyph[];
    get width(): number;
    get height(): number;
    get descender(): number;
    get ascender(): number;
    get xHeight(): number;
    get baseline(): number;
    get capHeight(): number;
    get lineHeight(): number;
    toString(): string;
    constructor(text: string, option?: any);
    update(text?: string, option?: any): void;
    private _setupSpaceGlyphs;
    private getGlyph;
    private computeMetrics;
    private getGlyphById;
    private getXHeight;
    private getMGlyph;
    private getCapHeight;
    private getKerning;
    private findChar;
}
export { TextLayout };
//# sourceMappingURL=TextLayout.d.ts.map