import { type DataWriter } from '../data-writer.ts';
import { TableBuilder } from '../table-builder.ts';
/**
 * Bit flags for the font selection flags used in the fsSelection field
 * of the OS/2 table.
 *
 * See https://learn.microsoft.com/en-us/typography/opentype/spec/os2#fsselection
 */
export declare const FsSelection: {
    /** Font contains italic or oblique glyphs, otherwise they are upright. */
    readonly ITALIC: 1;
    /** Glyphs are underscored. */
    readonly UNDERSCORE: 2;
    /** Glyphs have their foreground and background reversed. */
    readonly NEGATIVE: 4;
    /** Outline (hollow) glyphs, otherwise they are solid. */
    readonly OUTLINED: 8;
    /** Glyphs are overstruck. */
    readonly STRIKEOUT: 16;
    /** Glyphs are emboldened. */
    readonly BOLD: 32;
    /** Glyphs are in the standard weight/style for the font. */
    readonly REGULAR: 64;
    /** If set, it is strongly recommended that applications use OS/2.sTypoAscender - OS/2.sTypoDescender + OS/2.sTypoLineGap as the default line spacing for this font. */
    readonly USE_TYPO_METRICS: 128;
    /** The font has 'name' table strings consistent with a weight/width/slope family without requiring use of name IDs 21 and 22. */
    readonly WWS: 256;
    /** Font contains oblique glyphs. */
    readonly OBLIQUE: 512;
};
/**
 * The OS/2 table contains metrics and other data used by Windows and
 * some other platforms. It is essential for proper font embedding in PDFs,
 * as it includes fields for font weight, width, and embedding licensing flags.
 */
export declare class Os2Table {
    readonly version: number;
    readonly xAvgCharWidth: number;
    readonly usWeightClass: number;
    readonly usWidthClass: number;
    readonly fsType: number;
    readonly ySubscriptXSize: number;
    readonly ySubscriptYSize: number;
    readonly ySubscriptXOffset: number;
    readonly ySubscriptYOffset: number;
    readonly ySuperscriptXSize: number;
    readonly ySuperscriptYSize: number;
    readonly ySuperscriptXOffset: number;
    readonly ySuperscriptYOffset: number;
    readonly yStrikeoutSize: number;
    readonly yStrikeoutPosition: number;
    readonly sFamilyClass: number;
    readonly panose: number[];
    readonly ulUnicodeRange1: number;
    readonly ulUnicodeRange2: number;
    readonly ulUnicodeRange3: number;
    readonly ulUnicodeRange4: number;
    readonly achVendID: string;
    readonly fsSelection: number;
    readonly usFirstCharIndex: number;
    readonly usLastCharIndex: number;
    readonly sTypoAscender?: number;
    readonly sTypoDescender?: number;
    readonly sTypoLineGap?: number;
    readonly usWinAscent?: number;
    readonly usWinDescent?: number;
    readonly ulCodePageRange1?: number;
    readonly ulCodePageRange2?: number;
    readonly sxHeight?: number;
    readonly sCapHeight?: number;
    readonly usDefaultChar?: number;
    readonly usBreakChar?: number;
    readonly usMaxContext?: number;
    readonly usLowerOpticalPointSize?: number;
    readonly usUpperOpticalPointSize?: number;
    /**
     * Reads an OS/2 table from the given DataView.
     */
    static read(data: DataView): Os2Table;
    private constructor();
}
/**
 * Builder for the OS/2 table.
 *
 * The version determines which fields are written:
 * - Version 0: Base fields only (up to usLastCharIndex, plus optional sTypoAscender..usWinDescent)
 * - Version 1: Adds ulCodePageRange1/2
 * - Version 2-4: Adds sxHeight, sCapHeight, usDefaultChar, usBreakChar, usMaxContext
 * - Version 5: Adds usLowerOpticalPointSize, usUpperOpticalPointSize
 */
export declare class Os2TableBuilder extends TableBuilder {
    version: number;
    xAvgCharWidth: number;
    usWeightClass: number;
    usWidthClass: number;
    fsType: number;
    ySubscriptXSize: number;
    ySubscriptYSize: number;
    ySubscriptXOffset: number;
    ySubscriptYOffset: number;
    ySuperscriptXSize: number;
    ySuperscriptYSize: number;
    ySuperscriptXOffset: number;
    ySuperscriptYOffset: number;
    yStrikeoutSize: number;
    yStrikeoutPosition: number;
    sFamilyClass: number;
    panose: number[];
    ulUnicodeRange1: number;
    ulUnicodeRange2: number;
    ulUnicodeRange3: number;
    ulUnicodeRange4: number;
    achVendID: string;
    fsSelection: number;
    usFirstCharIndex: number;
    usLastCharIndex: number;
    sTypoAscender: number;
    sTypoDescender: number;
    sTypoLineGap: number;
    usWinAscent: number;
    usWinDescent: number;
    ulCodePageRange1: number;
    ulCodePageRange2: number;
    sxHeight: number;
    sCapHeight: number;
    usDefaultChar: number;
    usBreakChar: number;
    usMaxContext: number;
    usLowerOpticalPointSize: number;
    usUpperOpticalPointSize: number;
    constructor(init?: Os2Table);
    writeTable(writer: DataWriter): void;
}
/**
 * Embedding licensing flags for fsType field.
 * Can be combined with bitwise OR.
 */
export declare const FsType: {
    /** Installable embedding */
    readonly installable: 0;
    /** Restricted License embedding */
    readonly restricted: 2;
    /** Preview & Print embedding */
    readonly previewAndPrint: 4;
    /** Editable embedding */
    readonly editable: 8;
    /** No subsetting */
    readonly noSubsetting: 256;
    /** Bitmap embedding only */
    readonly bitmapOnly: 512;
};