import { type Coverage } from "../../layout/structures/coverage.ts";
import { type DeviceOrVariationIndex } from "../../layout/structures/device.ts";
import type { GlyphId, int16, uint16 } from "../../types.ts";
import type { Reader } from "../binary/reader.ts";
/**
 * MATH table - Mathematical typesetting data
 * Provides metrics and glyph information for math layout
 */
/** MathValueRecord - value with optional device correction */
export interface MathValueRecord {
    value: int16;
    device: DeviceOrVariationIndex | null;
}
/** MathConstants - global math constants */
export interface MathConstants {
    scriptPercentScaleDown: int16;
    scriptScriptPercentScaleDown: int16;
    delimitedSubFormulaMinHeight: uint16;
    displayOperatorMinHeight: uint16;
    mathLeading: MathValueRecord;
    axisHeight: MathValueRecord;
    accentBaseHeight: MathValueRecord;
    flattenedAccentBaseHeight: MathValueRecord;
    subscriptShiftDown: MathValueRecord;
    subscriptTopMax: MathValueRecord;
    subscriptBaselineDropMin: MathValueRecord;
    superscriptShiftUp: MathValueRecord;
    superscriptShiftUpCramped: MathValueRecord;
    superscriptBottomMin: MathValueRecord;
    superscriptBaselineDropMax: MathValueRecord;
    subSuperscriptGapMin: MathValueRecord;
    superscriptBottomMaxWithSubscript: MathValueRecord;
    spaceAfterScript: MathValueRecord;
    upperLimitGapMin: MathValueRecord;
    upperLimitBaselineRiseMin: MathValueRecord;
    lowerLimitGapMin: MathValueRecord;
    lowerLimitBaselineDropMin: MathValueRecord;
    stackTopShiftUp: MathValueRecord;
    stackTopDisplayStyleShiftUp: MathValueRecord;
    stackBottomShiftDown: MathValueRecord;
    stackBottomDisplayStyleShiftDown: MathValueRecord;
    stackGapMin: MathValueRecord;
    stackDisplayStyleGapMin: MathValueRecord;
    stretchStackTopShiftUp: MathValueRecord;
    stretchStackBottomShiftDown: MathValueRecord;
    stretchStackGapAboveMin: MathValueRecord;
    stretchStackGapBelowMin: MathValueRecord;
    fractionNumeratorShiftUp: MathValueRecord;
    fractionNumeratorDisplayStyleShiftUp: MathValueRecord;
    fractionDenominatorShiftDown: MathValueRecord;
    fractionDenominatorDisplayStyleShiftDown: MathValueRecord;
    fractionNumeratorGapMin: MathValueRecord;
    fractionNumDisplayStyleGapMin: MathValueRecord;
    fractionRuleThickness: MathValueRecord;
    fractionDenominatorGapMin: MathValueRecord;
    fractionDenomDisplayStyleGapMin: MathValueRecord;
    skewedFractionHorizontalGap: MathValueRecord;
    skewedFractionVerticalGap: MathValueRecord;
    overbarVerticalGap: MathValueRecord;
    overbarRuleThickness: MathValueRecord;
    overbarExtraAscender: MathValueRecord;
    underbarVerticalGap: MathValueRecord;
    underbarRuleThickness: MathValueRecord;
    underbarExtraDescender: MathValueRecord;
    radicalVerticalGap: MathValueRecord;
    radicalDisplayStyleVerticalGap: MathValueRecord;
    radicalRuleThickness: MathValueRecord;
    radicalExtraAscender: MathValueRecord;
    radicalKernBeforeDegree: MathValueRecord;
    radicalKernAfterDegree: MathValueRecord;
    radicalDegreeBottomRaisePercent: int16;
}
/** Italic correction info */
export interface MathItalicsCorrection {
    coverage: Coverage;
    values: MathValueRecord[];
}
/** Top accent attachment */
export interface MathTopAccentAttachment {
    coverage: Coverage;
    values: MathValueRecord[];
}
/** Extended shape coverage */
export interface ExtendedShapeCoverage {
    coverage: Coverage;
}
/** Math kern record for corner kerns */
export interface MathKernRecord {
    correctionHeights: MathValueRecord[];
    kernValues: MathValueRecord[];
}
/** Math kern info for a glyph */
export interface MathKernInfo {
    topRight: MathKernRecord | null;
    topLeft: MathKernRecord | null;
    bottomRight: MathKernRecord | null;
    bottomLeft: MathKernRecord | null;
}
/** Math kern info table */
export interface MathKernInfoTable {
    coverage: Coverage;
    kernInfo: MathKernInfo[];
}
/** MathGlyphInfo - per-glyph math info */
export interface MathGlyphInfo {
    italicsCorrection: MathItalicsCorrection | null;
    topAccentAttachment: MathTopAccentAttachment | null;
    extendedShapeCoverage: ExtendedShapeCoverage | null;
    kernInfo: MathKernInfoTable | null;
}
/** Glyph part record for assembly */
export interface GlyphPartRecord {
    glyphId: GlyphId;
    startConnectorLength: uint16;
    endConnectorLength: uint16;
    fullAdvance: uint16;
    partFlags: uint16;
}
/** Glyph assembly */
export interface GlyphAssembly {
    italicsCorrection: MathValueRecord;
    parts: GlyphPartRecord[];
}
/** Math glyph construction */
export interface MathGlyphConstruction {
    glyphAssembly: GlyphAssembly | null;
    variants: Array<{
        variantGlyph: GlyphId;
        advanceMeasurement: uint16;
    }>;
}
/** MathVariants - glyph variants and construction */
export interface MathVariants {
    minConnectorOverlap: uint16;
    vertGlyphCoverage: Coverage | null;
    horizGlyphCoverage: Coverage | null;
    vertGlyphConstruction: MathGlyphConstruction[];
    horizGlyphConstruction: MathGlyphConstruction[];
}
/** MATH table */
export interface MathTable {
    majorVersion: uint16;
    minorVersion: uint16;
    constants: MathConstants | null;
    glyphInfo: MathGlyphInfo | null;
    variants: MathVariants | null;
}
export declare function parseMath(reader: Reader): MathTable;
/** Get italic correction for a glyph */
export declare function getItalicsCorrection(math: MathTable, glyphId: GlyphId): MathValueRecord | null;
/** Get top accent attachment for a glyph */
export declare function getTopAccentAttachment(math: MathTable, glyphId: GlyphId): MathValueRecord | null;
/** Check if glyph is an extended shape */
export declare function isExtendedShape(math: MathTable, glyphId: GlyphId): boolean;
/** Get vertical glyph variants */
export declare function getVerticalVariants(math: MathTable, glyphId: GlyphId): Array<{
    variantGlyph: GlyphId;
    advanceMeasurement: uint16;
}> | null;
/** Get horizontal glyph variants */
export declare function getHorizontalVariants(math: MathTable, glyphId: GlyphId): Array<{
    variantGlyph: GlyphId;
    advanceMeasurement: uint16;
}> | null;
/** Get vertical glyph assembly */
export declare function getVerticalAssembly(math: MathTable, glyphId: GlyphId): GlyphAssembly | null;
/** Get horizontal glyph assembly */
export declare function getHorizontalAssembly(math: MathTable, glyphId: GlyphId): GlyphAssembly | null;