import type { Tag } from "../../types.ts";
import type { Reader } from "../binary/reader.ts";
import { type ItemVariationStore } from "./hvar.ts";
/**
 * Metrics Variations table (MVAR)
 * Provides variations for global font metrics
 */
export interface MvarTable {
    majorVersion: number;
    minorVersion: number;
    itemVariationStore: ItemVariationStore;
    valueRecords: MvarValueRecord[];
}
export interface MvarValueRecord {
    valueTag: Tag;
    deltaSetOuterIndex: number;
    deltaSetInnerIndex: number;
}
/**
 * Common MVAR value tags
 */
export declare const MvarTags: {
    readonly hasc: number;
    readonly hdsc: number;
    readonly hlgp: number;
    readonly hcla: number;
    readonly hcld: number;
    readonly hcof: number;
    readonly hcrn: number;
    readonly hcrs: number;
    readonly vasc: number;
    readonly vdsc: number;
    readonly vlgp: number;
    readonly vcof: number;
    readonly vcrn: number;
    readonly vcrs: number;
    readonly xhgt: number;
    readonly cpht: number;
    readonly sbxs: number;
    readonly sbys: number;
    readonly sbxo: number;
    readonly sbyo: number;
    readonly spxs: number;
    readonly spys: number;
    readonly spxo: number;
    readonly spyo: number;
    readonly strs: number;
    readonly stro: number;
    readonly undo: number;
    readonly unds: number;
    readonly gsp0: number;
    readonly gsp1: number;
    readonly gsp2: number;
    readonly gsp3: number;
};
/**
 * Parse MVAR table
 */
export declare function parseMvar(reader: Reader): MvarTable;
/**
 * Get metric delta by tag
 */
export declare function getMetricDelta(mvar: MvarTable, valueTag: Tag, coords: number[]): number;
/**
 * Get horizontal ascender delta
 */
export declare function getHAscenderDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get horizontal descender delta
 */
export declare function getHDescenderDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get horizontal line gap delta
 */
export declare function getHLineGapDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get x-height delta
 */
export declare function getXHeightDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get cap height delta
 */
export declare function getCapHeightDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get underline offset delta
 */
export declare function getUnderlineOffsetDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get underline size delta
 */
export declare function getUnderlineSizeDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get strikeout offset delta
 */
export declare function getStrikeoutOffsetDelta(mvar: MvarTable, coords: number[]): number;
/**
 * Get strikeout size delta
 */
export declare function getStrikeoutSizeDelta(mvar: MvarTable, coords: number[]): number;