import type { TextAlign, TextDirection, LineInfo, HyphenationPatternsMap } from '../types';
export declare enum ItemType {
    BOX = 0,// character or word with fixed width
    GLUE = 1,// stretchable/shrinkable space
    PENALTY = 2,// potential breakpoint with penalty cost
    DISCRETIONARY = 3
}
export declare enum FitnessClass {
    VERY_LOOSE = 0,// lines stretching more than their stretchability
    LOOSE = 1,// lines stretching 0.5 to 1.0 of their stretchability
    DECENT = 2,// all other lines
    TIGHT = 3
}
interface Item {
    type: ItemType;
    width: number;
    text?: string;
    originIndex?: number;
}
export interface Box extends Item {
    type: ItemType.BOX;
}
export interface Glue extends Item {
    type: ItemType.GLUE;
    stretch: number;
    shrink: number;
}
export interface Penalty extends Item {
    type: ItemType.PENALTY;
    penalty: number;
    flagged?: boolean;
}
export interface Discretionary extends Item {
    type: ItemType.DISCRETIONARY;
    preBreak: string;
    postBreak: string;
    noBreak: string;
    preBreakWidth: number;
    penalty: number;
    flagged?: boolean;
}
export interface LineBreakOptions {
    text: string;
    width?: number;
    align?: TextAlign;
    direction?: TextDirection;
    hyphenate?: boolean;
    language?: string;
    measureText: (text: string) => number;
    measureTextWidths?: (text: string) => number[];
    respectExistingBreaks?: boolean;
    hyphenationPatterns?: HyphenationPatternsMap;
    unitsPerEm?: number;
    letterSpacing?: number;
    tolerance?: number;
    pretolerance?: number;
    emergencyStretch?: number;
    autoEmergencyStretch?: number;
    lefthyphenmin?: number;
    righthyphenmin?: number;
    linepenalty?: number;
    adjdemerits?: number;
    hyphenpenalty?: number;
    exhyphenpenalty?: number;
    doublehyphendemerits?: number;
    finalhyphendemerits?: number;
}
interface LineBreakContext {
    linePenalty: number;
    adjDemerits: number;
    doubleHyphenDemerits: number;
    finalHyphenDemerits: number;
    hyphenPenalty: number;
    exHyphenPenalty: number;
    currentAlign: TextAlign;
    unitsPerEm?: number;
    letterSpacingFU?: number;
}
export declare class LineBreak {
    private static badness;
    private static fitnessClass;
    static findHyphenationPoints(word: string, language?: string, availablePatterns?: HyphenationPatternsMap, lefthyphenmin?: number, righthyphenmin?: number): number[];
    static itemizeText(text: string, measureText: (text: string) => number, measureTextWidths: ((text: string) => number[]) | undefined, hyphenate?: boolean, language?: string, availablePatterns?: HyphenationPatternsMap, lefthyphenmin?: number, righthyphenmin?: number, context?: LineBreakContext, lineWidth?: number): Item[];
    static isCJK(char: string): boolean;
    static isCJClosingPunctuation(char: string): boolean;
    static isCJOpeningPunctuation(char: string): boolean;
    static isCJPunctuation(char: string): boolean;
    private static itemizeCJKText;
    private static itemizeParagraph;
    private static itemizeWordBased;
    private static lineBreak;
    static breakText(options: LineBreakOptions): LineInfo[];
    private static postLineBreak;
}
export {};