import { DecodedPNG } from "./png.js";
import { RuntimePaths } from "./types.js";
export declare const GLYPH_STYLES: readonly [{
    readonly key: "r22";
    readonly px: 22;
    readonly weight: "regular";
}, {
    readonly key: "r24";
    readonly px: 24;
    readonly weight: "regular";
}, {
    readonly key: "s22";
    readonly px: 22;
    readonly weight: "semibold";
}, {
    readonly key: "s28";
    readonly px: 28;
    readonly weight: "semibold";
}, {
    readonly key: "b20";
    readonly px: 20;
    readonly weight: "bold";
}, {
    readonly key: "b24";
    readonly px: 24;
    readonly weight: "bold";
}, {
    readonly key: "b26";
    readonly px: 26;
    readonly weight: "bold";
}, {
    readonly key: "b38";
    readonly px: 38;
    readonly weight: "bold";
}];
export type GlyphStyleKey = (typeof GLYPH_STYLES)[number]["key"];
export declare function glyphCharset(): string[];
export interface GlyphCell {
    x: number;
    w: number;
    adv: number;
}
export interface GlyphStyleMetrics {
    px: number;
    weight: string;
    ascent: number;
    descent: number;
    pad: number;
    cellH: number;
    glyphs: Record<string, GlyphCell>;
}
export interface GlyphMetricsFile {
    version: number;
    styles: Record<string, GlyphStyleMetrics>;
}
export interface LoadedGlyphStyle {
    metrics: GlyphStyleMetrics;
    atlas: DecodedPNG;
}
export type GlyphSet = Record<string, LoadedGlyphStyle>;
export declare function glyphMetricsPath(paths: RuntimePaths): string;
export declare function glyphAtlasPath(paths: RuntimePaths, styleKey: string): string;
export declare function bakeGlyphAtlases(paths: RuntimePaths, options?: {
    dryRun?: boolean;
}): string[];
export declare function loadGlyphSet(paths: RuntimePaths): GlyphSet | null;
export declare function measureText(style: LoadedGlyphStyle, text: string): number;
export declare function ellipsize(style: LoadedGlyphStyle, text: string, maxWidth: number): string;