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import type { JSX } from "react";
import {
FreedrawIcon,
FontFamilyNormalIcon,
FontFamilyHeadingIcon,
FontFamilyCodeIcon,
} from "../components/icons";
import { FONT_FAMILY, FONT_FAMILY_FALLBACKS } from "../constants";
/**
* Encapsulates font metrics with additional font metadata.
* */
export interface FontMetadata {
/** for head & hhea metrics read the woff2 with https://fontdrop.info/ */
metrics: {
/** head.unitsPerEm metric */
unitsPerEm: 1000 | 1024 | 2048;
/** hhea.ascender metric */
ascender: number;
/** hhea.descender metric */
descender: number;
/** harcoded unitless line-height, https://github.com/excalidraw/excalidraw/pull/6360#issuecomment-1477635971 */
lineHeight: number;
};
/** element to be displayed as an icon */
icon?: JSX.Element;
/** flag to indicate a deprecated font */
deprecated?: true;
/** flag to indicate a server-side only font */
serverSide?: true;
/** flag to indiccate a local-only font */
local?: true;
/** flag to indicate a fallback font */
fallback?: true;
}
export const FONT_METADATA: Record<number, FontMetadata> = {
[FONT_FAMILY.Excalifont]: {
metrics: {
unitsPerEm: 1000,
ascender: 886,
descender: -374,
lineHeight: 1.25,
},
icon: FreedrawIcon,
},
[FONT_FAMILY.Nunito]: {
metrics: {
unitsPerEm: 1000,
ascender: 1011,
descender: -353,
lineHeight: 1.35,
},
icon: FontFamilyNormalIcon,
},
[FONT_FAMILY["Lilita One"]]: {
metrics: {
unitsPerEm: 1000,
ascender: 923,
descender: -220,
lineHeight: 1.15,
},
icon: FontFamilyHeadingIcon,
},
[FONT_FAMILY["Comic Shanns"]]: {
metrics: {
unitsPerEm: 1000,
ascender: 750,
descender: -250,
lineHeight: 1.25,
},
icon: FontFamilyCodeIcon,
},
[FONT_FAMILY.Virgil]: {
metrics: {
unitsPerEm: 1000,
ascender: 886,
descender: -374,
lineHeight: 1.25,
},
icon: FreedrawIcon,
deprecated: true,
},
[FONT_FAMILY.Helvetica]: {
metrics: {
unitsPerEm: 2048,
ascender: 1577,
descender: -471,
lineHeight: 1.15,
},
icon: FontFamilyNormalIcon,
deprecated: true,
local: true,
},
[FONT_FAMILY.Cascadia]: {
metrics: {
unitsPerEm: 2048,
ascender: 1900,
descender: -480,
lineHeight: 1.2,
},
icon: FontFamilyCodeIcon,
deprecated: true,
},
[FONT_FAMILY["Liberation Sans"]]: {
metrics: {
unitsPerEm: 2048,
ascender: 1854,
descender: -434,
lineHeight: 1.15,
},
serverSide: true,
},
[FONT_FAMILY_FALLBACKS.Xiaolai]: {
metrics: {
unitsPerEm: 1000,
ascender: 880,
descender: -144,
lineHeight: 1.15,
},
fallback: true,
},
[FONT_FAMILY_FALLBACKS["Segoe UI Emoji"]]: {
metrics: {
// reusing Excalifont metrics
unitsPerEm: 1000,
ascender: 886,
descender: -374,
lineHeight: 1.25,
},
local: true,
fallback: true,
},
};
/** Unicode ranges defined by google fonts */
export const GOOGLE_FONTS_RANGES = {
LATIN:
"U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD",
LATIN_EXT:
"U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF",
CYRILIC_EXT:
"U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F",
CYRILIC: "U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116",
VIETNAMESE:
"U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB",
};
/** local protocol to skip the local font from registering or inlining */
export const LOCAL_FONT_PROTOCOL = "local:";
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