Samuel Newman
110 lines
3.0 KiB
TypeScript
110 lines
3.0 KiB
TypeScript
import {type TextStyle} from 'react-native'
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import {IS_ANDROID, IS_WEB} from '#/env'
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import {type Device, device} from '#/storage'
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const WEB_FONT_FAMILIES = `system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"`
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const factor = 0.0625 // 1 - (15/16)
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const fontScaleMultipliers: Record<Device['fontScale'], number> = {
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'-2': 1 - factor * 1, // unused
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'-1': 1 - factor * 1,
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'0': 1, // default
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'1': 1 + factor * 1,
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'2': 1 + factor * 1, // unused
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}
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export function computeFontScaleMultiplier(scale: Device['fontScale']) {
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return fontScaleMultipliers[scale]
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}
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export function getFontScale() {
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return device.get(['fontScale']) ?? '0'
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}
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export function setFontScale(fontScale: Device['fontScale']) {
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device.set(['fontScale'], fontScale)
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}
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export function getFontFamily() {
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return device.get(['fontFamily']) || 'theme'
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}
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export function setFontFamily(fontFamily: Device['fontFamily']) {
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device.set(['fontFamily'], fontFamily)
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}
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/*
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* Unused fonts are commented out, but the files are there if we need them.
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*/
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export function applyFonts(style: TextStyle, fontFamily: 'system' | 'theme') {
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if (fontFamily === 'theme') {
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if (IS_ANDROID) {
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style.fontFamily =
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{
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400: 'Inter-Regular',
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500: 'Inter-Medium',
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600: 'Inter-SemiBold',
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700: 'Inter-Bold',
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800: 'Inter-Bold',
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900: 'Inter-Bold',
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}[String(style.fontWeight || '400')] || 'Inter-Regular'
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if (style.fontStyle === 'italic') {
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if (style.fontFamily === 'Inter-Regular') {
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style.fontFamily = 'Inter-Italic'
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} else {
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style.fontFamily += 'Italic'
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}
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}
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/*
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* These are not supported on Android and actually break the styling.
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*/
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delete style.fontWeight
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delete style.fontStyle
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} else {
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style.fontFamily = 'InterVariable'
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if (style.fontStyle === 'italic') {
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style.fontFamily += 'Italic'
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}
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}
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if (IS_WEB) {
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// fallback families only supported on web
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style.fontFamily += `, ${WEB_FONT_FAMILIES}`
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}
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/**
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* Disable contextual alternates and emoji overrides in Inter
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* {@link https://developer.mozilla.org/en-US/docs/Web/CSS/font-variant}
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*/
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if (IS_WEB) {
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// @ts-expect-error - web supports 'unicode' as a valid value for fontVariant
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style.fontVariant = (style.fontVariant || []).concat(
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'no-contextual',
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'unicode',
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)
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} else {
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style.fontVariant = (style.fontVariant || []).concat('no-contextual')
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}
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} else {
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// fallback families only supported on web
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if (IS_WEB) {
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style.fontFamily = style.fontFamily || WEB_FONT_FAMILIES
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}
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/**
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* Overridden to previous spacing for the `system` font option.
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* https://github.com/bluesky-social/social-app/commit/2419096e2409008b7d71fd6b8f8d0dd5b016e267
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*/
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style.letterSpacing = 0.25
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}
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}
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/**
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* Here only for bundling purposes, not actually used.
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*/
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export {DO_NOT_USE} from '#/alf/util/unusedUseFonts'
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