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import {isWeb} from '#/platform/detection'
import {Device, device} from '#/storage'
const FAMILIES = `-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Liberation Sans", Helvetica, Arial, sans-serif`
const factor = 0.0625 // 1 - (15/16)
const fontScaleMultipliers: Record<Device['fontScale'], number> = {
'-2': 1 - factor * 3,
'-1': 1 - factor * 2,
'0': 1 - factor * 1, // default
'1': 1,
'2': 1 + factor * 1,
}
export function computeFontScaleMultiplier(scale: Device['fontScale']) {
return fontScaleMultipliers[scale]
}
export function getFontScale() {
return device.get(['fontScale']) ?? '0'
}
export function setFontScale(fontScale: Device['fontScale']) {
device.set(['fontScale'], fontScale)
}
export function getFontFamily() {
return device.get(['fontFamily']) || 'theme'
}
export function setFontFamily(fontFamily: Device['fontFamily']) {
device.set(['fontFamily'], fontFamily)
}
/*
* Unused fonts are commented out, but the files are there if we need them.
*/
export function applyFonts(
style: Record<string, any>,
fontFamily: 'system' | 'theme',
) {
if (fontFamily === 'theme') {
style.fontFamily = 'InterVariable'
if (style.fontStyle === 'italic') {
style.fontFamily += 'Italic'
}
// fallback families only supported on web
if (isWeb) {
style.fontFamily += `, ${FAMILIES}`
}
} else {
// fallback families only supported on web
if (isWeb) {
style.fontFamily = style.fontFamily || FAMILIES
}
}
/**
* Disable contextual ligatures
* {@link https://developer.mozilla.org/en-US/docs/Web/CSS/font-variant}
*/
style.fontVariant = ['no-contextual']
}
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