Created
February 28, 2022 20:28
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Inter dynamic tracking as a React component
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// https://rsms.me/inter/dynmetrics | |
const DynamicText = ({ className, children, fontSize = 15, tag = "span" }) => { | |
const pxToRem = (px) => { | |
return Number(px * 0.0625) | |
} | |
const dynamicLeading = (z) => { | |
const l = 1.4 | |
return Number(pxToRem(Math.round(z * l))) | |
} | |
const dynamicTracking = (z) => { | |
const a = -0.0223 | |
const b = 0.185 | |
const c = -0.1745 | |
return Number((a + b * Math.pow(Math.E, c * z)).toFixed(3)) | |
} | |
const Tag = tag | |
return ( | |
<Tag | |
className={className} | |
style={{ | |
fontFamily: "Inter, sans-serif", | |
fontSize: `${pxToRem(fontSize)}rem`, | |
lineHeight: `${dynamicLeading(fontSize)}rem`, | |
letterSpacing: `${dynamicTracking(fontSize)}em` | |
}} | |
> | |
{children} | |
</Tag> | |
) | |
} |
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