59 lines
2.1 KiB
JavaScript
59 lines
2.1 KiB
JavaScript
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import _extends from "@babel/runtime/helpers/esm/extends";
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import _formatMuiErrorMessage from "@mui/utils/formatMuiErrorMessage";
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import { isUnitless, convertLength, responsiveProperty, alignProperty, fontGrid } from './cssUtils';
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export default function responsiveFontSizes(themeInput, options = {}) {
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const {
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breakpoints = ['sm', 'md', 'lg'],
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disableAlign = false,
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factor = 2,
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variants = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'subtitle1', 'subtitle2', 'body1', 'body2', 'caption', 'button', 'overline']
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} = options;
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const theme = _extends({}, themeInput);
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theme.typography = _extends({}, theme.typography);
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const typography = theme.typography;
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// Convert between CSS lengths e.g. em->px or px->rem
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// Set the baseFontSize for your project. Defaults to 16px (also the browser default).
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const convert = convertLength(typography.htmlFontSize);
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const breakpointValues = breakpoints.map(x => theme.breakpoints.values[x]);
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variants.forEach(variant => {
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const style = typography[variant];
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const remFontSize = parseFloat(convert(style.fontSize, 'rem'));
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if (remFontSize <= 1) {
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return;
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}
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const maxFontSize = remFontSize;
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const minFontSize = 1 + (maxFontSize - 1) / factor;
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let {
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lineHeight
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} = style;
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if (!isUnitless(lineHeight) && !disableAlign) {
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throw new Error(process.env.NODE_ENV !== "production" ? `MUI: Unsupported non-unitless line height with grid alignment.
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Use unitless line heights instead.` : _formatMuiErrorMessage(6));
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}
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if (!isUnitless(lineHeight)) {
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// make it unitless
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lineHeight = parseFloat(convert(lineHeight, 'rem')) / parseFloat(remFontSize);
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}
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let transform = null;
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if (!disableAlign) {
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transform = value => alignProperty({
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size: value,
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grid: fontGrid({
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pixels: 4,
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lineHeight,
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htmlFontSize: typography.htmlFontSize
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})
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});
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}
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typography[variant] = _extends({}, style, responsiveProperty({
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cssProperty: 'fontSize',
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min: minFontSize,
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max: maxFontSize,
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unit: 'rem',
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breakpoints: breakpointValues,
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transform
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}));
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});
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return theme;
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}
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