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979bf48 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | "use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "calculateSizeAdjustValues", {
enumerable: true,
get: function() {
return calculateSizeAdjustValues;
}
});
const _constants = require("../shared/lib/constants");
const capsizeFontsMetrics = require('next/dist/server/capsize-font-metrics.json');
function formatName(str) {
return str.replace(/(?:^\w|[A-Z]|\b\w)/g, function(word, index) {
return index === 0 ? word.toLowerCase() : word.toUpperCase();
}).replace(/\s+/g, '');
}
function formatOverrideValue(val) {
return Math.abs(val * 100).toFixed(2);
}
function calculateSizeAdjustValues(fontName) {
const fontKey = formatName(fontName);
const fontMetrics = capsizeFontsMetrics[fontKey];
let { category, ascent, descent, lineGap, unitsPerEm, xWidthAvg } = fontMetrics;
const mainFontAvgWidth = xWidthAvg / unitsPerEm;
const fallbackFont = category === 'serif' ? _constants.DEFAULT_SERIF_FONT : _constants.DEFAULT_SANS_SERIF_FONT;
const fallbackFontName = formatName(fallbackFont.name);
const fallbackFontMetrics = capsizeFontsMetrics[fallbackFontName];
const fallbackFontAvgWidth = fallbackFontMetrics.xWidthAvg / fallbackFontMetrics.unitsPerEm;
let sizeAdjust = xWidthAvg ? mainFontAvgWidth / fallbackFontAvgWidth : 1;
ascent = formatOverrideValue(ascent / (unitsPerEm * sizeAdjust));
descent = formatOverrideValue(descent / (unitsPerEm * sizeAdjust));
lineGap = formatOverrideValue(lineGap / (unitsPerEm * sizeAdjust));
return {
ascent,
descent,
lineGap,
fallbackFont: fallbackFont.name,
sizeAdjust: formatOverrideValue(sizeAdjust)
};
}
//# sourceMappingURL=font-utils.js.map |