28 lines
921 B
JavaScript
28 lines
921 B
JavaScript
/**
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* Regular expressions for calculating dimensions
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*/
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const unitsSplit = /(-?[0-9.]*[0-9]+[0-9.]*)/g;
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const unitsTest = /^-?[0-9.]*[0-9]+[0-9.]*$/g;
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function calculateSize(size, ratio, precision) {
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if (ratio === 1) return size;
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precision = precision || 100;
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if (typeof size === "number") return Math.ceil(size * ratio * precision) / precision;
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if (typeof size !== "string") return size;
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const oldParts = size.split(unitsSplit);
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if (oldParts === null || !oldParts.length) return size;
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const newParts = [];
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let code = oldParts.shift();
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let isNumber = unitsTest.test(code);
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while (true) {
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if (isNumber) {
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const num = parseFloat(code);
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if (isNaN(num)) newParts.push(code);
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else newParts.push(Math.ceil(num * ratio * precision) / precision);
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} else newParts.push(code);
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code = oldParts.shift();
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if (code === void 0) return newParts.join("");
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isNumber = !isNumber;
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}
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}
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export { calculateSize }; |