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88 lines
2.5 KiB
88 lines
2.5 KiB
'use strict'; |
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exports.type = 'perItem'; |
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exports.active = true; |
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exports.description = 'rounds numeric values to the fixed precision, removes default ‘px’ units'; |
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exports.params = { |
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floatPrecision: 3, |
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leadingZero: true, |
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defaultPx: true, |
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convertToPx: true |
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}; |
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var regNumericValues = /^([\-+]?\d*\.?\d+([eE][\-+]?\d+)?)(px|pt|pc|mm|cm|m|in|ft|em|ex|%)?$/, |
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removeLeadingZero = require('../lib/svgo/tools').removeLeadingZero, |
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absoluteLengths = { // relative to px |
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cm: 96/2.54, |
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mm: 96/25.4, |
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in: 96, |
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pt: 4/3, |
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pc: 16 |
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}; |
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/** |
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* Round numeric values to the fixed precision, |
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* remove default 'px' units. |
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* |
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* @param {Object} item current iteration item |
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* @param {Object} params plugin params |
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* @return {Boolean} if false, item will be filtered out |
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* |
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* @author Kir Belevich |
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*/ |
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exports.fn = function(item, params) { |
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if (item.isElem()) { |
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var floatPrecision = params.floatPrecision; |
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if (item.hasAttr('viewBox')) { |
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var nums = item.attr('viewBox').value.split(/\s,?\s*|,\s*/g); |
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item.attr('viewBox').value = nums.map(function(value) { |
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var num = +value; |
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return isNaN(num) ? value : +num.toFixed(floatPrecision); |
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}).join(' '); |
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} |
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item.eachAttr(function(attr) { |
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// The `version` attribute is a text string and cannot be rounded |
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if (attr.name === 'version') { return } |
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var match = attr.value.match(regNumericValues); |
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// if attribute value matches regNumericValues |
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if (match) { |
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// round it to the fixed precision |
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var num = +(+match[1]).toFixed(floatPrecision), |
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units = match[3] || ''; |
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// convert absolute values to pixels |
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if (params.convertToPx && units && (units in absoluteLengths)) { |
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var pxNum = +(absoluteLengths[units] * match[1]).toFixed(floatPrecision); |
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if (String(pxNum).length < match[0].length) { |
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num = pxNum; |
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units = 'px'; |
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} |
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} |
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// and remove leading zero |
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if (params.leadingZero) { |
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num = removeLeadingZero(num); |
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} |
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// remove default 'px' units |
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if (params.defaultPx && units === 'px') { |
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units = ''; |
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} |
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attr.value = num + units; |
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} |
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}); |
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} |
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};
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