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52 lines
1.4 KiB
52 lines
1.4 KiB
2 years ago
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'use strict';
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exports.type = 'visitor';
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exports.name = 'removeViewBox';
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exports.active = true;
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exports.description = 'removes viewBox attribute when possible';
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const viewBoxElems = ['svg', 'pattern', 'symbol'];
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/**
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* Remove viewBox attr which coincides with a width/height box.
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*
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* @see https://www.w3.org/TR/SVG11/coords.html#ViewBoxAttribute
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*
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* @example
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* <svg width="100" height="50" viewBox="0 0 100 50">
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* ⬇
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* <svg width="100" height="50">
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*
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* @author Kir Belevich
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*
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* @type {import('../lib/types').Plugin<void>}
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*/
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exports.fn = () => {
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return {
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element: {
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enter: (node, parentNode) => {
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if (
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viewBoxElems.includes(node.name) &&
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node.attributes.viewBox != null &&
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node.attributes.width != null &&
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node.attributes.height != null
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) {
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// TODO remove width/height for such case instead
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if (node.name === 'svg' && parentNode.type !== 'root') {
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return;
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}
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const nums = node.attributes.viewBox.split(/[ ,]+/g);
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if (
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nums[0] === '0' &&
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nums[1] === '0' &&
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node.attributes.width.replace(/px$/, '') === nums[2] && // could use parseFloat too
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node.attributes.height.replace(/px$/, '') === nums[3]
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) {
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delete node.attributes.viewBox;
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}
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}
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},
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},
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};
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};
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