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87 lines
2.9 KiB
87 lines
2.9 KiB
'use strict'; |
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exports.type = 'perItemReverse'; |
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exports.active = true; |
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exports.description = 'collapses useless groups'; |
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var collections = require('./_collections'), |
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attrsInheritable = collections.inheritableAttrs, |
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animationElems = collections.elemsGroups.animation; |
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function hasAnimatedAttr(item) { |
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/* jshint validthis:true */ |
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return item.isElem(animationElems) && item.hasAttr('attributeName', this) || |
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!item.isEmpty() && item.content.some(hasAnimatedAttr, this); |
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} |
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/* |
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* Collapse useless groups. |
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* |
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* @example |
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* <g> |
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* <g attr1="val1"> |
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* <path d="..."/> |
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* </g> |
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* </g> |
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* ⬇ |
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* <g> |
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* <g> |
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* <path attr1="val1" d="..."/> |
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* </g> |
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* </g> |
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* ⬇ |
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* <path attr1="val1" d="..."/> |
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* |
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* @param {Object} item current iteration item |
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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) { |
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// non-empty elements |
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if (item.isElem() && !item.isElem('switch') && !item.isEmpty()) { |
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item.content.forEach(function(g, i) { |
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// non-empty groups |
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if (g.isElem('g') && !g.isEmpty()) { |
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// move group attibutes to the single content element |
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if (g.hasAttr() && g.content.length === 1) { |
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var inner = g.content[0]; |
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if (inner.isElem() && !inner.hasAttr('id') && !g.hasAttr('filter') && |
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!(g.hasAttr('class') && inner.hasAttr('class')) && ( |
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!g.hasAttr('clip-path') && !g.hasAttr('mask') || |
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inner.isElem('g') && !g.hasAttr('transform') && !inner.hasAttr('transform') |
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) |
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) { |
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g.eachAttr(function(attr) { |
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if (g.content.some(hasAnimatedAttr, attr.name)) return; |
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if (!inner.hasAttr(attr.name)) { |
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inner.addAttr(attr); |
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} else if (attr.name == 'transform') { |
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inner.attr(attr.name).value = attr.value + ' ' + inner.attr(attr.name).value; |
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} else if (inner.hasAttr(attr.name, 'inherit')) { |
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inner.attr(attr.name).value = attr.value; |
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} else if ( |
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attrsInheritable.indexOf(attr.name) < 0 && |
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!inner.hasAttr(attr.name, attr.value) |
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) { |
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return; |
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} |
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g.removeAttr(attr.name); |
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}); |
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} |
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} |
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// collapse groups without attributes |
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if (!g.hasAttr() && !g.content.some(function(item) { return item.isElem(animationElems) })) { |
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item.spliceContent(i, 1, g.content); |
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} |
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} |
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}); |
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} |
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};
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