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mightyscape-1.1-deprecated/extensions/fablabchemnitz/svgo-inkscape/node_modules/svgo/plugins/collapseGroups.js
2020-08-30 12:36:33 +02:00

74 lines
2.0 KiB
JavaScript

'use strict';
exports.type = 'perItemReverse';
exports.active = true;
exports.description = 'collapses useless groups';
var animationElems = require('./_collections').elemsGroups.animation;
/*
* Collapse useless groups.
*
* @example
* <g>
* <g attr1="val1">
* <path d="..."/>
* </g>
* </g>
* ⬇
* <g>
* <g>
* <path attr1="val1" d="..."/>
* </g>
* </g>
* ⬇
* <path attr1="val1" d="..."/>
*
* @param {Object} item current iteration item
* @return {Boolean} if false, item will be filtered out
*
* @author Kir Belevich
*/
exports.fn = function(item) {
// non-empty elements
if (item.isElem() && !item.isElem('switch') && !item.isEmpty()) {
item.content.forEach(function(g, i) {
// non-empty groups
if (g.isElem('g') && !g.isEmpty()) {
// move group attibutes to the single content element
if (g.hasAttr() && g.content.length === 1) {
var inner = g.content[0];
if (inner.isElem() && !inner.hasAttr('id') && (
!g.hasAttr('clip-path') ||
inner.isElem('g') && !g.hasAttr('transform') && !inner.hasAttr('transform')
)) {
g.eachAttr(function(attr) {
if (!inner.hasAttr(attr.name)) {
inner.addAttr(attr);
} else if (attr.name == 'transform' || attr.name == 'class') {
inner.attr(attr.name).value = attr.value + ' ' + inner.attr(attr.name).value;
}
g.removeAttr(attr.name);
});
}
}
// collapse groups without attributes
if (!g.hasAttr() && !g.content.some(function(item) { return item.isElem(animationElems) })) {
item.spliceContent(i, 1, g.content);
}
}
});
}
};