You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
2.0 KiB
76 lines
2.0 KiB
3 years ago
|
'use strict';
|
||
|
|
|
||
|
|
const { visit } = require('../lib/xast.js');
|
||
|
|
|
||
|
|
exports.type = 'visitor';
|
||
|
|
exports.name = 'cleanupEnableBackground';
|
||
|
|
exports.active = true;
|
||
|
|
exports.description =
|
||
|
|
'remove or cleanup enable-background attribute when possible';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Remove or cleanup enable-background attr which coincides with a width/height box.
|
||
|
|
*
|
||
|
|
* @see https://www.w3.org/TR/SVG11/filters.html#EnableBackgroundProperty
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* <svg width="100" height="50" enable-background="new 0 0 100 50">
|
||
|
|
* ⬇
|
||
|
|
* <svg width="100" height="50">
|
||
|
|
*
|
||
|
|
* @author Kir Belevich
|
||
|
|
*
|
||
|
|
* @type {import('../lib/types').Plugin<void>}
|
||
|
|
*/
|
||
|
|
exports.fn = (root) => {
|
||
|
|
const regEnableBackground =
|
||
|
|
/^new\s0\s0\s([-+]?\d*\.?\d+([eE][-+]?\d+)?)\s([-+]?\d*\.?\d+([eE][-+]?\d+)?)$/;
|
||
|
|
|
||
|
|
let hasFilter = false;
|
||
|
|
visit(root, {
|
||
|
|
element: {
|
||
|
|
enter: (node) => {
|
||
|
|
if (node.name === 'filter') {
|
||
|
|
hasFilter = true;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
},
|
||
|
|
});
|
||
|
|
|
||
|
|
return {
|
||
|
|
element: {
|
||
|
|
enter: (node) => {
|
||
|
|
if (node.attributes['enable-background'] == null) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (hasFilter) {
|
||
|
|
if (
|
||
|
|
(node.name === 'svg' ||
|
||
|
|
node.name === 'mask' ||
|
||
|
|
node.name === 'pattern') &&
|
||
|
|
node.attributes.width != null &&
|
||
|
|
node.attributes.height != null
|
||
|
|
) {
|
||
|
|
const match =
|
||
|
|
node.attributes['enable-background'].match(regEnableBackground);
|
||
|
|
if (
|
||
|
|
match != null &&
|
||
|
|
node.attributes.width === match[1] &&
|
||
|
|
node.attributes.height === match[3]
|
||
|
|
) {
|
||
|
|
if (node.name === 'svg') {
|
||
|
|
delete node.attributes['enable-background'];
|
||
|
|
} else {
|
||
|
|
node.attributes['enable-background'] = 'new';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
//we don't need 'enable-background' if we have no filters
|
||
|
|
delete node.attributes['enable-background'];
|
||
|
|
}
|
||
|
|
},
|
||
|
|
},
|
||
|
|
};
|
||
|
|
};
|