mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Math
synced 2024-12-24 05:13:10 +00:00
d4e928a486
- Use span with a background-image instead of <img> for the fallback SVG so that they don't load in Gecko. - Make the image fallback a span inline-block so that it can have a dimension. Bug: 71929 Change-Id: I7f820cd5766db1fece452ebfc72915a55e42c82e
30 lines
1.4 KiB
JavaScript
30 lines
1.4 KiB
JavaScript
( function ( $ ) {
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'use strict';
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// The MW_MATH_PNG and MW_MATH_MATHML constants are taken from Math.php
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var MW_MATH_PNG = 0, MW_MATH_MATHML = 5, img, url;
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// If MathPlayer is installed we show the MathML rendering.
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if (navigator.userAgent.indexOf('MathPlayer') > -1) {
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$( '.mwe-math-mathml-a11y' ).removeClass( 'mwe-math-mathml-a11y' );
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$( '.mwe-math-fallback-image-inline, .mwe-math-fallback-image-display' ).css( 'display', 'none' );
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return;
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}
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// We verify whether SVG as <img> is supported and otherwise use the
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// PNG fallback. See https://github.com/Modernizr/Modernizr/blob/master/feature-detects/svg/asimg.js
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if (!document.implementation.hasFeature('http://www.w3.org/TR/SVG11/feature#Image', '1.1')) {
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$( '.mwe-math-fallback-image-inline, .mwe-math-fallback-image-display' ).each(function() {
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// Create a new PNG image to use as the fallback.
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img = document.createElement('img');
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url = this.style.backgroundImage.match(/url\('?([^']*)'?\)/)[1];
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img.setAttribute( 'src', url.replace('mode=' + MW_MATH_MATHML, 'mode=' + MW_MATH_PNG) );
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img.setAttribute( 'class', 'tex mwe-math-fallback-image-' + ($( this ).hasClass('mwe-math-fallback-image-inline') ? 'inline' : 'display') );
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img.setAttribute( 'aria-hidden', 'true' );
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this.parentNode.insertBefore( img, this );
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// Hide the SVG fallback.
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$( this ).css( 'display', 'none' );
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});
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}
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}( jQuery ) );
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