mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Math
synced 2024-12-04 20:18:35 +00:00
fec6d16b14
Change the appearance of \mathcal A and similar letters in MathJax rendering to better match the MathML rendering as implemented by browsers. Code generously developed by Davide P. Cervone. Bug: T375932 Change-Id: Ieee933b9863c2747559769065da6b5369d304f53
66 lines
3 KiB
JavaScript
66 lines
3 KiB
JavaScript
( function () {
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'use strict';
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const extensionAssetsPath = mw.config.get( 'wgExtensionAssetsPath' );
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window.MathJax = {
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loader: {
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// see https://docs.mathjax.org/en/latest/input/mathml.html
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load: [ '[mml]/mml3' ],
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// see https://docs.mathjax.org/en/latest/options/startup/loader.html
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paths: {
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mathjax: extensionAssetsPath + '/Math/modules/mathjax/es5'
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}
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},
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// helper function for https://phabricator.wikimedia.org/T375932
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/* eslint-disable no-return-assign */
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remapChars( v1, v2, base, map, font ) {
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const c1 = v1.chars;
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const c2 = v2.chars;
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for ( let i = 0; i < 26; i++ ) {
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const data1 = c1[ map[ i ] || base + i ] || [];
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const data2 = c2[ 0x41 + i ];
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if ( data1.length === 0 ) {
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c1[ base + i ] = data1;
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}
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[ 0, 1, 2 ].forEach( ( j ) => data1[ j ] = data2[ j ] );
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data1[ 3 ] = Object.assign( {}, data2[ 3 ], { f: font, c: String.fromCharCode( 0x41 + i ) } );
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}
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},
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startup: {
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ready() {
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window.MathJax.startup.defaultReady();
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// See https://phabricator.wikimedia.org/T375932 and the suggested fix from
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// https://github.com/mathjax/MathJax/issues/3292#issuecomment-2383760829
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// Makes rendering of \matcal look similar to the browsers MathML rendering
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// and the old image rendering.
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// Note that \mathsrc (which is unsupported by texvc) would map to the
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// same unicode chars and thus should not be activated.
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const variant = window.MathJax.startup.document.outputJax.font.variant;
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const map = { 1: 0x212C, 4: 0x2130, 5: 0x2131, 7: 0x210B, 8: 0x2110, 11: 0x2112, 12: 0x2133, 17: 0x211B };
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window.MathJax.config.remapChars( variant.normal, variant[ '-tex-calligraphic' ], 0x1D49C, map, 'C' );
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window.MathJax.config.remapChars( variant.normal, variant[ '-tex-bold-calligraphic' ], 0x1D4D0, {}, 'CB' );
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// See https://phabricator.wikimedia.org/T375241 and the suggested startup function from
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// https://github.com/mathjax/MathJax/issues/3030#issuecomment-1490520850
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// This workaround will be included in the MathJax 4 release and no longer be
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// required when we upgrade to MathJax 4.
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const { Mml3 } = window.MathJax._.input.mathml.mml3.mml3;
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const mml3 = new Mml3( window.MathJax.startup.document );
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const adaptor = window.MathJax.startup.document.adaptor;
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const processor = new XSLTProcessor();
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const parsed = adaptor.parse( Mml3.XSLT, 'text/xml' );
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processor.importStylesheet( parsed );
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mml3.transform = ( node ) => {
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const div = adaptor.node( 'div', {}, [ adaptor.clone( node ) ] );
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const dom = adaptor.parse( adaptor.serializeXML( div ), 'text/xml' );
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const mml = processor.transformToDocument( dom );
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return ( mml ? adaptor.tags( mml, 'math' )[ 0 ] : node );
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};
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// inputJax[0] did not work as per https://github.com/mathjax/MathJax/issues/3287#issuecomment-2363843017
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const MML = window.MathJax.startup.document.inputJax[ 1 ];
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MML.mmlFilters.items.pop(); // remove old filter
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MML.mmlFilters.add( mml3.mmlFilter.bind( mml3 ) );
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}
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}
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};
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}() );
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