# App/Xtn/Mediawiki/Math/MathJax

From XOWA: the free, open-source, offline wiki application

## Credits

Considerable thanks goes to Schnark for proposing and implementing the MathJax integration.

## Setup notes

The following is a list of setup notes for MathJax:

- Get latest of Math Extension: http://www.mediawiki.org/wiki/Extension:Math or https://gerrit.wikimedia.org/r/gitweb?p=mediawiki/extensions/Math.git;a=snapshot;h=refs/heads/master;sf=tgz
- Unzip to /xowa/bin/any/javascript/xowa/mathjax_temp/. When you are done you should have /xowa/bin/any/javascript/xowa/mathjax_temp/Math.php and many other files
- Move /xowa/bin/any/javascript/xowa/mathjax_temp/modules/Mathjax to /xowa/bin/any/javascript/xowa/mathjax/. When you are done you will have a file called /xowa/bin/any/javascript/xowa/mathjax/Mathjax.js as well as many others. (We basically want to ignore everything except for the inner modules/Mathjax directory)
- Edit the following file: /xowa/bin/any/javascript/xowa/mathjax/extensions/wiki2jax.js

replace this:

        $('span.tex, img.tex', element || document).each(function(i, span) {
            that.ConvertMath(span);
        });

with this:

        var math = document.querySelectorAll('[id^="xowa_math_txt"]');
        for (var i = 0; i < math.length; i++) {
           that.ConvertMath(math[i]);
        }

- In the same file:

replace this:

    tex = $(node).text().replace(/^\$/,"").replace(/\$$/,"");

with this:

    tex = node.textContent.replace(/^\$/,"").replace(/\$$/,""); //patched for XOWA

- Create a text file at /xowa/bin/any/javascript/xowa/mathjax/xowa_mathjax.js and add the following

      document.addEventListener( "DOMContentLoaded", function(){
      var math = document.querySelectorAll('[id^="xowa_math_txt"]');
      if (math.length) {
      window.mathJax_Config = function () {
        MathJax.Hub.Config({
        root: window.xowa_root_dir + 'bin/any/javascript/xowa/mathjax',
        config: ["TeX-AMS-texvc_HTML.js"],
        "v1.0-compatible": false,
        styles: { ".mtext": { "font-family": "sans-serif ! important", "font-size": "80%" } },
        displayAlign: "left",
        menuSettings: { zoom: "Click" },
        "HTML-CSS": { imageFont: null, availableFonts: ["TeX"] }
        });
        MathJax.OutputJax.fontDir = window.xowa_root_dir + 'bin/any/javascript/xowa/mathjax/fonts';
      }

        var config = 'mathJax_Config();',
          script1 = document.createElement( 'script' ),
          script2 = document.createElement( 'script' );
        script1.setAttribute( 'type', 'text/x-mathjax-config' );
        script1.text = config;
        document.getElementsByTagName('head')[0].appendChild( script1 );

        script2.setAttribute( 'src', window.xowa_root_dir + 'bin/any/javascript/xowa/math/mathjax/MathJax.js?config=default' );
        document.getElementsByTagName('head')[0].appendChild( script2 );
      }
      }, false );

- Change "menuSettings:" in /xowa/bin/javascript/xowa/math/mathjax/config/default.js
  - add 'renderer: "SVG"'
  - change 'texHints: false'

Example

      menuSettings: {
        renderer: "SVG", //  XOWA: manually specify SVG b/c HTML/CSS fails with "Can't Load Web Font TeX/Math/Italic"
        texHints: false  //  XOWA: include class names for TeXAtom elements; changed from true to false, b/c it sometimes crashes XOWA
      },

  Note that xowa_mathjax.js will use the config since it calls '/MathJax.js?config=default'

- Change "blacker" from 10 to 1 b/c 1 looks closer to the HTML/CSS renderer and 10 looks too "blocky"

        blacker: 1, // XOWA: changed from 10 to 1 b/c 1 looks closer to the HTML/CSS renderer and 10 looks too "blocky"

- Embed this in the xowa.gfs file (XOWA does this through ~{math_mathjax_script})

       <script src="file:///xowa/bin/any/javascript/xowa/mathjax/xowa_mathjax.js"></script>

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