Ctrl-m compiles LaTeX code with inline math delimiters $ ... $ and [; ... ;], and display math delimiters $$ ... $$ and [(; ... ;)]. Ctrl-, decompiles.
// ==UserScript==
// @name MathJax compiler and decompiler
// @namespace
// @author Marcelo Silvarolla
// @version 0.2
// @description Ctrl-m compiles LaTeX code with inline math delimiters $ ... $ and [; ... ;], and display math delimiters $$ ... $$ and [(; ... ;)]. Ctrl-, decompiles.
// @match *://*/*
// @copyright
// @namespace https://greasyfork.org/users/196485
// ==/UserScript==
function removeTypeset() {
var HTML = MathJax.HTML,
jax = MathJax.Hub.getAllJax();
for (var i = 0, m = jax.length; i < m; i++) {
var script = jax[i].SourceElement(),
tex = jax[i].originalText;
if (script.type.match(/display/)) {
tex = "$$" + tex + "$$";
} else {
tex = "$" + tex + "$";
}
jax[i].Remove();
var preview = script.previousSibling;
if (preview && preview.className === "MathJax_Preview") {
preview.parentNode.removeChild(preview);
}
preview = HTML.Element("span", { className: "MathJax_Preview" }, [tex]);
script.parentNode.insertBefore(preview, script);
}
}
function showTypeset(e) {
// ctrl-m
if (e.ctrlKey && e.keyCode == 77) {
var script = document.createElement("script");
script.type = "text/javascript";
script.src =
"//cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS_HTML";
var config =
"MathJax.Hub.Config({ " +
'extensions: ["tex2jax.js"], ' +
'tex2jax: { skipTags: ["script","noscript","style","textarea"],inlineMath: [ ["$", "$"], ["[;", ";]"] ], displayMath: [ ["$$", "$$"], ["[(;",";)]"]], processEscapes: true }, ' +
'jax: ["input/TeX", "output/HTML-CSS"] ' +
" }); " +
"MathJax.Hub.Startup.onload(); ";
if (window.opera) {
script.innerHTML = config;
} else {
script.text = config;
}
document.getElementsByTagName("head")[0].appendChild(script);
MathJax.Hub.Queue(["Typeset", MathJax.Hub]);
$(".MathJax")
.parent()
.css("border", "none")
.css("background", "none");
}
// ctrl-,
if (e.ctrlKey && e.keyCode == 188) {
removeTypeset();
}
}
window.addEventListener("keyup", showTypeset);