svgedit/dist/extensions/ext-mathjax.js

362 lines
17 KiB
JavaScript

var svgEditorExtension_mathjax = (function () {
'use strict';
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
try {
var info = gen[key](arg);
var value = info.value;
} catch (error) {
reject(error);
return;
}
if (info.done) {
resolve(value);
} else {
Promise.resolve(value).then(_next, _throw);
}
}
function _asyncToGenerator(fn) {
return function () {
var self = this,
args = arguments;
return new Promise(function (resolve, reject) {
var gen = fn.apply(self, args);
function _next(value) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
}
function _throw(err) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
}
_next(undefined);
});
};
}
/**
* Add any of the whitelisted attributes to the script tag.
* @param {HTMLScriptElement} script
* @param {PlainObject<string, string>} atts
* @returns {void}
*/
function addScriptAtts(script, atts) {
['id', 'class', 'type'].forEach(function (prop) {
if (prop in atts) {
script[prop] = atts[prop];
}
});
} // Additions by Brett
function importScript(url) {
var atts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
if (Array.isArray(url)) {
return Promise.all(url.map(function (u) {
return importScript(u, atts);
}));
}
return new Promise(function (resolve, reject) {
// eslint-disable-line promise/avoid-new
var script = document.createElement('script');
/**
*
* @returns {void}
*/
function scriptOnError() {
reject(new Error("Failed to import: ".concat(url)));
destructor();
}
/**
*
* @returns {void}
*/
function scriptOnLoad() {
resolve();
destructor();
}
var destructor = function destructor() {
script.removeEventListener('error', scriptOnError);
script.removeEventListener('load', scriptOnLoad);
script.remove();
script.src = '';
};
script.defer = 'defer';
addScriptAtts(script, atts);
script.addEventListener('error', scriptOnError);
script.addEventListener('load', scriptOnLoad);
script.src = url;
document.head.append(script);
});
}
var extMathjax = {
name: 'mathjax',
init: function init(_ref) {
var _this = this;
var $ = _ref.$,
importLocale = _ref.importLocale;
return _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee2() {
var strings, svgEditor, svgCanvas, mathjaxSrcSecure, uiStrings, math, locationX, locationY, mathjaxLoaded, saveMath, buttons;
return regeneratorRuntime.wrap(function _callee2$(_context2) {
while (1) {
switch (_context2.prev = _context2.next) {
case 0:
saveMath = function _ref2() {
var code = $('#mathjax_code_textarea').val(); // displaystyle to force MathJax NOT to use the inline style. Because it is
// less fancy!
MathJax.Hub.queue.Push(['Text', math, '\\displaystyle{' + code + '}']);
/*
* The MathJax library doesn't want to bloat your webpage so it creates
* every symbol (glymph) you need only once. These are saved in a `<svg>` on
* the top of your html document, just under the body tag. Each glymph has
* its unique id and is saved as a `<path>` in the `<defs>` tag of the `<svg>`
*
* Then when the symbols are needed in the rest of your html document they
* are refferd to by a `<use>` tag.
* Because of bug 1076 we can't just grab the defs tag on the top and add it
* to your formula's `<svg>` and copy the lot. So we have to replace each
* `<use>` tag by its `<path>`.
*/
MathJax.Hub.queue.Push(function () {
var mathjaxMath = $('.MathJax_SVG');
var svg = $(mathjaxMath.html());
svg.find('use').each(function () {
// TODO: find a less pragmatic and more elegant solution to this.
var id = $(this).attr('href') ? $(this).attr('href').slice(1) // Works in Chrome.
: $(this).attr('xlink:href').slice(1); // Works in Firefox.
var glymph = $('#' + id).clone().removeAttr('id');
var x = $(this).attr('x');
var y = $(this).attr('y');
var transform = $(this).attr('transform');
if (transform && (x || y)) {
glymph.attr('transform', transform + ' translate(' + x + ',' + y + ')');
} else if (transform) {
glymph.attr('transform', transform);
} else if (x || y) {
glymph.attr('transform', 'translate(' + x + ',' + y + ')');
}
$(this).replaceWith(glymph);
}); // Remove the style tag because it interferes with SVG-Edit.
svg.removeAttr('style');
svg.attr('xmlns', 'http://www.w3.org/2000/svg');
svgCanvas.importSvgString($('<div>').append(svg.clone()).html(), true);
svgCanvas.ungroupSelectedElement(); // TODO: To undo the adding of the Formula you now have to undo twice.
// This should only be once!
svgCanvas.moveSelectedElements(locationX, locationY, true);
});
};
_context2.next = 3;
return importLocale();
case 3:
strings = _context2.sent;
svgEditor = _this;
svgCanvas = svgEditor.canvas; // Configuration of the MathJax extention.
// This will be added to the head tag before MathJax is loaded.
/* mathjaxConfiguration = `<script type="text/x-mathjax-config">
MathJax.Hub.Config({
extensions: ['tex2jax.js'],
jax: ['input/TeX', 'output/SVG'],
showProcessingMessages: true,
showMathMenu: false,
showMathMenuMSIE: false,
errorSettings: {
message: ['[Math Processing Error]'],
style: {color: '#CC0000', 'font-style': 'italic'}
},
elements: [],
tex2jax: {
ignoreClass: 'tex2jax_ignore2', processClass: 'tex2jax_process2',
},
TeX: {
extensions: ['AMSmath.js', 'AMSsymbols.js', 'noErrors.js', 'noUndefined.js']
},
SVG: {
}
});
</script>`, */
// mathjaxSrc = 'http://cdn.mathjax.org/mathjax/latest/MathJax.js',
// Had been on https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-AMS-MML_SVG.js
// Obtained Text-AMS-MML_SVG.js from https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.3/config/TeX-AMS-MML_SVG.js
mathjaxSrcSecure = 'mathjax/MathJax.min.js?config=TeX-AMS-MML_SVG.js', uiStrings = svgEditor.uiStrings;
mathjaxLoaded = false; // TODO: Implement language support. Move these uiStrings to the locale files and
// the code to the langReady callback. Also i18nize alert and HTML below
$.extend(uiStrings, {
mathjax: {
embed_svg: 'Save as mathematics',
embed_mathml: 'Save as figure',
svg_save_warning: 'The math will be transformed into a figure is manipulatable like everything else. You will not be able to manipulate the TeX-code anymore. ',
mathml_save_warning: 'Advised. The math will be saved as a figure.',
title: 'Mathematics code editor'
}
});
/**
*
* @returns {void}
*/
buttons = [{
id: 'tool_mathjax',
type: 'mode',
icon: svgEditor.curConfig.extIconsPath + 'mathjax.png',
events: {
click: function click() {
return _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee() {
return regeneratorRuntime.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
// Set the mode.
svgCanvas.setMode('mathjax'); // Only load Mathjax when needed, we don't want to strain Svg-Edit any more.
// From this point on it is very probable that it will be needed, so load it.
if (!(mathjaxLoaded === false)) {
_context.next = 17;
break;
}
$('<div id="mathjax">' + '<!-- Here is where MathJax creates the math -->' + '<div id="mathjax_creator" class="tex2jax_process" style="display:none">' + '$${}$$' + '</div>' + '<div id="mathjax_overlay"></div>' + '<div id="mathjax_container">' + '<div id="tool_mathjax_back" class="toolbar_button">' + '<button id="tool_mathjax_save">OK</button>' + '<button id="tool_mathjax_cancel">Cancel</button>' + '</div>' + '<fieldset>' + '<legend id="mathjax_legend">Mathematics Editor</legend>' + '<label>' + '<span id="mathjax_explication">Please type your mathematics in ' + '<a href="https://en.wikipedia.org/wiki/Help:Displaying_a_formula" target="_blank">TeX</a> code.</span></label>' + '<textarea id="mathjax_code_textarea" spellcheck="false"></textarea>' + '</fieldset>' + '</div>' + '</div>').insertAfter('#svg_prefs').hide(); // Make the MathEditor draggable.
$('#mathjax_container').draggable({
cancel: 'button,fieldset',
containment: 'window'
}); // Add functionality and picture to cancel button.
$('#tool_mathjax_cancel').prepend($.getSvgIcon('cancel', true)).on('click touched', function () {
$('#mathjax').hide();
}); // Add functionality and picture to the save button.
$('#tool_mathjax_save').prepend($.getSvgIcon('ok', true)).on('click touched', function () {
saveMath();
$('#mathjax').hide();
}); // MathJax preprocessing has to ignore most of the page.
$('body').addClass('tex2jax_ignore'); // Now get (and run) the MathJax Library.
// Todo: insert script with modules once widely supported
// and if MathJax (and its `TeX-AMS-MML_SVG.js` dependency) ends up
// providing an ES6 module export: https://github.com/mathjax/MathJax/issues/1998
/*
const modularVersion = !('svgEditor' in window) ||
!window.svgEditor ||
window.svgEditor.modules !== false;
// Add as second argument to `importScript`
{
type: modularVersion
? 'module' // Make this the default when widely supported
: 'text/javascript'
}
// If only using modules, just use this:
const {default: MathJax} = await importModule( // or `import()` when widely supported
svgEditor.curConfig.extIconsPath + mathjaxSrcSecure
);
*/
// We use `extIconsPath` here for now as it does not vary with
// the modular type as does `extPath`
_context.prev = 7;
_context.next = 10;
return importScript(svgEditor.curConfig.extIconsPath + mathjaxSrcSecure);
case 10:
// When MathJax is loaded get the div where the math will be rendered.
MathJax.Hub.queue.Push(function () {
math = MathJax.Hub.getAllJax('#mathjax_creator')[0];
console.log(math); // eslint-disable-line no-console
mathjaxLoaded = true;
console.log('MathJax Loaded'); // eslint-disable-line no-console
});
_context.next = 17;
break;
case 13:
_context.prev = 13;
_context.t0 = _context["catch"](7);
console.log('Failed loading MathJax.'); // eslint-disable-line no-console
$.alert('Failed loading MathJax. You will not be able to change the mathematics.');
case 17:
case "end":
return _context.stop();
}
}
}, _callee, null, [[7, 13]]);
}))();
}
}
}];
return _context2.abrupt("return", {
name: strings.name,
svgicons: svgEditor.curConfig.extIconsPath + 'mathjax-icons.xml',
buttons: strings.buttons.map(function (button, i) {
return Object.assign(buttons[i], button);
}),
mouseDown: function mouseDown() {
if (svgCanvas.getMode() === 'mathjax') {
return {
started: true
};
}
return undefined;
},
mouseUp: function mouseUp(opts) {
if (svgCanvas.getMode() === 'mathjax') {
// Get the coordinates from your mouse.
var zoom = svgCanvas.getZoom(); // Get the actual coordinate by dividing by the zoom value
locationX = opts.mouse_x / zoom;
locationY = opts.mouse_y / zoom;
$('#mathjax').show();
return {
started: false
}; // Otherwise the last selected object dissapears.
}
return undefined;
},
callback: function callback() {
$('<style>').text('#mathjax fieldset{' + 'padding: 5px;' + 'margin: 5px;' + 'border: 1px solid #DDD;' + '}' + '#mathjax label{' + 'display: block;' + 'margin: .5em;' + '}' + '#mathjax legend {' + 'max-width:195px;' + '}' + '#mathjax_overlay {' + 'position: absolute;' + 'top: 0;' + 'left: 0;' + 'right: 0;' + 'bottom: 0;' + 'background-color: black;' + 'opacity: 0.6;' + 'z-index: 20000;' + '}' + '#mathjax_container {' + 'position: absolute;' + 'top: 50px;' + 'padding: 10px;' + 'background-color: #B0B0B0;' + 'border: 1px outset #777;' + 'opacity: 1.0;' + 'font-family: Verdana, Helvetica, sans-serif;' + 'font-size: .8em;' + 'z-index: 20001;' + '}' + '#tool_mathjax_back {' + 'margin-left: 1em;' + 'overflow: auto;' + '}' + '#mathjax_legend{' + 'font-weight: bold;' + 'font-size:1.1em;' + '}' + '#mathjax_code_textarea {\\n' + 'margin: 5px .7em;' + 'overflow: hidden;' + 'width: 416px;' + 'display: block;' + 'height: 100px;' + '}').appendTo('head'); // Add the MathJax configuration.
// $(mathjaxConfiguration).appendTo('head');
}
});
case 11:
case "end":
return _context2.stop();
}
}
}, _callee2);
}))();
}
};
return extMathjax;
}());