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/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*************************************************************
*
* MathJax/extensions/TeX/unicode.js
*
* Implements the \unicode extension to TeX to allow arbitrary unicode
* code points to be entered into the TeX file. You can specify
* the height and depth of the character (the width is determined by
* the browser), and the default font from which to take the character.
*
* Examples:
* \unicode{65} % the character 'A'
* \unicode{x41} % the character 'A'
* \unicode[.55,0.05]{x22D6} % less-than with dot, with height .55 and depth 0.05
* \unicode[.55,0.05][Geramond]{x22D6} % same taken from Geramond font
* \unicode[Garamond]{x22D6} % same, but with default height, depth of .8,.2
*
* Once a size and font are provided for a given code point, they need
* not be specified again in subsequent \unicode calls for that character.
* Note that a font list can be given, but Internet Explorer has a buggy
* implementation of font-family where it only looks in the first
* available font and if the glyph is not in that, it does not look at
* later fonts, but goes directly to the default font as set in the
* Internet-Options/Font panel. For this reason, the default font list is
* "STIXGeneral,'Arial Unicode MS'", so if the user has STIX fonts, the
* symbol will be taken from that (almost all the symbols are in
* STIXGeneral), otherwise Arial Unicode MS is tried.
*
* To configure the default font list, use
*
* MathJax.Hub.Config({
* TeX: {
* unicode: {
* fonts: "STIXGeneral,'Arial Unicode MS'"
* }
* }
* });
*
* The result of \unicode will have TeX class ORD (i.e., it will act like a
* variable). Use \mathbin, \mathrel, etc, to specify a different class.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2009-2017 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//
// The configuration defaults, augmented by the user settings
//
MathJax.Extension["TeX/unicode"] = {
version: "2.7.1",
unicode: {},
config: MathJax.Hub.CombineConfig("TeX.unicode",{
fonts: "STIXGeneral,'Arial Unicode MS'"
})
};
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
var TEX = MathJax.InputJax.TeX;
var MML = MathJax.ElementJax.mml;
var UNICODE = MathJax.Extension["TeX/unicode"].unicode;
//
// Add \unicode macro
//
TEX.Definitions.Add({macros: {unicode: 'Unicode'}},null,true);
//
// Implementation of \unicode in parser
//
TEX.Parse.Augment({
Unicode: function(name) {
var HD = this.GetBrackets(name), font;
if (HD) {
if (HD.replace(/ /g,"").match(/^(\d+(\.\d*)?|\.\d+),(\d+(\.\d*)?|\.\d+)$/))
{HD = HD.replace(/ /g,"").split(/,/); font = this.GetBrackets(name)}
else {font = HD; HD = null}
}
var n = this.trimSpaces(this.GetArgument(name)),
N = parseInt(n.match(/^x/) ? "0"+n : n);
if (!UNICODE[N]) {UNICODE[N] = [800,200,font,N]}
else if (!font) {font = UNICODE[N][2]}
if (HD) {
UNICODE[N][0] = Math.floor(HD[0]*1000);
UNICODE[N][1] = Math.floor(HD[1]*1000);
}
var variant = this.stack.env.font, def = {};
if (font) {
UNICODE[N][2] = def.fontfamily = font.replace(/"/g,"'");
if (variant) {
if (variant.match(/bold/)) {def.fontweight = "bold"}
if (variant.match(/italic|-mathit/)) {def.fontstyle = "italic"}
}
} else if (variant) {def.mathvariant = variant}
def.unicode = [].concat(UNICODE[N]); // make a copy
this.Push(MML.mtext(MML.entity("#"+n)).With(def));
}
});
MathJax.Hub.Startup.signal.Post("TeX unicode Ready");
});
MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
var MML = MathJax.ElementJax.mml;
var FONTS = MathJax.Extension["TeX/unicode"].config.fonts;
//
// Override getVariant to make one that includes the font and size
//
var GETVARIANT = MML.mbase.prototype.HTMLgetVariant;
MML.mbase.Augment({
HTMLgetVariant: function () {
var variant = GETVARIANT.apply(this,arguments);
if (variant.unicode) {delete variant.unicode; delete variant.FONTS} // clear font cache in case of restart
if (!this.unicode) {return variant}
variant.unicode = true;
if (!variant.defaultFont) {
variant = MathJax.Hub.Insert({},variant); // make a copy
variant.defaultFont = {family:FONTS};
}
var family = this.unicode[2]; if (family) {family += ","+FONTS} else {family = FONTS}
variant.defaultFont[this.unicode[3]] = [
this.unicode[0],this.unicode[1],500,0,500,
{isUnknown:true, isUnicode:true, font:family}
];
return variant;
}
});
});
MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
var MML = MathJax.ElementJax.mml;
var FONTS = MathJax.Extension["TeX/unicode"].config.fonts;
//
// Override getVariant to make one that includes the font and size
//
var GETVARIANT = MML.mbase.prototype.SVGgetVariant;
MML.mbase.Augment({
SVGgetVariant: function () {
var variant = GETVARIANT.call(this);
if (variant.unicode) {delete variant.unicode; delete variant.FONTS} // clear font cache in case of restart
if (!this.unicode) {return variant}
variant.unicode = true;
if (!variant.forceFamily) {variant = MathJax.Hub.Insert({},variant)} // make a copy
variant.defaultFamily = FONTS; variant.noRemap = true;
variant.h = this.unicode[0]; variant.d = this.unicode[1];
return variant;
}
});
});
MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/unicode.js");
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