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Diffstat (limited to 'js/mathjax/extensions/TeX/unicode.js')
| -rw-r--r-- | js/mathjax/extensions/TeX/unicode.js | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/js/mathjax/extensions/TeX/unicode.js b/js/mathjax/extensions/TeX/unicode.js new file mode 100644 index 0000000..0c3e50a --- /dev/null +++ b/js/mathjax/extensions/TeX/unicode.js @@ -0,0 +1,172 @@ +// @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7dn=apache-2.0.txt Apache-2.0 +/* -*- 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) 2009-2020 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: "2.7.9", + 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+)$/)) + {HD = HD.replace(/ /g,"").split(/,/); font = this.GetBrackets(name)} + else {font = HD; HD = null} + } + var n = this.trimSpaces(this.GetArgument(name)).replace(/^0x/,"x"); + if (!n.match(/^(x[0-9A-Fa-f]+|[0-9]+)$/)) { + TEX.Error(["BadUnicode","Argument to \\unicode must be a number"]); + } + var 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"); +// @license-end |