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Diffstat (limited to 'js/mathjax/extensions/TeX/bbox.js')
| -rw-r--r-- | js/mathjax/extensions/TeX/bbox.js | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/js/mathjax/extensions/TeX/bbox.js b/js/mathjax/extensions/TeX/bbox.js new file mode 100644 index 0000000..cc5440a --- /dev/null +++ b/js/mathjax/extensions/TeX/bbox.js @@ -0,0 +1,104 @@ +// @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/bbox.js + * + * This file implements the \bbox macro, which creates an box that + * can be styled (for background colors, and so on). You can include + * an optional dimension that tells how much extra padding to include + * around the bounding box for the mathematics, or a color specification + * for the background color to use, or both. E.g., + * + * \bbox[2pt]{x+y} % an invisible box around x+y with 2pt of extra space + * \bbox[green]{x+y} % a green box around x+y + * \bbox[green,2pt]{x+y} % a green box with 2pt of extra space + * + * You can also specify style attributes, for example + * + * \bbox[red,border:3px solid blue,5px]{x+y} + * + * would give a red background with a 3px solid blue border that has 5px + * of padding between the border and the mathematics. Note that not all + * output formats support the style specifications. In particular, the + * NativeMML output depends on the browser to render the attributes, and + * not all MathML renderers will honor them (e.g., MathPlayer2 doesn't + * render border styles). + * + * This file will be loaded automatically when \bbox is first used. + * + * --------------------------------------------------------------------- + * + * Copyright (c) 2011-2020 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. + */ + +MathJax.Extension["TeX/bbox"] = { + version: "2.7.9" +}; + +MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () { + + var TEX = MathJax.InputJax.TeX, + MML = MathJax.ElementJax.mml; + + TEX.Definitions.Add({macros: {bbox: "BBox"}},null,true); + + TEX.Parse.Augment({ + BBox: function (name) { + var bbox = this.GetBrackets(name,""), + math = this.ParseArg(name); + var parts = bbox.split(/,/), def, background, style; + for (var i = 0, m = parts.length; i < m; i++) { + var part = parts[i].replace(/^\s+/,'').replace(/\s+$/,''); + var match = part.match(/^(\.\d+|\d+(\.\d*)?)(pt|em|ex|mu|px|in|cm|mm)$/); + if (match) { + if (def) + {TEX.Error(["MultipleBBoxProperty","%1 specified twice in %2","Padding",name])} + var pad = this.BBoxPadding(match[1]+match[3]); + if (pad) def = {height:"+"+pad, depth:"+"+pad, lspace:pad, width:"+"+(2*match[1])+match[3]}; + } else if (part.match(/^([a-z0-9]+|\#[0-9a-f]{6}|\#[0-9a-f]{3})$/i)) { + if (background) + {TEX.Error(["MultipleBBoxProperty","%1 specified twice in %2","Background",name])} + background = part; + } else if (part.match(/^[-a-z]+:/i)) { + if (style) + {TEX.Error(["MultipleBBoxProperty","%1 specified twice in %2", "Style",name])} + style = this.BBoxStyle(part); + } else if (part !== "") { + TEX.Error( + ["InvalidBBoxProperty", + "'%1' doesn't look like a color, a padding dimension, or a style", + part] + ); + } + } + if (def) {math = MML.mpadded(math).With(def)} + if (background || style) { + math = MML.mstyle(math).With({mathbackground:background, style:style}); + } + this.Push(math); + }, + BBoxStyle: function (styles) {return styles}, + BBoxPadding: function (pad) {return pad} + }); + + MathJax.Hub.Startup.signal.Post("TeX bbox Ready"); + +}); + +MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/bbox.js"); +// @license-end |