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// @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
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