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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/extpfeil.js
*
* Implements additional stretchy arrow macros.
*
* ---------------------------------------------------------------------
*
* 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/extpfeil"] = {
version: "2.7.9"
};
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
var TEX = MathJax.InputJax.TeX,
TEXDEF = TEX.Definitions;
//
// Define the arrows to load the AMSmath extension
// (since they need its xArrow method)
//
TEXDEF.Add({
macros: {
xtwoheadrightarrow: ['Extension','AMSmath'],
xtwoheadleftarrow: ['Extension','AMSmath'],
xmapsto: ['Extension','AMSmath'],
xlongequal: ['Extension','AMSmath'],
xtofrom: ['Extension','AMSmath'],
Newextarrow: ['Extension','AMSmath']
}
},null,true);
//
// Redefine the macros when AMSmath is loaded
//
MathJax.Hub.Register.StartupHook("TeX AMSmath Ready",function () {
MathJax.Hub.Insert(TEXDEF,{
macros: {
xtwoheadrightarrow: ['xArrow',0x21A0,12,16],
xtwoheadleftarrow: ['xArrow',0x219E,17,13],
xmapsto: ['xArrow',0x21A6,6,7],
xlongequal: ['xArrow',0x003D,7,7],
xtofrom: ['xArrow',0x21C4,12,12],
Newextarrow: 'NewExtArrow'
}
});
});
//
// Implements \Newextarrow to define a new arrow (not compatible with \newextarrow, but
// the equivalent for MathJax)
//
TEX.Parse.Augment({
NewExtArrow: function (name) {
var cs = this.GetArgument(name),
space = this.GetArgument(name),
chr = this.GetArgument(name);
if (!cs.match(/^\\([a-z]+|.)$/i)) {
TEX.Error(["NewextarrowArg1",
"First argument to %1 must be a control sequence name",name]);
}
if (!space.match(/^(\d+),(\d+)$/)) {
TEX.Error(
["NewextarrowArg2",
"Second argument to %1 must be two integers separated by a comma",
name]
);
}
if (!chr.match(/^(\d+|0x[0-9A-F]+)$/i)) {
TEX.Error(
["NewextarrowArg3",
"Third argument to %1 must be a unicode character number",
name]
);
}
cs = cs.substr(1); space = space.split(","); chr = parseInt(chr);
this.setDef(cs, ['xArrow', chr, parseInt(space[0]), parseInt(space[1])]);
}
});
MathJax.Hub.Startup.signal.Post("TeX extpfeil Ready");
});
MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/extpfeil.js");
// @license-end
|
