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Add support for extpfeil extension -- more stretchy arrows (resolves issue #93)

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Davide P. Cervone 2011-09-10 19:29:29 -04:00
parent 58d876b417
commit efbc1612f3
2 changed files with 100 additions and 0 deletions
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extensions/TeX/extpfeil.js Normal file
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/*
* /MathJax/extensions/TeX/extpfeil.js
*
* Copyright (c) 2010 Design Science, Inc.
*
* Part of the MathJax library.
* See http://www.mathjax.org for details.
*
* Licensed under the Apache License, Version 2.0;
* you may not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var b="1.1";var c=MathJax.InputJax.TeX,a=c.Definitions;MathJax.Hub.Insert(a,{macros:{xtwoheadrightarrow:["Extension","AMSmath"],xtwoheadleftarrow:["Extension","AMSmath"],xmapsto:["Extension","AMSmath"],xlongequal:["Extension","AMSmath"],xtofrom:["Extension","AMSmath"],Newextarrow:["Extension","AMSmath"]}});MathJax.Hub.Register.StartupHook("TeX AMSmath Ready",function(){MathJax.Hub.Insert(a,{macros:{xtwoheadrightarrow:["xArrow",8608,12,16],xtwoheadleftarrow:["xArrow",8606,17,13],xmapsto:["xArrow",8614,6,7],xlongequal:["xArrow",61,7,7],xtofrom:["xArrow",8644,12,12],Newextarrow:"NewExtArrow"}})});c.Parse.Augment({NewExtArrow:function(d){var f=this.GetArgument(d),g=this.GetArgument(d),e=this.GetArgument(d);if(!f.match(/^\\([a-z]+|.)$/i)){c.Error("First argument to "+d+" must be a control sequence name")}if(!g.match(/^(\d+),(\d+)$/)){c.Error("Second argument to "+d+" must be two integers separated by a comma")}if(!e.match(/^(\d+|0x[0-9A-F]+)$/i)){c.Error("Third argument to "+d+" must be a unicode character number")}f=f.substr(1);g=g.split(",");e=parseInt(e);a.macros[f]=["xArrow",e,parseInt(g[0]),parseInt(g[1])]}});MathJax.Hub.Startup.signal.Post("TeX extpfeil Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/extpfeil.js");

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/*************************************************************
*
* MathJax/extensions/TeX/extpfeil.js
*
* Implements additional stretchy arrow macros.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2011 Design Science, Inc.
*
* 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.Hub.Register.StartupHook("TeX Jax Ready",function () {
var VERSION = "1.1";
var TEX = MathJax.InputJax.TeX,
TEXDEF = TEX.Definitions;
//
// Define the arrows to load the AMSmath extension
// (since they need its xArrow method)
//
MathJax.Hub.Insert(TEXDEF,{
macros: {
xtwoheadrightarrow: ['Extension','AMSmath'],
xtwoheadleftarrow: ['Extension','AMSmath'],
xmapsto: ['Extension','AMSmath'],
xlongequal: ['Extension','AMSmath'],
xtofrom: ['Extension','AMSmath'],
Newextarrow: ['Extension','AMSmath']
}
});
//
// 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]+|.)$/i))
{TEX.Error("First argument to "+name+" must be a control sequence name")}
if (!space.match(/^(\d+),(\d+)$/))
{TEX.Error("Second argument to "+name+" must be two integers separated by a comma")}
if (!chr.match(/^(\d+|0x[0-9A-F]+)$/i))
{TEX.Error("Third argument to "+name+" must be a unicode character number")}
cs = cs.substr(1); space = space.split(","); chr = parseInt(chr);
TEXDEF.macros[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");