106 lines
3.4 KiB
JavaScript
106 lines
3.4 KiB
JavaScript
|
/*************************************************************
|
||
|
|
*
|
||
|
|
* MathJax/extensions/TeX/cancel.js
|
||
|
|
*
|
||
|
|
* Implements the \cancel, \bcancel, \xcancel, and \cancelto macros.
|
||
|
|
*
|
||
|
|
* Usage:
|
||
|
|
*
|
||
|
|
* \cancel{math} % strikeout math from lower left to upper right
|
||
|
|
* \bcancel{math} % strikeout from upper left to lower right
|
||
|
|
* \xcancel{math} % strikeout with an X
|
||
|
|
* \cancelto{value}{math} % strikeout with arrow going to value
|
||
|
|
*
|
||
|
|
* ---------------------------------------------------------------------
|
||
|
|
*
|
||
|
|
* Copyright (c) 2011-2012 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.Extension["TeX/cancel"] = {
|
||
|
|
version: "2.0",
|
||
|
|
|
||
|
|
//
|
||
|
|
// The attributes allowed in \enclose{notation}[attributes]{math}
|
||
|
|
//
|
||
|
|
ALLOWED: {
|
||
|
|
arrow: 1,
|
||
|
|
color: 1, mathcolor: 1,
|
||
|
|
background: 1, mathbackground: 1,
|
||
|
|
padding: 1,
|
||
|
|
thickness: 1
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
|
||
|
|
var TEX = MathJax.InputJax.TeX,
|
||
|
|
MACROS = TEX.Definitions.macros,
|
||
|
|
MML = MathJax.ElementJax.mml,
|
||
|
|
CANCEL = MathJax.Extension["TeX/cancel"];
|
||
|
|
|
||
|
|
CANCEL.setAttributes = function (def,attr) {
|
||
|
|
if (attr !== "") {
|
||
|
|
attr = attr.replace(/ /g,"").split(/,/);
|
||
|
|
for (var i = 0, m = attr.length; i < m; i++) {
|
||
|
|
var keyvalue = attr[i].split(/[:=]/);
|
||
|
|
if (CANCEL.ALLOWED[keyvalue[0]]) {
|
||
|
|
if (keyvalue[1] === "true") {keyvalue[1] = true}
|
||
|
|
if (keyvalue[1] === "false") {keyvalue[1] = false}
|
||
|
|
def[keyvalue[0]] = keyvalue[1];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return def;
|
||
|
|
};
|
||
|
|
|
||
|
|
//
|
||
|
|
// Set up macro
|
||
|
|
//
|
||
|
|
MACROS.cancel = ['Cancel',MML.NOTATION.UPDIAGONALSTRIKE];
|
||
|
|
MACROS.bcancel = ['Cancel',MML.NOTATION.DOWNDIAGONALSTRIKE];
|
||
|
|
MACROS.xcancel = ['Cancel',MML.NOTATION.UPDIAGONALSTRIKE+" "+MML.NOTATION.DOWNDIAGONALSTRIKE];
|
||
|
|
MACROS.cancelto = 'CancelTo';
|
||
|
|
|
||
|
|
TEX.Parse.Augment({
|
||
|
|
//
|
||
|
|
// Implement \cancel[attributes]{math},
|
||
|
|
// \bcancel[attributes]{math}, and
|
||
|
|
// \xcancel[attributes]{math}
|
||
|
|
//
|
||
|
|
Cancel: function(name,notation) {
|
||
|
|
var attr = this.GetBrackets(name,""), math = this.ParseArg(name);
|
||
|
|
var def = CANCEL.setAttributes({notation: notation},attr);
|
||
|
|
this.Push(MML.menclose(math).With(def));
|
||
|
|
},
|
||
|
|
|
||
|
|
//
|
||
|
|
// Implement \cancelto{value}[attributes]{math}
|
||
|
|
//
|
||
|
|
CancelTo: function(name,notation) {
|
||
|
|
var value = this.ParseArg(name),
|
||
|
|
attr = this.GetBrackets(name,""),
|
||
|
|
math = this.ParseArg(name);
|
||
|
|
var def = CANCEL.setAttributes({notation: MML.NOTATION.UPDIAGONALSTRIKE, arrow:true},attr);
|
||
|
|
value = MML.mpadded(value).With({depth:"-.1em",height:"+.1em",voffset:".1em"});
|
||
|
|
this.Push(MML.msup(MML.menclose(math).With(def),value));
|
||
|
|
}
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
MathJax.Hub.Startup.signal.Post("TeX cancel Ready");
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/cancel.js");
|