mirror of
https://github.com/kovidgoyal/calibre.git
synced 2025-10-30 18:22:25 -04:00
108 lines
4.1 KiB
JavaScript
108 lines
4.1 KiB
JavaScript
/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
|
|
|
/*************************************************************
|
|
*
|
|
* MathJax/extensions/TeX/mathchoice.js
|
|
*
|
|
* Implements the \mathchoice macro (rarely used)
|
|
*
|
|
* ---------------------------------------------------------------------
|
|
*
|
|
* Copyright (c) 2009-2015 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.Hub.Register.StartupHook("TeX Jax Ready",function () {
|
|
var VERSION = "2.6.0";
|
|
|
|
var MML = MathJax.ElementJax.mml;
|
|
var TEX = MathJax.InputJax.TeX;
|
|
var TEXDEF = TEX.Definitions;
|
|
|
|
TEXDEF.Add({macros: {mathchoice: 'MathChoice'}},null,true);
|
|
|
|
TEX.Parse.Augment({
|
|
MathChoice: function (name) {
|
|
var D = this.ParseArg(name),
|
|
T = this.ParseArg(name),
|
|
S = this.ParseArg(name),
|
|
SS = this.ParseArg(name);
|
|
this.Push(MML.TeXmathchoice(D,T,S,SS));
|
|
}
|
|
});
|
|
|
|
MML.TeXmathchoice = MML.mbase.Subclass({
|
|
type: "TeXmathchoice", notParent: true,
|
|
choice: function () {
|
|
if (this.selection != null) return this.selection;
|
|
if (this.choosing) return 2; // prevent infinite loops: see issue #1151
|
|
this.choosing = true;
|
|
var selection = 0, values = this.getValues("displaystyle","scriptlevel");
|
|
if (values.scriptlevel > 0) {selection = Math.min(3,values.scriptlevel+1)}
|
|
else {selection = (values.displaystyle ? 0 : 1)}
|
|
// only cache the result if we are actually in place in a <math> tag.
|
|
var node = this.inherit; while (node && node.type !== "math") node = node.inherit;
|
|
if (node) this.selection = selection;
|
|
this.choosing = false;
|
|
return selection;
|
|
},
|
|
selected: function () {return this.data[this.choice()]},
|
|
setTeXclass: function (prev) {return this.selected().setTeXclass(prev)},
|
|
isSpacelike: function () {return this.selected().isSpacelike()},
|
|
isEmbellished: function () {return this.selected().isEmbellished()},
|
|
Core: function () {return this.selected()},
|
|
CoreMO: function () {return this.selected().CoreMO()},
|
|
toHTML: function (span) {
|
|
span = this.HTMLcreateSpan(span);
|
|
span.bbox = this.Core().toHTML(span).bbox;
|
|
// Firefox doesn't correctly handle a span with a negatively sized content,
|
|
// so move marginLeft to main span (this is a hack to get \iiiint to work).
|
|
// FIXME: This is a symptom of a more general problem with Firefox, and
|
|
// there probably needs to be a more general solution (e.g., modifying
|
|
// HTMLhandleSpace() to get the width and adjust the right margin to
|
|
// compensate for negative-width contents)
|
|
if (span.firstChild && span.firstChild.style.marginLeft) {
|
|
span.style.marginLeft = span.firstChild.style.marginLeft;
|
|
span.firstChild.style.marginLeft = "";
|
|
}
|
|
return span;
|
|
},
|
|
toSVG: function () {
|
|
var svg = this.Core().toSVG();
|
|
this.SVGsaveData(svg);
|
|
return svg;
|
|
},
|
|
toCommonHTML: function (node) {
|
|
node = this.CHTMLcreateNode(node);
|
|
this.CHTMLhandleStyle(node);
|
|
this.CHTMLhandleColor(node);
|
|
this.CHTMLaddChild(node,this.choice(),{});
|
|
return node;
|
|
},
|
|
toPreviewHTML: function(span) {
|
|
span = this.PHTMLcreateSpan(span);
|
|
this.PHTMLhandleStyle(span);
|
|
this.PHTMLhandleColor(span);
|
|
this.PHTMLaddChild(span,this.choice(),{});
|
|
return span;
|
|
}
|
|
});
|
|
|
|
MathJax.Hub.Startup.signal.Post("TeX mathchoice Ready");
|
|
|
|
});
|
|
|
|
MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/mathchoice.js");
|