/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*************************************************************
*
* MathJax/jax/output/PreviewHTML/jax.js
*
* Implements the PreviewHTML OutputJax that displays mathematics
* using HTML to position the characters from math fonts
* in their proper locations.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2013-2015 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.
*/
(function (AJAX,HUB,HTML,PHTML) {
var MML;
var EVENT, TOUCH, HOVER; // filled in later
var FONTS = "'Times New Roman',Times,STIXGeneral,serif";
var STYLES = {
".MJXp-script": {"font-size":".8em"},
".MJXp-right": {
"-webkit-transform-origin":"right",
"-moz-transform-origin":"right",
"-ms-transform-origin":"right",
"-o-transform-origin":"right",
"transform-origin":"right"
},
".MJXp-bold": {"font-weight":"bold"},
".MJXp-italic": {"font-style":"italic"},
".MJXp-scr": {"font-family":"MathJax_Script,"+FONTS},
".MJXp-frak": {"font-family":"MathJax_Fraktur,"+FONTS},
".MJXp-sf": {"font-family":"MathJax_SansSerif,"+FONTS},
".MJXp-cal": {"font-family":"MathJax_Caligraphic,"+FONTS},
".MJXp-mono": {"font-family":"MathJax_Typewriter,"+FONTS},
".MJXp-largeop": {"font-size":"150%"},
".MJXp-largeop.MJXp-int": {"vertical-align":"-.2em"},
".MJXp-math": {
"display": "inline-block",
"line-height": "1.2",
"text-indent": "0",
"font-family": FONTS,
"white-space":"nowrap",
"border-collapse":"collapse"
},
".MJXp-display": {
"display": "block",
"text-align": "center",
"margin": "1em 0"
},
".MJXp-math span": {"display": "inline-block"},
".MJXp-box": {"display":"block!important", "text-align": "center"},
".MJXp-box:after": {"content": '" "'}, // needed for when there is no DOCTYPE
".MJXp-rule": {"display":"block!important", "margin-top":".1em"},
".MJXp-char": {"display":"block!important"},
".MJXp-mo": {"margin": "0 .15em"},
".MJXp-mfrac": {"margin": "0 .125em", "vertical-align":".25em"},
".MJXp-denom": {"display": "inline-table!important", "width":"100%"},
".MJXp-denom > *": {"display": "table-row!important"},
".MJXp-surd": {"vertical-align":"top"},
".MJXp-surd > *": {"display":"block!important"},
".MJXp-script-box > * ": {"display":"table!important", "height":"50%"},
".MJXp-script-box > * > *": {"display":"table-cell!important","vertical-align":"top"},
".MJXp-script-box > *:last-child > *": {"vertical-align":"bottom"},
".MJXp-script-box > * > * > *": {"display":"block!important"},
".MJXp-mphantom": {"visibility": "hidden"},
".MJXp-munderover": {"display":"inline-table!important"},
".MJXp-over": {"display":"inline-block!important","text-align":"center"},
".MJXp-over > *": {"display":"block!important"},
".MJXp-munderover > *": {"display":"table-row!important"},
".MJXp-mtable": {"vertical-align":".25em", "margin":"0 .125em"},
".MJXp-mtable > *": {"display":"inline-table!important", "vertical-align":"middle"},
".MJXp-mtr": {"display":"table-row!important"},
".MJXp-mtd": {"display":"table-cell!important","text-align":"center","padding":".5em 0 0 .5em"},
".MJXp-mtr > .MJXp-mtd:first-child": {"padding-left":0},
".MJXp-mtr:first-child > .MJXp-mtd": {"padding-top":0},
".MJXp-mlabeledtr": {"display":"table-row!important"},
".MJXp-mlabeledtr > .MJXp-mtd:first-child": {"padding-left":0},
".MJXp-mlabeledtr:first-child > .MJXp-mtd": {"padding-top":0},
".MJXp-merror": {
"background-color": "#FFFF88",
color: "#CC0000",
border: "1px solid #CC0000",
padding: "1px 3px",
"font-style": "normal",
"font-size": "90%"
}
};
(function () {
for (var i = 0; i < 10; i++) {
var scale = "scaleX(."+i+")";
STYLES[".MJXp-scale"+i] = {
"-webkit-transform":scale,
"-moz-transform":scale,
"-ms-transform":scale,
"-o-transform":scale,
"transform":scale
}
}
})();
var BIGDIMEN = 1000000;
var V = "V", H = "H";
PHTML.Augment({
settings: HUB.config.menuSettings,
config: {styles: STYLES},
hideProcessedMath: false, // use display:none until all math is processed
maxStretchyParts: 1000, // limit the number of parts allowed for
// stretchy operators. See issue 366.
Config: function () {
if (!this.require) {this.require = []}
this.SUPER(arguments).Config.call(this); var settings = this.settings;
if (settings.scale) {this.config.scale = settings.scale}
this.require.push(MathJax.OutputJax.extensionDir+"/MathEvents.js");
},
Startup: function () {
//
// Set up event handling
//
EVENT = MathJax.Extension.MathEvents.Event;
TOUCH = MathJax.Extension.MathEvents.Touch;
HOVER = MathJax.Extension.MathEvents.Hover;
this.ContextMenu = EVENT.ContextMenu;
this.Mousedown = EVENT.AltContextMenu;
this.Mouseover = HOVER.Mouseover;
this.Mouseout = HOVER.Mouseout;
this.Mousemove = HOVER.Mousemove;
//
// Determine pixels per inch
//
var div = HTML.addElement(document.body,"div",{style:{width:"5in"}});
this.pxPerInch = div.offsetWidth/5; div.parentNode.removeChild(div);
//
// Set up styles and preload web fonts
//
return AJAX.Styles(this.config.styles,["InitializePHTML",this]);
},
InitializePHTML: function () {
},
preTranslate: function (state) {
var scripts = state.jax[this.id], i, m = scripts.length,
script, prev, span, div, jax;
//
// Loop through the scripts
//
for (i = 0; i < m; i++) {
script = scripts[i]; if (!script.parentNode) continue;
//
// Remove any existing output
//
prev = script.previousSibling;
if (prev && String(prev.className).match(/^MathJax_PHTML(_Display)?( MathJax_Processing)?$/))
{prev.parentNode.removeChild(prev)}
//
// Add the span, and a div if in display mode,
// then set the role and mark it as being processed
//
jax = script.MathJax.elementJax; if (!jax) continue;
jax.PHTML = {display: (jax.root.Get("display") === "block")}
span = div = HTML.Element("span",{
className:"MathJax_PHTML", id:jax.inputID+"-Frame", isMathJax:true, jaxID:this.id,
oncontextmenu:EVENT.Menu, onmousedown: EVENT.Mousedown,
onmouseover:EVENT.Mouseover, onmouseout:EVENT.Mouseout, onmousemove:EVENT.Mousemove,
onclick:EVENT.Click, ondblclick:EVENT.DblClick,
// Added for keyboard accessible menu.
onkeydown: EVENT.Keydown, tabIndex: "0"
});
if (HUB.Browser.noContextMenu) {
span.ontouchstart = TOUCH.start;
span.ontouchend = TOUCH.end;
}
if (jax.PHTML.display) {
div = HTML.Element("div",{className:"MathJax_PHTML_Display"});
div.appendChild(span);
}
//
div.className += " MathJax_Processing";
script.parentNode.insertBefore(div,script);
}
},
Translate: function (script,state) {
if (!script.parentNode) return;
//
// Get the data about the math
//
var jax = script.MathJax.elementJax, math = jax.root,
span = document.getElementById(jax.inputID+"-Frame"),
div = (jax.PHTML.display ? span.parentNode : span);
//
// Typeset the math
//
this.initPHTML(math,span);
// math.setTeXclass();
try {math.toPreviewHTML(span)} catch (err) {
if (err.restart) {while (span.firstChild) {span.removeChild(span.firstChild)}}
throw err;
}
//
// Put it in place, and remove the processing marker
//
div.className = div.className.split(/ /)[0];
//
// Check if we are hiding the math until more is processed
//
if (this.hideProcessedMath) {
//
// Hide the math and don't let its preview be removed
//
div.className += " MathJax_Processed";
if (script.MathJax.preview) {
jax.PHTML.preview = script.MathJax.preview;
delete script.MathJax.preview;
}
}
},
postTranslate: function (state) {
var scripts = state.jax[this.id];
if (!this.hideProcessedMath) return;
for (var i = 0, m = scripts.length; i < m; i++) {
var script = scripts[i];
if (script && script.MathJax.elementJax) {
//
// Remove the processed marker
//
script.previousSibling.className = script.previousSibling.className.split(/ /)[0];
var data = script.MathJax.elementJax.PHTML;
//
// Remove the preview, if any
//
if (data.preview) {
data.preview.innerHTML = "";
script.MathJax.preview = data.preview;
delete data.preview;
}
}
}
},
getJaxFromMath: function (math) {
if (math.parentNode.className === "MathJax_PHTML_Display") {math = math.parentNode}
do {math = math.nextSibling} while (math && math.nodeName.toLowerCase() !== "script");
return HUB.getJaxFor(math);
},
getHoverSpan: function (jax,math) {return jax.root.PHTMLspanElement()},
getHoverBBox: function (jax,span,math) {
var bbox = jax.root.PHTML, em = jax.PHTML.outerEm;
var BBOX = {w:bbox.w*em, h:bbox.h*em, d:bbox.d*em};
if (bbox.width) {BBOX.width = bbox.width}
return BBOX;
},
Zoom: function (jax,span,math,Mw,Mh) {
//
// Re-render at larger size
//
span.className = "MathJax";
this.idPostfix = "-zoom"; jax.root.toPHTML(span,span); this.idPostfix = "";
//
// Get height and width of zoomed math and original math
//
span.style.position = "absolute";
if (!width) {math.style.position = "absolute"}
var zW = span.offsetWidth, zH = span.offsetHeight,
mH = math.offsetHeight, mW = math.offsetWidth;
if (mW === 0) {mW = math.parentNode.offsetWidth}; // IE7 gets mW == 0?
span.style.position = math.style.position = "";
//
return {Y:-EVENT.getBBox(span).h, mW:mW, mH:mH, zW:zW, zH:zH};
},
initPHTML: function (math,span) {},
Remove: function (jax) {
var span = document.getElementById(jax.inputID+"-Frame");
if (span) {
if (jax.PHTML.display) {span = span.parentNode}
span.parentNode.removeChild(span);
}
delete jax.PHTML;
},
ID: 0, idPostfix: "",
GetID: function () {this.ID++; return this.ID},
VARIANT: {
"bold": "MJXp-bold",
"italic": "MJXp-italic",
"bold-italic": "MJXp-bold MJXp-italic",
"script": "MJXp-scr",
"bold-script": "MJXp-scr MJXp-bold",
"fraktur": "MJXp-frak",
"bold-fraktur": "MJXp-frak MJXp-bold",
"monospace": "MJXp-mono",
"sans-serif": "MJXp-sf",
"-tex-caligraphic": "MJXp-cal"
},
MATHSPACE: {
veryverythinmathspace: 1/18,
verythinmathspace: 2/18,
thinmathspace: 3/18,
mediummathspace: 4/18,
thickmathspace: 5/18,
verythickmathspace: 6/18,
veryverythickmathspace: 7/18,
negativeveryverythinmathspace: -1/18,
negativeverythinmathspace: -2/18,
negativethinmathspace: -3/18,
negativemediummathspace: -4/18,
negativethickmathspace: -5/18,
negativeverythickmathspace: -6/18,
negativeveryverythickmathspace: -7/18,
thin: .08,
medium: .1,
thick: .15,
infinity: BIGDIMEN
},
TeX: {
x_height: .430554
},
pxPerInch: 72,
em: 16,
// ### FIXME: add more here
DELIMITERS: {
"(": {dir:V},
"{": {dir:V, w:.58},
"[": {dir:V},
"|": {dir:V, w:.275},
")": {dir:V},
"}": {dir:V, w:.58},
"]": {dir:V},
"/": {dir:V},
"\\": {dir:V},
"\u2223": {dir:V, w:.275},
"\u2225": {dir:V, w:.55},
"\u230A": {dir:V, w:.5},
"\u230B": {dir:V, w:.5},
"\u2308": {dir:V, w:.5},
"\u2309": {dir:V, w:.5},
"\u27E8": {dir:V, w:.5},
"\u27E9": {dir:V, w:.5},
"\u2191": {dir:V, w:.65},
"\u2193": {dir:V, w:.65},
"\u21D1": {dir:V, w:.75},
"\u21D3": {dir:V, w:.75},
"\u2195": {dir:V, w:.65},
"\u21D5": {dir:V, w:.75},
"\u27EE": {dir:V, w:.275},
"\u27EF": {dir:V, w:.275},
"\u23B0": {dir:V, w:.6},
"\u23B1": {dir:V, w:.6}
},
REMAPACCENT: {
"\u20D7":"\u2192", // vector arrow
"'": "\u02CB",
"`": "\u02CA",
".": "\u02D9",
"^": "\u02C6",
"-": "\u02C9",
"~": "\u02DC",
"\u00AF": "\u02C9", // macron
"\u00B0": "\u02DA", // degree sign
"\u00B4": "\u02CA", // acute accent
"\u0300": "\u02CB", // combining grave
"\u0301": "\u02CA", // combining acute
"\u0302": "\u02C6", // combining circumflex
"\u0303": "\u02DC", // combinig tilde
"\u0304": "\u02C9", // combining macron
"\u0305": "\u02C9", // combining overline
"\u0306": "\u02D8", // combining breve
"\u0307": "\u02D9", // combining dot
"\u0308": "\u00A8", // combining double dot
"\u030C": "\u02C7" // combining caron
},
REMAPACCENTUNDER: {
},
length2em: function (length,size) {
if (typeof(length) !== "string") {length = length.toString()}
if (length === "") {return ""}
if (length === MML.SIZE.NORMAL) {return 1}
if (length === MML.SIZE.BIG) {return 2}
if (length === MML.SIZE.SMALL) {return .71}
if (this.MATHSPACE[length]) {return this.MATHSPACE[length]}
var match = length.match(/^\s*([-+]?(?:\.\d+|\d+(?:\.\d*)?))?(pt|em|ex|mu|px|pc|in|mm|cm|%)?/);
var m = parseFloat(match[1]||"1"), unit = match[2];
if (size == null) {size = 1}
if (unit === "em") {return m}
if (unit === "ex") {return m * this.TeX.x_height}
if (unit === "%") {return m / 100 * size}
if (unit === "px") {return m / this.em}
if (unit === "pt") {return m / 10} // 10 pt to an em
if (unit === "pc") {return m * 1.2} // 12 pt to a pc
if (unit === "in") {return m * this.pxPerInch / this.em}
if (unit === "cm") {return m * this.pxPerInch / this.em / 2.54} // 2.54 cm to an inch
if (unit === "mm") {return m * this.pxPerInch / this.em / 25.4} // 10 mm to a cm
if (unit === "mu") {return m / 18} // 18mu to an em for the scriptlevel
return m*size; // relative to given size (or 1em as default)
},
Em: function (m) {
if (Math.abs(m) < .001) return "0em";
return (m.toFixed(3).replace(/\.?0+$/,""))+"em";
},
arrayEntry: function (a,i) {return a[Math.max(0,Math.min(i,a.length-1))]}
});
MathJax.Hub.Register.StartupHook("mml Jax Ready",function () {
MML = MathJax.ElementJax.mml;
MML.mbase.Augment({
toPreviewHTML: function (span,options) {
return this.PHTMLdefaultSpan(span,options);
},
PHTMLdefaultSpan: function (span,options) {
if (!options) options = {};
span = this.PHTMLcreateSpan(span);
this.PHTMLhandleStyle(span);
this.PHTMLhandleColor(span);
if (this.isToken) this.PHTMLhandleToken(span);
for (var i = 0, m = this.data.length; i < m; i++) this.PHTMLaddChild(span,i,options);
return span;
},
PHTMLaddChild: function (span,i,options) {
var child = this.data[i];
if (child) {
if (options.childSpans)
span = HTML.addElement(span,"span",{className:options.className});
child.toPreviewHTML(span);
if (!options.noBBox) {
this.PHTML.w += child.PHTML.w + child.PHTML.l + child.PHTML.r;
if (child.PHTML.h > this.PHTML.h) this.PHTML.h = child.PHTML.h;
if (child.PHTML.d > this.PHTML.d) this.PHTML.d = child.PHTML.d;
if (child.PHTML.t > this.PHTML.t) this.PHTML.t = child.PHTML.t;
if (child.PHTML.b > this.PHTML.b) this.PHTML.b = child.PHTML.b;
}
} else if (options.forceChild) {HTML.addElement(span,"span")}
},
PHTMLstretchChild: function (i,H,D) {
var data = this.data[i];
if (data && data.PHTMLcanStretch("Vertical",H,D)) {
var bbox = this.PHTML, dbox = data.PHTML, w = dbox.w;
data.PHTMLstretchV(H,D);
bbox.w += dbox.w - w;
if (dbox.h > bbox.h) bbox.h = dbox.h;
if (dbox.d > bbox.d) bbox.d = dbox.d;
}
},
PHTMLcreateSpan: function (span) {
if (!this.PHTML) this.PHTML = {};
this.PHTML = {w:0, h:0, d:0, l:0, r:0, t:0, b:0};
if (this.inferred) return span;
// ### FIXME: This is a hack to handle the different spacing of the
// ### integral sign in Times compared to CM fonts
if (this.type === "mo" && this.data.join("") === "\u222B") {PHTML.lastIsInt = true}
else if (this.type !== "mspace" || this.width !== "negativethinmathspace") {PHTML.lastIsInt = false}
// ###
if (!this.PHTMLspanID) {this.PHTMLspanID = PHTML.GetID()};
var id = (this.id || "MJXp-Span-"+this.PHTMLspanID);
return HTML.addElement(span,"span",{className:"MJXp-"+this.type, id:id});
},
PHTMLspanElement: function () {
if (!this.PHTMLspanID) {return null}
return document.getElementById(this.id||"MJXp-Span-"+this.PHTMLspanID);
},
PHTMLhandleToken: function (span) {
var values = this.getValues("mathvariant");
if (values.mathvariant !== MML.VARIANT.NORMAL) {
span.className += " "+PHTML.VARIANT[values.mathvariant];
}
},
PHTMLhandleStyle: function (span) {
if (this.style) span.style.cssText = this.style;
},
PHTMLhandleColor: function (span) {
if (this.mathcolor) {span.style.color = this.mathcolor}
if (this.mathbackground) {span.style.backgroundColor = this.mathbackground}
},
PHTMLhandleScriptlevel: function (span) {
// ### FIXME: Need to prevent getting too small
// ### and should keep track of scaling so it can be compensated for
var level = this.Get("scriptlevel");
if (level) span.className += " MJXp-script";
},
PHTMLhandleText: function (span,text) {
var c, n;
var H = 0, D = 0, W = 0;
for (var i = 0, m = text.length; i < m; i++) {
n = text.charCodeAt(i); c = text.charAt(i);
if (n >= 0xD800 && n < 0xDBFF) {
i++; n = (((n-0xD800)<<10)+(text.charCodeAt(i)-0xDC00))+0x10000;
}
var h = .7, d = .22, w = .5;
if (n < 127) {
if (c.match(/[A-Za-ehik-or-xz0-9]/)) d = 0;
if (c.match(/[A-HK-Z]/)) {w = .67} else if (c.match(/[IJ]/)) {w = .36}
if (c.match(/[acegm-su-z]/)) {h = .45} else if (c.match(/[ij]/)) {h = .75}
if (c.match(/[ijlt]/)) w = .28;
}
if (PHTML.DELIMITERS[c]) {w = PHTML.DELIMITERS[c].w || .4}
// ### FIXME: handle Greek
// ### Combining diacriticals (all sets), spacing modifiers
// ### arrows (all sets), widths of braces
if (h > H) H = h; if (d > D) D = d; W += w;
}
if (!this.CHML) this.PHTML = {};
this.PHTML = {h:.9, d:.3, w:W, l:0, r:0, t:H, b:D};
HTML.addText(span,text);
},
PHTMLbboxFor: function (n) {
if (this.data[n] && this.data[n].PHTML) return this.data[n].PHTML;
return {w:0, h:0, d:0, l:0, r:0, t:0, b:0};
},
PHTMLcanStretch: function (direction,H,D) {
if (this.isEmbellished()) {
var core = this.Core();
if (core && core !== this) {return core.PHTMLcanStretch(direction,H,D)}
}
return false;
},
PHTMLstretchV: function (h,d) {},
PHTMLstretchH: function (w) {},
CoreParent: function () {
var parent = this;
while (parent && parent.isEmbellished() &&
parent.CoreMO() === this && !parent.isa(MML.math)) {parent = parent.Parent()}
return parent;
},
CoreText: function (parent) {
if (!parent) {return ""}
if (parent.isEmbellished()) {return parent.CoreMO().data.join("")}
while ((parent.isa(MML.mrow) || parent.isa(MML.TeXAtom) ||
parent.isa(MML.mstyle) || parent.isa(MML.mphantom)) &&
parent.data.length === 1 && parent.data[0]) {parent = parent.data[0]}
if (!parent.isToken) {return ""} else {return parent.data.join("")}
}
});
MML.chars.Augment({
toPreviewHTML: function (span) {
var text = this.toString().replace(/[\u2061-\u2064]/g,"");
this.PHTMLhandleText(span,text);
}
});
MML.entity.Augment({
toPreviewHTML: function (span) {
var text = this.toString().replace(/[\u2061-\u2064]/g,"");
this.PHTMLhandleText(span,text);
}
});
MML.math.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span);
if (this.Get("display") === "block") {span.className += " MJXp-display"}
return span;
}
});
MML.mo.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span);
this.PHTMLadjustAccent(span);
var values = this.getValues("lspace","rspace","scriptlevel","displaystyle","largeop");
if (values.scriptlevel === 0) {
this.PHTML.l = PHTML.length2em(values.lspace);
this.PHTML.r = PHTML.length2em(values.rspace);
span.style.marginLeft = PHTML.Em(this.PHTML.l);
span.style.marginRight = PHTML.Em(this.PHTML.r);
} else {
this.PHTML.l = .15;
this.PHTML.r = .1;
}
if (values.displaystyle && values.largeop) {
var box = HTML.Element("span",{className:"MJXp-largeop"});
box.appendChild(span.firstChild); span.appendChild(box);
this.PHTML.h *= 1.2; this.PHTML.d *= 1.2;
if (this.data.join("") === "\u222B") box.className += " MJXp-int";
}
// ### FIXME: Handle embellished op spacing
// ### FIXME: Remap minus signs
return span;
},
PHTMLadjustAccent: function (span) {
var parent = this.CoreParent();
if (parent && parent.isa(MML.munderover) &&
this.CoreText(parent.data[parent.base]).length === 1) {
var over = parent.data[parent.over], under = parent.data[parent.under];
var c = this.data.join(""), C;
if (over && this === over.CoreMO() && parent.Get("accent")) {C = PHTML.REMAPACCENT[c]}
else if (under && this === under.CoreMO() && parent.Get("accentunder")) {C = PHTML.REMAPACCENTUNDER[c]}
if (C) c = span.innerHTML = C;
if (c.match(/[\u02C6-\u02DC\u00A8]/)) {this.PHTML.acc = -.52}
else if (c === "\u2192") {this.PHTML.acc = -.15; this.PHTML.vec = true}
}
},
PHTMLcanStretch: function (direction,H,D) {
if (!this.Get("stretchy")) {return false}
var c = this.data.join("");
if (c.length > 1) {return false}
c = PHTML.DELIMITERS[c];
var stretch = (c && c.dir === direction.substr(0,1));
if (stretch) {
stretch = (this.PHTML.h !== H || this.PHTML.d !== D ||
(this.Get("minsize",true) || this.Get("maxsize",true)));
}
return stretch;
},
PHTMLstretchV: function (h,d) {
var span = this.PHTMLspanElement(), bbox = this.PHTML; //bbox.w = .4; // ## adjust width
var values = this.getValues("symmetric","maxsize","minsize");
if (values.symmetric) {H = 2*Math.max(h-.25,d+.25)} else {H = h + d}
values.maxsize = PHTML.length2em(values.maxsize,bbox.h+bbox.d);
values.minsize = PHTML.length2em(values.minsize,bbox.h+bbox.d);
H = Math.max(values.minsize,Math.min(values.maxsize,H));
var scale = H/(bbox.h+bbox.d-.3); // ### adjusted for extra tall bbox
var box = HTML.Element("span",{style:{"font-size":PHTML.Em(scale)}});
if (scale > 1.25) {
var sX = Math.ceil(1.25/scale * 10);
box.className = "MJXp-right MJXp-scale"+sX;
box.style.marginLeft = PHTML.Em(bbox.w*(sX/10-1)+.07);
bbox.w *= scale*sX/10;
}
box.appendChild(span.firstChild); span.appendChild(box);
if (values.symmetric) span.style.verticalAlign = PHTML.Em(.25*(1-scale));
}
});
MML.mspace.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span);
var values = this.getValues("height","depth","width");
var w = PHTML.length2em(values.width),
h = PHTML.length2em(values.height),
d = PHTML.length2em(values.depth);
var bbox = this.PHTML;
bbox.w = w; bbox.h = h; bbox.d = d;
if (w < 0) {
// ### FIXME: lastIsInt hack
if (!PHTML.lastIsInt) span.style.marginLeft = PHTML.Em(w);
w = 0;
}
span.style.width = PHTML.Em(w);
span.style.height = PHTML.Em(h+d);
if (d) span.style.verticalAlign = PHTML.Em(-d);
return span;
}
});
MML.mpadded.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span,{
childSpans:true, className:"MJXp-box", forceChild:true
});
var child = span.firstChild;
var values = this.getValues("width","height","depth","lspace","voffset");
var dimen = this.PHTMLdimen(values.lspace);
var T = 0, B = 0, L = dimen.len, R = -dimen.len, V = 0;
if (values.width !== "") {
dimen = this.PHTMLdimen(values.width,"w",0);
if (dimen.pm) {R += dimen.len} else {span.style.width = PHTML.Em(dimen.len)}
}
if (values.height !== "") {
dimen = this.PHTMLdimen(values.height,"h",0);
if (!dimen.pm) T += -this.PHTMLbboxFor(0).h;
T += dimen.len;
}
if (values.depth !== "") {
dimen = this.PHTMLdimen(values.depth,"d",0);
if (!dimen.pm) {B += -this.PHTMLbboxFor(0).d; V += -dimen.len}
B += dimen.len;
}
if (values.voffset !== "") {
dimen = this.PHTMLdimen(values.voffset);
T -= dimen.len; B += dimen.len;
V += dimen.len;
}
if (T) child.style.marginTop = PHTML.Em(T);
if (B) child.style.marginBottom = PHTML.Em(B);
if (L) child.style.marginLeft = PHTML.Em(L);
if (R) child.style.marginRight = PHTML.Em(R);
if (V) span.style.verticalAlign = PHTML.Em(V);
return span;
},
PHTMLdimen: function (length,d,m) {
if (m == null) {m = -BIGDIMEN}
length = String(length);
var match = length.match(/width|height|depth/);
var size = (match ? this.PHTML[match[0].charAt(0)] : (d ? this.PHTML[d] : 0));
return {len: PHTML.length2em(length,size)||0, pm: !!length.match(/^[-+]/)};
}
});
MML.munderover.Augment({
toPreviewHTML: function (span) {
var values = this.getValues("displaystyle","accent","accentunder","align");
var base = this.data[this.base];
if (!values.displaystyle && base != null &&
(base.movablelimits || base.CoreMO().Get("movablelimits"))) {
span = MML.msubsup.prototype.toPreviewHTML.call(this,span);
//
// Change class to msubsup for CSS rules.
// ### FIXME: should this be handled via adding another class instead?
//
span.className = span.className.replace(/munderover/,"msubsup");
return span;
}
span = this.PHTMLdefaultSpan(span,{childSpans:true, className:"", noBBox:true});
var obox = this.PHTMLbboxFor(this.over),
ubox = this.PHTMLbboxFor(this.under),
bbox = this.PHTMLbboxFor(this.base),
BBOX = this.PHTML, acc = obox.acc;
if (this.data[this.over]) {
span.lastChild.firstChild.style.marginLeft = obox.l =
span.lastChild.firstChild.style.marginRight = obox.r = 0;
var over = HTML.Element("span",{},[["span",{className:"MJXp-over"}]]);
over.firstChild.appendChild(span.lastChild);
if (span.childNodes.length > (this.data[this.under] ? 1 : 0))
over.firstChild.appendChild(span.firstChild);
this.data[this.over].PHTMLhandleScriptlevel(over.firstChild.firstChild);
if (acc != null) {
if (obox.vec) {
over.firstChild.firstChild.firstChild.style.fontSize = "60%";
obox.h *= .6; obox.d *= .6; obox.w *= .6;
}
acc = acc - obox.d + .1; if (bbox.t != null) {acc += bbox.t - bbox.h}
over.firstChild.firstChild.style.marginBottom = PHTML.Em(acc);
}
if (span.firstChild) {span.insertBefore(over,span.firstChild)}
else {span.appendChild(over)}
}
if (this.data[this.under]) {
span.lastChild.firstChild.style.marginLeft = ubox.l =
span.lastChild.firstChild.marginRight = ubox.r = 0;
this.data[this.under].PHTMLhandleScriptlevel(span.lastChild);
}
BBOX.w = Math.max(.8*obox.w,.8*ubox.w,bbox.w);
BBOX.h = .8*(obox.h+obox.d+(acc||0)) + bbox.h;
BBOX.d = bbox.d + .8*(ubox.h+ubox.d);
return span;
}
});
MML.msubsup.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span,{noBBox:true});
if (!this.data[this.base]) {
if (span.firstChild) {span.insertBefore(HTML.Element("span"),span.firstChild)}
else {span.appendChild(HTML.Element("span"))}
}
var base = this.data[this.base], sub = this.data[this.sub], sup = this.data[this.sup];
if (!base) base = {bbox: {h:.8, d:.2}};
span.firstChild.style.marginRight = ".05em";
var h = Math.max(.4,base.PHTML.h-.4),
d = Math.max(.2,base.PHTML.d+.1);
var bbox = this.PHTML;
if (sup && sub) {
var box = HTML.Element("span",{className:"MJXp-script-box", style:{
height: PHTML.Em(h+sup.PHTML.h*.8 + d+sub.PHTML.d*.8),
"vertical-align": PHTML.Em(-d-sub.PHTML.d*.8)
}},[
["span",{},[["span",{},[["span",{
style:{"margin-bottom":PHTML.Em(-(sup.PHTML.d-.05))}
}]]]]],
["span",{},[["span",{},[["span",{
style:{"margin-top":PHTML.Em(-(sup.PHTML.h-.05))}
}]]]]]
]);
sub.PHTMLhandleScriptlevel(box.firstChild);
sup.PHTMLhandleScriptlevel(box.lastChild);
box.firstChild.firstChild.firstChild.appendChild(span.lastChild);
box.lastChild.firstChild.firstChild.appendChild(span.lastChild);
span.appendChild(box);
bbox.h = Math.max(base.PHTML.h,sup.PHTML.h*.8+h);
bbox.d = Math.max(base.PHTML.d,sub.PHTML.d*.8+d);
bbox.w = base.PHTML.w + Math.max(sup.PHTML.w,sub.PHTML.w) + .07;
} else if (sup) {
span.lastChild.style.verticalAlign = PHTML.Em(h);
sup.PHTMLhandleScriptlevel(span.lastChild);
bbox.h = Math.max(base.PHTML.h,sup.PHTML.h*.8+h);
bbox.d = Math.max(base.PHTML.d,sup.PHTML.d*.8-h);
bbox.w = base.PHTML.w + sup.PHTML.w + .07;
} else if (sub) {
span.lastChild.style.verticalAlign = PHTML.Em(-d);
sub.PHTMLhandleScriptlevel(span.lastChild);
bbox.h = Math.max(base.PHTML.h,sub.PHTML.h*.8-d);
bbox.d = Math.max(base.PHTML.d,sub.PHTML.d*.8+d);
bbox.w = base.PHTML.w + sub.PHTML.w + .07;
}
return span;
}
});
MML.mfrac.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span,{
childSpans:true, className:"MJXp-box", forceChild:true, noBBox:true
});
var values = this.getValues("linethickness","displaystyle");
if (!values.displaystyle) {
if (this.data[0]) this.data[0].PHTMLhandleScriptlevel(span.firstChild);
if (this.data[1]) this.data[1].PHTMLhandleScriptlevel(span.lastChild);
}
var denom = HTML.Element("span",{className:"MJXp-box"},[
["span",{className:"MJXp-denom"},[ // inline-table
["span",{},[["span",{className:"MJXp-rule",style:{height:"1em"}}]]],
["span"] // spans are table-row
]]
]);
denom.firstChild.lastChild.appendChild(span.lastChild);
span.appendChild(denom);
var nbox = this.PHTMLbboxFor(0), dbox = this.PHTMLbboxFor(1), bbox = this.PHTML;
bbox.w = Math.max(nbox.w,dbox.w) * .8;
bbox.h = nbox.h+nbox.d + .1 + .25;
bbox.d = dbox.h+dbox.d - .25;
bbox.l = bbox.r = .125;
values.linethickness = Math.max(0,PHTML.length2em(values.linethickness||"0",0));
if (values.linethickness) {
var rule = denom.firstChild.firstChild.firstChild;
var t = PHTML.Em(values.linethickness);
rule.style.borderTop = "none";
rule.style.borderBottom = (values.linethickness < .15 ? "1px" : t)+" solid";
rule.style.margin = t+" 0";
t = values.linethickness;
denom.style.marginTop = PHTML.Em(3*t-1.2);
span.style.verticalAlign = PHTML.Em(1.5*t + .1);
bbox.h += 1.5*t - .1; bbox.d += 1.5*t;
} else {
denom.style.marginTop = "-.7em";
}
return span;
}
});
MML.msqrt.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span,{
childSpans:true, className:"MJXp-box", forceChild:true, noBBox:true
});
this.PHTMLlayoutRoot(span,span.firstChild);
return span;
},
PHTMLlayoutRoot: function (span,base) {
var bbox = this.PHTMLbboxFor(0);
var scale = Math.ceil((bbox.h+bbox.d+.14)*100), t = PHTML.Em(14/scale);
var surd = HTML.Element("span",{className:"MJXp-surd"},[
["span",{style:{"font-size":scale+"%","margin-top":t}},["\u221A"]]
]);
var root = HTML.Element("span",{className:"MJXp-root"},[
["span",{className:"MJXp-rule",style:{"border-top":".08em solid"}}]
]);
var W = (1.2/2.2)*scale/100; // width-of-surd = (height/H-to-W-ratio)
if (scale > 150) {
var sX = Math.ceil(150/scale * 10);
surd.firstChild.className = "MJXp-right MJXp-scale"+sX;
surd.firstChild.style.marginLeft = PHTML.Em(W*(sX/10-1)/scale*100);
W = W*sX/10;
root.firstChild.style.borderTopWidth = PHTML.Em(.08/Math.sqrt(sX/10));
}
root.appendChild(base);
span.appendChild(surd);
span.appendChild(root);
this.PHTML.h = bbox.h + .18; this.PHTML.d = bbox.d;
this.PHTML.w = bbox.w + W;
return span;
}
});
MML.mroot.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span,{
childSpans:true, className:"MJXp-box", forceChild:true, noBBox:true
});
var rbox = this.PHTMLbboxFor(1), root = span.removeChild(span.lastChild);
var sqrt = this.PHTMLlayoutRoot(HTML.Element("span"),span.firstChild);
root.className = "MJXp-script"; // ### FIXME: should be scriptscript
var scale = parseInt(sqrt.firstChild.firstChild.style.fontSize);
var v = .55*(scale/120) + rbox.d*.8, r = -.6*(scale/120);
if (scale > 150) {r *= .95*Math.ceil(150/scale*10)/10}
root.style.marginRight = PHTML.Em(r); root.style.verticalAlign = PHTML.Em(v);
if (-r > rbox.w*.8) root.style.marginLeft = PHTML.Em(-r-rbox.w*.8); // ### depends on rbox.w
span.appendChild(root); span.appendChild(sqrt);
this.PHTML.w += Math.max(0,rbox.w*.8+r);
this.PHTML.h = Math.max(this.PHTML.h,rbox.h*.8+v);
return span;
},
PHTMLlayoutRoot: MML.msqrt.prototype.PHTMLlayoutRoot
});
MML.mfenced.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLcreateSpan(span);
this.PHTMLhandleStyle(span);
this.PHTMLhandleColor(span);
//
// Make row of open, data, sep, ... data, close
//
this.addFakeNodes();
this.PHTMLaddChild(span,"open",{});
for (var i = 0, m = this.data.length; i < m; i++) {
this.PHTMLaddChild(span,"sep"+i,{});
this.PHTMLaddChild(span,i,{});
}
this.PHTMLaddChild(span,"close",{});
//
// Check for streching the elements
//
var H = this.PHTML.h, D = this.PHTML.d;
this.PHTMLstretchChild("open",H,D);
for (i = 0, m = this.data.length; i < m; i++) {
this.PHTMLstretchChild("sep"+i,H,D);
this.PHTMLstretchChild(i,H,D);
}
this.PHTMLstretchChild("close",H,D);
return span;
}
});
MML.mrow.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span);
var H = this.PHTML.h, D = this.PHTML.d;
for (var i = 0, m = this.data.length; i < m; i++) this.PHTMLstretchChild(i,H,D);
return span;
}
});
MML.mstyle.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span);
this.PHTMLhandleScriptlevel(span);
return span;
}
});
MML.TeXAtom.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span);
// ### FIXME: handle TeX class?
span.className = "MJXp-mrow";
return span;
}
});
MML.mtable.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLdefaultSpan(span,{noBBox:true});
var values = this.getValues("columnalign","rowalign","columnspacing","rowspacing",
"columnwidth","equalcolumns","equalrows",
"columnlines","rowlines","frame","framespacing",
"align","width");
var SPLIT = MathJax.Hub.SplitList, i, m, j, n;
var CSPACE = SPLIT(values.columnspacing),
RSPACE = SPLIT(values.rowspacing),
CALIGN = SPLIT(values.columnalign),
RALIGN = SPLIT(values.rowalign);
for (i = 0, m = CSPACE.length; i < m; i++) {CSPACE[i] = PHTML.length2em(CSPACE[i])}
for (i = 0, m = RSPACE.length; i < m; i++) {RSPACE[i] = PHTML.length2em(RSPACE[i])}
var table = HTML.Element("span");
while (span.firstChild) table.appendChild(span.firstChild);
span.appendChild(table);
var H = 0, W = 0;
for (i = 0, m = this.data.length; i < m; i++) {
var row = this.data[i];
if (row) {
var rspace = PHTML.arrayEntry(RSPACE,i-1), ralign = PHTML.arrayEntry(RALIGN,i);
var rbox = row.PHTML, rspan = row.PHTMLspanElement();
rspan.style.verticalAlign = ralign;
var k = (row.type === "mlabeledtr" ? 1 : 0);
for (j = 0, n = row.data.length; j < n-k; j++) {
var cell = row.data[j+k];
if (cell) {
var cspace = PHTML.arrayEntry(CSPACE,j-1), calign = PHTML.arrayEntry(CALIGN,j);
var cspan = cell.PHTMLspanElement();
if (j) {rbox.w += cspace; cspan.style.paddingLeft = PHTML.Em(cspace)}
if (i) cspan.style.paddingTop = PHTML.Em(rspace);
cspan.style.textAlign = calign;
}
}
H += rbox.h + rbox.d; if (i) {H += rspace}
if (rbox.w > W) W = rbox.w;
}
}
var bbox = this.PHTML;
bbox.w = W; bbox.h = H/2 + .25; bbox.d = H/2 - .25;
bbox.l = bbox.r = .125;
return span;
}
});
MML.mlabeledtr.Augment({
PHTMLdefaultSpan: function (span,options) {
if (!options) options = {};
span = this.PHTMLcreateSpan(span);
this.PHTMLhandleStyle(span);
this.PHTMLhandleColor(span);
if (this.isToken) this.PHTMLhandleToken(span);
// skip label for now
for (var i = 1, m = this.data.length; i < m; i++) this.PHTMLaddChild(span,i,options);
return span;
}
});
MML.semantics.Augment({
toPreviewHTML: function (span) {
span = this.PHTMLcreateSpan(span);
if (this.data[0]) {
this.data[0].toPreviewHTML(span);
MathJax.Hub.Insert(this.data[0].PHTML||{},this.PHTML);
}
return span;
}
});
MML.annotation.Augment({toPreviewHTML: function(span) {}});
MML["annotation-xml"].Augment({toPreviewHTML: function(span) {}});
//
// Loading isn't complete until the element jax is modified,
// but can't call loadComplete within the callback for "mml Jax Ready"
// (it would call PreviewHTML's Require routine, asking for the mml jax again)
// so wait until after the mml jax has finished processing.
//
// We also need to wait for the onload handler to run, since the loadComplete
// will call Config and Startup, which need to modify the body.
//
MathJax.Hub.Register.StartupHook("onLoad",function () {
setTimeout(MathJax.Callback(["loadComplete",PHTML,"jax.js"]),0);
});
});
MathJax.Hub.Register.StartupHook("End Cookie", function () {
if (HUB.config.menuSettings.zoom !== "None")
{AJAX.Require("[MathJax]/extensions/MathZoom.js")}
});
})(MathJax.Ajax,MathJax.Hub,MathJax.HTML,MathJax.OutputJax.PreviewHTML);