// @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/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) 2013-2020 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. */ (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, .MJXp-munder": {"display":"inline-table!important"}, ".MJXp-over": {"display":"inline-block!important","text-align":"center"}, ".MJXp-over > *": {"display":"block!important"}, ".MJXp-munderover > *, .MJXp-munder > *": {"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_Process(ing|ed))?$/)) {prev.parentNode.removeChild(prev)} // // Add the span, and a div if in display mode, // then 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: HUB.getTabOrder(jax) }); 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.match(/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]) { if (span.lastChild.firstChild){ 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]) { if (span.lastChild.firstChild) { 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); // @license-end