20 lines
14 KiB
JavaScript
20 lines
14 KiB
JavaScript
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/*
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* /MathJax/jax/output/CommonHTML/autoload/multiline.js
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*
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* Copyright (c) 2009-2018 The MathJax Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function(){var e="2.7.5";var b=MathJax.ElementJax.mml,a=MathJax.Hub.config,c=MathJax.OutputJax.CommonHTML;var g=b.mo().With({CHTML:c.BBOX.empty()});var f={newline:0,nobreak:1000000,goodbreak:[-200],badbreak:[+200],auto:[0],maxwidth:1.33,toobig:800,nestfactor:400,spacefactor:-100,spaceoffset:2,spacelimit:1,fence:500,close:500};var d={linebreakstyle:"after"};b.mbase.Augment({CHTMLlinebreakPenalty:f,CHTMLmultiline:function(k){var q=this;while(q.inferred||(q.parent&&q.parent.type==="mrow"&&q.parent.isEmbellished())){q=q.parent}var o=((q.type==="math"&&q.Get("display")==="block")||q.type==="mtd");q.isMultiline=true;var r=this.getValues("linebreak","linebreakstyle","lineleading","linebreakmultchar","indentalign","indentshift","indentalignfirst","indentshiftfirst","indentalignlast","indentshiftlast");if(r.linebreakstyle===b.LINEBREAKSTYLE.INFIXLINEBREAKSTYLE){r.linebreakstyle=this.Get("infixlinebreakstyle")}r.lineleading=this.CHTMLlength2em(r.lineleading,0.5);c.BBOX.empty(this.CHTML);var p=c.addElement(k,"mjx-stack");var h={BBOX:this.CHTML,n:0,Y:0,scale:(this.CHTML.scale||1),isTop:o,values:{},VALUES:r},n=this.CHTMLgetAlign(h,{}),j=this.CHTMLgetShift(h,{},n),i=[],l={index:[],penalty:f.nobreak,w:0,W:j,shift:j,scanW:j,nest:0},m=false;while(this.CHTMLbetterBreak(l,h,true)&&(l.scanW>=c.linebreakWidth||l.penalty===f.newline)){this.CHTMLaddLine(p,i,l.index,h,l.values,m);i=l.index.slice(0);m=true;n=this.CHTMLgetAlign(h,l.values);j=this.CHTMLgetShift(h,l.values,n);l.W=l.shift=l.scanW=j;l.penalty=f.nobreak}h.isLast=true;this.CHTMLaddLine(p,i,[],h,d,m);k.style.width=p.style.width=this.CHTML.pwidth="100%";this.CHTML.mwidth=c.Em(this.CHTML.w);this.CHTML.isMultiline=q.CHTML.isMultiline=true;p.style.verticalAlign=c.Em(h.d-this.CHTML.d);return k},CHTMLbetterBreak:function(l,h,s){if(this.isToken){return false}if(this.isEmbellished()){l.embellished=this;return this.CoreMO().CHTMLbetterBreak(l,h)}if(this.linebreakContainer){return false}var r=l.index.slice(0),p=l.index.shift(),o=this.data.length,n,t,k,q=(l.index.length>0),j=false;if(p==null){p=-1}if(!q){p++;l.W+=l.w;l.w=0}k=l.scanW=l.W;l.nest++;while(p<o&&(l.scanW<f.maxwidth*c.linebreakWidth||l.w===0)){if(this.data[p]){if(this.data[p].CHTMLbetterBreak(l,h)){j=true;r=[p].concat(l.index);n=l.W;t=l.w;if(l.penalty===f.newline){l.index=r;if(l.nest){l.nest--}return true}}k=(q?l.scanW:this.CHTMLaddWidth(p,l,k))}l.index=[];p++;q=false}if(s&&j){g.parent=this.parent;g.inherit=this.inherit;if(g.CHTMLbetterBreak(l,h)){j=false;r=l.index}}if(l.nest){l.nest--}l.index=r;if(j){l.W=n;l.w=t}return j},CHTMLaddWidth:function(h,k,j){if(this.data[h]){var l=this.data[h].CHTML;j+=(l.w+(l.L||0)+(l.R||0))*(l.scale||1);k.W=k.scanW=j;k.w=0}return j},CHTMLaddLine:function(s,j,o,h,t,q){var n=c.addElement(s,"mjx-block",{},[["mjx-box"]]),v=n.firstChild;var u=h.bbox=c.BBOX.empty();h.first=q;h.last=true;this.CHTMLmoveLine(j,o,v,h,t);u.clean();var r=this.CHTMLgetAlign(h,t),k=this.CHTMLgetShift(h,t,r,true);var m=0;if(h.n>0){var p=c.FONTDATA.baselineskip;var l=(h.values.lineleading==null?h.VALUES:h.values).lineleading*h.scale;var i=h.Y;h.Y-=Math.max(p,h.d+u.h+l);m=i-h.Y-h.d-u.h}if(k){v.style.margin="0 "+c.Em(-k)+" 0 "+c.Em(k)}if(r!==b.INDENTALIGN.LEFT){n.style.textAlign=r}if(m){n.style.paddingTop=c.Em(m)}h.BBOX.combine(u,k,h.Y);h.d=h.bbox.d;h.values=t;h.n++},CHTMLgetAlign:function(k,h){var l=h,i=k.values,j=k.VALUES,m;if(k.n===0){m=l.indentalignfirst||i.indentalignfirst||j.indentalignfirst}else{if(k.isLast){m=i.indentalignlast||j.indentalignlast}else{m=i.indentalign||j.indentalign}}if(m===b.INDENTALIGN.INDENTALIGN){m=i.indentalign||j.indentalign}if(m===b.INDENTALIGN.AUTO){m=(k.isTop?a.displayAlign:b.INDENTALIGN.LEFT)}return m},CHTMLgetShift:function(h,p,n,l){var o=p,m=h.values,i=h.VALUES,j;if(h.n===0){j=o.indentshiftfirst||m.indentshiftfirst||i.indentshiftfirst}else{if(h.isLast){j=m.indentshiftlast||i.indentshiftlast}else{j=m.indentshift||i.indentshift}}if(j===b.INDENTSHIFT.INDENTSHIFT){j=m.indentshift||i.indentshift}if(j==="auto"||j===""){j="0"}j=this.CHTMLlength2em(j,c.cwidth)
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