1/* 2 * /MathJax-v2/jax/output/SVG/autoload/multiline.js 3 * 4 * Copyright (c) 2009-2018 The MathJax Consortium 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19MathJax.Hub.Register.StartupHook("SVG Jax Ready",function(){var d="2.7.9";var a=MathJax.ElementJax.mml,g=MathJax.OutputJax.SVG,b=g.BBOX;var f=a.mo().With({SVGdata:{w:0,x:0}});var e={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 c={linebreakstyle:"after"};a.mrow.Augment({SVGmultiline:function(l){var p=this;while(p.inferred||(p.parent&&p.parent.type==="mrow"&&p.isEmbellished())){p=p.parent}var o=((p.type==="math"&&p.Get("display")==="block")||p.type==="mtd");p.isMultiline=true;var q=this.getValues("linebreak","linebreakstyle","lineleading","linebreakmultchar","indentalign","indentshift","indentalignfirst","indentshiftfirst","indentalignlast","indentshiftlast");if(q.linebreakstyle===a.LINEBREAKSTYLE.INFIXLINEBREAKSTYLE){q.linebreakstyle=this.Get("infixlinebreakstyle")}q.lineleading=g.length2em(q.lineleading,1,0.5);l=this.SVG();if(p.type==="math"){if(g.linebreakWidth<g.BIGDIMEN){l.w=g.linebreakWidth}else{l.w=g.cwidth}}var h={n:0,Y:0,scale:this.scale||1,isTop:o,values:{},VALUES:q},n=this.SVGgetAlign(h,{}),j=this.SVGgetShift(h,{},n),i=[],k={index:[],penalty:e.nobreak,w:0,W:j,shift:j,scanW:j,nest:0},m=false;while(this.SVGbetterBreak(k,h,true)&&(k.scanW>=g.linebreakWidth||k.penalty===e.newline)){this.SVGaddLine(l,i,k.index,h,k.values,m);i=k.index.slice(0);m=true;n=this.SVGgetAlign(h,k.values);j=this.SVGgetShift(h,k.values,n);if(n===a.INDENTALIGN.CENTER){j=0}k.W=k.shift=k.scanW=j;k.penalty=e.nobreak}h.isLast=true;this.SVGaddLine(l,i,[],h,c,m);this.SVGhandleSpace(l);this.SVGhandleColor(l);l.isMultiline=true;this.SVGsaveData(l);return l}});a.mbase.Augment({SVGlinebreakPenalty:e,SVGbetterBreak:function(l,h,s){if(this.isToken){return false}if(this.isEmbellished()){l.embellished=this;return this.CoreMO().SVGbetterBreak(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<e.maxwidth*g.linebreakWidth||l.w===0)){if(this.data[p]){if(this.data[p].SVGbetterBreak(l,h)){j=true;r=[p].concat(l.index);n=l.W;t=l.w;if(l.penalty===e.newline){l.index=r;if(l.nest){l.nest--}return true}}k=(q?l.scanW:this.SVGaddWidth(p,l,k))}l.index=[];p++;q=false}if(s&&j){f.parent=this.parent;f.inherit=this.inherit;if(f.SVGbetterBreak(l,h)){j=false;r=l.index}}if(l.nest){l.nest--}l.index=r;if(j){l.W=n}return j},SVGaddWidth:function(j,l,k){if(this.data[j]){var h=this.data[j].SVGdata;k+=h.w+h.x;if(h.X){k+=h.X}l.W=l.scanW=k;l.w=0}return k},SVGaddLine:function(m,i,l,h,q,o){var r=b();h.first=o;h.last=true;this.SVGmoveLine(i,l,r,h,q);r.Clean();var p=this.SVGgetAlign(h,q),j=this.SVGgetShift(h,q,p);if(h.n>0){var n=g.FONTDATA.baselineskip*h.scale;var k=(h.values.lineleading==null?h.VALUES:h.values).lineleading*h.scale;h.Y-=Math.max(n,h.d+r.h+k)}if(r.w+j>m.w){m.w=r.w+j}m.Align(r,p,0,h.Y,j);h.d=r.d;h.values=q;h.n++},SVGgetAlign: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===a.INDENTALIGN.INDENTALIGN){m=i.indentalign||j.indentalign}if(m===a.INDENTALIGN.AUTO){m=(k.isTop?this.displayAlign:a.INDENTALIGN.LEFT)}return m},SVGgetShift:function(m,j,o){var n=j,k=m.values,l=m.VALUES,i;if(m.n===0){i=n.indentshiftfirst||k.indentshiftfirst||l.indentshiftfirst}else{if(m.isLast){i=k.indentshiftlast||l.indentshiftlast}else{i=k.indentshift||l.indentshift}}if(i===a.INDENTSHIFT.INDENTSHIFT){i=k.indentshift||l.indentshift}if(i==="auto"||i===""){i="0"}i=g.length2em(i,1,g.cwidth);if(m.isTop&&this.displayIndent!=="0"){var h=g.length2em(this.displayIndent,1,g.cwidth);i+=(o===a.INDENTALIGN.RIGHT?-h:h)}return i},SVGmoveLine:function(q,h,l,p,k){var n=q[0],m=h[0];if(n==null){n=-1}if(m==null){m=this.data.length-1}if(n===m&&q.length>1){this.data[n].SVGmoveSlice(q.slice(1),h.slice(1),l,p,k,"paddingLeft")}else{var o=p.last;p.last=false;while(n<m){if(this.data[n]){if(q.length<=1){this.data[n].SVGmove(l,p,k)}else{this.data[n].SVGmoveSlice(q.slice(1),[],l,p,k,"paddingLeft")}}n++;p.first=false;q=[]}p.last=o;if(this.data[n]){if(h.length<=1){this.data[n].SVGmove(l,p,k)}else{this.data[n].SVGmoveSlice([],h.slice(1),l,p,k,"paddingRight")}}}},SVGmoveSlice:function(n,h,j,k,i,l){var m=b();this.SVGmoveLine(n,h,m,k,i);m.Clean();if(this.href){this.SVGaddHref(m)}this.SVGhandleColor(m);if(n.length==0){this.SVGhandleSpace(m)}j.Add(m,j.w,0,true);return m},SVGmove:function(h,k,j){if(!(k.first||k.last)||(k.first&&k.values.linebreakstyle===a.LINEBREAKSTYLE.BEFORE)||(k.last&&j.linebreakstyle===a.LINEBREAKSTYLE.AFTER)){var i=this.toSVG(this.SVGdata.HW,this.SVGdata.D);if(k.first||k.nextIsFirst){i.x=0}if(k.last&&i.X){i.X=0}h.Add(i,h.w,0,true)}if(k.first&&i&&i.w===0){k.nextIsFirst=true}else{delete k.nextIsFirst}}});a.mfenced.Augment({SVGbetterBreak:function(n,h){var v=n.index.slice(0),t=n.index.shift(),q=this.data.length,p,x,o,u=(n.index.length>0),l=false;if(t==null){t=-1}if(!u){t++;n.W+=n.w;n.w=0}o=n.scanW=n.W;n.nest++;if(!this.dataI){this.dataI=[];if(this.data.open){this.dataI.push("open")}if(q){this.dataI.push(0)}for(var s=1;s<q;s++){if(this.data["sep"+s]){this.dataI.push("sep"+s)}this.dataI.push(s)}if(this.data.close){this.dataI.push("close")}}q=this.dataI.length;while(t<q&&(n.scanW<e.maxwidth*g.linebreakWidth||n.w===0)){var r=this.dataI[t];if(this.data[r]){if(this.data[r].SVGbetterBreak(n,h)){l=true;v=[t].concat(n.index);p=n.W;x=n.w;if(n.penalty===e.newline){n.index=v;if(n.nest){n.nest--}return true}}o=(u?n.scanW:this.SVGaddWidth(t,n,o))}n.index=[];t++;u=false}if(n.nest){n.nest--}n.index=v;if(l){n.W=p;n.w=x}return l},SVGmoveLine:function(l,n,q,h,s){var p=l[0],o=n[0];if(p==null){p=-1}if(o==null){o=this.dataI.length-1}if(p===o&&l.length>1){this.data[this.dataI[p]].SVGmoveSlice(l.slice(1),n.slice(1),q,h,s,"paddingLeft")}else{var r=h.last;h.last=false;var m=this.dataI[p];while(p<o){if(this.data[m]){if(l.length<=1){this.data[m].SVGmove(q,h,s)}else{this.data[m].SVGmoveSlice(l.slice(1),[],q,h,s,"paddingLeft")}}p++;m=this.dataI[p];h.first=false;l=[]}h.last=r;if(this.data[m]){if(n.length<=1){this.data[m].SVGmove(q,h,s)}else{this.data[m].SVGmoveSlice([],n.slice(1),q,h,s,"paddingRight")}}}}});a.msubsup.Augment({SVGbetterBreak:function(k,h){if(!this.data[this.base]){return false}var p=k.index.slice(0),n=k.index.shift(),m,q,l,o=(k.index.length>0),j=false;if(!o){k.W+=k.w;k.w=0}l=k.scanW=k.W;if(n==null){this.SVGdata.dw=this.SVGdata.w-this.data[this.base].SVGdata.w}if(this.data[this.base].SVGbetterBreak(k,h)){j=true;p=[this.base].concat(k.index);m=k.W;q=k.w;if(k.penalty===e.newline){j=o=true}}if(!o){this.SVGaddWidth(this.base,k,l)}k.scanW+=this.SVGdata.dw;k.W=k.scanW;k.index=[];if(j){k.W=m;k.w=q;k.index=p}return j},SVGmoveLine:function(j,l,o,i,q){if(this.data[this.base]){if(j.length>1){this.data[this.base].SVGmoveSlice(j.slice(1),l.slice(1),o,i,q,"paddingLeft")}else{if(l.length<=1){this.data[this.base].SVGmove(o,i,q)}else{this.data[this.base].SVGmoveSlice([],l.slice(1),o,i,q,"paddingRight")}}}if(l.length===0){var n=this.data[this.sup],h=this.data[this.sub],p=o.w,m;var k=(this.data[this.base].SVGdata||{}).ic||0;if(n){m=n.SVGdata||{};o.Add(n.toSVG(),p+(m.dx||0)-k,m.dy)}if(h){m=h.SVGdata||{};o.Add(h.toSVG(),p+(m.dx||0)-k,m.dy)}}}});a.mmultiscripts.Augment({SVGbetterBreak:function(k,i){if(!this.data[this.base]){return false}var o=k.index.slice(0);k.index.shift();var m,p,l,n=(k.index.length>0),j=false;if(!n){k.W+=k.w;k.w=0}k.scanW=k.W;var h=this.SVGdata.w-this.data[this.base].SVGdata.w-this.SVGdata.dx;k.scanW+=this.SVGdata.dx;l=k.scanW;if(this.data[this.base].SVGbetterBreak(k,i)){j=true;o=[this.base].concat(k.index);m=k.W;p=k.w;if(k.penalty===e.newline){j=n=true}}if(!n){this.SVGaddWidth(this.base,k,l)}k.scanW+=h;k.W=k.scanW;k.index=[];if(j){k.W=m;k.w=p;k.index=o}return j},SVGmoveLine:function(j,l,o,i,q){var r,n=this.SVGdata;if(j.length<1){this.scriptBox=this.SVGgetScripts(this.SVGdata.s);var k=this.scriptBox[2],p=this.scriptBox[3];r=o.w+n.dx;if(p){o.Add(p,r+n.delta-p.w,n.u)}if(k){o.Add(k,r-k.w,-n.v)}}if(this.data[this.base]){if(j.length>1){this.data[this.base].SVGmoveSlice(j.slice(1),l.slice(1),o,i,q,"paddingLeft")}else{if(l.length<=1){this.data[this.base].SVGmove(o,i,q)}else{this.data[this.base].SVGmoveSlice([],l.slice(1),o,i,q,"paddingRight")}}}if(l.length===0){var h=this.scriptBox[0],m=this.scriptBox[1];r=o.w+n.s;if(m){o.Add(m,r,n.u)}if(h){o.Add(h,r-n.delta,-n.v)}delete this.scriptBox}}});a.mo.Augment({SVGbetterBreak:function(j,h){if(j.values&&j.values.last===this){return false}var r=this.getValues("linebreak","linebreakstyle","lineleading","linebreakmultchar","indentalign","indentshift","indentalignfirst","indentshiftfirst","indentalignlast","indentshiftlast","texClass","fence");if(r.linebreakstyle===a.LINEBREAKSTYLE.INFIXLINEBREAKSTYLE){r.linebreakstyle=this.Get("infixlinebreakstyle")}if(r.texClass===a.TEXCLASS.OPEN){j.nest++}if(r.texClass===a.TEXCLASS.CLOSE&&j.nest){j.nest--}var k=j.scanW,l=j.embellished;delete j.embellished;if(!l||!l.SVGdata){l=this}var n=l.SVGdata,q=n.w+n.x;if(r.linebreakstyle===a.LINEBREAKSTYLE.AFTER){k+=q;q=0}if(k-j.shift===0&&r.linebreak!==a.LINEBREAK.NEWLINE){return false}var m=g.linebreakWidth-k;if(h.n===0&&(r.indentshiftfirst!==h.VALUES.indentshiftfirst||r.indentalignfirst!==h.VALUES.indentalignfirst)){var o=this.SVGgetAlign(h,r),i=this.SVGgetShift(h,r,o);m+=(j.shift-i)}var p=Math.floor(m/g.linebreakWidth*1000);if(p<0){p=e.toobig-3*p}if(r.fence){p+=e.fence}if((r.linebreakstyle===a.LINEBREAKSTYLE.AFTER&&r.texClass===a.TEXCLASS.OPEN)||r.texClass===a.TEXCLASS.CLOSE){p+=e.close}p+=j.nest*e.nestfactor;var s=e[r.linebreak||a.LINEBREAK.AUTO]||0;if(!MathJax.Object.isArray(s)){if(s||m>=0){p=s*j.nest}}else{p=Math.max(1,p+s[0]*j.nest)}if(p>=j.penalty){return false}j.penalty=p;j.values=r;j.W=k;j.w=q;r.lineleading=g.length2em(r.lineleading,1,h.VALUES.lineleading);r.last=this;return true}});a.mspace.Augment({SVGbetterBreak:function(i,h){if(i.values&&i.values.last===this){return false}var p=this.getValues("linebreak");var n=p.linebreak;if(!n||this.hasDimAttr()){n=a.LINEBREAK.AUTO}var j=i.scanW,l=this.SVGdata,o=l.w+l.x;if(j-i.shift===0){return false}var k=g.linebreakWidth-j;var m=Math.floor(k/g.linebreakWidth*1000);if(m<0){m=e.toobig-3*m}m+=i.nest*e.nestfactor;var q=e[n]||0;if(n===a.LINEBREAK.AUTO&&o>=e.spacelimit*1000&&!this.mathbackground&&!this.backrgound){q=[(o/1000+e.spaceoffset)*e.spacefactor]}if(!MathJax.Object.isArray(q)){if(q||k>=0){m=q*i.nest}}else{m=Math.max(1,m+q[0]*i.nest)}if(m>=i.penalty){return false}i.penalty=m;i.values=p;i.W=j;i.w=o;p.lineleading=h.VALUES.lineleading;p.linebreakstyle="before";p.last=this;return true}});MathJax.Hub.Register.StartupHook("TeX mathchoice Ready",function(){a.TeXmathchoice.Augment({SVGbetterBreak:function(i,h){return this.Core().SVGbetterBreak(i,h)},SVGmoveLine:function(l,h,j,k,i){return this.Core().SVGmoveSlice(l,h,j,k,i)}})});a.maction.Augment({SVGbetterBreak:function(i,h){return this.Core().SVGbetterBreak(i,h)},SVGmoveLine:function(l,h,j,k,i){return this.Core().SVGmoveSlice(l,h,j,k,i)},});a.semantics.Augment({SVGbetterBreak:function(i,h){return(this.data[0]?this.data[0].SVGbetterBreak(i,h):false)},SVGmoveLine:function(l,h,j,k,i){return(this.data[0]?this.data[0].SVGmoveSlice(l,h,j,k,i):null)}});MathJax.Hub.Startup.signal.Post("SVG multiline Ready");MathJax.Ajax.loadComplete(g.autoloadDir+"/multiline.js")}); 20