20 lines
10 KiB
JavaScript
20 lines
10 KiB
JavaScript
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/*
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* /MathJax/jax/output/SVG/autoload/multiline.js
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*
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* Copyright (c) 2009-2013 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("SVG Jax Ready",function(){var d="2.3";var a=MathJax.ElementJax.mml,f=MathJax.OutputJax.SVG,b=f.BBOX;var e={newline:0,nobreak:1000000,goodbreak:[-200],badbreak:[+200],auto:[0],toobig:800,nestfactor:400,spacefactor:-100,spaceoffset:2,spacelimit:1,fence:500,close:500};var c={linebreakstyle:"after"};a.mrow.Augment({SVGmultiline:function(k){var o=this;while(o.inferred||(o.parent&&o.parent.type==="mrow"&&o.parent.data.length===1)){o=o.parent}var n=((o.type==="math"&&o.Get("display")==="block")||o.type==="mtd");o.isMultiline=true;var p=this.getValues("linebreak","linebreakstyle","lineleading","linebreakmultchar","indentalign","indentshift","indentalignfirst","indentshiftfirst","indentalignlast","indentshiftlast");if(p.linebreakstyle===a.LINEBREAKSTYLE.INFIXLINEBREAKSTYLE){p.linebreakstyle=this.Get("infixlinebreakstyle")}p.lineleading=f.length2em(p.lineleading,1,0.5);k=this.SVG();if(f.linebreakWidth<f.BIGDIMEN){k.w=f.linebreakWidth}else{k.w=f.cwidth/f.em*1000}var g={n:0,Y:0,scale:this.SVGgetScale(),isTop:n,values:{},VALUES:p},m=this.SVGgetAlign(g,{}),i=this.SVGgetShift(g,{},m),h=[],j={index:[],penalty:e.nobreak,w:0,W:i,shift:i,scanW:i,nest:0},l=false;while(this.SVGbetterBreak(j,g)&&(j.scanW>=f.linebreakWidth||j.penalty==e.newline)){this.SVGaddLine(k,h,j.index,g,j.values,l);h=j.index.slice(0);l=true;m=this.SVGgetAlign(g,j.values);i=this.SVGgetShift(g,j.values,m);if(m===a.INDENTALIGN.CENTER){i=0}j.W=j.shift=j.scanW=i;j.penalty=e.nobreak}g.isLast=true;this.SVGaddLine(k,h,[],g,c,l);this.SVGhandleSpace(k);this.SVGhandleColor(k);k.isMultiline=true;this.SVGsaveData(k);return k}});a.mbase.Augment({SVGlinebreakPenalty:e,SVGbetterBreak:function(j,g){if(this.isToken){return false}if(this.isEmbellished()){j.embellished=this;return this.CoreMO().SVGbetterBreak(j,g)}if(this.linebreakContainer){return false}var q=j.index.slice(0),o=j.index.shift(),n=this.data.length,l,r,k,p=(j.index.length>0),h=false;if(o==null){o=-1}if(!p){o++;j.W+=j.w;j.w=0}k=j.scanW=j.W;j.nest++;while(o<n&&j.scanW<1.33*f.linebreakWidth){if(this.data[o]){if(this.data[o].SVGbetterBreak(j,g)){h=true;q=[o].concat(j.index);l=j.W;r=j.w;if(j.penalty===e.newline){j.index=q;if(j.nest){j.nest--}return true}}k=(p?j.scanW:this.SVGaddWidth(o,j,k))}j.index=[];o++;p=false}if(j.nest){j.nest--}j.index=q;if(h){j.W=l}return h},SVGaddWidth:function(h,k,j){if(this.data[h]){var g=this.data[h].SVGdata;j+=g.w+g.x;if(g.X){j+=g.X}k.W=k.scanW=j;k.w=0}return j},SVGaddLine:function(l,h,k,g,p,n){var q=b();g.first=n;g.last=true;this.SVGmoveLine(h,k,q,g,p);q.Clean();var o=this.SVGgetAlign(g,p),i=this.SVGgetShift(g,p,o);if(i){if(o===a.INDENTALIGN.LEFT){q.x=i}else{if(o===a.INDENTALIGN.RIGHT){q.w+=i;q.r=q.w}}}if(g.n>0){var m=f.FONTDATA.baselineskip*g.scale;var j=(g.values.lineleading==null?g.VALUES:g.values).lineleading;g.Y-=Math.max(m,g.d+q.h+j)}l.Align(q,o,0,g.Y);g.d=q.d;g.values=p;g.n++},SVGgetAlign:function(j,g){var k=g,h=j.values,i=j.VALUES,l;if(j.n===0){l=k.indentalignfirst||h.indentalignfirst||i.indentalignfirst}else{if(j.isLast){l=h.indentalignlast||i.indentalignlast}else{l=h.indentalign||i.indentalign}}if(l===a.INDENTALIGN.INDENTALIGN){l=h.indentalign||i.indentalign}if(l===a.INDENTALIGN.AUTO){l=(j.isTop?this.displayAlign:a.INDENTALIGN.LEFT)}return l},SVGgetShift:function(k,h,m){if(m===a.INDENTALIGN.CENTER){return 0}var l=h,i=k.values,j=k.VALUES,g;if(k.n===0){g=l.indentshiftfirst||i.indentshiftfirst||j.indentshiftfirst}else{if(k.isLast){g=i.indentshiftlast||j.indentshiftlast}else{g=i.indentshift||j.indentshift}}if(g===a.INDENTSHIFT.INDENTSHIFT){g=i.indentshift||j.indentshift}if(g==="auto"||g===""){g=(k.isTSop?this.displayIndent:"0")}return f.length2em(g,0)},SVGmoveLine:function(p,g,k,o,h){var m=p[0],l=g[0];if(m==null){m=-1}if(l==null){l=this.data.length-1}if(m===l&&p.length>1){this.data[m].SVGmoveSlice(p.slice(1),g.slice(1),k,o,h,"paddingLeft")}else{var n=o.last;o.last=false;while(m<l){if(this.data[m]){if(p.length<=1){this.data[m].SVGmove(k,o,h)}else{this.data[m].SVGmoveSlice(p.slice(1),[],k,o,h,"paddingLeft")}}m++;o.first=false;p=[]}o.last=n;if(this.data[m]){if(g.l
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