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Fix some crashes when elements are missing their children.

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This commit is contained in:
Davide P. Cervone 2013-05-01 13:21:10 -04:00
parent 6f679216e2
commit 4f40c0eed6
1 changed files with 7 additions and 2 deletions
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9
unpacked/jax/output/SVG/jax.js
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@ -1013,8 +1013,13 @@
return svg;
},
SVGchildSVG: function (i) {
return (this.data[i] ? this.data[i].toSVG() : BBOX());
},
SVGdataStretched: function (i,HW,D) {
this.SVGdata = {HW:HW, D:D};
if (!this.data[i]) {return BBOX()}
if (D != null) {return this.data[i].SVGstretchV(HW,D)}
if (HW != null) {return this.data[i].SVGstretchH(HW)}
return this.data[i].toSVG();
@ -1599,7 +1604,7 @@
toSVG: function () {
this.SVGgetStyles();
var svg = this.SVG(); this.SVGhandleSpace(svg);
var num = this.data[0].toSVG(), den = this.data[1].toSVG();
var num = this.SVGchildSVG(0), den = this.SVGchildSVG(1);
var values = this.getValues("displaystyle","linethickness","numalign","denomalign","bevelled");
var scale = svg.scale = this.SVGgetScale(), isDisplay = values.displaystyle;
var a = SVG.TeX.axis_height * scale;
@ -1649,7 +1654,7 @@
toSVG: function () {
this.SVGgetStyles();
var svg = this.SVG(); this.SVGhandleSpace(svg);
var base = this.data[0].toSVG(), rule, surd;
var base = this.SVGchildSVG(0), rule, surd;
var scale = this.SVGgetScale();
var t = SVG.TeX.rule_thickness * scale, p,q, H, x = 0;
if (this.Get("displaystyle")) {p = SVG.TeX.x_height * scale} else {p = t}