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Add bevelled fraction support

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This commit is contained in:
Davide P. Cervone 2015-03-14 18:40:58 -04:00
parent 35bd8e0acd
commit beabbc7a17
1 changed files with 46 additions and 27 deletions
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19
unpacked/jax/output/CommonHTML/jax.js
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@ -57,6 +57,7 @@
"mjx-numerator": {display:"block", "text-align":"center"},
"mjx-denominator": {display:"block", "text-align":"center"},
".MJXc-fpad": {"padding-left":".1em", "padding-right":".1em"},
".MJXc-bevelled > *": {display:"inline-block"},
"mjx-stack": {display:"inline-block"},
"mjx-op": {display:"block"},
@ -1754,6 +1755,23 @@
values.linethickness = Math.max(0,CHTML.length2em(values.linethickness||"0",0));
var mt = CHTML.TEX.min_rule_thickness/CHTML.em/scale, a = CHTML.TEX.axis_height;
var t = values.linethickness, p,q, u,v;
if (values.bevelled) {
frac.className = "MJXc-bevelled";
var delta = (isDisplay ? .4 : .15);
var H = sscale*Math.max(nbox.h+nbox.d,dbox.h+dbox.d) + 2*delta;
var bevel = HTML.Element("mjx-bevel"); frac.insertBefore(bevel,denom);
var bbox = CHTML.createDelimiter(bevel,0x2F,H);
u = sscale*(nbox.d-nbox.h)/2+a+delta;
v = sscale*(dbox.d-dbox.h)/2+a-delta;
if (u) num.style.verticalAlign = CHTML.Em(u);
if (v) denom.style.verticalAlign = CHTML.Em(v);
bevel.style.marginLeft = bevel.style.marginRight = CHTML.Em(-delta/2);
this.CHTML = CHTML.emptyBBox();
CHTML.combineBBoxes(this.CHTML,nbox,0,u,sscale);
CHTML.combineBBoxes(this.CHTML,bbox,sscale*nbox.w-delta/2,0,sscale);
CHTML.combineBBoxes(this.CHTML,dbox,sscale*nbox.w+bbox.w-delta,v,sscale);
CHTML.cleanBBox(this.CHTML);
} else {
if (isDisplay) {u = CHTML.TEX.num1; v = CHTML.TEX.denom1}
else {u = (t === 0 ? CHTML.TEX.num3 : CHTML.TEX.num2); v = CHTML.TEX.denom2}
if (t === 0) { // \atop
@ -1781,6 +1799,7 @@
u -= sscale*nbox.d + a + t/2; v -= sscale*dbox.h - a + t/2;
if (u > 0) num.style.paddingBottom = CHTML.Em(u);
if (v > 0) denom.style.paddingTop = CHTML.Em(v);
}
//
// Add nulldelimiterspace around the fraction
// (TeXBook pg 150 and Appendix G rule 15e)