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Make CHTML mglyph scale image size by hand rather than using offsetWidth and offsetHeight, since those cause reflow. This also makes it work in mathjax-node. Resolves mathjax/Mathjax-node#241.

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This commit is contained in:
Davide P. Cervone 2016-06-07 12:43:09 -04:00
parent 8c51621661
commit ae4f60f2df
1 changed files with 8 additions and 8 deletions
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16
unpacked/jax/output/CommonHTML/autoload/mglyph.js
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@ -60,15 +60,15 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
var img = CHTML.addElement(node,"img",{
isMathJax:true, src:values.src, alt:values.alt, title:values.alt
});
var w = bbox.img.img.width/CHTML.em, h = bbox.img.img.height/CHTML.em;
if (values.width !== "") img.style.width = CHTML.Em(this.CHTMLlength2em(values.width,w));
if (values.height !== "") img.style.height = CHTML.Em(this.CHTMLlength2em(values.height,h));
//
// Warning: causes page reflows
//
bbox.w = bbox.r = img.offsetWidth/CHTML.em; bbox.h = bbox.t = img.offsetHeight/CHTML.em;
var w = values.width, h = values.height;
var W = bbox.img.img.width/CHTML.em, H = bbox.img.img.height/CHTML.em;
var WW = W, HH = H;
if (w !== "") {W = this.CHTMLlength2em(w,WW); H = (WW ? W/WW * HH : 0)}
if (h !== "") {H = this.CHTMLlength2em(h,HH); if (w === "") W = (HH ? H/HH * WW : 0)}
img.style.width = CHTML.Em(W); bbox.w = bbox.r = W;
img.style.height = CHTML.Em(H); bbox.h = bbox.t = H;
if (values.valign) {
bbox.d = bbox.b = -this.CHTMLlength2em(values.valign,h);
bbox.d = bbox.b = -this.CHTMLlength2em(values.valign,HH);
img.style.verticalAlign = CHTML.Em(-bbox.d);
bbox.h -= bbox.d; bbox.t = bbox.h;
}