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Use absolute width in pixels rather than relative widht in em's to work around margin scaling bug in IE (documentMode <= 7). This avoids the cumbersome msieMarginScale measurements and multiplication factor, which was touchy at best.

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This commit is contained in:
Davide P. Cervone 2011-09-20 11:45:35 -04:00
parent 636f802b59
commit 6910620f4a
6 changed files with 10 additions and 35 deletions
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2
config/Accessible-full.js
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2
config/MML_HTMLorMML-full.js
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2
config/TeX-AMS-MML_HTMLorMML-full.js
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config/TeX-AMS_HTML-full.js
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jax/output/HTML-CSS/jax.js
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35
unpacked/jax/output/HTML-CSS/jax.js
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@ -369,12 +369,6 @@
]
]
);
if (this.msieMarginScaleBug) {
this.addElement(this.EmExSpan.lastChild,"span",null,[
["span",{style:{display:"inline-block",width:"5em"}}],
["span",{style:{display:"inline-block",width:"5em",marginLeft:"-5em"}}]
]);
}
// Used in getLinebreakWidth
this.linebreakSpan = HTMLCSS.Element("span",null,
@ -475,26 +469,7 @@
}
scale = Math.floor(Math.max(this.config.minScaleAdjust/100,(ex/this.TeX.x_height)/em) * this.config.scale);
jax.HTMLCSS.scale = scale/100; jax.HTMLCSS.fontSize = scale+"%";
jax.HTMLCSS.marginScale = 1; jax.HTMLCSS.em = jax.HTMLCSS.outerEm = em;
}
//
// If we need to determine MSIE margin scaling,
// set the font sizes (which is what causes the problem)
// and then read the scaling factor (again only one reflow needed)
//
if (this.msieMarginScaleBug) {
for (i = 0; i < m; i++) {
script = scripts[i]; if (!script.parentNode) continue;
jax = script.MathJax.elementJax; test = this.getTestSpan(script);
test.lastChild.style.fontSize = jax.HTMLCSS.fontSize;
}
for (i = 0; i < m; i++) {
script = scripts[i]; if (!script.parentNode) continue;
test = this.getTestSpan(script);
var W = test.lastChild.lastChild.offsetWidth,
w = test.lastChild.lastChild.firstChild.offsetWidth;
jax.HTMLCSS.marginScale = (2*w - W ? w/(2*w - W) : 1);
}
jax.HTMLCSS.em = jax.HTMLCSS.outerEm = em;
}
//
// Remove the test spans used for determining scales
@ -530,7 +505,7 @@
// Set the font metrics
//
this.em = MML.mbase.prototype.em = jax.HTMLCSS.em * jax.HTMLCSS.scale;
this.outerEm = jax.HTMLCSS.em; this.msieMarginScale = jax.HTMLCSS.marginScale;
this.outerEm = jax.HTMLCSS.em;
span.style.fontSize = jax.HTMLCSS.fontSize;
this.getLinebreakWidth(div);
//
@ -625,7 +600,7 @@
//
var emex = span.appendChild(this.EmExSpan.cloneNode(true));
var em = emex.lastChild.firstChild.offsetWidth/60;
this.msieMarginScale = 1; this.em = MML.mbase.prototype.em = em;
this.em = MML.mbase.prototype.em = em;
this.outerEm = em / jax.HTMLCSS.scale;
emex.parentNode.removeChild(emex);
@ -1033,7 +1008,7 @@
var isRelative = bbox.width != null && !bbox.isFixed;
var r = 0, c = -bbox.w/2, l = "50%";
if (this.initialSkipBug) {r = bbox.w-bbox.rw-.1; c += bbox.lw}
c = this.Em(c*this.msieMarginScale);
if (this.msieMarginScaleBug) {c = (c*this.em) + "px"} else {c = this.Em(c)}
if (isRelative) {c = ""; l = (50 - parseFloat(bbox.width)/2) + "%"}
HUB.Insert(span.style,({
right: {left:"", right: this.Em(r)},
@ -2505,7 +2480,7 @@
msieColorPositionBug: true, // needs position:relative to put color behind text
msieRelativeWidthBug: quirks,
msieDisappearingBug: (mode >= 8), // inline math disappears
msieMarginScaleBug: (mode < 8), // margins are not scaled properly by font-size
msieMarginScaleBug: (mode < 8), // relative margins are not scaled properly by font-size
msiePaddingWidthBug: true,
msieBorderWidthBug: quirks,
msieInlineBlockAlignBug: (!isIE8 || quirks),