commit 93065ef0557910fdd30fabf7fa712ed7498f5110
parent 55b5803d0aa06b7a00cc0bb55a1d0a2456aa9c8e
Author: Frédéric Wang <fred.wang@free.fr>
Date: Wed, 29 May 2013 15:45:58 +0200
Native MathML: add workarounds for mi, mo (lspace/rspace), mmultiscripts and mspace (width) elements in WebKit. Fix issue #482.
Diffstat:
1 file changed, 146 insertions(+), 1 deletion(-)
diff --git a/unpacked/jax/output/NativeMML/jax.js b/unpacked/jax/output/NativeMML/jax.js
@@ -444,7 +444,14 @@
negativemediummathspace: "-.2222em",
negativethickmathspace: "-.2778em",
negativeverythickmathspace: "-.3333em",
- negativeveryverythickmathspace: "-.3889em"
+ negativeveryverythickmathspace: "-.3889em",
+ veryverythinmathspace: ".0556em",
+ verythinmathspace: ".1111em",
+ thinmathspace: ".1667em",
+ mediummathspace: ".2222em",
+ thickmathspace: ".2778em",
+ verythickmathspace: ".3333em",
+ veryverythickmathspace: ".3889em"
}
});
@@ -1089,6 +1096,138 @@
}
});
+ MML.mi.Augment({
+ toNativeMML: function (parent) {
+ this.SUPER(arguments).toNativeMML.call(this,parent);
+ if (nMML.miItalicBug) {
+ if (this.Get("mathvariant") == "normal") {
+ //
+ // When not explicitly specified, mathvariant is set to "italic"
+ // with single char mi and to "normal" with multiple char mi.
+ // Some browsers always set the default to "italic", so modify the
+ // style when it is supposed to be "normal".
+ //
+ var mi = parent.lastChild;
+ var span = HTML.Element("span");
+ span.style.cssText = (mi.getAttribute("style")||"");
+ span.style.fontStyle = "normal";
+ mi.setAttribute("style",span.style.cssText);
+ }
+ }
+ }
+ });
+
+ MML.mo.Augment({
+ toNativeMML: function (parent) {
+ this.SUPER(arguments).toNativeMML.call(this,parent);
+ if (nMML.webkitMoSpacingBug) {
+ //
+ // WebKit does not support lspace/rspace values around operators
+ // (neither explicit nor given by the operator dictionary) and uses
+ // constant values instead. So let's modify the CSS properties here.
+ //
+
+ //
+ // Retrieve the values of lspace/rspace and convert named spaces.
+ // Other values (except unitless) will be parsed by the CSS engine.
+ //
+ var values = this.getValues("lspace", "rspace");
+ var lspace = values.lspace, rspace = values.rspace;
+ if (nMML.NAMEDSPACE[lspace]) {lspace = nMML.NAMEDSPACE[lspace]}
+ if (nMML.NAMEDSPACE[rspace]) {rspace = nMML.NAMEDSPACE[rspace]}
+
+ //
+ // Now update -webkit-margin-start and -webkit-margin-end.
+ //
+ var mo = parent.lastChild;
+ var span = HTML.Element("span");
+ span.style.cssText = (mo.getAttribute("style")||"");
+ span.style.setProperty("-webkit-margin-start", lspace);
+ span.style.setProperty("-webkit-margin-end", rspace);
+ mo.setAttribute("style",span.style.cssText);
+ }
+ }
+ });
+
+ MML.mmultiscripts.Augment({
+ toNativeMML: function (parent) {
+ //
+ // Some browsers do not implement the mmultiscripts element.
+ // Try to emulate the support using basic script elements.
+ //
+ if (!nMML.mmultiscriptsBug || this.data.length == 0 ) {
+ this.SUPER(arguments).toNativeMML.call(this,parent);
+ return;
+ }
+
+ //
+ // The children of the mmultiscripts will be wrapped in an mrow so that
+ // attributes and properties set on the original mmultiscripts will
+ // be reflected on this mrow element.
+ //
+ var tag = this.NativeMMLelement("mrow");
+ this.NativeMMLattributes(tag);
+
+ //
+ // Create the base
+ //
+ if (this.data[0]) {this.data[0].toNativeMML(tag)}
+ else {tag.appendChild(this.NativeMMLelement("mrow"))}
+ base = tag.removeChild(tag.lastChild);
+
+ //
+ // Process the postscript pairs
+ //
+ var m = this.data.length, i;
+ for (i = 1; i < m; i+=2) {
+ if (this.data[i].type == "mprescripts") break;
+
+ var msubsup = this.NativeMMLelement("msubsup");
+ msubsup.appendChild(base);
+
+ //
+ // append the subscript
+ //
+ if (this.data[i]) {this.data[i].toNativeMML(msubsup)}
+ else {msubsup.appendChild(this.NativeMMLelement("mrow"))}
+
+ //
+ // append the supscript
+ //
+ if (i+1 < m && this.data[i+1]) {this.data[i+1].toNativeMML(msubsup)}
+ else {msubsup.appendChild(this.NativeMMLelement("mrow"))}
+
+ base = msubsup;
+ }
+
+ tag.appendChild(base);
+
+ //
+ // Process the prescript pairs
+ //
+ for (i++; i < m; i+=2) {
+ var msubsup = this.NativeMMLelement("msubsup");
+ msubsup.appendChild(this.NativeMMLelement("mrow"));
+
+ //
+ // append the presubscript
+ //
+ if (this.data[i]) {this.data[i].toNativeMML(msubsup)}
+ else {msubsup.appendChild(this.NativeMMLelement("mrow"))}
+
+ //
+ // append the presupscript
+ //
+ if (i+1 < m && this.data[i+1]) {this.data[i+1].toNativeMML(msubsup)}
+ else {msubsup.appendChild(this.NativeMMLelement("mrow"))}
+
+ tag.insertBefore(msubsup, base);
+ }
+
+ parent.appendChild(tag);
+ }
+ });
+
HUB.Register.StartupHook("TeX mathchoice Ready",function () {
MML.TeXmathchoice.Augment({
//
@@ -1121,6 +1260,8 @@
nMML.stretchyMoBug = true;
nMML.tableLabelBug = true;
nMML.mfencedBug = true;
+ nMML.miBug = true;
+ nMML.mmultiscriptsBug = true;
},
Firefox: function (browser) {
nMML.ffTableWidthBug = !browser.versionAtLeast("13.0"); // <mtable width="xx"> not implemented
@@ -1145,6 +1286,10 @@
nMML.tableSpacingBug = true;
nMML.tableLabelBug = true;
nMML.mfencedBug = true;
+ nMML.miItalicBug = true;
+ nMML.webkitMoSpacingBug = true;
+ nMML.spaceWidthBug = true;
+ nMML.mmultiscriptsBug = true;
}
});
