suzanne.soy/scribble-mathjax
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Add support for style='font-family:...', fontfamily, fontweight, and fontstyle attributes. Cache the results in case they are used more than once.

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This commit is contained in:
Davide P. Cervone 2015-03-16 09:18:35 -04:00
parent 6a81434b16
commit 5d3508d830
1 changed files with 97 additions and 16 deletions
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113
unpacked/jax/output/CommonHTML/jax.js
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@ -601,14 +601,32 @@
unknown[n] = [.8,.2,HDW.w,0,HDW.w,{a:a, A:HDW.h-a, d:HDW.d}];
unknown[n].c = c;
},
styledText: function (variant,text) {
HUB.signal.Post(["CommonHTML Jax - styled text",text,variant]);
var style = variant.style;
var id = "_"+style.family;
if (style.weight) id += "_"+style.weight;
if (style.style) id += "_"+style.style;
if (!this.STYLEDTEXT) this.STYLEDTEXT = {};
if (!this.STYLEDTEXT[id]) this.STYLEDTEXT[id] = {cache:{}, className:""};
var unknown = this.STYLEDTEXT[id];
if (!unknown["_"+text]) {
var HDW = this.getHDW(text,"",style);
var a = (HDW.h-HDW.d)/2+AFUZZ; // ### FIXME: is this really the axis of the surrounding text?
unknown["_"+text] = [.8,.2,HDW.w,0,HDW.w,{a:a, A:HDW.h-a, d:HDW.d}];
unknown["_"+text].c = text;
}
return {type:"unknown", n:"_"+text, font:unknown, style:style};
},
//
// Get the height, depth and width of a character
// (height and depth are of the font, not the character).
// WARNING: causes reflow of the page!
//
getHDW: function (c,name) {
var test1 = HTML.addElement(document.body,"mjx-chartest",{className:name},[["mjx-char",{},[c]]]);
var test2 = HTML.addElement(document.body,"mjx-chartest",{className:name},[["mjx-char",{},[c,["mjx-box"]]]]);
getHDW: function (c,name,styles) {
var test1 = HTML.addElement(document.body,"mjx-chartest",{className:name,style:styles},[["mjx-char",{},[c]]]);
var test2 = HTML.addElement(document.body,"mjx-chartest",{className:name,style:styles},[["mjx-char",{},[c,["mjx-box"]]]]);
var em = window.parseFloat(window.getComputedStyle(test1).fontSize);
var d = (test2.offsetHeight-500)/em;
var w = test1.offsetWidth/em, h = test1.offsetHeight/em - d;
@ -616,6 +634,7 @@
document.body.removeChild(test2);
return {h:h, d:d, w:w}
},
/********************************************************/
@ -674,7 +693,7 @@
//
unknown: function (item,node,bbox,state) {
this.char(item,node,bbox,state,0);
node = this.flushText(node,state);
node = this.flushText(node,state,item.style);
node.style.lineHeight = "normal";
var C = item.font[item.n];
node.style.marginTop = CHTML.Em(-C[5].A-HFUZZ);
@ -686,8 +705,9 @@
// Put the pending text into a box of the class, and
// reset the data about the text.
//
flushText: function (node,state) {
node = HTML.addElement(node,"mjx-charbox",{className:state.className},[state.text]);
flushText: function (node,state,style) {
node = HTML.addElement(node,"mjx-charbox",
{className:state.className,style:style},[state.text]);
state.text = ""; state.className = null;
return node;
}
@ -703,15 +723,18 @@
HTML.addElement(node,"mjx-char");
bbox = CHTML.BBOX.empty();
}
var string = {text:text, i:0, length:text.length};
if (typeof(variant) === "string") variant = this.FONTDATA.VARIANT[variant];
if (!variant) variant = this.FONTDATA.VARIANT[MML.VARIANT.NORMAL];
var list = [];
while (string.i < string.length) {
var n = this.getUnicode(string);
list.push.apply(list,this.getCharList(variant,n));
var string = {text:text, i:0, length:text.length}, list = [];
if (variant.style && string.length) {
list.push(this.styledText(variant,text));
} else {
while (string.i < string.length) {
var n = this.getUnicode(string);
list.push.apply(list,this.getCharList(variant,n));
}
}
this.addCharList(node.firstChild,list,bbox);
if (list.length) this.addCharList(node.firstChild,list,bbox);
bbox.clean();
bbox.h += HFUZZ; bbox.d += DFUZZ; bbox.t += HFUZZ; bbox.b += DFUZZ;
node.firstChild.style[bbox.h < 0 ? "marginTop" : "paddingTop"] = this.Em(bbox.h-(bbox.a||0));
@ -1032,6 +1055,7 @@
CHTMLdefaultNode: function (node,options) {
if (!options) options = {};
node = this.CHTMLcreateNode(node);
if (this.isToken) this.CHTMLgetVariant();
var m = Math.max((options.minChildren||0),this.data.length);
for (var i = 0; i < m; i++) this.CHTMLaddChild(node,i,options);
if (!options.noBBox) {
@ -1189,6 +1213,63 @@
CHTMLhandleText: function (node,text,variant) {
this.CHTML = CHTML.handleText(node,text,variant,this.CHTML);
},
CHTMLgetVariant: function () {
var values = this.getValues("mathvariant","fontfamily","fontweight","fontstyle");
values.hasVariant = this.Get("mathvariant",true); // null if not explicitly specified
if (this.style) {
var span = HTML.Element("span"); span.style.cssText = this.style;
if (span.style.fontFamily) values.family = span.style.fontFamily;
if (span.style.fontWeight) values.weight = span.style.fontWeight;
if (span.style.fontStyle) values.style = span.style.fontStyle;
}
if (!values.hasVariant) {
if (values.fontfamily) values.family = values.fontfamily;
if (values.fontweight) values.weight = values.fontweight;
if (values.fontstyle) values.style = values.fontstyle;
}
if (values.weight && values.weight.match(/^\d+$/))
values.weight = (parseInt(values.weight) > 600 ? "bold" : "normal");
var variant = values.mathvariant; if (this.variantForm) variant = "-TeX-variant";
if (values.family && !values.hasVariant) {
if (!values.weight && values.mathvariant.match(/bold/)) values.weight = "bold";
if (!values.style && values.mathvariant.match(/italic/)) values.style = "italic";
this.CHTMLvariant = {fonts:[], noRemap:true, cache:{}, style: {
"font-family":values.family, "font-weight":values.weight, "font-style":values.style
}};
return;
}
if (values.weight === "bold") {
variant = {
normal:MML.VARIANT.BOLD, italic:MML.VARIANT.BOLDITALIC,
fraktur:MML.VARIANT.BOLDFRAKTUR, script:MML.VARIANT.BOLDSCRIPT,
"sans-serif":MML.VARIANT.BOLDSANSSERIF,
"sans-serif-italic":MML.VARIANT.SANSSERIFBOLDITALIC
}[variant]||variant;
} else if (values.weight === "normal") {
variant = {
bold:MML.VARIANT.normal, "bold-italic":MML.VARIANT.ITALIC,
"bold-fraktur":MML.VARIANT.FRAKTUR, "bold-script":MML.VARIANT.SCRIPT,
"bold-sans-serif":MML.VARIANT.SANSSERIF,
"sans-serif-bold-italic":MML.VARIANT.SANSSERIFITALIC
}[variant]||variant;
}
if (values.style === "italic") {
variant = {
normal:MML.VARIANT.ITALIC, bold:MML.VARIANT.BOLDITALIC,
"sans-serif":MML.VARIANT.SANSSERIFITALIC,
"bold-sans-serif":MML.VARIANT.SANSSERIFBOLDITALIC
}[variant]||variant;
} else if (values.style === "normal") {
variant = {
italic:MML.VARIANT.NORMAL, "bold-italic":MML.VARIANT.BOLD,
"sans-serif-italic":MML.VARIANT.SANSSERIF,
"sans-serif-bold-italic":MML.VARIANT.BOLDSANSSERIF
}[variant]||variant;
}
this.CHTMLvariant = CHTML.FONTDATA.VARIANT[variant] ||
CHTML.FONTDATA.VARIANT[MML.VARIANT.NORMAL];
},
CHTMLbboxFor: function (n) {
if (this.data[n] && this.data[n].CHTML) return this.data[n].CHTML;
@ -1212,7 +1293,6 @@
]);
},
CHTMLnotEmpty: function (mml) {
while (mml && mml.data.length < 2 && (mml.type === "mrow" || mml.type === "texatom"))
mml = mml.data[0];
@ -1229,7 +1309,7 @@
var text = this.toString();
if (options.remap) text = options.remap(text,options.remapchars);
// ### FIXME: handle mtextFontInherit
this.CHTMLhandleText(node,text,options.variant||this.parent.Get("mathvariant"));
this.CHTMLhandleText(node,text,options.variant||this.parent.CHTMLvariant);
}
});
MML.entity.Augment({
@ -1238,7 +1318,7 @@
var text = this.toString();
if (options.remapchars) text = options.remap(text,options.remapchars);
// ### FIXME: handle mtextFontInherit
this.CHTMLhandleText(node,text,options.variant||this.parent.Get("mathvariant"));
this.CHTMLhandleText(node,text,options.variant||this.parent.CHTMLvariant);
}
});
@ -1437,7 +1517,8 @@
this.CHTMLhandleStyle(node);
this.CHTMLhandleColor(node);
return node;
}
},
CHTMLgetVariant: function () {}
});
/********************************************************/