suzanne.soy/scribble-math
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Make large fractions actually work

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Summary:
Also, rename it to '\dfrac', because it's more like a display fraction

Auditors: spicyj
This commit is contained in:
Emily Eisenberg 2013-07-07 22:41:22 -07:00
parent 2643f72a9d
commit f97aad13b7
4 changed files with 10 additions and 5 deletions
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4
MJLite.js
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@ -51,8 +51,8 @@ var buildGroup = function(group, prev) {
return makeSpan("mopen", textit(group.value)); return makeSpan("mopen", textit(group.value));
} else if (group.type === "close") { } else if (group.type === "close") {
return makeSpan("mclose", textit(group.value)); return makeSpan("mclose", textit(group.value));
} else if (group.type === "frac") { } else if (group.type === "dfrac") {
var numer = makeSpan("mfracnum", buildExpression(group.value.numer, numer)); var numer = makeSpan("mfracnum", makeSpan("", buildExpression(group.value.numer, numer)));
var mid = makeSpan("mfracmid", makeSpan()); var mid = makeSpan("mfracmid", makeSpan());
var denom = makeSpan("mfracden", buildExpression(group.value.denom, denom)); var denom = makeSpan("mfracden", buildExpression(group.value.denom, denom));

2
lexer.js
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@ -13,7 +13,7 @@ var normals = [
]; ];
var funcs = [ var funcs = [
'cdot', 'frac', 'lvert', 'rvert', 'pm', 'div' 'cdot', 'dfrac', 'lvert', 'rvert', 'pm', 'div'
]; ];
var anyFunc = new RegExp("^\\\\(" + funcs.join("|") + ")(?![a-zA-Z])"); var anyFunc = new RegExp("^\\\\(" + funcs.join("|") + ")(?![a-zA-Z])");

4
parser.jison
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@ -48,8 +48,8 @@ func
{$$ = [{type: 'bin', value: yytext}];} {$$ = [{type: 'bin', value: yytext}];}
| 'div' | 'div'
{$$ = [{type: 'bin', value: yytext}];} {$$ = [{type: 'bin', value: yytext}];}
| 'frac' group group | 'dfrac' group group
{$$ = [{type: 'frac', value: {numer: $2, denom: $3}}];} {$$ = [{type: 'dfrac', value: {numer: $2, denom: $3}}];}
| 'lvert' | 'lvert'
{$$ = [{type: 'open', value: yytext}];} {$$ = [{type: 'open', value: yytext}];}
| 'rvert' | 'rvert'

5
static/style.css
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@ -104,3 +104,8 @@ input {
height: 0.05em; height: 0.05em;
min-height: 1px; min-height: 1px;
} }
.mfracnum > span {
display: inline-block;
vertical-align: bottom;
}