e472b0ba9d
Test Plan:
`\blue\frac12 + \frac{2(y-z)}{2+\frac1{7+\frac31}} \div \orange{\arctan x^{2+\frac43}_{2}} * 2^{2^{2^2}}` looks reasonable, as does
`\blue\frac12 + \dfrac{2(y-z)}{2+\frac1{7+\frac31}} \div \orange{\arctan x^{2+\frac43}_{2}} * 2^{2^{2^2}}`.
Reviewers: emily
Reviewed By: emily
Differential Revision: http://phabricator.khanacademy.org/D3047
66 lines
1.3 KiB
JavaScript
66 lines
1.3 KiB
JavaScript
function Style(id, size, cramped) {
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this.id = id;
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this.size = size;
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this.cramped = cramped;
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}
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Style.prototype.sup = function() {
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return styles[sup[this.id]];
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};
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Style.prototype.sub = function() {
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return styles[sub[this.id]];
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};
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Style.prototype.fracNum = function() {
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return styles[fracNum[this.id]];
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};
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Style.prototype.fracDen = function() {
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return styles[fracDen[this.id]];
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};
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/**
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* HTML class name, like "display cramped"
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*/
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Style.prototype.cls = function() {
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return sizeNames[this.size] + (this.cramped ? " cramped" : " uncramped");
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};
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var D = 0;
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var Dc = 1;
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var T = 2;
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var Tc = 3;
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var S = 4;
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var Sc = 5;
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var SS = 6;
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var SSc = 7;
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var sizeNames = [
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"displaystyle textstyle",
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"textstyle",
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"scriptstyle",
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"scriptscriptstyle"
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];
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var styles = [
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new Style(D, 0, false),
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new Style(Dc, 0, true),
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new Style(T, 1, false),
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new Style(Tc, 1, true),
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new Style(S, 2, false),
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new Style(Sc, 2, true),
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new Style(SS, 3, false),
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new Style(SSc, 3, true)
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];
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var sup = [S, Sc, S, Sc, SS, SSc, SS, SSc];
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var sub = [Sc, Sc, Sc, Sc, SSc, SSc, SSc, SSc];
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var fracNum = [T, Tc, S, Sc, SS, SSc, SS, SSc];
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var fracDen = [Tc, Tc, Sc, Sc, SSc, SSc, SSc, SSc];
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module.exports = {
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DISPLAY: styles[D],
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TEXT: styles[T],
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};
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