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KaTeX/static/katex.less
Emily Eisenberg 02935f7dde Add an 'implicit group' parser, use with sizing
Summary:
Implicit groups are objects that act like groups but don't have brackets around
them. This is used for things like sizing functions or font-change functions
that can occur in the middle of the group, but act like they apply to a group
after them which stops when the current group stops. E.g. `Hello {world \Large
hello} world` produces normal, normal, Large, normal text. (Note, I just came up
with the name implicit group, I don't think this is actually how it is parsed in
LaTeX but it fits nicely with the current parsing scheme and seems to work
well).

For now, apply this to the sizing functions (we don't have any other functions
that act like this). Also note that this doesn't really do much practically
because we limit sizing functions to only be on the top level of the expression,
but it does let people do `\Large x` and get a large `x`, without having to add
braces.

Test Plan:
 - Run the tests, see they work
 - Make sure `abc \Large abc` looks correct

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D10876
2014-07-10 16:06:19 -07:00

346 lines
7.9 KiB
Plaintext

/*
things to do:
\sum, \int, \lim
\sqrt
big parens
*/
.katex {
font: normal 1.21em katex_main;
line-height: 1.2;
white-space: nowrap;
.katex-inner {
// Making .katex inline-block allows line breaks before and after,
// which is undesireable ("to $x$,"). Instead, adjust the .katex-inner
// style and put nowrap on the inline .katex element.
display: inline-block;
}
.base {
display: inline-block;
}
.strut {
display: inline-block;
}
.mathit {
font-family: katex_math;
font-style: italic;
}
.amsrm {
font-family: katex_ams;
}
@thinspace: 0.16667em;
@mediumspace: 0.22222em;
@thickspace: 0.27778em;
.textstyle {
> .mord {
& + .mord {}
& + .mop { margin-left: @thinspace; }
& + .mbin { margin-left: @mediumspace; }
& + .mrel { margin-left: @thickspace; }
& + .mopen {}
& + .mclose {}
& + .mpunct {}
& + .minner { margin-left: @thinspace; }
}
> .mop {
& + .mord { margin-left: @thinspace; }
& + .mop { margin-left: @thinspace; }
& + .mbin {}
& + .mrel { margin-left: @thickspace; }
& + .mopen {}
& + .mclose {}
& + .mpunct {}
& + .minner { margin-left: @thinspace; }
}
> .mbin {
& + .mord { margin-left: @mediumspace; }
& + .mop { margin-left: @mediumspace; }
& + .mbin {}
& + .mrel {}
& + .mopen { margin-left: @mediumspace; }
& + .mclose {}
& + .mpunct {}
& + .minner { margin-left: @mediumspace; }
}
> .mrel {
& + .mord { margin-left: @thickspace; }
& + .mop { margin-left: @thickspace; }
& + .mbin {}
& + .mrel {}
& + .mopen { margin-left: @thickspace; }
& + .mclose {}
& + .mpunct {}
& + .minner { margin-left: @thickspace; }
}
> .mopen {
& + .mord {}
& + .mop {}
& + .mbin {}
& + .mrel {}
& + .mopen {}
& + .mclose {}
& + .mpunct {}
& + .minner {}
}
> .mclose {
& + .mord {}
& + .mop { margin-left: @thinspace; }
& + .mbin { margin-left: @mediumspace; }
& + .mrel { margin-left: @thickspace; }
& + .mopen {}
& + .mclose {}
& + .mpunct {}
& + .minner { margin-left: @thinspace; }
}
> .mpunct {
& + .mord { margin-left: @thinspace; }
& + .mop { margin-left: @thinspace; }
& + .mbin {}
& + .mrel { margin-left: @thinspace; }
& + .mopen { margin-left: @thinspace; }
& + .mclose { margin-left: @thinspace; }
& + .mpunct { margin-left: @thinspace; }
& + .minner { margin-left: @thinspace; }
}
> .minner {
& + .mord { margin-left: @thinspace; }
& + .mop { margin-left: @thinspace; }
& + .mbin { margin-left: @mediumspace; }
& + .mrel { margin-left: @thickspace; }
& + .mopen { margin-left: @thinspace; }
& + .mclose {}
& + .mpunct { margin-left: @thinspace; }
& + .minner { margin-left: @thinspace; }
}
}
.mord {
& + .mop { margin-left: @thinspace; }
}
.mop {
& + .mord { margin-left: @thinspace; }
& + .mop { margin-left: @thinspace; }
}
.mclose {
& + .mop { margin-left: @thinspace; }
}
.minner {
& + .mop { margin-left: @thinspace; }
}
.reset-textstyle.textstyle { font-size: 1em; }
.reset-textstyle.scriptstyle { font-size: 0.66667em; }
.reset-textstyle.scriptscriptstyle { font-size: 0.5em; }
.reset-scriptstyle.textstyle { font-size: 1.5em; }
.reset-scriptstyle.scriptstyle { font-size: 1em; }
.reset-scriptstyle.scriptscriptstyle { font-size: 0.75em; }
.reset-scriptscriptstyle.textstyle { font-size: 2em; }
.reset-scriptscriptstyle.scriptstyle { font-size: 1.5em; }
.reset-scriptscriptstyle.scriptscriptstyle { font-size: 1em; }
.baseline-align-hack-outer() {
display: inline-block;
}
.baseline-align-hack-middle() {
display: block;
height: 0;
}
.baseline-align-hack-inner() {
display: inline-block;
}
.msupsub {
.baseline-align-hack-outer;
text-align: left;
// The rendering of $y'$, for example, looks bad without this.
// TODO(alpert): Obviously incorrect. Figure out the proper fix here.
margin-left: 0.05em;
.msup,
.msub,
.fix-ie {
.baseline-align-hack-middle;
position: relative;
> span {
.baseline-align-hack-inner;
}
}
.fix-ie {
display: inline-block;
}
}
.mfrac {
.baseline-align-hack-outer;
.mfracnum,
.mfracmid,
.mfracden,
.fix-ie {
.baseline-align-hack-middle;
position: relative;
text-align: center;
> span {
.baseline-align-hack-inner;
}
}
.fix-ie {
display: inline-block;
}
.mfracmid > span {
width: 100%;
&:before {
border-bottom-style: solid;
border-bottom-width: 1px;
content: "";
display: block;
}
&:after {
border-bottom-style: solid;
border-bottom-width: 0.05em;
content: "";
display: block;
margin-top: -1px;
}
}
}
.mspace {
display: inline-block;
&.negativethinspace {
margin-left: -@thinspace;
}
&.thinspace {
width: @thinspace;
}
&.mediumspace {
width: @mediumspace;
}
&.thickspace {
width: @thickspace;
}
&.enspace {
width: 0.5em;
}
&.quad {
width: 1em;
}
&.qquad {
width: 2em;
}
}
.llap,
.rlap {
width: 0;
position: relative;
> .inner {
position: absolute;
}
> .fix {
display: inline-block;
}
}
.llap > .inner {
right: 0;
}
.rlap > .inner {
left: 0;
}
.katex-logo {
.a {
font-size: 0.75em;
margin-left: -0.32em;
position: relative;
top: -0.2em;
}
.t {
margin-left: -0.23em;
}
.e {
margin-left: -0.1667em;
position: relative;
top: 0.2155em;
}
.x {
margin-left: -0.125em;
}
}
.sizing { display: inline-block; }
@size-1: 0.5;
@size-2: 0.7;
@size-3: 0.8;
@size-4: 0.9;
@size-5: 1.0;
@size-6: 1.2;
@size-7: 1.44;
@size-8: 1.73;
@size-9: 2.07;
@size-10: 2.49;
.generate-size-change(@from, @to) {
.reset-size@{from}.size@{to} {
@sizeFromVariable: ~"size-@{from}";
@sizeToVariable: ~"size-@{to}";
font-size: (@@sizeToVariable / @@sizeFromVariable) * 1em;
}
}
.generate-to-size-change(@from, @currTo) when (@currTo =< 10) {
.generate-size-change(@from, @currTo);
.generate-to-size-change(@from, (@currTo + 1));
}
.generate-from-size-change(@currFrom) when (@currFrom =< 10) {
.generate-to-size-change(@currFrom, 1);
.generate-from-size-change((@currFrom + 1));
}
.generate-from-size-change(1);
}