Commit Graph

4 Commits

Author SHA1 Message Date
Emily Eisenberg
ad97dab19c Update fonts from MathJax
Summary:
Also, rename all of our uses of fonts to use the uppercased versions. We want to
use the uppercase versions because it makes updating and modifying the fonts
much easier (since the font names inside the actual font files are uppercased).

Test Plan:
  - Make sure the huxley screenshots look good (You can compare a diff of them
    on github at
    f90d093361
    By my eye, it seems like some things have moved up ~1/2 pixel, and some of
    the fonts have maybe slightly changed shape, like the large `b` in
    SizingBaseline)

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D11979
2014-08-06 17:52:26 -07:00
Emily Eisenberg
100798847b Add delimiter sizing
Summary:
Make delimiter sizing work. This involved
 - Adding the symbols for the remaining delimiters (like `\lfloor` and `\{`)
 - Adding metrics for the size1, size2, size3, and size4 fonts
 - Parsing delimiter sizing functions
 - Using the big fonts when possible, otherwise building large copies of the
   delimiters from scratch

Test Plan:
 - See that
   `\bigl\uparrow\Bigl\downarrow\biggl\updownarrow\Biggl\Uparrow
    \Biggr\Downarrow\biggr\Updownarrow\bigm/\Bigm\backslash\biggm|
    \Biggm|\big\lceil\Big\rceil\bigg\langle\Bigg\rangle\bigl(\Bigl)
    \biggl[\Biggl]\Biggr\{\biggr\}\Bigr\lfloor\bigr\rfloor`
   parses correctly (this contains all of the delimiters, and all of the sizing
   modes)
 - See that the huxley tests didn't change, and the new one looks good
 - See the normal tests work

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D7844
2014-08-05 16:43:43 -07:00
Emily Eisenberg
920dd0bef9 Add some AMS characters
Summary:
\nleq and \ngeq are AMS characters, so add support for parsing and
showing those. Also, add font metrics from the ams_regular font.

Test Plan:
View `\ngeq \geq`, make sure that they look the same but with a
slash through `\ngeq`. View `a \ngeq b`, make sure there's the right spacing
for a rel.

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D3547
2013-08-14 17:39:24 -07:00
Ben Alpert
7f25fd7dc9 Parse metrics directly from .ttf files
Summary:
Fixes T1325.

This has the advantage of not having to do the mapping manually. Also it means that characters like \neq are included in the mapping, so this resolves T1323 as well.

I opted to group the metrics by character instead of by metric type because I think it'll gzip better and it makes getCharacterMetrics simpler anyway.

Test Plan: The test page looks identical to the pixel to my eye.

Reviewers: emily

Reviewed By: emily

Maniphest Tasks: T1323, T1325

Differential Revision: http://phabricator.khanacademy.org/D3535
2013-08-14 10:57:00 -07:00