79ab06d88d
Summary:
The `\dots` and `\dots{c,o,b,i,m}` commands do more than just show characters,
they add extra space and `\dots` also looks ahead to determine what kind of
environment it is in (see [this math.sx post]
(http://tex.stackexchange.com/questions/122491/difference-of-the-dots)). We
can't support that yet, so remove them.
Also, add comments to the extract_ttf script to show what caracters we are
extracting metrics for.
Test Plan: - Make sure tests work
Reviewers: alpert
Reviewed By: alpert
Differential Revision: http://phabricator.khanacademy.org/D13151
52 lines
1.2 KiB
Python
Executable File
52 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python
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import fontforge
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import sys
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import json
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metrics_to_extract = {
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"Main-Regular": [
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u"\u2260", # \neq
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u"\u2245", # \cong
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u"\u0020", # space
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u"\u00a0", # nbsp
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u"\u2026", # \ldots
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u"\u22ef", # \cdots
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u"\u22f1", # \ddots
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u"\u22ee", # \vdots
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]
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}
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def main():
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start_json = json.load(sys.stdin)
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for font, chars in metrics_to_extract.iteritems():
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fontInfo = fontforge.open("../static/fonts/KaTeX_" + font + ".ttf")
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for glyph in fontInfo.glyphs():
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try:
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char = unichr(glyph.unicode)
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except ValueError:
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continue
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if char in chars:
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_, depth, _, height = glyph.boundingBox()
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depth = -depth
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# TODO(emily): Figure out a real way to calculate this
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italic = 0
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start_json[font][ord(char)] = {
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height: height / fontInfo.em,
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depth: depth / fontInfo.em,
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italic: italic / fontInfo.em,
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}
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sys.stdout.write(
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json.dumps(start_json, separators=(',', ':'), sort_keys=True))
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if __name__ == "__main__":
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main()
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