ad97dab19c
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
48 lines
1.0 KiB
Ruby
48 lines
1.0 KiB
Ruby
require 'json'
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require 'rubygems'
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require 'ttfunk'
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def metrics_for_file(filename)
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file = TTFunk::File.open(filename)
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per_em = 1.0 * file.header.units_per_em
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chars = {}
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file.cmap.unicode[0].code_map.sort.each do |u, g|
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horiz = file.horizontal_metrics.for(g)
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# width = (horiz.advance_width / per_em).round(3)
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height = 0
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depth = 0
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italic = 0
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glyph = file.glyph_outlines.for(g)
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if glyph
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height = (glyph.y_max / per_em).round(3)
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depth = (-glyph.y_min / per_em).round(3)
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italic = [0, (glyph.x_max - horiz.advance_width) / per_em].max.round(3)
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end
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chars[u] = {
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# :width => width,
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:height => height,
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:depth => depth,
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:italic => italic,
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}
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end
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chars
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end
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font_dir = File.join(File.dirname(__FILE__), 'static/fonts/')
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metrics = {}
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%w[Main-Regular Math-Italic AMS-Regular
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Size1-Regular Size2-Regular Size3-Regular Size4-Regular].each do |face|
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metrics[face] = metrics_for_file(File.join(font_dir, 'KaTeX_%s.ttf' % face))
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end
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puts "var metricMap = %s;" % metrics.to_json
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