gecko-dev/layout/reftests/text-svgglyphs/resources/README

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.woff files for SVG-in-OpenType testing
=======================================
There are three .woff files in this directory:
* nosvg.woff
* svg.woff
* rubbish.woff
nosvg.woff
----------
This font is FiraSansOT-Regular, with its metrics hacked so that its ascent
is 1000 and descent is 0. Its unitsPerEm value is 1000.
It contains no 'SVG ' table.
svg.woff
--------
This font is the same as nosvg.woff above, but with the glyphs-*.svg SVG
documents from this directory embedded in it using the tools described below.
rubbish.woff
------------
This font is the same as nosvg.woff above, but with the addition of an 'SVG '
table with the contents of rubbish.txt. Its purpose is to test that SVG tables
without valid XML are ignored.
Creating the Fonts
------------------
The tools used here are insertsvg.py from [1] and sfnt2woff from [2].
svg.woff can be recreated with:
woff2sfnt nosvg.woff > nosvg.ttf
insertsvg.py nosvg.ttf svg.ttf glyphs-*.svg
sfnt2woff svg.ttf
[1] https://github.com/edf825/SVG-OpenType-Utils
[2] http://people.mozilla.com/~jkew/woff/
Additional test fonts:
======================
svg-glyph-extents.otf
---------------------
This is a copy of Fira Sans with a simple SVG table added using the tool from
https://github.com/rocallahan/svg-opentype-workshop. The SVG table defines four
glyphs, corresponding to 'A' through 'D':
<svg xmlns='http://www.w3.org/2000/svg'>
<rect id='glyph36' x='0' y='-1000' width='1000' height='1500' fill='red'/>
<rect id='glyph37' x='0' y='-1000' width='1000' height='1500' fill='green' transform='scale(2)'/>
<g id='glyph38'>
<rect x='0' y='-1000' width='1000' height='1500' fill='red'/>
</g>
<g id='glyph39'>
<rect x='0' y='-1000' width='1000' height='1500' fill='green' transform='scale(2)'/>
</g>
</svg>