Mercurial > hg > orthanc-stone
diff Applications/StoneWebViewer/Resources/Fonts.txt @ 1660:05b55b89a134
use local copy of open-sans, remove ua-parser
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 19 Nov 2020 10:21:20 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Applications/StoneWebViewer/Resources/Fonts.txt Thu Nov 19 10:21:20 2020 +0100 @@ -0,0 +1,104 @@ + + +Tools for handling TTF and WOFF2 +================================ + +https://fr.wikipedia.org/wiki/Web_Open_Font_Format_2 + + +Print info about a TTF +---------------------- + +$ sudo apt-get install fontconfig +$ fc-query ./2017-11-13-OpenSans-Regular.ttf + + => The "lang" and the "capability" are interesting to know the + supported language. "en" and "otlayout:latn" are a must. + + +Get version of a TTF +-------------------- + +$ fc-query -f '%{fontversion}\n' ./OpenSans/2017-11-13-OpenSans-Regular.ttf | \ + grep -v 'id' | perl -E 'printf "%.3f\n", <>/65536.0' + + => "1.100" indicates version "1.1" + +Source: https://stackoverflow.com/a/43614521/881731 + + +Conversion from TTF to WOFF2 +---------------------------- + +$ sudo apt install woff2 +$ woff2_compress 2017-11-13-OpenSans-Regular.ttf + +Source: https://dev.to/benjaminblack/converting-ttf-fonts-to-woff2-and-woff-3f5b + + + +OpenSans +======== + +General information +------------------- + +Official repository: +https://github.com/googlefonts/opensans/tree/master/ + +License: +Apache License 2.0 + +Google Fonts: +https://fonts.google.com/specimen/Open+Sans#license + +Google CDN: +https://fonts.googleapis.com/css?family=Open+Sans + +Debian package: + +$ sudo apt-get install fonts-open-sans +$ ls -l /usr/share/fonts/truetype/open-sans/ + + +Playing with the CDN +-------------------- + +To fetch the WOFF2 from CDN (selecting WOFF2 instead of TTF is done by +setting the HTTP Header User-Agent): + +$ cd /tmp +$ curl -H 'User-Agent: AppleWebKit/537 Chrome/85' 'https://fonts.googleapis.com/css?family=Open+Sans' + => The "latin" section is what we're looking for +$ wget https://fonts.gstatic.com/s/opensans/v18/mem8YaGs126MiZpBA-UFVZ0b.woff2 + + +To fetch the TTF from CDN: + +$ curl 'https://fonts.googleapis.com/css?family=Open+Sans' +$ wget https://fonts.gstatic.com/s/opensans/v18/mem8YaGs126MiZpBA-UFVZ0e.ttf +$ woff2_compress mem8YaGs126MiZpBA-UFVZ0e.ttf +$ diff -s ./mem8YaGs126MiZpBA-UFVZ0e.woff2 ./mem8YaGs126MiZpBA-UFVZ0b.woff2 + + => The files are identical + + +As of 2020-11-19, the version of the TTF is "1.101": + +$ fc-query -f '%{fontversion}\n' ./mem8YaGs126MiZpBA-UFVZ0e.ttf | \ + grep -v 'id' | perl -E 'printf "%.3f\n", <>/65536.0' + + + +Generation of the "./OpenSans" folder +------------------------------------- + +$ mkdir ./OpenSans +$ cd ./OpenSans +$ REVISION=c0d8ce7dd46291a5d429ac537ddcd3617f4dc229 +$ wget https://github.com/googlefonts/opensans/raw/master/LICENSE.txt +$ curl https://raw.githubusercontent.com/googlefonts/opensans/${REVISION}/ttfs/OpenSans-Regular.ttf > 2017-11-13-OpenSans-Regular.ttf +$ woff2_compress 2017-11-13-OpenSans-Regular.ttf + + => Note that the version of the TTF font is "2.010" (so more recent + than the font on Google Fonts CDN)