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comparison Applications/StoneWebViewer/Resources/Fonts.txt @ 1660:05b55b89a134

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use local copy of open-sans, remove ua-parser
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 19 Nov 2020 10:21:20 +0100
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1659:641d39cc8537 1660:05b55b89a134
1
2
3 Tools for handling TTF and WOFF2
4 ================================
5
6 https://fr.wikipedia.org/wiki/Web_Open_Font_Format_2
7
8
9 Print info about a TTF
10 ----------------------
11
12 $ sudo apt-get install fontconfig
13 $ fc-query ./2017-11-13-OpenSans-Regular.ttf
14
15 => The "lang" and the "capability" are interesting to know the
16 supported language. "en" and "otlayout:latn" are a must.
17
18
19 Get version of a TTF
20 --------------------
21
22 $ fc-query -f '%{fontversion}\n' ./OpenSans/2017-11-13-OpenSans-Regular.ttf | \
23 grep -v 'id' | perl -E 'printf "%.3f\n", <>/65536.0'
24
25 => "1.100" indicates version "1.1"
26
27 Source: https://stackoverflow.com/a/43614521/881731
28
29
30 Conversion from TTF to WOFF2
31 ----------------------------
32
33 $ sudo apt install woff2
34 $ woff2_compress 2017-11-13-OpenSans-Regular.ttf
35
36 Source: https://dev.to/benjaminblack/converting-ttf-fonts-to-woff2-and-woff-3f5b
37
38
39
40 OpenSans
41 ========
42
43 General information
44 -------------------
45
46 Official repository:
47 https://github.com/googlefonts/opensans/tree/master/
48
49 License:
50 Apache License 2.0
51
52 Google Fonts:
53 https://fonts.google.com/specimen/Open+Sans#license
54
55 Google CDN:
56 https://fonts.googleapis.com/css?family=Open+Sans
57
58 Debian package:
59
60 $ sudo apt-get install fonts-open-sans
61 $ ls -l /usr/share/fonts/truetype/open-sans/
62
63
64 Playing with the CDN
65 --------------------
66
67 To fetch the WOFF2 from CDN (selecting WOFF2 instead of TTF is done by
68 setting the HTTP Header User-Agent):
69
70 $ cd /tmp
71 $ curl -H 'User-Agent: AppleWebKit/537 Chrome/85' 'https://fonts.googleapis.com/css?family=Open+Sans'
72 => The "latin" section is what we're looking for
73 $ wget https://fonts.gstatic.com/s/opensans/v18/mem8YaGs126MiZpBA-UFVZ0b.woff2
74
75
76 To fetch the TTF from CDN:
77
78 $ curl 'https://fonts.googleapis.com/css?family=Open+Sans'
79 $ wget https://fonts.gstatic.com/s/opensans/v18/mem8YaGs126MiZpBA-UFVZ0e.ttf
80 $ woff2_compress mem8YaGs126MiZpBA-UFVZ0e.ttf
81 $ diff -s ./mem8YaGs126MiZpBA-UFVZ0e.woff2 ./mem8YaGs126MiZpBA-UFVZ0b.woff2
82
83 => The files are identical
84
85
86 As of 2020-11-19, the version of the TTF is "1.101":
87
88 $ fc-query -f '%{fontversion}\n' ./mem8YaGs126MiZpBA-UFVZ0e.ttf | \
89 grep -v 'id' | perl -E 'printf "%.3f\n", <>/65536.0'
90
91
92
93 Generation of the "./OpenSans" folder
94 -------------------------------------
95
96 $ mkdir ./OpenSans
97 $ cd ./OpenSans
98 $ REVISION=c0d8ce7dd46291a5d429ac537ddcd3617f4dc229
99 $ wget https://github.com/googlefonts/opensans/raw/master/LICENSE.txt
100 $ curl https://raw.githubusercontent.com/googlefonts/opensans/${REVISION}/ttfs/OpenSans-Regular.ttf > 2017-11-13-OpenSans-Regular.ttf
101 $ woff2_compress 2017-11-13-OpenSans-Regular.ttf
102
103 => Note that the version of the TTF font is "2.010" (so more recent
104 than the font on Google Fonts CDN)