https://bugs.documentfoundation.org/show_bug.cgi?id=112805
Bug ID: 112805
Summary: Support for "size" (optical size) OpenType table
Product: LibreOffice
Version: 5.4.1.2 release
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: enhancement
Priority: medium
Component: LibreOffice
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: rgb.m...@gmail.com
Created attachment 136670
--> https://bugs.documentfoundation.org/attachment.cgi?id=136670&action=edit
Character properties for Coelacanth font
There are fonts like Latin Modern(1) or the still in development Coelacanth(2)
that offers "optical sizes"(3): variants of the font designed to be used for
different point sizes (broader, less detailed for small point sizes, taller and
with higher contrast for big headings).
This feature is governed by the "size" OpenType table. Systems like XeTeX
automatically pick the right font file to be used on the appropriate size, but
it seems that LibreOffice gets confused by that table: not only it do not
switch between variants, it's not even possible to select which variant is
being used as you can see on the attached screenshot. In fact Coelacanth
consist of 37 font files tied together by the "size" OT feature, but LibO only
offers a small and rather arbitrary selection.
------
(1) http://www.gust.org.pl/projects/e-foundry/latin-modern/download
(2) https://github.com/Fuzzypeg/Coelacanth
(3) https://en.wikipedia.org/wiki/Font#Optical_size
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