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https://issues.apache.org/jira/browse/FOP-3045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17469358#comment-17469358
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Stefan Knorr commented on FOP-3045:
-----------------------------------
Hi – I am on the same team as Quang, some more details.
The FOP config file we use relies on FOP's auto-detection of fonts (literally,
<fonts><auto-detect/></fonts> ). The rationale for that is to make the the
config as broadly applicable as possible and be able to deal with newly
installed/removed fonts as necessary.
The fonts we are trying to use are the TTF fonts from here:
[https://github.com/itfoundry/Poppins/releases/tag/v4.003|https://github.com/itfoundry/Poppins/releases/tag/v4.003]
(TTF, i.e. the ones that are in the nested zip file, not the TTX versions).
> Font weights are rendered wrong
> -------------------------------
>
> Key: FOP-3045
> URL: https://issues.apache.org/jira/browse/FOP-3045
> Project: FOP
> Issue Type: Bug
> Components: font/opentype, renderer/pdf
> Affects Versions: 2.6
> Environment: openSUSE Leap 15.3
> fop 2.6
> google-poppins-fonts 4.003-6.3.1
> Reporter: Quang Tran
> Priority: Major
> Attachments: poppins.fo, poppins.pdf
>
>
> The attached reproducer XLST-FO (poppins.fo) has sample text with font
> weights from 100 - 900.
> Although the font-weights 300 and 100 are substituted with the font-weight
> 200 the following font-weight 400 is being rendered much thinner.
> Snippet from output:
> ...
> {{WARNING: Font "Poppins,normal,300" not found. Substituting with
> "Poppins,normal,200".}}
> {{Jan 05, 2022 3:00:31 PM org.apache.fop.apps.FOUserAgent processEvent}}
> {{WARNING: Font "Poppins,normal,100" not found. Substituting with
> "Poppins,normal,200".}}
> {{Jan 05, 2022 3:00:31 PM org.apache.fop.apps.FOUserAgent processEvent}}
> {{WARNING: Font "Poppins,normal,900" not found. Substituting with
> "Poppins,normal,800".}}
> (Also the normal italic seems to be wrong, too. I'm not sure if it's
> correlated to this issue or another.)
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