Bug 2223938 - Qt 6 render the Bold style CJK character very thick with Noto CJK variable fonts
Summary: Qt 6 render the Bold style CJK character very thick with Noto CJK variable fonts
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: qt6-qtbase
Version: 38
Hardware: Unspecified
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Jan Grulich
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-07-19 10:30 UTC by Lee Dan
Modified: 2024-05-28 13:32 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2024-05-28 13:32:52 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
Screenshot of the bold style Chinese text (31.04 KB, image/png)
2023-07-19 10:33 UTC, Lee Dan
no flags Details

Description Lee Dan 2023-07-19 10:30:57 UTC
Qt 6 has the same variable fonts render problem as fixed in Qt 5 month ago, ref https://bugzilla.redhat.com/show_bug.cgi?id=2179854

Reproducible: Always

Steps to Reproduce:
1.update fedora 38 to latest version to install Noto CJK VF fonts
2.Switch desktop to use Chinese locale or set LANG and LC_ALL to use Chinese locale
3.Install and Launch mediawriter, and the "选择源镜像" text becomes very thick
Actual Results:  
The rendering result is thicker than the normal Noto CJK fonts, and hard to read.

Expected Results:  
The rendering result is the same as the normal Noto CJK fonts.

problem found in telegram-desktop from rpmfusion, and then confirmed in fedora media writer from system.

the patch from 2179854, may be applied to Qt 6 with minor fix, for relative files just moved to src/gui/text and relative logic unmodified.

Comment 1 Lee Dan 2023-07-19 10:33:44 UTC
Created attachment 1976477 [details]
Screenshot of the bold style Chinese text

Comment 2 Aoife Moloney 2024-05-28 13:32:52 UTC
Fedora Linux 38 entered end-of-life (EOL) status on 2024-05-21.

Fedora Linux 38 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

If you can reproduce this bug against a currently maintained version of Fedora Linux
please feel free to reopen this bug against that version. Note that the version
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