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https://issues.apache.org/jira/browse/NETBEANS-2360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17516604#comment-17516604
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Eirik Bakke commented on NETBEANS-2360:
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Hi, Javier!
As you may have noticed, Java only supports either 1x or 2x HiDPI scaling on
Linux. So the script I provided only applies the 2x scaling when the desktop's
scaling is exactly 2x (192 dots per inch). In your case it seems you have
configured a 162/96=1.6875x scaling factor? Could this be right?
Could you try setting your desktop's HiDPI scaling to exactly 200%, and then
see if the script picks up on that?
(I suppose I could change the script to scale NetBeans to 2x if the desktop's
scaling level is more than 1.5x, or perhaps some higher threshold. But I
figured it was better to let the user increase their font size instead in these
cases.)
-- Eirik
> HiDPI scaling (and anti-aliasing on KDE) not applied automatically on Linux
> ---------------------------------------------------------------------------
>
> Key: NETBEANS-2360
> URL: https://issues.apache.org/jira/browse/NETBEANS-2360
> Project: NetBeans
> Issue Type: Bug
> Components: platform - Launchers&CLI
> Affects Versions: 11.0, 12.2
> Environment: Kubuntu 18.03
> Oracle JDK 11.0.2
> Reporter: Eirik Bakke
> Priority: Major
> Labels: HiDPI, Linux, pull-request-available
> Attachments: CheckHiDpi.java, image-2021-09-12-21-01-33-807.png,
> image-2021-09-12-21-05-06-852.png, kubunt.jpg
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Running NetBeans 11 on Kubuntu 18.03, GUI text size does not seem to take
> into account the system's default HiDPI scaling. This was reported in a
> Twitter thread on https://twitter.com/nicktail/status/1114789604337405952 .
> Note that Window decorations seem to be the correct size.
> Setting the GDK_SCALE environment variable seems to fix the problem, if I
> understand the originally reporter correctly. This could probably be done
> easily from the NetBeans launcher script (netbeans/bin). But it wouldn't fix
> the problem in multi-monitor setups. We should investigate what could be done
> to make scaling work properly in multi-monitor setups involving one HiDPI
> screen and one non-HiDPI screen.
> Before merging a patch to the launcher script, it should be tested on a
> couple of different Linux environments, using both HiDPI and non-HiDPI
> screens. Note that the UNIX launcher script is also used on MacOS.
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