[jira] [Created] (NETBEANS-2360) HiDPI scaling not applied automatically on Linux

["Eirik Bakke (JIRA)" <ji...@apache.org>]

Eirik Bakke created NETBEANS-2360:
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             Summary: HiDPI scaling not applied automatically on Linux
                 Key: NETBEANS-2360
                 URL: https://issues.apache.org/jira/browse/NETBEANS-2360
             Project: NetBeans
          Issue Type: Improvement
          Components: platform - Launchers&CLI
    Affects Versions: 11.0
         Environment: Kubuntu 18.03
Oracle JDK 11.0.2
            Reporter: Eirik Bakke
         Attachments: kubunt.jpg

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 GTK_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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