OpenJFX: Follow HiDPI Scaling Settings in Fedora Workstation 32 (Gnome)

[Kevin Rushforth]

On 6/18/2020 9:26 AM, Philip Race wrote:
> Although we only support integer scaling on Linux you have 200% which 
> should work.
> So sounds like it could be a breaking change in Fedora, where it 
> passes around / defines
> the scale in some new setting and doesn't set the old ones needed for 
> compatibility.

That could be.

>>  (either via gsettings or the GDI_SCALE env variable)
>
> GDK_SCALE, not GDI_SCALE

Oops. :)  Of course.

-- Kevin


>
> -phil
>
>
>
> On 6/18/20, 5:12 AM, Kevin Rushforth wrote:
>> We will need a new bug ID for this (we never reuse a bug ID for which 
>> a commit has been pushed). You can file a new bug, mentioning 
>> JDK-8137050 in the Description, at:
>>
>> https://bugreport.java.com/
>>
>> Question for other Linux users on this list: are any of you using a 
>> Linux machine with Hi-DPI scaling? Is it detecting it properly or do 
>> you have to set the scaling property (either via gsettings or the 
>> GDI_SCALE env variable)  yourself?
>>
>> -- Kevin
>>
>>
>> On 6/18/2020 1:51 AM, wurstsemmel at mailbox.org wrote:
>>> Dear OpenJFX Developers,
>>>
>>> on Fedora 32 Workstation (Gnome) the AppImage from Cryptomator
>>> (cryptomator.org) does not follow the system-wide scale settings from
>>> Gnome Settings.
>>>
>>> *System Setup
>>> Linux: Fedora Workstation 32 (Gnome)
>>> Hardware: Dell XPS 13 with HiDPI (200 % scaling)
>>> Cryptomator version: 1.5.5-x86_64 AppImage
>>>
>>> *Expected Behavior
>>> App window should scale according to system-wide settings.
>>>
>>> *Actual Behavior
>>> App window scales at 100 %.
>>>
>>> *Two workarounds exist:
>>> $gsettings set org.gnome.desktop.interface scaling-factor 2
>>> $GDK_SCALE=2 ./cryptomator-1.5.5-x86_64.AppImage
>>>
>>> According to the developers from Cryptomator (see
>>> https://github.com/cryptomator/cryptomator/issues/1242#issuecomment-643095195 
>>>
>>> ) this is a bug which was intended to be fixed with
>>> https://bugs.openjdk.java.net/browse/JDK-8137050. However, the bug
>>> still occurs in OpenJFX 14.0.1 and 11.
>>>
>>> I am happy to help if anything is unclear. Please re-open the bug JDK-
>>> 8137050 and make OpenJFX follow the system-wide scaling settings in
>>> Gnome.
>>>
>>> Thank you!
>>>
>>> wurstsemmel
>>>
>>>
>>>
>>>
>>>
>>