Multi monitor HIDPI in X11 compatibility mode
nikita.gubarkov at jetbrains.com
Mon Feb 13 21:23:36 UTC 2023
It doesn't require Wayland in order to run as before,
but if Wayland is available at runtime (dlsym), it will use it to get
AFAIU mainline currently mostly works with XWayland, right?
If so, probably this can even help the mainline, not only sandbox?
And yes, it still reports integer scales, I didn't find a way to get
Wayland protocol itself has only integer wl_output::scale.
On Fri, Feb 10, 2023 at 10:48 PM Philip Race <philip.race at oracle.com> wrote:
> If it needs Wayland, then it might be something that should go into the
> for the Wakefield project ... perhaps that is what you are intending here ?
> Until that project adds support back into main line for Wayland's X11
> mode we only support running on X.org, so there won't be a wayland
> server to query,
> so this fix can't help mainline today.
> I presume this code would still report integer scales ?
> My understanding is Wayland by design does not support fractional scales.
> On 2/2/23 2:47 PM, Nikita Gubarkov wrote:
> > JetBrains Runtime has support for per-monitor scaling in X11 mode
> > implemented a few months ago.
> > At first I tried to use the GTK library for reading the scales as
> > suggested in https://bugs.openjdk.org/browse/JDK-8260270, but in a
> > multi-monitor environment it is always returning scale of the main
> > display when running with X11 backend.
> > The final solution was to connect to Wayland just to read the scaling
> > values and then do a huge refactoring to make AWT's X11-related code
> > respect these individual scaling values.
> > For coordinate conversions I took the same approach that was used in
> > Windows - https://github.com/openjdk/jdk/pull/375
> > There were some issues that I was unable to solve, like the window
> > title bar is always scaled with the main monitor's scale no matter
> > what monitor the window is on, the same with mouse cursor when it's
> > over the window, but overall it seems to work.
> > I can try porting this into OpenJDK and create a PR if needed.
> > JBR issue: https://youtrack.jetbrains.com/issue/JBR-5208
> > Code:
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