Bug 468302 - Touch calibration functionality
Summary: Touch calibration functionality
Status: REPORTED
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (show other bugs)
Version: 5.27.2
Platform: NixOS Linux
: NOR wishlist
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-04-08 19:22 UTC by p3dimaria
Modified: 2023-04-14 23:20 UTC (History)
1 user (show)

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Description p3dimaria 2023-04-08 19:22:06 UTC
SUMMARY
It would be nice if KDE added a menu to calibrate touch screen, as right now it is only possible on xorg.
This would also allow the usage of external touch screens on wayland, by calibrating the touch area to the actual touch screen instead of the entire screen
Comment 1 Nate Graham 2023-04-10 18:02:03 UTC
What does "calibration" mean in this context? Can you explain the use case?
Comment 2 p3dimaria 2023-04-11 09:08:18 UTC
I want to use an external touch screen while on wayland without having to mirror or  turn off my main monitor, but while it works fine as external monitor as soon as I touch it the touch event goes in a completely different position,often on a completely different monitor.

I think that with a calibration feature the touch area can be set to the external touch screen area allowing usable touch events
Comment 3 Nate Graham 2023-04-11 17:19:06 UTC
Is your external touch screen also a screen? Or does it just handle touch events without displaying any visuals?

In other words, is it more like a graphics tablet?
Comment 4 p3dimaria 2023-04-12 10:25:39 UTC
(In reply to Nate Graham from comment #3)
> Is your external touch screen also a screen? Or does it just handle touch
> events without displaying any visuals?
> 
> In other words, is it more like a graphics tablet?

Yes it is a screen too.
Comment 5 Nate Graham 2023-04-13 16:20:20 UTC
So you want to use an external screen that also has touch functionality as if it were purely an input device, and not use it as an output device at all?
Comment 6 p3dimaria 2023-04-14 23:13:18 UTC
On 13/04/23 18:20, "Nate Graham" <bugzilla_noreply@kde.org> wrote:
> https://bugs.kde.org/show_bug.cgi?id=468302
> 
> --- Comment #5 from Nate Graham <nate@kde.org> ---
> So you want to use an external screen that also has touch functionality as if
> it were purely an input device, and not use it as an output device at all?
> 
> 

No I want the screen output intact and the touch input to correspond to that output
Comment 7 Nate Graham 2023-04-14 23:20:43 UTC
So when you touch something on the external touch screen, you want to use it as an actual screen that you can touch, and you want your touches on that screen to interact with the apps and windows moved onto the screen?