Bug 415927

Summary:	Impossible to pick a screen color on Wayland
Product:	[Applications] kcolorchooser	Reporter:	Patrick Silva <bugseforuns>
Component:	general	Assignee:	Unassigned bugs mailing-list <unassigned-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	ahiemstra, bernie, computerworm, dashonwwIII, hugo.pl, justin.zobel, nate, nortexoid, norwegian_pancakes, p.r.worrall, postix, rdieter, thebluequasar, zeskotron
Priority:	HI	Keywords:	wayland
Version:	19.12
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
URL:	https://bugreports.qt.io/browse/QTBUG-81538
See Also:	https://bugs.kde.org/show_bug.cgi?id=455545
Latest Commit:	https://invent.kde.org/qt/qt/qtbase/-/commit/2dc083df009a45c5dacfea27b0affeb85b01f847	Version Fixed In:

Description Patrick Silva 2020-01-06 13:09:31 UTC

STEPS TO REPRODUCE
1. open kcolorchooser on Wayland session
2. try to pick a screen color
3. 

OBSERVED RESULT
it's impossible to pick a screen color on Wayland

EXPECTED RESULT
we can pick a screen color on Wayland

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.17.4
KDE Frameworks Version: 5.65.0
Qt Version: 5.14.0

Comment 1 Christoph Feck 2020-01-20 12:35:45 UTC

Not sure if this can be addressed in QColorDialog. In Wayland, it is explicitely forbidden to read the screen contents. KWin offers an infrastructure for screenshot applications. I am not sure if the protocols used there use a standard that Qt could follow.

I suggest to report this to Qt developers (as a bug for QColorDialog).

Comment 2 Patrick Silva 2020-01-20 15:47:48 UTC

done
https://bugreports.qt.io/browse/QTBUG-81538

Comment 3 Patrick Silva 2020-04-06 11:27:38 UTC

*** Bug 419705 has been marked as a duplicate of this bug. ***

Comment 4 Bernie Innocenti 2022-02-20 02:17:06 UTC

*** Bug 389935 has been marked as a duplicate of this bug. ***

Comment 5 Paul Worrall 2022-03-25 09:39:35 UTC

*** Bug 450082 has been marked as a duplicate of this bug. ***

Comment 6 Patrick Silva 2022-05-15 17:28:13 UTC

*** Bug 453803 has been marked as a duplicate of this bug. ***

Comment 7 Patrick Silva 2022-06-16 21:00:54 UTC

*** Bug 455414 has been marked as a duplicate of this bug. ***

Comment 8 Paul Worrall 2022-06-21 12:52:19 UTC

The Colour Picker desktop widget works fine on Wayland, so are we sure it's valid to blame this on upstream?

Comment 9 Paul Worrall 2022-06-21 12:53:06 UTC

*** Bug 455580 has been marked as a duplicate of this bug. ***

Comment 10 Antonio Rojas 2022-09-07 09:50:32 UTC

*** Bug 458832 has been marked as a duplicate of this bug. ***

Comment 11 Zesko 2022-09-08 08:00:10 UTC

But another color picker app "kontrast" works fine in KDE Wayland. 
https://github.com/KDE/kontrast

Can you add some part of "kontrast" functions into Kcolorchooser?

Comment 12 Antonio Rojas 2022-09-08 08:49:17 UTC

Fixed now in the KDE Qt patch collection.