Bug 421604

Summary:	Changing Layout.preferredWidth doesn't resize an applet
Product:	[Plasma] Plasma SDK	Reporter:	wojnilowicz <lukasz.wojnilowicz>
Component:	plasmoidviewer	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	giorgos.tsiapaliokas, kdedev
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	test case Screencast of the issue

Description wojnilowicz 2020-05-16 09:39:31 UTC

Created attachment 128504 [details]
test case

SUMMARY

I change Layout.preferredWidth of the applet dynamically at a given time interval but it apparently can't be seen when run in plasmoidviewer.

Size changes can bee seen properly though, if the applet is docked in desktop's task bar.


STEPS TO REPRODUCE
1. download and unpack my test case
2. run install-and-run-plasmoid.sh
3. plasmoidviewer should appear and org.kde.tutorial should be installed
4. add org.kde.tutorial applet to your desktop taskbar

OBSERVED RESULT
See attached video.

EXPECTED RESULT
The applet in plasmoidviewer should resize itself the same way as it resizes itself in the taskbar.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 32
KDE Plasma Version: 5.18.3
KDE Frameworks Version: 5.68
Qt Version: 5.13.2

ADDITIONAL INFORMATION
1) I read at
https://zren.github.io/kde/docs/widget/
how to emulate in plasmoidviewer, an applet in a taskbar.
2) I start my plasmoid by
plasmoidviewer --formfactor horizontal --location bottom --applet org.kde.tutorial

Comment 1 wojnilowicz 2020-05-16 09:40:21 UTC

Created attachment 128505 [details]
Screencast of the issue

Comment 2 wojnilowicz 2020-05-16 09:54:42 UTC

There is a workaround for this issue. One needs to insert
"main.parent.parent.width = widgetWidth"
in the timer's body in order to get a dynamically resizeable applet in plasmoidviewer.

Comment 3 TraceyC 2025-06-25 20:07:22 UTC

Thanks for the bug report. I'm sorry we weren't able to get to this yet. There have been many fixes and improvements since this was reported, and this issue may have been fixed.

Can you please re-test on your system with Plasma 6.4.1 or later and let us know if you can still reproduce the problem? If you can, please set this report back to REPORTED. Thanks!

Comment 4 wojnilowicz 2025-06-26 15:39:57 UTC

Unlikely. I don't use KDE anymore.

Comment 5 TraceyC 2025-06-26 17:40:33 UTC

Thanks for letting us know. I'll close this out.