https://bugs.kde.org/show_bug.cgi?id=497100
Bug ID: 497100
Summary: Feature Request: Automatically clone selected panels
when connecting a new display
Classification: Plasma
Product: plasmashell
Version: master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Panel
Assignee: plasma-b...@kde.org
Reporter: maxim.kukush...@gmail.com
CC: niccolo.venera...@gmail.com
Target Milestone: 1.0
SUMMARY
When using two (or more) monitors, it is convenient to have a panel on each
monitor such that all panels are completely identical. Currently, it's either
tedious process of creating a new panel from scratch and replicating all
widgets and their settings, or (with the upcoming or just implemented change)
still a manual step of selecting a panel and cloning it.
It would be nice if cloning could be automated (see Additional Information for
a more elaborated suggestion)
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kernel 6.12.1-arch1-1
KDE Plasma Version: 6.2.4
KDE Frameworks Version: 5.116.0
Qt Version: 6.8.1
ADDITIONAL INFORMATION
This is a re-iteration of the previous feature request
(https://bugs.kde.org/show_bug.cgi?id=493195) with a different suggested
approach discussed in the comments there.
Basically, the main concern when implementing automatic cloning was the
decision making of which panels to clone and how to differentiate a new monitor
and a previous monitor (in case monitors change their IDs. Also, there was a
concern about different resolutions and aspect ratios in theory making the
cloned panel look ugly.
The suggestion in this feature request is: Always prefer user's choice and let
the user decide. If the setup didn't work nicely - it was the user's elaborate
choice anyway.
Regarding the proposed algorithm:
- Implement a panel attribute "Clone to new monitors" which is by default set
to FALSE. This ensures backward compatibility with the current behavior and no
unexpected side effects
- If the user sets this flag intentionally - they assume responsibility of
panels in theory not fitting well different resolutions
- At this point a warning can be shown to indicate possible side effects
When a monitor is connected:
- Check if the connected monitor already has any panels
- If yes -> do nothing. This monitor has been connected before, the panels have
already been cloned, or the user already customized it
- If no, check each panel to find those which have the above flag set
- If the clone flag is set -> Copy the panel to the connected monitor
This is a simple algorithm that:
- Ensures backward compatibility
- Doesn't affect existing setup and doesn't clone panels indefinitely
- Addresses automatic provisioning of a new monitor with panels
- Is flexible, cause it lets the user choose which panels to clone
automatically (maybe someone prefers to clone only one panel to extra monitors,
but have panels on the main one)
The panel configuration page can also have a question mark next to the "Clone
to new monitors" flag, to show a quick summary of the above algorithm to give
the user an idea of how it works.
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