Public bug reported:
Steps to Reproduce:
1. Modify the global theme layout in
`/usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/layouts/org.kde.plasma.desktop-layout.js`.
Use Plasma workspace scripting to add widgets to the desktop. In my case I
used `org.kde.plasma.icon` which references a desktop file from
`/usr/share/applications/firefox.desktop`, for example.
2. Select the Breeze them in System Settings > Colors & Themes > Breeze and
agree to apply `[x] Appearance settings` AND `[x] Desktop and windows layout`,
then apply
Observed Results:
Only the icons appear. The Panel at the bottom does not show.
Expected Results:
The panel and the icons should show.
Analysis:
1. No matter how you add the panel and widgets to the desktop, the panel always
disappears. It isn't hidden, and it isn't gone.
2. Instead, the panel exist but is assigned to screen -1. This is confirmed by
interrogating the object in the `plasma-interactiveconsole`:
const panel_list = panels();
print( 'Panel Count is ' + panel_list.length + '\n' );
if ( panel_list.length === 1 ) {
const panel_obj = panel_list[0];
print( panel_obj.screen + '\n' );
panel_obj.screen = 0;
}
3. Applying `panel_obj.screen = 0` does NOT fix the issue, and on re-run, the
value is reverted to -1.
4. The only 100% reliable solution is to add a junk panel, then delete it. The
original panel then reappears.
const panel_junk_obj = new Panel;
panel_junk_obj.remove();
5. Unfortunately, the add-a-junk-panel trick only works AFTER a layout
is applied from the theme, and run in the interactive console. I expect
it would also work with a script triggered through qdbus6.
6. I attempted to apply the theme with one big serialized object that
included the panel and widgets all at once. This did not affect the fix
the behavior; the panel remains on screen -1 as described above.
(This is copied from this KDE bug comment by Michael Mikowski:
https://bugs.kde.org/show_bug.cgi?id=512005#c14)
** Affects: libplasma (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2153448
Title:
Layout use of addWidget nullifies defined panel
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