[Octave-bug-tracker] [bug #53276] GUI: undocked panes cannot be moved, or resized along upper border

[Dan Sebald]

Follow-up Comment #17, bug #53276 (project octave):

OK, thanks folks.  Please wait until the weekend to test Philip.  I understand
the issue now, which is the loss of the Window-Manager decorations when
unparenting and custom title bar.  Cinnamon has its idiosyncrasies as well, as
it depends on the sequence of doing those two operations when I try a few
things.

Torsten, that is what I'm seeing too.  The innermost title bar you noted is
Octave's custom title bar, but technically is just a widget inside a
QVBoxLayout.  The second inner bar is the QDockWidget title bar...which
actually doesn't act like a title bar anymore because one can't drag the
window from it.

I think I can devise a simple setup that doesn't use unparenting, but instead
overlays a normal QWidget Qt::Window on top of the QDockWidget and moves the
custom title bar from one to the other based upon whether it is docked or
undocked.  We'll see how that goes.

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