Much like the edit-tool and grid-types, clock-modes are UI state.
Saving the UI state separately allows them to be used
consistently for new sessions. Previously clock-modes were set
initially (at application start) and when loading sessions.
The clock modes of newly created sessions was different
depending on loading another session prior to creating the
session. This is now no longer the case.
These were preventing Ardour from compiling on Windows (Clang or MSVC)
Possibly would've been buildable with MinGW but I don't have that available to test.
Region actions are generally set insensitive whilst recording, so
special-case the "add-region-cue-marker" action by explicitly enabling it
when starting to roll in record. Additionally, the action becomes disabled
again after it's been executed, so re-enable it after queuing the cue when
recording.
When loading the very first session is canceled (e.g.
sample-rate mismatch -> Do not load session) or fails otherwise,
execution returns to the startupFSM.
Loading another session after that then takes the same path again:
StartupFSM::dialog_response_handler() -> StartupFSM::engine_running()
-> ARDOUR_UI::attach_to_engine()
The call needs to be idempotent, otherwise setup_windows(),
create_editor() etc are called a second time and Ardour crashes.
* Fix demo-session glob (missing "*" + session_archive_suffix)
* Copy demo-session also when copying settings from older version
* Also add demo-session to recent-list if it was previously unpacked
for new major versions.
The "ask about deletion" dialog will run a recursive main loop
which will call idle handlers, which could call the visual change
handler if the playhead is rolling. VTL is assumed to stoll
exist when this is called
* remember window visibility, size and position
* Show as toggle in the window-menu (rather than show action)
* reduce specialization, use WM and ArdourWindow infrastructure
(transient parent, window-type, etc)
This handles an edge-case in case the message arrives
before the UI is up, there is still a message printed,
before Ardour crashes (e.g. when setup_windows() fails).
