* Consolidate access modifiers
* Remove all public member variables
* Only expose required functions, use private
whenever possible
* Rename private members, prefix underscore
* Remove cruft
This follows a special case in PortGroupList::gather().
The Virtual Keyboard is an Ardour owned async terminal port,
that is in a session bundle (not a UserBundle).
See also 728d2a3771 and 559ffcff63
Simply removing the items from the rec_mon_table still leaves
a space since the table itself is still packed and the
global-vpacker uses a spacing of 2px.
So the rec-mon table has to be unpacked. explicit hide/show
calls in set_route() are also not helpful since the widget is
managed by a VisibilityGroup.
On tracks the bottom row of each mixer-strip has three buttons.
Two are provided by the gain-meter (automation, meter-point),
and the size of those is set in GainMeterBase (current 15x15px).
The track-group button size was left unspecified.
The master-bus only has the gain-meter buttons, and hence was
less tall compared to tracks.
This is an effective NO-OP
* Some methods have been re-named to improve consistency
* Duplicate function calls were removed:
RouteUI::set_route() already updates mute/solo
MixerStrip does not have to update it again
* virtual methods have been protected
This is required to toggle the strip to revert from aux-view
to the main route using the aux-send processor itself.
Discuss:
Perhaps this should be reverted, and ProcessorBox::edit_aux_send()
be removed: It is currently possible to create various
inconsistent mixer-states.
* use "Aux" on a Bus, then double-click some Internal-Send to
revert strips. But Aux remains active
* Removing sends while "Aux" is active does not disable Aux.
If the processor box was insensitive those issues won't be present.
However it is convenient to use double-click on the editor-mixer to
access a send's panner ...
* Use a single method to set mixer-strip widget sensitivity
* Update context-menu to only allow show actions that can
currently be performed, depending on active/inactive state.
* Mark all control elements of in-active strips as insenstive
except those required to re-enable the route.
* Also update processor-box and solo-button when showing Aux
Special case Mixbus. Mixbus already shows a "Insensitive" label,
and Mixbus-channelstrip element sensitivity remains to be
implemented before using this mechanism.
