I would have loved to split this apart, but there are just so many interrelated changes,
it makes little sense and would be a huge effort that would break future git bisect
use because so many intermediate commits would not compile
Key, Button and Focus In events in the editor+mixer windows cause the respective window to be noted
as the window to which focus should return after a dialog is closed with cmd/ctrl-w
GTK on OS X adds META when Command is pressed even though it also uses MOD2 to indicate COMMAND. So Cmd-w was actually META-MOD2-w and modifier_state_equals(MOD2)
would fail. This should have nothing but good side effects
This also removes Route::group_gain_control() and associated machinery.
Not yet tested with Mackie or other surfaces. More work to done to
start using the group capabilities, and also potentially to add
or derive more controls as RouteAutomationControls
This new design will work even when threads that need to receive
messages from RT threads are created *after* the RT threads. The
existing design would fail because the RT thread(s) would never
be known the later created threads, and so signals emitted by the
RT thread and causing call_slot() in the receiver would end up
being enqueued using a lock-protected list. The new design ensures
that communication always uses a lock-free FIFO instead
Not doing so can make source or object files appear multiple times in
the list of files to be compiled or linked, e.g. when doing './waf build
install', subsequently leading to linker errors.
Use gdk_pango_layout() for all text-size calculations.
In Canvas::Text always use the same context (local image surface)
for layouting (prior to this, local and window-context mix resulted in
different sizes).
