- this helps where tempo and meter have a somewhat circular
dependency.
MetricSection now has a musical position expressed in beats (a double).
MeterSection still has a bbt, but it really isn't needed as we have
enough information to discover the number of bars at a given beat without it.
TempoSection now has a hack to enable loading of legacy sessions, which will
ultimately be a lot cleaner than the current code.
Removing bars from tempo sections also allows us to place them
at arbitrary frames (implemented here).
Replaces the list of points in TempoMap with TempoSection functions, which
compute tempo-at or tick-at time relative to tempo section start.
TempoMap consults them additively to determine things like bbt_time(),
frame_time() get_grid() etc.
This has a marked effect on scrolling speed along with the code simplification
in the places it has been attempted.
Several things are broken here.
Currently every ramp except the last one is an exponential ramp. this may
be simple to fix :).
Mouse-over midi grid doesn't match mouse click grid. should also be simple.
Many things seem to work, but their accuracy should be in question until
each area has been addressed.
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
- add_midi_region used to commit, resulting in
_region->set_position() adding a command when there was
no current transaction. The sub-bug here was that repeatedly
calling set_position() on the new region resulted in nonsensical
automation movement after the drag.
- removes the need for 'pixel hunting' wrt NAME_HIGHLIGHT_SIZE.
- new control points generated by clicking on a line are placed
where the verbose canvas cursor says they are.
- disallow simultaneous events via ControlList::editor_add ()
- clicking on an automation line selects the points that define it.
- don't 'flash' a region selection when using mousedraw mode.
- cp click selection resembles region selection.
- region gain points respect snap modifier (a la automation points).
previously if some audio region was locked and locked to video,
the audio-region always stayed put and the video could only be
moved forward.
TODO: add an "unlock all" option.
