* in the case where there are no existing automation points, then
initiating an automation range drag (select range, switch to Draw)
should initialize the line at the current knob position
Stem-export defaults to use selected tracks. This retains
the selection, so focus remains. Repeat stem export will use
previously exported tracks if the selection is empty, or the
current selection (again).
citations are needed to explain when&how this is useful
the definition of Ripple is "accommodate cut/insert/moves by moving all
regions to the 'right' (later) of the operation by the same amount".
moving markers to the 'left' of the grabbed_region explicitly breaks the
definition of ripple. it makes documentation hard.
furthermore, in a more complicated session with multiple tracks, this behavior
ignores the regions on other tracks and the markers that still might be
associated with them (consider the case where you move the first region
on track A but there are many prior regions on track B with markers over
them)
The state was inconsistent after using the "All" buttons, causing
confusing behaviour. Most visibly, the message "No timespan has been
selected!" message and the disabling of the "Export" button were not
cleared.
Fixed by making
ExportTimespanSelector::set_selection_state_of_all_timespans call
update_timespans and CriticalSelectionChanged , like for example
ExportTimespanSelector::update_range_name and
ExportTimespanSelectorMultiple::update_selection do.
this prevents the case where have enabled snap, and you add a note that
appears to be on a bar line. but actually it is {some Grid value} off,
it just looks right because of pixel rounding.
This fixes the issue where you click to create a note, but move the mouse
just a little, resulting in a note of invisibly small length
Do the calculation in ::motion so it displays the final
size while you are dragging. "what you see is what you will get"
* move abort_reversible_command into the correct bracketed location
* check for missing _session at top of function to avoid unnecessary nesting
* this fixes an undo 'assert' when an action like "clear xrun markers" has no effect
* this was likely a copy+paste thinko since they are adjacent in the code
these functions operate on the _note_diff_command,
which is explicitly a NoteDiff, not a generic DiffCommand
also fix a few thinkos where the ambiguous naming led to errors
