During drag-motion callbacks the data to be dragged is n/a.
However we like to discriminate if drop is possible.
When dragging regions, the data-type of the region to be dragged
is unknown, so different `x-ardour/region` targets are not an
option, either.
Until a better option is presented, a static global is used
to set the data-type for region.pbdid drags.
This amends 730a0954 and b27bb586.
This also restores the original API for do_import()
and do_embed() as used by Lua scripts.
Note that this uses distinct IDs when importing both audio
and MIDI in the same DnD request.
* You can now show a selector for each track, rather than one global dialog
* Removed the 'cancel' button: it was too easy to unintentionally revert your selection
* Correctly sort and name new playlists when they are added or renamed from the P menu
* Fix problem where list contents disappeared when changing desktops (on_unmap_event)
* new global playlist functions for {all | rec-armed | selected} tracks.
* new API passes (bool copy) arg instead of separate functions for copy_X.
* consistently use mapover_X functions to consolidate code
* update Lua bindings to match
This allows to re-use playlist editing in all RouteUI derivatives,
not just the main editor time axis header.
The change is mostly a NO-OP, simply moving methods from
RouteTimeAxisView (is-a RouteUI), to RouteUI.
* Expose API via Public Editor
* Skip hidden tracks in calculation
* Use a single call to query playlist extents.
This way the playlist read-lock is needed at most once per track
which speeds up calculation.
This is in preparation to subscribe to playhead cursor position
changes in the recorder-UI.
This change also clean up the API, replacing a public variable
with a const access method and follows #12 of
https://ardour.org/styleguide.html
Existing function select-all-tracks is now renamed select-all-visible-lanes, to match its behavior.
New function select-all-tracks will select all Tracks, as the name implies.
To maintain consistency for those users who actively used select-all-tracks,
the default shortcut ctrl+t will continue calling select-all-visible-lanes.
