Re: [Audacity-quality] Time track copy-paste and aup3 import

[Peter S. <pet...@gm...>]

On Sat, Jan 30, 2021 at 3:52 PM Paul Licameli <pau...@gm...>
wrote:

> James, please review these details.  Peter, maybe generate some bug issues.
>
> How does copy and paste of time track work, and how should it?
>
> Short answer:  you can copy and paste time track points, even into a
> project with an existing time track, though not all the behavior is
> intuitive.
>
> Question:  If you import an .aup3 project with a time track, should that
> do the same as paste (pasting at time 0 and shifting other control points
> right), or should it replace the old time track with a new one (but maybe
> losing some of your data)?  James argues for the second solution, I'm not
> sure I agree.
>

Behavior looks most odd to me - and it's easy to produce dis-joints in the
Time Track

I'm not sure that you should be able to edit a tine track with cut &
pasts      :-//

Peter.



> We need agreement on that to commit simplified code for aup3 import,
> reducing the amount of sqlite3 calls we need to maintain.
>
> Details.
>
>
>    1. Make new project with a time track and some control points, and
>    some generated sound
>    2. Select all Ctrl + A
>    3. Select time track and deselect wave track with Ctrl + click
>    4. Try to copy - dialog box tells you to select some audio
>
> That has been so at least since 2.3.1:  You can't copy if only time track
> is selected.
>
> But, if time track is selected and another track -- then is it copied to
> clipboard?  Since at least 2.3.1, yes, because then pasting into another
> project makes a time track.  So a time track IS copyable.
>
> But in 2.3.1, the time track points were lost.  2.3.2 changed that.  Time
> track points may be inserted into a time track that already exists and has
> other points.  There may be discontinuities at the edges of the paste,
> arguably correct or not.
>
> I also notice that if you have cut time & wave tracks, then paste into a
> new project with only a time track -- then, whether the wave track pastes
> or not, depends whether the time track is selected or not.  If it was, I
> only paste time track.  Undo, click background, paste -- then both paste.
>
>
>
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