> We already track overlapping clips having the same priority. At the
> moment
> when we detect overlaps (a gap has duration < 0), we rearrange clips
> so that they never overlap.
>
> MoveContext.finish() in pitivi/timeline/timeline.py uses the gap code
> and
> implements the logic to avoid gaps while moving clips. Take a look at
> that it's pretty simple.
>From what I understand, this would mean that you wouldn't see the
transition area appearing "live" while you drag the clips to overlap,
only when you release the mouse button will it show. From a technical
standpoint it makes sense and is probably much easier to implement.
It's just that "ideally", in a perfect world, it would be nicer to be
able to see the transition area form (or opacity keyframes move around
into place) as you drag, however. I think this was what caused Brandon
some headaches (detecting collisions "in real time" :)
(demonstration in comment #1 of
https://bugzilla.gnome.org/show_bug.cgi?id=579230 )
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