ardour/livetrax
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Hopefully further improve the autoscroll on trim drag.

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git-svn-id: svn://localhost/ardour2/branches/3.0@6500 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Carl Hetherington 2010-01-15 23:19:46 +00:00
parent 722a489fd1
commit c22c3fc31e
1 changed files with 24 additions and 9 deletions
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33
gtk2_ardour/editor_drag.cc
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@ -1897,16 +1897,31 @@ TrimDrag::aborted ()
pair<nframes64_t, nframes64_t>
TrimDrag::extent () const
{
pair<nframes64_t, nframes64_t> e = make_pair (INT64_MAX, 0);
for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
boost::shared_ptr<Region> r = (*i)->region ();
pair<nframes64_t, nframes64_t> const t = make_pair (r->position(), r->position() + r->length ());
e.first = min (e.first, t.first);
e.second = max (e.second, t.second);
}
/* we only want to autoscroll to keep the most `outward' region edge on-screen,
not the whole region(s) that is/are being trimmed.
*/
return e;
nframes64_t f = 0;
switch (_operation) {
case StartTrim:
f = INT64_MAX;
for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
f = min (f, (nframes64_t) (*i)->region()->position());
}
break;
case ContentsTrim:
f = adjusted_current_frame (0);
break;
case EndTrim:
f = 0;
for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
f = max (f, (nframes64_t) (*i)->region()->position() + (*i)->region()->length());
}
break;
}
return make_pair (f, f);
}