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/*
Copyright (C) 2000-2007 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "evoral/Curve.hpp"
#include "ardour/audioregion.h"
#include "pbd/memento_command.h"
#include "region_gain_line.h"
#include "audio_region_view.h"
#include "utils.h"
#include "time_axis_view.h"
#include "editor.h"
#include "ardour/session.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
AudioRegionGainLine::AudioRegionGainLine (const string & name, Session& s, AudioRegionView& r, ArdourCanvas::Group& parent, boost::shared_ptr<AutomationList> l)
: AutomationLine (name, r.get_time_axis_view(), parent, l)
, session (s)
, rv (r)
{
// If this isn't true something is horribly wrong, and we'll get catastrophic gain values
assert(l->parameter().type() == EnvelopeAutomation);
group->raise_to_top ();
set_uses_gain_mapping (true);
terminal_points_can_slide = false;
}
void
AudioRegionGainLine::start_drag (ControlPoint* cp, nframes_t x, float fraction)
{
AutomationLine::start_drag (cp, x, fraction);
if (!rv.audio_region()->envelope_active()) {
trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), &rv.audio_region()->get_state(), 0));
rv.audio_region()->set_envelope_active(false);
}
}
// This is an extended copy from AutomationList
void
AudioRegionGainLine::remove_point (ControlPoint& cp)
{
ModelRepresentation mr;
model_representation (cp, mr);
trackview.editor().current_session()->begin_reversible_command (_("remove control point"));
XMLNode &before = alist->get_state();
if (!rv.audio_region()->envelope_active()) {
XMLNode ®ion_before = rv.audio_region()->get_state();
rv.audio_region()->set_envelope_active(true);
XMLNode ®ion_after = rv.audio_region()->get_state();
trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), ®ion_before, ®ion_after));
}
alist->erase (mr.start, mr.end);
trackview.editor().current_session()->add_command (new MementoCommand<AutomationList>(*alist.get(), &before, &alist->get_state()));
trackview.editor().current_session()->commit_reversible_command ();
trackview.editor().current_session()->set_dirty ();
}
void
AudioRegionGainLine::end_drag (ControlPoint* cp)
{
if (!rv.audio_region()->envelope_active()) {
rv.audio_region()->set_envelope_active(true);
trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), 0, &rv.audio_region()->get_state()));
}
AutomationLine::end_drag(cp);
}
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