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region_gain_line.h

/*
    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.

*/

#ifndef __ardour_gtk_region_gain_line_h__
#define __ardour_gtk_region_gain_line_h__

#include <ardour/ardour.h>
#include <libgnomecanvasmm.h>

#include "automation_line.h"

namespace ARDOUR {
      class Session;
}

class TimeAxisView;
class AudioRegionView;

class AudioRegionGainLine : public AutomationLine
{
  public:
  AudioRegionGainLine (const string & name, ARDOUR::Session&, AudioRegionView&, ArdourCanvas::Group& parent, ARDOUR::Curve&);
      
      void view_to_model_y (double&);
      void model_to_view_y (double&);

      void start_drag (ControlPoint*, nframes_t x, float fraction);
      void end_drag (ControlPoint*);

      void remove_point (ControlPoint&);


  private:
      ARDOUR::Session& session;
      AudioRegionView& rv;
};


#endif /* __ardour_gtk_region_gain_line_h__ */

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