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/*
Copyright (C) 1998-2007 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.
$Id: volume_controller.h,v 1.4 2000/05/03 15:54:21 pbd Exp $
*/
#ifndef __gtk_ardour_vol_controller_h__
#define __gtk_ardour_vol_controller_h__
#include <gtkmm/adjustment.h>
#include "gtkmm2ext/motionfeedback.h"
class VolumeController : public Gtkmm2ext::MotionFeedback
{
public:
VolumeController (Glib::RefPtr<Gdk::Pixbuf>,
boost::shared_ptr<PBD::Controllable>,
double def,
double step,
double page,
bool with_numeric = true,
int image_width = 40,
int image_height = 40,
bool linear = true);
virtual ~VolumeController () {}
static void _dB_printer (char buf[32], const boost::shared_ptr<PBD::Controllable>& adj, void* arg);
protected:
double to_control_value (double);
double to_display_value (double);
double adjust (double nominal_delta);
double display_value () const;
double control_value () const;
private:
bool _linear;
void dB_printer (char buf[32], const boost::shared_ptr<PBD::Controllable>& adj);
};
#endif // __gtk_ardour_vol_controller_h__
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