2 Copyright (C) 2010-2011 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __libardour_proxy_controllable_h__
21 #define __libardour_proxy_controllable_h__
23 #include <boost/function.hpp>
25 #include "pbd/controllable.h"
29 /** this class converts a pair of setter/getter functors into a Controllable
30 so that it can be used like a regular Controllable, bound to MIDI, OSC etc.
33 class LIBARDOUR_API ProxyControllable : public PBD::Controllable {
35 ProxyControllable (const std::string& name, PBD::Controllable::Flag flags,
36 boost::function1<bool,double> setter,
37 boost::function0<double> getter)
38 : PBD::Controllable (name, flags)
43 void set_value (double v, PBD::Controllable::GroupControlDisposition gcd) { if (_setter (v)) { Changed (true, gcd); /* EMIT SIGNAL */ } }
44 double get_value () const { return _getter (); }
46 double internal_to_user (double i) const { return accurate_coefficient_to_dB (i);}
47 double user_to_internal (double u) const { return dB_to_coefficient(u) ;}
49 std::string get_user_string () const {
50 char theBuf[32]; sprintf( theBuf, "%3.1f dB", accurate_coefficient_to_dB (get_value()));
51 return std::string(theBuf);
55 boost::function1<bool,double> _setter;
56 boost::function0<double> _getter;
61 #endif /* __libardour_proxy_controllable_h__ */