59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
/*
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* Copyright (C) 2011-2014 David Robillard <d@drobilla.net>
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* Copyright (C) 2011-2016 Paul Davis <paul@linuxaudiosystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __libardour_proxy_controllable_h__
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#define __libardour_proxy_controllable_h__
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#include <boost/function.hpp>
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#include "pbd/controllable.h"
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namespace ARDOUR {
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/** this class converts a pair of setter/getter functors into a Controllable
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so that it can be used like a regular Controllable, bound to MIDI, OSC etc.
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*/
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class LIBARDOUR_API ProxyControllable : public PBD::Controllable {
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public:
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ProxyControllable (const std::string& name, PBD::Controllable::Flag flags,
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boost::function1<bool,double> setter,
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boost::function0<double> getter)
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: PBD::Controllable (name, flags)
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, _setter (setter)
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, _getter (getter)
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{}
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void set_value (double v, PBD::Controllable::GroupControlDisposition gcd) { if (_setter (v)) { Changed (true, gcd); /* EMIT SIGNAL */ } }
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double get_value () const { return _getter (); }
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std::string get_user_string () const {
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char theBuf[32]; sprintf( theBuf, "%3.1f dB", accurate_coefficient_to_dB (get_value()));
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return std::string(theBuf);
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}
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private:
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boost::function1<bool,double> _setter;
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boost::function0<double> _getter;
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};
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} // namespace
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#endif /* __libardour_proxy_controllable_h__ */
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