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livetrax/libs/surfaces/maschine2/ui_knob.h

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C++

/*
* Copyright (C) 2016 Robin Gareus <robin@gareus.org>
*
* 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _ardour_maschine2_knob_h_
#define _ardour_maschine2_knob_h_
#include <boost/shared_ptr.hpp>
#include <sigc++/trackable.h>
#include <cairomm/refptr.h>
#include "pbd/signals.h"
#include "canvas/container.h"
namespace ArdourCanvas {
class Text;
}
namespace ARDOUR {
class AutomationControl;
}
namespace Cairo {
class Context;
class Region;
}
namespace ArdourSurface {
class Maschine2;
class M2EncoderInterface;
class Maschine2Knob : public sigc::trackable, public ArdourCanvas::Container
{
public:
Maschine2Knob (PBD::EventLoop*, ArdourCanvas::Item*);
virtual ~Maschine2Knob ();
void set_controllable (boost::shared_ptr<ARDOUR::AutomationControl>);
void set_control (M2EncoderInterface*);
boost::shared_ptr<ARDOUR::AutomationControl> controllable() const { return _controllable; }
void render (ArdourCanvas::Rect const &, Cairo::RefPtr<Cairo::Context>) const;
void compute_bounding_box() const;
protected:
void controllable_changed ();
void encoder_changed (int);
PBD::ScopedConnection watch_connection;
PBD::ScopedConnection encoder_connection;
boost::shared_ptr<ARDOUR::AutomationControl> _controllable;
M2EncoderInterface* _ctrl;
private:
PBD::EventLoop* _eventloop;
float _radius;
float _val; // current value [0..1]
float _normal; // default value, arc
ArdourCanvas::Text* text;
};
} // namespace
#endif