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/*
Copyright (C) 2014 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 __gtk2_ardour_ardour_knob_h__
#define __gtk2_ardour_ardour_knob_h__
#include <list>
#include <stdint.h>
#include <gtkmm/action.h>
#include "pbd/signals.h"
#include "ardour/automatable.h"
#include "gtkmm2ext/binding_proxy.h"
#include "gtkmm2ext/activatable.h"
#include "gtkmm2ext/cairo_widget.h"
#include "gtkmm2ext/persistent_tooltip.h"
class KnobPersistentTooltip : public Gtkmm2ext::PersistentTooltip
{
public:
KnobPersistentTooltip (Gtk::Widget* w);
void start_drag ();
void stop_drag ();
bool dragging () const;
private:
bool _dragging;
};
class ArdourKnob : public CairoWidget , public Gtkmm2ext::Activatable
{
public:
enum Element {
Arc = 0x1,
Bevel = 0x2,
unused2 = 0x4,
unused3 = 0x8,
unused4 = 0x10,
unused5 = 0x20,
};
enum Flags {
NoFlags = 0,
Detent = 0x1,
ArcToZero = 0x2,
};
ArdourKnob (Element e = default_elements, Flags flags = NoFlags);
virtual ~ArdourKnob ();
void set_active_state (Gtkmm2ext::ActiveState);
void set_visual_state (Gtkmm2ext::VisualState);
Element elements() const { return _elements; }
void set_elements (Element);
void add_elements (Element);
static Element default_elements;
void set_tooltip_prefix (std::string pfx) { _tooltip_prefix = pfx; controllable_changed (true); }
boost::shared_ptr<PBD::Controllable> get_controllable() { return binding_proxy.get_controllable(); }
void set_controllable (boost::shared_ptr<PBD::Controllable> c);
bool on_button_press_event (GdkEventButton*);
bool on_button_release_event (GdkEventButton*);
bool on_scroll_event (GdkEventScroll* ev);
bool on_motion_notify_event (GdkEventMotion *ev) ;
void color_handler ();
protected:
void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
void on_size_request (Gtk::Requisition* req);
void on_size_allocate (Gtk::Allocation&);
void on_style_changed (const Glib::RefPtr<Gtk::Style>&);
void on_name_changed ();
bool on_enter_notify_event (GdkEventCrossing*);
bool on_leave_notify_event (GdkEventCrossing*);
bool on_focus_in_event (GdkEventFocus*);
bool on_focus_out_event (GdkEventFocus*);
void controllable_changed (bool force_update = false);
PBD::ScopedConnection watch_connection;
private:
Element _elements;
BindingProxy binding_proxy;
bool _hovering;
float _grabbed_x;
float _grabbed_y;
float _val; // current value [0..1]
float _normal; // default value, arc
float _dead_zone_delta;
Flags _flags;
void action_sensitivity_changed ();
void action_visibility_changed ();
void action_tooltip_changed ();
std::string _tooltip_prefix;
KnobPersistentTooltip _tooltip;
};
#endif /* __gtk2_ardour_ardour_knob_h__ */
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