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/*
Copyright (C) 2010 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 __gtk_ardour_stereo_panner_h__
#define __gtk_ardour_stereo_panner_h__
#include "pbd/signals.h"
#include <gtkmm/drawingarea.h>
#include <boost/shared_ptr.hpp>
#include "gtkmm2ext/binding_proxy.h"
namespace PBD {
class Controllable;
}
class StereoPanner : public Gtk::DrawingArea
{
public:
StereoPanner (boost::shared_ptr<PBD::Controllable> pos, boost::shared_ptr<PBD::Controllable> width);
~StereoPanner ();
protected:
bool on_expose_event (GdkEventExpose*);
bool on_button_press_event (GdkEventButton*);
bool on_button_release_event (GdkEventButton*);
bool on_motion_notify_event (GdkEventMotion*);
bool on_scroll_event (GdkEventScroll*);
bool on_key_press_event (GdkEventKey*);
bool on_key_release_event (GdkEventKey*);
bool on_enter_notify_event (GdkEventCrossing* ev);
bool on_leave_notify_event (GdkEventCrossing* ev);
private:
boost::shared_ptr<PBD::Controllable> position_control;
boost::shared_ptr<PBD::Controllable> width_control;
PBD::ScopedConnectionList connections;
bool dragging;
bool dragging_position;
bool dragging_left;
bool dragging_right;
int drag_start_x;
int last_drag_x;
double accumulated_delta;
bool detented;
Gtk::Window* drag_data_window;
Gtk::Label* drag_data_label;
BindingProxy position_binder;
BindingProxy width_binder;
void value_change ();
void set_drag_data ();
void set_tooltip ();
void unset_tooltip ();
struct ColorScheme {
uint32_t outline;
uint32_t fill;
uint32_t text;
uint32_t background;
};
enum State {
Normal,
Mono,
Inverted
};
static ColorScheme colors[3];
static void set_colors ();
static bool have_colors;
static PBD::Signal0<void> color_change;
};
#endif /* __gtk_ardour_stereo_panner_h__ */
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