panner2d.h

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/*
 * Copyright (C) 2005-2014 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2005 Taybin Rutkin <taybin@taybin.com>
 * Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2009-2011 David Robillard <d@drobilla.net>
 * Copyright (C) 2014-2015 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 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef __ardour_panner_2d_h__
#define __ardour_panner_2d_h__
 
#include <sys/types.h>
#include <map>
#include <vector>
 
#include <glibmm/refptr.h>
#include <gtkmm/drawingarea.h>
#include <gtkmm/window.h>
#include <gtkmm/box.h>
#include <gtkmm/button.h>
#include <gtkmm/spinbutton.h>
#include <gtkmm/adjustment.h>
 
#include "pbd/cartesian.h"
 
#include "ardour_window.h"
 
namespace ARDOUR {
        class PannerShell;
}
 
namespace Gtk {
        class Menu;
        class CheckMenuItem;
}
 
class Panner2dWindow;
 
class Panner2d : public Gtk::DrawingArea
{
        public:
        Panner2d (std::shared_ptr<ARDOUR::PannerShell>, int32_t height);
        ~Panner2d ();
 
        void allow_target_motion (bool);
 
        int  add_speaker (const PBD::AngularVector&);
        int  add_signal (const char* text, const PBD::AngularVector&);
        void move_signal (int which, const PBD::AngularVector&);
        void reset (uint32_t n_inputs);
        void set_send_drawing_mode (bool);
 
        std::shared_ptr<ARDOUR::PannerShell> get_panner_shell() const { return panner_shell; }
 
        void cart_to_gtk (PBD::CartesianVector&) const;
        void gtk_to_cart (PBD::CartesianVector&) const;
 
        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 *);
        void on_size_allocate (Gtk::Allocation& alloc);
 
        private:
        class Target {
                public:
                PBD::AngularVector position;
                bool visible;
                std::string text;
 
                Target (const PBD::AngularVector&, const char* txt = 0);
                ~Target ();
 
                void set_text (const char*);
                void set_selected (bool yn) {
                        _selected = yn;
                }
                bool selected() const {
                        return _selected;
                }
 
                private:
                bool _selected;
        };
 
        struct ColorScheme {
                uint32_t background;
                uint32_t crosshairs;
                uint32_t signalcircle_border;
                uint32_t signalcircle;
                uint32_t diffusion;
                uint32_t diffusion_inv;
                uint32_t pos_outline;
                uint32_t pos_fill;
                uint32_t signal_outline;
                uint32_t signal_fill;
                uint32_t speaker_fill;
                uint32_t text;
                uint32_t send_bg;
                uint32_t send_pan;
        };
 
        static ColorScheme colors;
        static void set_colors ();
        static bool have_colors;
        void color_handler ();
 
        std::shared_ptr<ARDOUR::PannerShell> panner_shell;
        Glib::RefPtr<Pango::Layout> layout;
 
        typedef std::vector<Target*> Targets;
        Targets speakers;
        Targets signals;
        Target  position;
 
        Target *drag_target;
        int     width;
        int     height;
        double  radius;
        double  border;
        double  hoffset;
        double  voffset;
        double  last_width;
        bool    did_move;
        bool    have_elevation;
        bool    _send_mode;
 
        Target *find_closest_object (gdouble x, gdouble y, bool& is_signal);
 
        gint handle_motion (gint, gint, GdkModifierType);
 
        void toggle_bypass ();
        void handle_state_change ();
        void handle_position_change ();
        void label_signals ();
 
        PBD::ScopedConnectionList panshell_connections;
        PBD::ScopedConnectionList panner_connections;
 
        /* cartesian coordinates in GTK units ; adjust to same but on a circle of radius 1.0
           and centered in the middle of our area
        */
        void clamp_to_circle (double& x, double& y);
        void sphere_project (double& x, double& y, double& z);
};
 
class Panner2dWindow : public ArdourWindow
{
        public:
        Panner2dWindow (std::shared_ptr<ARDOUR::PannerShell>, int32_t height, uint32_t inputs);
 
        void reset (uint32_t n_inputs);
 
        private:
        Panner2d widget;
 
        Gtk::HBox         hpacker;
        Gtk::VBox         button_box;
        Gtk::ToggleButton bypass_button;
        Gtk::VBox         spinner_box;
        Gtk::VBox         left_side;
 
        Gtk::Adjustment   width_adjustment;
        Gtk::SpinButton   width_spinner;
 
        PBD::ScopedConnectionList panshell_connections;
        PBD::ScopedConnectionList panvalue_connections;
        void set_bypassed();
        void set_width();
 
        void pannable_handler ();
        void bypass_toggled ();
        void width_changed ();
        bool on_key_press_event (GdkEventKey*);
        bool on_key_release_event (GdkEventKey*);
};
 
#endif /* __ardour_panner_2d_h__ */