gain_meter.h

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/*
    Copyright (C) 2002 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 __ardour_gtk_gain_meter_h__
#define __ardour_gtk_gain_meter_h__

#include <vector>
#include <map>

#include <gtkmm/box.h>
#include <gtkmm/adjustment.h>
#include <gtkmm/frame.h>
#include <gtkmm/eventbox.h>
#include <gtkmm/button.h>
#include <gtkmm/table.h>
#include <gtkmm/drawingarea.h>
#include <gdkmm/colormap.h>

#include "pbd/signals.h"

#include "ardour/chan_count.h"
#include "ardour/types.h"
#include "ardour/session_handle.h"

#include "ardour_button.h"

#include "gtkmm2ext/click_box.h"
#include "gtkmm2ext/focus_entry.h"
#include "gtkmm2ext/slider_controller.h"

#include "enums.h"
#include "level_meter.h"

namespace ARDOUR {
        class IO;
        class Session;
        class Route;
        class RouteGroup;
        class PeakMeter;
        class Amp;
        class Automatable;
}
namespace Gtkmm2ext {
        class FastMeter;
}
namespace Gtk {
        class Menu;
}

class GainMeterBase : virtual public sigc::trackable, ARDOUR::SessionHandlePtr
{
  public:
        GainMeterBase (ARDOUR::Session*, bool horizontal, int, int);
        virtual ~GainMeterBase ();

        virtual void set_controls (boost::shared_ptr<ARDOUR::Route> route,
                                   boost::shared_ptr<ARDOUR::PeakMeter> meter,
                                   boost::shared_ptr<ARDOUR::Amp> amp);

        void update_gain_sensitive ();
        void update_meters ();

        const ARDOUR::ChanCount meter_channels () const;

        void effective_gain_display ();
        void set_width (Width, int len=0);
        void set_meter_strip_name (const char * name);
        void set_fader_name (const char * name);

        virtual void setup_meters (int len=0);
        virtual void set_type (ARDOUR::MeterType);

        boost::shared_ptr<PBD::Controllable> get_controllable();

        LevelMeterHBox& get_level_meter() const { return *level_meter; }
        Gtkmm2ext::SliderController& get_gain_slider() const { return *gain_slider; }

        PBD::Signal1<bool, GdkEventButton *> LevelMeterButtonPress;

  protected:

        friend class MixerStrip;
        friend class MeterStrip;
        friend class RouteTimeAxisView;
        boost::shared_ptr<ARDOUR::Route> _route;
        boost::shared_ptr<ARDOUR::PeakMeter> _meter;
        boost::shared_ptr<ARDOUR::Amp> _amp;
        std::vector<sigc::connection> connections;
        PBD::ScopedConnectionList model_connections;

        bool ignore_toggle;
        bool next_release_selects;

        Gtkmm2ext::SliderController *gain_slider;
        Gtk::Adjustment              gain_adjustment;
        Gtkmm2ext::FocusEntry        gain_display;
        Gtkmm2ext::FocusEntry        peak_display;
//      Gtk::Button                  peak_display;
        Gtk::DrawingArea             meter_metric_area;
        Gtk::DrawingArea             meter_ticks1_area;
        Gtk::DrawingArea             meter_ticks2_area;
        LevelMeterHBox              *level_meter;

        sigc::connection gain_watching;

        ArdourButton gain_automation_style_button;
        ArdourButton gain_automation_state_button;

        Gtk::Menu gain_astate_menu;
        Gtk::Menu gain_astyle_menu;

        gint gain_automation_style_button_event (GdkEventButton *);
        gint gain_automation_state_button_event (GdkEventButton *);
        gint pan_automation_style_button_event (GdkEventButton *);
        gint pan_automation_state_button_event (GdkEventButton *);

        void gain_automation_state_changed();
        void gain_automation_style_changed();

        void setup_gain_adjustment ();

        std::string astate_string (ARDOUR::AutoState);
        std::string short_astate_string (ARDOUR::AutoState);
        std::string _astate_string (ARDOUR::AutoState, bool);

        std::string astyle_string (ARDOUR::AutoStyle);
        std::string short_astyle_string (ARDOUR::AutoStyle);
        std::string _astyle_string (ARDOUR::AutoStyle, bool);

        Width _width;

        void show_gain ();
        void gain_activated ();
        bool gain_focused (GdkEventFocus*);

        float max_peak;

        void gain_adjusted ();
        void gain_changed ();

        void meter_point_clicked ();
        void gain_unit_changed ();

        virtual void hide_all_meters ();

        gint meter_button_press (GdkEventButton*, uint32_t);

        bool peak_button_release (GdkEventButton*);
        bool gain_key_press (GdkEventKey*);

        Gtk::Menu* meter_menu;
        void popup_meter_menu (GdkEventButton*);

        void amp_stop_touch ();
        void amp_start_touch ();

        void set_route_group_meter_point (ARDOUR::Route&, ARDOUR::MeterPoint);
        void set_meter_point (ARDOUR::Route&, ARDOUR::MeterPoint);
        gint meter_release (GdkEventButton*);
        gint meter_press (GdkEventButton*);
        bool wait_for_release;
        ARDOUR::MeterPoint old_meter_point;

        void parameter_changed (const char*);

        void reset_peak_display ();
        void reset_route_peak_display (ARDOUR::Route*);
        void reset_group_peak_display (ARDOUR::RouteGroup*);

        void redraw_metrics ();
        void on_theme_changed ();
        void color_handler(bool);
        ARDOUR::DataType _data_type;
        ARDOUR::ChanCount _previous_amp_output_streams;

private:

        bool level_meter_button_press (GdkEventButton *);
        PBD::ScopedConnection _level_meter_connection;
};

class GainMeter : public GainMeterBase, public Gtk::VBox
{
  public:
         GainMeter (ARDOUR::Session*, int);
        virtual ~GainMeter ();

        virtual void set_controls (boost::shared_ptr<ARDOUR::Route> route,
                                   boost::shared_ptr<ARDOUR::PeakMeter> meter,
                                   boost::shared_ptr<ARDOUR::Amp> amp);

        int get_gm_width ();
        void setup_meters (int len=0);
        void set_type (ARDOUR::MeterType);
        void route_active_changed ();

  protected:
        void hide_all_meters ();

        gint meter_metrics_expose (GdkEventExpose *);
        gint meter_ticks1_expose (GdkEventExpose *);
        gint meter_ticks2_expose (GdkEventExpose *);
        void on_style_changed (const Glib::RefPtr<Gtk::Style>&);

  private:

        void meter_configuration_changed (ARDOUR::ChanCount);
        void meter_type_changed (ARDOUR::MeterType);

        Gtk::HBox  gain_display_box;
        Gtk::HBox  fader_box;
        Gtk::VBox* fader_vbox;
        Gtk::HBox  hbox;
        Gtk::HBox  meter_hbox;
        Gtk::Alignment fader_alignment;
        Gtk::Alignment meter_alignment;
        std::vector<ARDOUR::DataType> _types;
};

#endif /* __ardour_gtk_gain_meter_h__ */