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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
    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 <ardour/types.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;
namespace Gtkmm2ext {
      class FastMeter;
      class BarController;
namespace Gtk {
      class Menu;

class GainMeterBase : virtual public sigc::trackable
      GainMeterBase ( ARDOUR::Session&, const Glib::RefPtr<Gdk::Pixbuf>& pix,
                   bool horizontal);
      virtual ~GainMeterBase ();

      virtual void set_io (boost::shared_ptr<ARDOUR::IO>);

      void update_gain_sensitive ();
      void update_meters ();
      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);

      PBD::Controllable& get_controllable() { return _io->gain_control(); }
      LevelMeter& get_level_meter() const { return *level_meter; }
      Gtkmm2ext::SliderController& get_gain_slider() const { return *gain_slider; }

      friend class MixerStrip;
      boost::shared_ptr<ARDOUR::IO> _io;
      ARDOUR::Session& _session;
      std::vector<sigc::connection> connections;

      bool ignore_toggle;
      bool next_release_selects;

      Gtkmm2ext::SliderController *gain_slider;
      Gtk::Adjustment              gain_adjustment;
      Gtkmm2ext::FocusEntry        gain_display;
      Gtk::Button                  peak_display;
      Gtk::DrawingArea             meter_metric_area;
      LevelMeter            *level_meter;

      sigc::connection gain_watching;

      Gtk::Button gain_automation_style_button;
      Gtk::ToggleButton 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();

      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 *);
      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*);

      gint start_gain_touch (GdkEventButton*);
      gint end_gain_touch (GdkEventButton*);

      void set_mix_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_group_peak_display (ARDOUR::RouteGroup*);

      static sigc::signal<void> ResetAllPeakDisplays;
      static sigc::signal<void,ARDOUR::RouteGroup*> ResetGroupPeakDisplays;

      void on_theme_changed ();
      bool style_changed;
      bool dpi_changed;
      bool color_changed;
      void color_handler(bool);

class GainMeter : public GainMeterBase, public Gtk::VBox
      GainMeter (ARDOUR::Session&);
      ~GainMeter () {}

      void set_io (boost::shared_ptr<ARDOUR::IO>);

      int get_gm_width ();
      void setup_meters (int len=0);

      static void setup_slider_pix ();

      void hide_all_meters ();

      gint meter_metrics_expose (GdkEventExpose *);

      static std::map<std::string,Glib::RefPtr<Gdk::Pixmap> > metric_pixmaps;
      static Glib::RefPtr<Gdk::Pixmap> render_metrics (Gtk::Widget&);

      Gtk::HBox  gain_display_box;
      Gtk::HBox  fader_box;
      Gtk::VBox* fader_vbox;
      Gtk::HBox  hbox;

      static Glib::RefPtr<Gdk::Pixbuf> slider;

#endif /* __ardour_gtk_gain_meter_h__ */

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