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gain_meter.h

/*
    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.

    $Id: gain_meter.h,v 1.6 2005/04/09 13:38:10 pauld Exp $
*/

#ifndef __ardour_gtk_gain_meter_h__
#define __ardour_gtk_gain_meter_h__

#include <vector>

#include <ardour/types.h>

#include <gtk--.h>
#include <gtkmmext/slider_controller.h>
#include <gtkmmext/click_box.h>

#include "enums.h"

namespace ARDOUR {
      class IO;
      class Session;
      class Route;
      class RouteGroup;
}
namespace Gtkmmext {
      class FastMeter;
      class BarController;
      class Pix;
}

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

      void update_gain_sensitive ();

      void update_meters ();
      void update_meters_falloff ();

      void effective_gain_display ();

      void set_width (Width);
      void setup_meters ();

      void set_meter_strip_name (string name);
      void set_fader_name (string name);

  private:
      ARDOUR::IO& _io;
      ARDOUR::Session& _session;

      bool ignore_toggle;

      Gtkmmext::VSliderController *gain_slider;
      Gtk::Adjustment              gain_adjustment;
      Gtk::Frame                   gain_display_frame;
      Gtkmmext::ClickBox           gain_display;
      Gtk::Frame                   peak_display_frame;
      Gtk::EventBox                peak_display;
      Gtk::Label                   peak_display_label;
      Gtk::Button                  gain_unit_button;
      Gtk::Label                   gain_unit_label;
      Gtk::HBox                    gain_display_box;
      Gtk::HBox                    fader_box;
      Gtk::DrawingArea             meter_metric_area;
      Gtk::Button                  meter_point_button;
        Gtk::Label                   meter_point_label;
      Gtk::Table                   top_table;
      Width                       _width;

      gint meter_metrics_expose (GdkEventExpose *);

      static void _gain_printer (char buf[32], Gtk::Adjustment&, void *);
      void gain_printer (char buf[32], Gtk::Adjustment&);
      
      struct MeterInfo {
          Gtkmmext::FastMeter *meter;
          gint16          width;   
          bool            packed;
          
          MeterInfo() { 
                meter = 0;
                width = 0;
                packed = false;
          }
      };

      static const guint16 regular_meter_width = 5;
      static const guint16 thin_meter_width = 2;
      vector<MeterInfo>    meters;
      float       max_peak;
      

      Gtk::HBox   hbox;
      Gtk::HBox   meter_packer;

      void gain_adjusted ();
      void gain_changed (void *);
      
      void meter_point_clicked ();
      void meter_changed (void *);
      void gain_unit_changed ();
      
      void hide_all_meters ();

      gint meter_button_press (GdkEventButton*, uint32_t);
      gint meter_button_release (GdkEventButton*, uint32_t);

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

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

      gint entry_focus_event (GdkEventFocus* ev);

      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 meter_hold_changed();

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

      static SigC::Signal0<void> ResetAllPeakDisplays;
      static SigC::Signal1<void,ARDOUR::RouteGroup*> ResetGroupPeakDisplays;

      static Gtkmmext::Pix* slider_pix;
      static int setup_slider_pix ();
};

#endif /* __ardour_gtk_gain_meter_h__ */


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