gtk2_ardour/level_meter.h

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/*
 * Copyright (C) 2008-2014 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2009-2011 David Robillard <d@drobilla.net>
 * Copyright (C) 2013-2019 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.
 */
 
#pragma once
 
#include <vector>
 
#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 "ardour/chan_count.h"
#include "ardour/session_handle.h"
 
#include "widgets/fastmeter.h"
 
#include "enums.h"
 
namespace ARDOUR {
        class Session;
        class PeakMeter;
}
namespace Gtk {
        class Menu;
}
 
class LevelMeterBase : public ARDOUR::SessionHandlePtr, virtual public sigc::trackable
{
public:
        LevelMeterBase (ARDOUR::Session*, PBD::EventLoop::InvalidationRecord* ir,
                        ArdourWidgets::FastMeter::Orientation o = ArdourWidgets::FastMeter::Vertical);
        virtual ~LevelMeterBase ();
 
        virtual void set_meter (ARDOUR::PeakMeter* meter);
 
        void update_gain_sensitive ();
 
        float update_meters ();
        void update_meters_falloff ();
        void clear_meters (bool reset_highlight = true);
        void hide_meters ();
        void setup_meters (int len=0, int width=3, int thin=2);
        void set_max_audio_meter_count (uint32_t cnt = 0);
 
        PBD::Signal<bool(GdkEventButton *)> ButtonPress;
        PBD::Signal<bool(GdkEventButton *)> ButtonRelease;
 
protected:
        virtual void mtr_pack(Gtk::Widget &w) = 0;
        virtual void mtr_remove(Gtk::Widget &w) = 0;
 
private:
        PBD::EventLoop::InvalidationRecord* parent_invalidator;
        ARDOUR::PeakMeter* _meter;
        ArdourWidgets::FastMeter::Orientation _meter_orientation;
 
        Width _width;
 
        struct MeterInfo {
                ArdourWidgets::FastMeter* meter;
                gint16                    width;
                int                       length;
                bool                      packed;
                float                     max_peak;
 
                MeterInfo() {
                        meter = 0;
                        width = 0;
                        length = 0;
                        packed = false;
                        max_peak = -INFINITY;
                }
        };
 
        guint16                regular_meter_width;
        int                    meter_length;
        guint16                thin_meter_width;
        std::vector<MeterInfo> meters;
        float                  max_peak;
        ARDOUR::MeterType      visible_meter_type;
        uint32_t               midi_count;
        uint32_t               meter_count;
        uint32_t               max_visible_meters;
 
        PBD::ScopedConnection _configuration_connection;
        PBD::ScopedConnection _meter_type_connection;
        PBD::ScopedConnection _parameter_connection;
 
        void hide_all_meters ();
        bool meter_button_press (GdkEventButton *);
        bool meter_button_release (GdkEventButton *);
 
        void parameter_changed (std::string);
        void configuration_changed (ARDOUR::ChanCount in, ARDOUR::ChanCount out);
        void meter_type_changed (ARDOUR::MeterType);
 
        bool color_changed;
        void color_handler ();
};
 
class LevelMeterHBox : public LevelMeterBase, public Gtk::HBox
{
public:
        LevelMeterHBox (ARDOUR::Session*);
        ~LevelMeterHBox();
 
protected:
        void mtr_pack(Gtk::Widget &w);
        void mtr_remove(Gtk::Widget &w);
};
 
class LevelMeterVBox : public LevelMeterBase, public Gtk::VBox
{
public:
        LevelMeterVBox (ARDOUR::Session*);
        ~LevelMeterVBox();
 
protected:
        void mtr_pack(Gtk::Widget &w);
        void mtr_remove(Gtk::Widget &w);
};