rta_window.h

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/*
 * Copyright (C) 2025 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 <glibmm/thread.h>
 
#include <ytkmm/box.h>
#include <ytkmm/drawingarea.h>
 
#include "ardour/ardour.h"
#include "ardour/dsp_filter.h"
#include "ardour/session_handle.h"
#include "ardour/types.h"
 
#include "widgets/ardour_button.h"
#include "widgets/ardour_dropdown.h"
 
#include "ardour_window.h"
 
class RTAWindow : public ArdourWindow
{
public:
        RTAWindow ();
 
        void     set_session (ARDOUR::Session*);
        XMLNode& get_state () const;
 
private:
        void on_map ();
        void on_unmap ();
 
        void session_going_away ();
        void update_title ();
        void on_theme_changed ();
        void rta_settings_changed ();
 
        void darea_size_request (Gtk::Requisition*);
        void darea_size_allocate (Gtk::Allocation&);
        bool darea_expose_event (GdkEventExpose*);
 
        bool darea_button_press_event (GdkEventButton*);
        bool darea_button_release_event (GdkEventButton*);
        bool darea_motion_notify_event (GdkEventMotion*);
        bool darea_scroll_event (GdkEventScroll*);
        bool darea_leave_notify_event (GdkEventCrossing*);
        bool darea_grab_broken_event (GdkEventGrabBroken*);
        void darea_grab_notify (bool);
 
        void set_rta_speed (ARDOUR::DSP::PerceptualAnalyzer::Speed);
        void set_rta_warp (ARDOUR::DSP::PerceptualAnalyzer::Warp);
 
        void pause_toggled ();
        void clear_clicked ();
 
        enum DragStatus {
                DragNone,
                DragUpper,
                DragLower,
                DragRange
        };
 
        const float _dB_range = 86; // +6 .. -80 dB
        const float _dB_span  = 24;
        const float _dB_min   = -80;
 
        Gtk::VBox                          _vpacker;
        Gtk::HBox                          _ctrlbox;
        Gtk::DrawingArea                   _darea;
        Gtk::Label                         _pointer_info;
        ArdourWidgets::ArdourButton        _pause;
        ArdourWidgets::ArdourButton        _clear;
        ArdourWidgets::ArdourDropdown      _speed_dropdown;
        ArdourWidgets::ArdourDropdown      _warp_dropdown;
        Cairo::RefPtr<Cairo::ImageSurface> _grid;
        bool                               _visible;
        std::vector<std::string>           _speed_strings;
        std::vector<std::string>           _warp_strings;
        std::map<int, float>               _xpos;
        Gtkmm2ext::Color                   _basec;
        Gtkmm2ext::Color                   _gridc;
        Gtkmm2ext::Color                   _textc;
        int                                _margin;
        float                              _uiscale;
        int                                _min_dB;
        int                                _max_dB;
        bool                               _hovering_dB;
        DragStatus                         _dragging_dB;
        float                              _dragstart_y;
        float                              _dragstart_dB;
        int                                _cursor_x;
        int                                _cursor_y;
 
        PBD::ScopedConnectionList _rta_connections;
};