pianoroll.h

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/*
 * Copyright (C) 2023 Paul Davis <paul@linuxaudiosystems.com>
 *
 * 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 <map>
 
#include "pbd/timer.h"
 
#include <ytkmm/adjustment.h>
 
#include "canvas/ruler.h"
#include "widgets/eventboxext.h"
 
#include "cue_editor.h"
 
namespace Gtk {
        class Widget;
        class HScrollbar;
}
 
namespace ArdourCanvas {
        class Box;
        class Canvas;
        class Container;
        class GtkCanvasViewport;
        class PianoRollHeader;
        class ScrollGroup;
        class Widget;
}
 
namespace ArdourWidgets {
        class ArdourButton;
        class MetaButton;
}
 
class PianorollMidiView;
class PianorollMidiBackground;
 
class Pianoroll : public CueEditor
{
  public:
        Pianoroll (std::string const & name, bool with_transport_controls = false);
        ~Pianoroll ();
 
        Gtk::Widget& contents ();
 
        samplecnt_t current_page_samples() const;
 
        void get_per_region_note_selection (std::list<std::pair<PBD::ID, std::set<std::shared_ptr<Evoral::Note<Temporal::Beats> > > > >&) const {}
 
        Temporal::Beats get_grid_type_as_beats (bool& success, Temporal::timepos_t const & position) const;
        Temporal::Beats get_draw_length_as_beats (bool& success, Temporal::timepos_t const & position) const;
 
        bool canvas_note_event (GdkEvent* event, ArdourCanvas::Item*);
        bool canvas_velocity_base_event (GdkEvent* event, ArdourCanvas::Item*);
        bool canvas_velocity_event (GdkEvent* event, ArdourCanvas::Item*);
        bool canvas_control_point_event (GdkEvent* event, ArdourCanvas::Item*, ControlPoint*);
        bool canvas_cue_start_event (GdkEvent* event, ArdourCanvas::Item*);
        bool canvas_cue_end_event (GdkEvent* event, ArdourCanvas::Item*);
        bool canvas_bg_event (GdkEvent* event, ArdourCanvas::Item*);
 
        int32_t get_grid_beat_divisions (Editing::GridType gt) const { return 1; }
        int32_t get_grid_music_divisions (Editing::GridType gt, uint32_t event_state) const { return 1; }
 
        void set_trigger (ARDOUR::TriggerReference&);
        void set_region (std::shared_ptr<ARDOUR::Region>);
        void set_track (std::shared_ptr<ARDOUR::Track>);
 
        double max_extents_scale() const { return 1.2; }
        void set_samples_per_pixel (samplecnt_t);
 
        void set_mouse_mode (Editing::MouseMode, bool force = false);
 
        void midi_action (void (MidiView::*method)());
 
        std::list<SelectableOwner*> selectable_owners();
        void select_all_within (Temporal::timepos_t const &, Temporal::timepos_t const &, double, double, std::list<SelectableOwner*> const &, ARDOUR::SelectionOperation, bool);
 
        Gdk::Cursor* which_track_cursor () const;
        Gdk::Cursor* which_mode_cursor () const;
        Gdk::Cursor* which_trim_cursor (bool left_side) const;
        Gdk::Cursor* which_canvas_cursor (ItemType type) const;
 
        void set_visible_channel (int chan);
        int visible_channel () const { return _visible_channel; }
 
        void note_mode_clicked();
        ARDOUR::NoteMode note_mode() const { return _note_mode; }
        void set_note_mode (ARDOUR::NoteMode);
 
        void set_trigger_start (Temporal::timepos_t const &);
        void set_trigger_end (Temporal::timepos_t const &);
        void set_trigger_length (Temporal::timecnt_t const &);
        void set_trigger_bounds (Temporal::timepos_t const &, Temporal::timepos_t const &);
 
        void delete_ ();
        void paste (float times, bool from_context_menu);
        void keyboard_paste ();
        void cut_copy (Editing::CutCopyOp);
 
        PianorollMidiView* midi_view() const { return view; }
        void set_session (ARDOUR::Session*);
        bool allow_trim_cursors () const;
 
        void shift_midi (Temporal::timepos_t const &, bool model);
        void make_a_region();
 
        ARDOUR::InstrumentInfo* instrument_info() const;
 
        void set_show_source (bool);
 
  protected:
        Temporal::timepos_t snap_to_grid (Temporal::timepos_t const & start,
                                          Temporal::RoundMode   direction,
                                          ARDOUR::SnapPref    gpref) const;
 
        void snap_to_internal (Temporal::timepos_t& first,
                               Temporal::RoundMode    direction = Temporal::RoundNearest,
                               ARDOUR::SnapPref     gpref = ARDOUR::SnapToAny_Visual,
                               bool                 ensure_snap = false) const;
 
        bool button_press_handler (ArdourCanvas::Item*, GdkEvent*, ItemType);
        bool button_press_handler_1 (ArdourCanvas::Item*, GdkEvent*, ItemType);
        bool button_press_handler_2 (ArdourCanvas::Item*, GdkEvent*, ItemType);
        bool button_release_handler (ArdourCanvas::Item*, GdkEvent*, ItemType);
        bool button_press_dispatch (GdkEventButton*);
        bool button_release_dispatch (GdkEventButton*);
        bool motion_handler (ArdourCanvas::Item*, GdkEvent*, bool from_autoscroll = false);
        bool enter_handler (ArdourCanvas::Item*, GdkEvent*, ItemType);
        bool leave_handler (ArdourCanvas::Item*, GdkEvent*, ItemType);
        bool key_press_handler (ArdourCanvas::Item*, GdkEvent*, ItemType);
        bool key_release_handler (ArdourCanvas::Item*, GdkEvent*, ItemType);
 
        void escape ();
        void session_going_away ();
 
 private:
        ArdourCanvas::Ruler*     bbt_ruler;
        ArdourCanvas::Rectangle* tempo_bar;
        ArdourCanvas::Rectangle* meter_bar;
        ArdourCanvas::PianoRollHeader* prh;
 
        ArdourWidgets::ArdourButton* velocity_button;
        ArdourWidgets::ArdourButton* bender_button;
        ArdourWidgets::ArdourButton* pressure_button;
        ArdourWidgets::ArdourButton* expression_button;
        ArdourWidgets::ArdourButton* modulation_button;
        ArdourWidgets::MetaButton* cc_dropdown1;
        ArdourWidgets::MetaButton* cc_dropdown2;
        ArdourWidgets::MetaButton* cc_dropdown3;
 
        typedef std::map<ArdourWidgets::ArdourButton*,Evoral::Parameter> ParameterButtonMap;
        ParameterButtonMap parameter_button_map;
        void rebuild_parameter_button_map ();
 
        PianorollMidiBackground* bg;
        PianorollMidiView* view;
 
        void build_canvas ();
        void canvas_allocate (Gtk::Allocation);
        void build_lower_toolbar ();
 
        bool canvas_enter_leave (GdkEventCrossing* ev);
 
        class BBTMetric : public ArdourCanvas::Ruler::Metric
        {
          public:
                BBTMetric (Pianoroll& ec) : context (&ec) {}
 
                void get_marks (std::vector<ArdourCanvas::Ruler::Mark>& marks, int64_t lower, int64_t upper, int maxchars) const {
                        context->metric_get_bbt (marks, lower, upper, maxchars);
                }
 
          private:
                Pianoroll* context;
        };
 
        BBTMetric bbt_metric;
 
        PBD::ScopedConnectionList view_connections;
        void maybe_update ();
        void trigger_prop_change (PBD::PropertyChange const &);
        void region_prop_change (PBD::PropertyChange const &);
 
        void unset (bool trigger_too);
 
        void bindings_changed ();
 
        bool idle_data_captured ();
 
        bool user_automation_button_event (GdkEventButton* ev, ArdourWidgets::MetaButton* mb);
        bool automation_button_event (GdkEventButton*, Evoral::ParameterType type, int id);
        bool automation_button_click (Evoral::ParameterType type, int id, ARDOUR::SelectionOperation);
        void automation_led_click (GdkEventButton*, Evoral::ParameterType type, int id);
        void user_led_click (GdkEventButton* ev, ArdourWidgets::MetaButton* metabutton);
 
        int _visible_channel;
 
        ARDOUR::NoteMode _note_mode;
        sigc::signal<void> NoteModeChanged;
 
        void automation_state_changed ();
 
        void point_selection_changed ();
 
        void add_single_controller_item (Gtk::Menu_Helpers::MenuList& ctl_items, int ctl, const std::string& name, ArdourWidgets::MetaButton*);
        void add_multi_controller_item (Gtk::Menu_Helpers::MenuList& ctl_items, uint16_t channels, int ctl, const std::string& name, ArdourWidgets::MetaButton*);
        void reset_user_cc_choice (std::string, Evoral::Parameter param, ArdourWidgets::MetaButton*);
 
        bool ignore_channel_changes;
        void visible_channel_changed ();
 
        void map_transport_state ();
 
        void update_tempo_based_rulers ();
        void update_rulers() { update_tempo_based_rulers (); }
 
        Gtk::Menu _region_context_menu;
        void popup_region_context_menu (ArdourCanvas::Item* item, GdkEvent* event);
 
        void set_note_selection (uint8_t note);
        void add_note_selection (uint8_t note);
        void extend_note_selection (uint8_t note);
        void toggle_note_selection (uint8_t note);
 
        void pack_inner (Gtk::Box&);
        void pack_outer (Gtk::Box&);
 
        void begin_write ();
        void end_write ();
 
        void manage_possible_header (Gtk::Allocation& alloc);
 
        void show_count_in (std::string const &);
        void hide_count_in ();
 
        void instant_save ();
        void parameter_changed (std::string param);
};