cue_editor.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 "pbd/history_owner.h"
 
#include "canvas/canvas.h"
 
#include "widgets/ardour_button.h"
#include "widgets/eventboxext.h"
 
#include "editing.h"
#include "editing_context.h"
#include "region_ui_settings.h"
 
namespace Gtk {
        class HScrollbar;
}
 
class CueEditor : public EditingContext, public PBD::HistoryOwner
{
  public:
        CueEditor (std::string const & name, bool with_transport_controls);
        ~CueEditor ();
 
        virtual Gtk::Widget& contents () = 0;
 
        void session_going_away ();
 
        ArdourCanvas::Container* get_trackview_group () const { return data_group; }
        ArdourCanvas::Container* get_noscroll_group() const { return no_scroll_group; }
        ArdourCanvas::ScrollGroup* get_hscroll_group () const { return h_scroll_group; }
        ArdourCanvas::ScrollGroup* get_cursor_scroll_group () const { return cursor_scroll_group; }
 
        void get_regionviews_by_id (PBD::ID const id, RegionSelection & regions) const;
        StripableTimeAxisView* get_stripable_time_axis_by_id (const PBD::ID& id) const;
        TrackViewList axis_views_from_routes (std::shared_ptr<ARDOUR::RouteList>) const;
        AxisView* axis_view_by_stripable (std::shared_ptr<ARDOUR::Stripable>) const { return nullptr; }
        AxisView* axis_view_by_control (std::shared_ptr<ARDOUR::AutomationControl>) const { return nullptr; }
 
        ARDOUR::Location* find_location_from_marker (ArdourMarker*, bool&) const;
        ArdourMarker* find_marker_from_location_id (PBD::ID const&, bool) const;
        TempoMarker* find_marker_for_tempo (Temporal::TempoPoint const &);
        MeterMarker* find_marker_for_meter (Temporal::MeterPoint const &);
 
        void maybe_autoscroll (bool, bool, bool from_headers);
        void stop_canvas_autoscroll ();
        bool autoscroll_active() const;
 
        void redisplay_grid (bool immediate_redraw);
        Temporal::timecnt_t get_nudge_distance (Temporal::timepos_t const & pos, Temporal::timecnt_t& next) const;
        std::list<SelectableOwner*> selectable_owners() { return std::list<SelectableOwner*>(); }
 
        void instant_save();
 
        void begin_selection_op_history ();
        void begin_reversible_selection_op (std::string cmd_name);
        void commit_reversible_selection_op ();
        void abort_reversible_selection_op ();
        void undo_selection_op ();
        void redo_selection_op ();
 
        RegionSelection region_selection();
 
        PBD::HistoryOwner& history() { return *this; }
        void history_changed ();
        PBD::ScopedConnection history_connection;
 
        void add_command (PBD::Command * cmd) { HistoryOwner::add_command (cmd); }
        void add_commands (std::vector<PBD::Command *> cmds) { HistoryOwner::add_commands (cmds); }
        void begin_reversible_command (std::string cmd_name) { HistoryOwner::begin_reversible_command (cmd_name); }
        void begin_reversible_command (GQuark gq) { HistoryOwner::begin_reversible_command (gq); }
        void abort_reversible_command () { HistoryOwner::abort_reversible_command (); }
        void commit_reversible_command () { HistoryOwner::commit_reversible_command (); }
 
        double get_y_origin () const;
 
        void set_zoom_focus (Editing::ZoomFocus);
        samplecnt_t get_current_zoom () const;
        virtual void set_samples_per_pixel (samplecnt_t);
        void reposition_and_zoom (samplepos_t, double);
 
        void set_mouse_mode (Editing::MouseMode, bool force = false);
        void step_mouse_mode (bool next);
        bool internal_editing() const { return true; }
        void mouse_mode_chosen (Editing::MouseMode);
 
        Gdk::Cursor* get_canvas_cursor () const;
        MouseCursors const* cursors () const {
                return _cursors;
        }
        void set_snapped_cursor_position (Temporal::timepos_t const & pos);
 
        std::vector<MidiRegionView*> filter_to_unique_midi_region_views (RegionSelection const & ms) const;
 
        void scrolled ();
        bool canvas_pre_event (GdkEvent*);
        void catch_pending_show_region ();
 
        std::pair<Temporal::timepos_t,Temporal::timepos_t> max_zoom_extent() const;
 
        void full_zoom_clicked();
        void zoom_to_show (Temporal::timecnt_t const &);
 
        bool ruler_event (GdkEvent*);
 
        virtual void set_show_source (bool);
        virtual void set_region (std::shared_ptr<ARDOUR::Region>);
        virtual void set_track (std::shared_ptr<ARDOUR::Track>);
        virtual void set_trigger (ARDOUR::TriggerReference&);
 
        virtual void maybe_update () = 0;
 
        ArdourCanvas::GtkCanvasViewport* get_canvas_viewport() const;
        ArdourCanvas::GtkCanvas* get_canvas() const;
 
        int set_state (const XMLNode&, int version);
        XMLNode& get_state () const;
 
  protected:
        ArdourCanvas::GtkCanvasViewport _canvas_viewport;
        ArdourCanvas::GtkCanvas& _canvas;
        ARDOUR::TriggerReference ref;
        std::shared_ptr<ARDOUR::Region> _region;
        std::shared_ptr<ARDOUR::Track>  _track;
        bool with_transport_controls;
        bool show_source;
        ArdourWidgets::EventBoxExt _contents;
        Gtk::VBox                  _toolbox;
        Gtk::HBox                   button_bar;
        Gtk::HScrollbar*           _canvas_hscrollbar;
 
        void load_bindings ();
        void register_actions ();
 
        /* The group containing all other groups that are scrolled vertically
           and horizontally.
        */
        ArdourCanvas::ScrollGroup* hv_scroll_group;
 
        /* The group containing all other groups that are scrolled horizontally ONLY
        */
        ArdourCanvas::ScrollGroup* h_scroll_group;
        ArdourCanvas::ScrollGroup* v_scroll_group;
 
        /* Scroll group for cursors, scrolled horizontally, above everything else
        */
        ArdourCanvas::ScrollGroup* cursor_scroll_group;
 
        ArdourCanvas::Container* global_rect_group;
        ArdourCanvas::Container* no_scroll_group;
        ArdourCanvas::Container* data_group;
 
        Gtk::Label length_label;
        Gtk::HBox   rec_box;
        Gtk::HBox   play_box;
 
        virtual void pack_inner (Gtk::Box&) = 0;
        virtual void pack_outer (Gtk::Box&) = 0;
        void build_zoom_focus_menu ();
 
        virtual void update_rulers() {}
        virtual bool canvas_enter_leave (GdkEventCrossing* ev) = 0;
 
        void build_upper_toolbar ();
        void do_undo (uint32_t n);
        void do_redo (uint32_t n);
 
        Temporal::timepos_t _get_preferred_edit_position (Editing::EditIgnoreOption, bool use_context_click, bool from_outside_canvas);
 
        ArdourWidgets::ArdourButton rec_enable_button;
        ArdourWidgets::ArdourButton play_button;
        ArdourWidgets::ArdourButton solo_button;
        ArdourWidgets::ArdourButton loop_button;
 
        ArdourCanvas::Rectangle* transport_loop_range_rect;
 
        bool play_button_press (GdkEventButton*);
        bool solo_button_press (GdkEventButton*);
        bool bang_button_press (GdkEventButton*);
        bool loop_button_press (GdkEventButton*);
 
        ArdourWidgets::ArdourDropdown length_selector;
        Temporal::BBT_Offset rec_length;
 
        bool zoom_in_allocate;
 
        void set_recording_length (Temporal::BBT_Offset bars);
 
        bool rec_button_press (GdkEventButton*);
        void rec_enable_change ();
        void blink_rec_enable (bool);
        sigc::connection rec_blink_connection;
 
        sigc::connection _update_connection;
        PBD::ScopedConnectionList object_connections;
 
        void trigger_arm_change ();
 
        double timebar_height;
        size_t n_timebars;
 
        /* autoscrolling */
 
        bool autoscroll_canvas ();
        void start_canvas_autoscroll (bool allow_horiz, bool allow_vert, const ArdourCanvas::Rect& boundary);
        void visual_changer (const VisualChange&);
 
        void update_solo_display ();
 
        std::shared_ptr<ARDOUR::Region> _visible_pending_region;
 
        void ruler_locate (GdkEventButton*);
 
        virtual void begin_write () = 0;
        virtual void end_write () = 0;
 
        virtual void manage_possible_header (Gtk::Allocation&) {}
 
        sigc::connection count_in_connection;
        Temporal::Beats count_in_to;
 
        void count_in (Temporal::timepos_t, unsigned int);
        void maybe_set_count_in ();
        virtual void show_count_in (std::string const &) = 0;
        virtual void hide_count_in () = 0;
 
        void data_captured (samplecnt_t);
        virtual bool idle_data_captured () = 0;
        std::atomic<int> idle_update_queued;
        PBD::ScopedConnectionList capture_connections;
        samplecnt_t data_capture_duration;
 
        virtual void unset (bool trigger_too);
 
        RegionUISettings region_ui_settings;
        void maybe_set_from_rsu ();
        virtual void set_from_rsu (RegionUISettings&);
 
        void metric_get_bbt (std::vector<ArdourCanvas::Ruler::Mark>&, samplepos_t, samplepos_t, gint);
 
        bool _scroll_drag;
        bool hscroll_press (GdkEventButton*);
        bool hscroll_release (GdkEventButton*);
};