audio_clip_editor.h

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/*
 * Copyright (C) 2021 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2021 Ben Loftis <ben@harrisonconsoles.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 <ytkmm/box.h>
#include <ytkmm/label.h>
#include <ytkmm/table.h>
 
#include "pbd/history_owner.h"
 
#include "ardour/ardour.h"
#include "ardour/session_handle.h"
#include "ardour/triggerbox.h"
#include "ardour/types.h"
 
#include "gtkmm2ext/actions.h"
#include "gtkmm2ext/bindings.h"
#include "gtkmm2ext/cairo_packer.h"
 
#include "widgets/ardour_button.h"
 
#include "canvas/container.h"
#include "canvas/line.h"
#include "canvas/rectangle.h"
#include "canvas/ruler.h"
#include "canvas/scroll_group.h"
 
#include "audio_clock.h"
#include "cue_editor.h"
 
namespace ARDOUR
{
        class Session;
        class Location;
        class Trigger;
}
 
namespace ArdourCanvas
{
        class Text;
        class Polygon;
}
 
namespace ArdourWaveView
{
        class WaveView;
}
 
class AudioClipEditor :  public CueEditor
{
public:
        AudioClipEditor (std::string const &, bool with_transport = false);
        ~AudioClipEditor ();
 
        void canvas_allocate (Gtk::Allocation&);
 
        Gtk::Widget& contents ();
 
        void set_trigger (ARDOUR::TriggerReference&);
        void set_region (std::shared_ptr<ARDOUR::Region> r);
        void region_changed (const PBD::PropertyChange& what_changed);
 
        bool key_press (GdkEventKey*);
 
        /* EditingContext API. As of July 2025, we do not implement most of
         * these
         */
 
        bool button_press_handler (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
        bool button_press_handler_1 (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
        bool button_press_handler_2 (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
        bool button_release_handler (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
        bool button_press_dispatch (GdkEventButton*) { return true; }
        bool button_release_dispatch (GdkEventButton*) { return true; }
        bool motion_handler (ArdourCanvas::Item*, GdkEvent*, bool from_autoscroll = false) { return true; }
        bool enter_handler (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
        bool leave_handler (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
        bool key_press_handler (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
        bool key_release_handler (ArdourCanvas::Item*, GdkEvent*, ItemType) { return true; }
 
        bool canvas_note_event (GdkEvent* event, ArdourCanvas::Item*) { return true; }
        bool canvas_velocity_base_event (GdkEvent* event, ArdourCanvas::Item*) { return true; }
        bool canvas_velocity_event (GdkEvent* event, ArdourCanvas::Item*) { return true; }
        bool canvas_control_point_event (GdkEvent* event, ArdourCanvas::Item*, ControlPoint*) { return true; }
        bool canvas_bg_event (GdkEvent* event, ArdourCanvas::Item*) { return true; }
 
        samplecnt_t current_page_samples() const;
        void set_samples_per_pixel (samplecnt_t);
 
        Gdk::Cursor* which_track_cursor () const { return nullptr; }
        Gdk::Cursor* which_mode_cursor () const { return nullptr; }
        Gdk::Cursor* which_trim_cursor (bool left_side) const { return nullptr; }
        Gdk::Cursor* which_canvas_cursor (ItemType type) const { return nullptr; }
 
        Temporal::timepos_t snap_to_grid (Temporal::timepos_t const & start, Temporal::RoundMode direction, ARDOUR::SnapPref gpref) const { return start; }
        void snap_to_internal (Temporal::timepos_t& first, Temporal::RoundMode direction = Temporal::RoundNearest, ARDOUR::SnapPref gpref = ARDOUR::SnapToAny_Visual, bool ensure_snap = false) const {}
 
        void select_all_within (Temporal::timepos_t const &, Temporal::timepos_t const &, double, double, std::list<SelectableOwner*> const &, ARDOUR::SelectionOperation, bool) {}
        void get_per_region_note_selection (std::list<std::pair<PBD::ID, std::set<std::shared_ptr<Evoral::Note<Temporal::Beats> > > > >&) const {}
        void get_regionviews_by_id (PBD::ID const id, RegionSelection & regions) const {}
 
        void point_selection_changed () {}
        void delete_ () {}
        void paste (float times, bool from_context_menu) {}
        void keyboard_paste () {}
        void cut_copy (Editing::CutCopyOp) {}
 
        void maybe_update ();
 
        bool idle_data_captured () { return false; }
 
 private:
        ArdourCanvas::Container*         line_container;
        ArdourCanvas::Line*              start_line;
        ArdourCanvas::Line*              end_line;
        ArdourCanvas::Line*              loop_line;
        ArdourCanvas::Container*         ruler_container;
        ArdourCanvas::Ruler*             minsec_ruler;
 
        class ClipBBTMetric : public ArdourCanvas::Ruler::Metric
        {
          public:
                ClipBBTMetric (ARDOUR::TriggerReference tr) : tref (tr) {
                        units_per_pixel = 1;
                }
 
                void get_marks (std::vector<ArdourCanvas::Ruler::Mark>& marks, int64_t lower, int64_t upper, int maxchars) const;
 
          private:
                ARDOUR::TriggerReference tref;
 
        };
 
        ClipBBTMetric*                         clip_metric;
        std::vector<ArdourWaveView::WaveView*> waves;
        double                                 non_wave_height;
        samplepos_t                            left_origin;
        double                                 scroll_fraction;
 
        void scroll_left ();
        void scrol_right ();
 
        enum LineType {
                StartLine,
                EndLine,
                LoopLine,
        };
 
        bool event_handler (GdkEvent* ev);
        bool line_event_handler (GdkEvent* ev, ArdourCanvas::Line*);
        void drop_waves ();
        void set_wave_heights ();
        void set_spp_from_length (ARDOUR::samplecnt_t);
        void set_waveform_colors ();
        void set_colors ();
        void position_lines ();
        void scroll_changed ();
 
        class LineDrag
        {
        public:
                LineDrag (AudioClipEditor&, ArdourCanvas::Line&);
 
                void begin (GdkEventButton*);
                void end (GdkEventButton*);
                void motion (GdkEventMotion*);
 
        private:
                AudioClipEditor&    editor;
                ArdourCanvas::Line& line;
        };
 
        friend class LineDrag;
        LineDrag* current_line_drag;
 
        PBD::ScopedConnection state_connection;
 
        void build_canvas ();
        void build_lower_toolbar ();
        void pack_inner (Gtk::Box&);
        void pack_outer (Gtk::Box&);
 
        bool canvas_enter_leave (GdkEventCrossing* ev);
 
        void begin_write ();
        void end_write ();
 
        void show_count_in (std::string const &);
        void hide_count_in ();
 
        void unset (bool trigger_too);
        void load_shared_bindings ();
};