midi_region_view.h

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/*
 * Copyright (C) 2006-2015 David Robillard <d@drobilla.net>
 * Copyright (C) 2008-2012 Hans Baier <hansfbaier@googlemail.com>
 * Copyright (C) 2008-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2015-2016 Tim Mayberry <mojofunk@gmail.com>
 * Copyright (C) 2015-2017 Nick Mainsbridge <mainsbridge@gmail.com>
 * Copyright (C) 2015-2017 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.
 */
 
#ifndef __gtk_ardour_midi_region_view_h__
#define __gtk_ardour_midi_region_view_h__
 
#include <string>
#include <vector>
#include <stdint.h>
 
#include "pbd/signals.h"
 
#include "ardour/midi_model.h"
#include "ardour/types.h"
 
#include "editing.h"
#include "region_view.h"
#include "midi_time_axis.h"
#include "time_axis_view_item.h"
#include "automation_line.h"
#include "enums.h"
 
namespace ARDOUR {
        class MidiRegion;
        class MidiModel;
        class Filter;
};
 
namespace MIDI {
        namespace Name {
                struct PatchPrimaryKey;
        };
};
 
class SysEx;
class Note;
class Hit;
class MidiTimeAxisView;
class NoteBase;
class GhostRegion;
class AutomationTimeAxisView;
class AutomationRegionView;
class MidiCutBuffer;
class MidiListEditor;
class EditNoteDialog;
class PatchChange;
class ItemCounts;
class CursorContext;
class VelocityGhostRegion;
 
class MidiRegionView : public RegionView
{
public:
        typedef Evoral::Note<Temporal::Beats> NoteType;
        typedef Evoral::Sequence<Temporal::Beats>::Notes Notes;
 
        MidiRegionView (ArdourCanvas::Container*              parent,
                        RouteTimeAxisView&                    tv,
                        std::shared_ptr<ARDOUR::MidiRegion> r,
                        double                                samples_per_pixel,
                        uint32_t                              basic_color);
 
        MidiRegionView (ArdourCanvas::Container*              parent,
                        RouteTimeAxisView&                    tv,
                        std::shared_ptr<ARDOUR::MidiRegion> r,
                        double                                samples_per_pixel,
                        uint32_t                              basic_color,
                        bool                                  recording,
                        Visibility                            visibility);
 
 
        MidiRegionView (const MidiRegionView& other);
        MidiRegionView (const MidiRegionView& other, std::shared_ptr<ARDOUR::MidiRegion>);
 
        ~MidiRegionView ();
 
        void init (bool wfd);
 
        void set_selected (bool yn);
 
        const std::shared_ptr<ARDOUR::MidiRegion> midi_region() const;
 
        inline MidiTimeAxisView* midi_view() const
        { return dynamic_cast<MidiTimeAxisView*>(&trackview); }
 
        inline MidiStreamView* midi_stream_view() const
        { return midi_view()->midi_view(); }
 
        void step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
                            Temporal::Beats pos, Temporal::Beats len);
        void step_sustain (Temporal::Beats beats);
        void set_height (double);
        void apply_note_range(uint8_t lowest, uint8_t highest, bool force=false);
 
        inline ARDOUR::ColorMode color_mode() const { return midi_view()->color_mode(); }
 
        uint32_t get_fill_color() const;
        void color_handler ();
 
        void show_step_edit_cursor (Temporal::Beats pos);
        void move_step_edit_cursor (Temporal::Beats pos);
        void hide_step_edit_cursor ();
        void set_step_edit_cursor_width (Temporal::Beats beats);
 
        GhostRegion* add_ghost (TimeAxisView&);
 
        NoteBase* add_note(const std::shared_ptr<NoteType> note, bool visible);
 
        void cut_copy_clear (Editing::CutCopyOp);
        bool paste (Temporal::timepos_t const & pos, const ::Selection& selection, PasteContext& ctx);
        void paste_internal (Temporal::timepos_t const & pos, unsigned paste_count, float times, const MidiCutBuffer&);
 
        void add_canvas_patch_change (ARDOUR::MidiModel::PatchChangePtr patch);
 
        void get_patch_key_at (Temporal::Beats time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key) const;
 
        MIDI::Name::PatchPrimaryKey patch_change_to_patch_key (ARDOUR::MidiModel::PatchChangePtr);
 
        void change_patch_change (PatchChange& old_patch, const MIDI::Name::PatchPrimaryKey& new_patch);
        void change_patch_change (ARDOUR::MidiModel::PatchChangePtr, Evoral::PatchChange<Temporal::Beats> const &);
 
        void add_patch_change (Temporal::timecnt_t const &, Evoral::PatchChange<Temporal::Beats> const &);
        void move_patch_change (PatchChange &, Temporal::Beats);
        void delete_patch_change (PatchChange *);
        void edit_patch_change (PatchChange *);
 
        void delete_sysex (SysEx*);
 
        void step_patch (PatchChange& patch, bool bank, int delta);
 
        void display_patch_changes();
 
        void display_sysexes();
 
        void begin_write();
        void end_write();
        void extend_active_notes();
 
        void begin_drag_edit (std::string const & why);
        void end_drag_edit ();
 
        void display_model(std::shared_ptr<ARDOUR::MidiModel> model);
        std::shared_ptr<ARDOUR::MidiModel> model() const { return _model; }
 
        /* note_diff commands should start here; this initiates an undo record */
        void start_note_diff_command (std::string name = "midi edit");
 
        void note_diff_add_change (NoteBase* ev, ARDOUR::MidiModel::NoteDiffCommand::Property, uint8_t val);
        void note_diff_add_change (NoteBase* ev, ARDOUR::MidiModel::NoteDiffCommand::Property, Temporal::Beats val);
        void note_diff_add_note (const std::shared_ptr<NoteType> note, bool selected, bool show_velocity = false);
        void note_diff_remove_note (NoteBase* ev);
 
        /* note_diff commands should be completed with one of these calls; they may (or may not) commit the undo record */
        void apply_note_diff (bool as_subcommand = false, bool was_copy = false);
        void abort_note_diff();
 
        void   note_entered(NoteBase* ev);
        void   note_left(NoteBase* ev);
        void   patch_entered (PatchChange *);
        void   patch_left (PatchChange *);
        void   sysex_entered (SysEx* p);
        void   sysex_left (SysEx* p);
        void   note_mouse_position (float xfraction, float yfraction, bool can_set_cursor=true);
        void   unique_select(NoteBase* ev);
        void   note_selected(NoteBase* ev, bool add, bool extend=false);
        void   note_deselected(NoteBase* ev);
        void   delete_selection();
        void   delete_note (std::shared_ptr<NoteType>);
        size_t selection_size() { return _selection.size(); }
        void   select_all_notes ();
        void   select_range(Temporal::timepos_t const & start, Temporal::timepos_t const & end);
        void   invert_selection ();
        void   extend_selection ();
        void   duplicate_selection ();
 
        Temporal::Beats earliest_in_selection ();
        void move_selection(Temporal::timecnt_t const & dx, double dy, double cumulative_dy);
        void note_dropped (NoteBase* ev, Temporal::timecnt_t const & d_qn, int8_t d_note, bool copy);
        NoteBase* copy_selection (NoteBase* primary);
        void move_copies(Temporal::timecnt_t const & dx_qn, double dy, double cumulative_dy);
 
        void select_notes (std::list<Evoral::event_id_t>, bool allow_audition);
        void select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend);
        void toggle_matching_notes (uint8_t notenum, uint16_t channel_mask);
 
        bool note_in_region_range(const std::shared_ptr<NoteType> note, bool& visible) const;
        /* Test if a note is withing this region's time range. Return true if so */
        bool note_in_region_time_range(const std::shared_ptr<NoteType> note) const;
 
        double get_position_pixels();
 
        double get_end_position_pixels();
 
        void begin_resizing(bool at_front);
 
        void update_resizing (NoteBase* primary, bool at_front, double delta_x, bool relative, double snap_delta, bool with_snap);
        void finish_resizing (NoteBase* primary, bool at_front, double delat_x, bool relative, double snap_delta, bool with_snap);
        void abort_resizing ();
 
        void change_channel(uint8_t channel);
 
        enum MouseState {
                None,
                Pressed,
                SelectTouchDragging,
                SelectRectDragging,
                SelectVerticalDragging,
                AddDragging
        };
 
        MouseState mouse_state() const { return _mouse_state; }
 
        struct NoteResizeData {
                ::Note                  *note;
                ArdourCanvas::Rectangle *resize_rect;
        };
 
        double snap_to_pixel(double x, bool ensure_snap = false);
 
        Temporal::timecnt_t snap_pixel_to_time (double x, bool ensure_snap = false);
 
        void goto_previous_note (bool add_to_selection);
        void goto_next_note (bool add_to_selection);
        void change_note_lengths (bool, bool, Temporal::Beats beats, bool start, bool end);
        void change_velocities (bool up, bool fine, bool allow_smush, bool all_together);
        void set_velocity (NoteBase* primary, int velocity);
        bool set_velocity_for_notes (std::vector<NoteBase*>& notes, int velocity);
        bool set_velocities_for_notes (std::vector<NoteBase*>& notes, std::vector<int>& velocities);
        void transpose (bool up, bool fine, bool allow_smush);
        void nudge_notes (bool forward, bool fine);
        void channel_edit ();
        void velocity_edit ();
 
        void show_list_editor ();
 
        typedef std::set<NoteBase*> Selection;
        Selection const & selection () const {
                return _selection;
        }
 
        void selection_as_notelist (Notes& selected, bool allow_all_if_none_selected = false);
 
        void set_channel_selector_scoped_note(NoteBase* note){ _channel_selection_scoped_note = note; }
        NoteBase* channel_selector_scoped_note(){  return _channel_selection_scoped_note; }
 
        void trim_front_starting ();
        void trim_front_ending ();
 
        void create_note_at (Temporal::timepos_t const & t, double y, Temporal::Beats length, uint32_t state, bool shift_snap);
 
        void clear_selection ();
 
        ARDOUR::InstrumentInfo& instrument_info() const;
 
        void note_deleted (NoteBase*);
        void clear_note_selection ();
 
        void show_verbose_cursor_for_new_note_value(std::shared_ptr<NoteType> current_note, uint8_t new_note) const;
 
  protected:
        void region_resized (const PBD::PropertyChange&);
 
        void set_flags (XMLNode *);
        void store_flags ();
 
        void reset_width_dependent_items (double pixel_width);
 
        void parameter_changed (std::string const & p);
        void _redisplay (bool view_only);
 
  protected:
        friend class Editor;
 
        void invert_note_selection ();
        void extend_note_selection ();
 
        void move_note_starts_earlier_fine () { change_note_lengths (true, false, Temporal::Beats(), true, false); }
        void move_note_starts_earlier () { change_note_lengths (false, false, Temporal::Beats(), true, false); }
        void move_note_ends_later_fine () { change_note_lengths (true, false, Temporal::Beats(), false, true); }
        void move_note_ends_later () { change_note_lengths (false, false, Temporal::Beats(), false, true); }
        void move_note_starts_later_fine () { change_note_lengths (true, true, Temporal::Beats(), true, false); }
        void move_note_starts_later () { change_note_lengths (false, true, Temporal::Beats(), true, false); }
        void move_note_ends_earlier_fine () { change_note_lengths (true, true, Temporal::Beats(), false, true); }
        void move_note_ends_earlier () { change_note_lengths (false, true, Temporal::Beats(), false, true); }
 
        void select_next_note () { goto_next_note (false); }
        void select_previous_note () { goto_previous_note (false); }
        void add_select_next_note () { goto_next_note (true); }
        void add_select_previous_note () { goto_previous_note (true); }
 
        void increase_note_velocity ()                     { change_velocities (true, false, false, false); }
        void increase_note_velocity_fine ()                { change_velocities (true, true, false, false); }
        void increase_note_velocity_smush ()               { change_velocities (true, false, true, false); }
        void increase_note_velocity_together ()            { change_velocities (true, false, false, true); }
        void increase_note_velocity_fine_smush ()          { change_velocities (true, true, true, false); }
        void increase_note_velocity_fine_together ()       { change_velocities (true, true, false, true); }
        void increase_note_velocity_smush_together ()      { change_velocities (true, false, true, true); }
        void increase_note_velocity_fine_smush_together () { change_velocities (true, true, true, true); }
 
        void decrease_note_velocity ()                     { change_velocities (false, false, false, false); }
        void decrease_note_velocity_fine ()                { change_velocities (false, true, false, false); }
        void decrease_note_velocity_smush ()               { change_velocities (false, false, true, false); }
        void decrease_note_velocity_together ()            { change_velocities (false, false, false, true); }
        void decrease_note_velocity_fine_smush ()          { change_velocities (false, true, true, false); }
        void decrease_note_velocity_fine_together ()       { change_velocities (false, true, false, true); }
        void decrease_note_velocity_smush_together ()      { change_velocities (false, false, true, true); }
        void decrease_note_velocity_fine_smush_together () { change_velocities (false, true, true, true); }
 
        void transpose_up_octave () { transpose (true, false, false); }
        void transpose_up_octave_smush () { transpose (true, false, true); }
        void transpose_up_tone () { transpose (true, true, false); }
        void transpose_up_tone_smush () { transpose (true, true, true); }
 
        void transpose_down_octave () { transpose (false, false, false); }
        void transpose_down_octave_smush () { transpose (false, false, true); }
        void transpose_down_tone () { transpose (false, true, false); }
        void transpose_down_tone_smush () { transpose (false, true, true); }
 
        void nudge_notes_later () { nudge_notes (true, false); }
        void nudge_notes_later_fine () { nudge_notes (true, true); }
        void nudge_notes_earlier () { nudge_notes (false, false); }
        void nudge_notes_earlier_fine () { nudge_notes (false, true); }
 
        void quantize_selected_notes ();
 
  private:
 
        friend class MidiRubberbandSelectDrag;
        friend class MidiVerticalSelectDrag;
        friend class NoteDrag;
        friend class NoteCreateDrag;
        friend class HitCreateDrag;
        friend class MidiGhostRegion;
 
        friend class EditNoteDialog;
 
        void play_midi_note (std::shared_ptr<NoteType> note);
        void start_playing_midi_note (std::shared_ptr<NoteType> note);
        void start_playing_midi_chord (std::vector<std::shared_ptr<NoteType> > notes);
 
        void clear_selection_internal ();
 
        void clear_events ();
 
        bool canvas_group_event(GdkEvent* ev);
        bool note_canvas_event(GdkEvent* ev);
 
        void midi_channel_mode_changed ();
        PBD::ScopedConnection _channel_mode_changed_connection;
        void instrument_settings_changed ();
        PBD::ScopedConnection _instrument_changed_connection;
 
        void change_note_channel (NoteBase *, int8_t, bool relative=false);
        void change_note_velocity(NoteBase* ev, int8_t vel, bool relative=false);
        uint8_t change_note_note(NoteBase* ev, int8_t note, bool relative=false);
        void change_note_time(NoteBase* ev, ARDOUR::MidiModel::TimeType, bool relative=false);
        void change_note_length (NoteBase *, ARDOUR::MidiModel::TimeType);
        void trim_note(NoteBase* ev, ARDOUR::MidiModel::TimeType start_delta,
                       ARDOUR::MidiModel::TimeType end_delta);
 
        void update_drag_selection (Temporal::timepos_t const & start, Temporal::timepos_t const & end, double y0, double y1, bool extend);
        void update_vertical_drag_selection (double last_y, double y, bool extend);
 
        void add_to_selection (NoteBase*);
        void remove_from_selection (NoteBase*);
 
        std::string get_note_name (std::shared_ptr<NoteType> note, uint8_t note_value) const;
 
        void show_verbose_cursor (std::string const &, double, double) const;
        void show_verbose_cursor (std::shared_ptr<NoteType>) const;
 
        uint8_t get_velocity_for_add (ARDOUR::MidiModel::TimeType time) const;
        uint8_t get_channel_for_add (ARDOUR::MidiModel::TimeType time) const;
 
        uint8_t  _current_range_min;
        uint8_t  _current_range_max;
 
        typedef boost::unordered_map<std::shared_ptr<NoteType>, NoteBase*>                             Events;
        typedef boost::unordered_map<ARDOUR::MidiModel::PatchChangePtr, std::shared_ptr<PatchChange> > PatchChanges;
        typedef boost::unordered_map<ARDOUR::MidiModel::constSysExPtr, std::shared_ptr<SysEx> >        SysExes;
        typedef std::vector<NoteBase*> CopyDragEvents;
 
        std::shared_ptr<ARDOUR::MidiModel> _model;
        Events                               _events;
        CopyDragEvents                       _copy_drag_events;
        PatchChanges                         _patch_changes;
        SysExes                              _sys_exes;
        Note**                               _active_notes;
        ArdourCanvas::Container*             _note_group;
        ARDOUR::MidiModel::NoteDiffCommand*  _note_diff_command;
        NoteBase*                            _ghost_note;
        double                               _last_ghost_x;
        double                               _last_ghost_y;
        ArdourCanvas::Rectangle*             _step_edit_cursor;
        Temporal::Beats                      _step_edit_cursor_width;
        Temporal::Beats                      _step_edit_cursor_position;
        NoteBase*                            _channel_selection_scoped_note;
 
        MouseState _mouse_state;
        int _pressed_button;
 
        Selection _selection;
 
        MidiCutBuffer* selection_as_cut_buffer () const;
 
        std::set< std::shared_ptr<NoteType> > _marked_for_selection;
 
        std::set<Evoral::event_id_t> _pending_note_selection;
 
        std::set< std::shared_ptr<NoteType> > _marked_for_velocity;
 
        std::vector<NoteResizeData *> _resize_data;
 
        PBD::ScopedConnection content_connection;
 
        NoteBase* find_canvas_note (std::shared_ptr<NoteType>);
        NoteBase* find_canvas_note (Evoral::event_id_t id);
        Events::iterator _optimization_iterator;
 
        std::shared_ptr<PatchChange> find_canvas_patch_change (ARDOUR::MidiModel::PatchChangePtr p);
        std::shared_ptr<SysEx> find_canvas_sys_ex (ARDOUR::MidiModel::SysExPtr s);
 
        friend class VelocityGhostRegion;
        void sync_velocity_drag (double factor);
 
        void update_note (NoteBase*, bool update_ghost_regions = true);
        void update_sustained (Note *, bool update_ghost_regions = true);
        void update_hit (Hit *, bool update_ghost_regions = true);
 
        void create_ghost_note (double, double, uint32_t state);
        void update_ghost_note (double, double, uint32_t state);
 
        MidiListEditor* _list_editor;
        bool _no_sound_notes;
 
        void snap_changed ();
        PBD::ScopedConnection snap_changed_connection;
 
        bool motion (GdkEventMotion*);
        bool scroll (GdkEventScroll*);
        bool key_press (GdkEventKey*);
        bool key_release (GdkEventKey*);
        bool button_press (GdkEventButton*);
        bool button_release (GdkEventButton*);
        bool enter_notify (GdkEventCrossing*);
        bool leave_notify (GdkEventCrossing*);
 
        void drop_down_keys ();
        void maybe_select_by_position (GdkEventButton* ev, double x, double y);
        void get_events (Events& e, Evoral::Sequence<Temporal::Beats>::NoteOperator op, uint8_t val, int chan_mask = 0);
 
        void display_patch_changes_on_channel (uint8_t, bool, PatchChanges&);
 
        void connect_to_diskstream ();
        void data_recorded (std::weak_ptr<ARDOUR::MidiSource>);
 
        Temporal::Beats get_grid_beats(Temporal::timepos_t const & pos) const;
 
        Temporal::Beats get_draw_length_beats(Temporal::timepos_t const & pos) const;
 
        void remove_ghost_note ();
        void mouse_mode_changed ();
        void enter_internal (uint32_t state);
        void leave_internal ();
        void hide_verbose_cursor ();
 
        samplecnt_t _last_display_zoom;
 
        double    _last_event_x;
        double    _last_event_y;
        bool      _entered;
        NoteBase* _entered_note;
        bool      _select_all_notes_after_add;
 
        bool _mouse_changed_selection;
 
        Gtkmm2ext::Color _patch_change_outline;
        Gtkmm2ext::Color _patch_change_fill;
 
        PBD::ScopedConnection _mouse_mode_connection;
 
        std::shared_ptr<CursorContext> _press_cursor_ctx;
 
        ARDOUR::ChannelMode get_channel_mode() const;
        uint16_t get_selected_channels () const;
 
        inline double contents_height() const { return (_height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2); }
        inline double contents_note_range () const { return (double)(_current_range_max - _current_range_min + 1); }
        inline double note_height() const { return contents_height() / contents_note_range(); }
 
        double note_to_y (uint8_t note) const;
        uint8_t y_to_note (double y) const;
 
        void update_patch_changes ();
        void update_sysexes ();
        void view_changed ();
        void model_changed ();
 
        void sync_ghost_selection (NoteBase*);
 
        struct SplitInfo {
                Temporal::Beats time;
                Temporal::Beats base_len;
                int             note;
                int             channel;
                int             velocity;
                int             off_velocity;
 
                SplitInfo (Temporal::Beats const & t, Temporal::Beats const & l, int n, int c, int v, int ov)
                        : time (t)
                        , base_len (l)
                        , note (n)
                        , channel (c)
                        , velocity (v)
                        , off_velocity (ov) {}
        };
        std::vector<SplitInfo> split_info;
 
        uint32_t split_tuple;
        bool     note_splitting;
 
        void start_note_splitting ();
        void end_note_splitting ();
 
        void split_notes_grid ();
        void split_notes_more ();
        void split_notes_less ();
        void join_notes ();
        void join_notes_on_channel (int channel);
 
        void add_split_notes ();
};
 
 
#endif /* __gtk_ardour_midi_region_view_h__ */