midi_cue_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.
 */
 
#pragma once
 
#include <map>
 
#include "ardour/types.h"
 
#include "midi_view.h"
 
class VelocityDisplay;
class MidiCueAutomationLine;
 
namespace ArdourCanvas {
        class Box;
}
 
class MidiCueView : public MidiView
{
  public:
        MidiCueView (std::shared_ptr<ARDOUR::MidiTrack> mt,
                     ArdourCanvas::Item&         parent,
                     ArdourCanvas::Item&         noscroll_parent,
                     EditingContext&             ec,
                     MidiViewBackground&         bg,
                     uint32_t                    basic_color
                );
 
        ~MidiCueView();
 
        void set_samples_per_pixel (double);
        void set_height (double);
 
        void clear_ghost_events();
        void ghosts_model_changed();
        void ghosts_view_changed();
        void ghost_remove_note (NoteBase*);
        void ghost_add_note (NoteBase*);
        void ghost_sync_selection (NoteBase*);
 
        void update_automation_display (Evoral::Parameter const & param, ARDOUR::SelectionOperation);
        void swap_automation_channel (int);
        void set_active_automation (Evoral::Parameter const &);
        bool is_active_automation (Evoral::Parameter const &) const;
        bool is_visible_automation (Evoral::Parameter const &) const;
 
        ArdourCanvas::Item* drag_group() const;
 
        std::list<SelectableOwner*> selectable_owners();
        MergeableLine* make_merger ();
 
        bool automation_rb_click (GdkEvent*, Temporal::timepos_t const &);
        void line_drag_click (GdkEvent*, Temporal::timepos_t const &);
 
        void automation_entry();
        void automation_leave ();
 
        sigc::signal<void> AutomationStateChange;
 
  protected:
        bool scroll (GdkEventScroll* ev);
 
        ArdourCanvas::Rectangle* automation_group;
 
        typedef std::shared_ptr<MidiCueAutomationLine>  CueAutomationLine;
        typedef std::shared_ptr<ARDOUR::AutomationControl>  CueAutomationControl;
 
        struct AutomationDisplayState {
 
                AutomationDisplayState (CueAutomationControl ctl, CueAutomationLine ln, bool vis)
                        : control (ctl), line (ln), velocity_display (nullptr), visible (vis) {}
                AutomationDisplayState (VelocityDisplay& vdisp, bool vis)
                        : control (nullptr), line (nullptr), velocity_display (&vdisp), visible (vis) {}
 
                ~AutomationDisplayState();
 
                CueAutomationControl control;
                CueAutomationLine line;
                VelocityDisplay* velocity_display;
                bool visible;
 
                void hide ();
                void show ();
                void set_height (double);
        };
 
        typedef std::map<Evoral::Parameter, AutomationDisplayState> CueAutomationMap;
 
        CueAutomationMap automation_map;
        AutomationDisplayState* active_automation;
 
        VelocityDisplay* velocity_display;
 
        std::shared_ptr<Temporal::TempoMap const> tempo_map;
        ArdourCanvas::Rectangle* event_rect;
 
        void update_sustained (Note *);
        void update_hit (Hit *);
 
        double _height;
 
        bool internal_set_active_automation (Evoral::Parameter const &);
        void unset_active_automation ();
};