ghostregion.h

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/*
    Copyright (C) 2004 Paul Davis

    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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __ardour_gtk_ghost_region_h__
#define __ardour_gtk_ghost_region_h__

#include <vector>
#include "pbd/signals.h"

namespace ArdourCanvas {
        class WaveView;
}

class NoteBase;
class Note;
class Hit;
class MidiStreamView;
class TimeAxisView;

class GhostRegion : public sigc::trackable
{
public:
        GhostRegion(ArdourCanvas::Container* parent, TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos);
        virtual ~GhostRegion();

        virtual void set_samples_per_pixel (double) = 0;
        virtual void set_height();
        virtual void set_colors();

        void set_duration(double units);

        guint source_track_color(unsigned char alpha = 0xff);
        bool is_automation_ghost();

        TimeAxisView& trackview;
        TimeAxisView& source_trackview;
        ArdourCanvas::Container* group;
        ArdourCanvas::Rectangle* base_rect;

        static PBD::Signal1<void,GhostRegion*> CatchDeletion;
};

class AudioGhostRegion : public GhostRegion {
public:
        AudioGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos);

        void set_samples_per_pixel (double);
        void set_height();
        void set_colors();

        std::vector<ArdourCanvas::WaveView*> waves;
};

class MidiGhostRegion : public GhostRegion {
public:
        class GhostEvent : public sigc::trackable {
          public:
            GhostEvent(::NoteBase *, ArdourCanvas::Container *);
            virtual ~GhostEvent ();
            
            NoteBase* event;
            ArdourCanvas::Item* item;
        };

        MidiGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos);
        MidiGhostRegion(MidiStreamView& msv, TimeAxisView& source_tv, double initial_unit_pos);
        ~MidiGhostRegion();

        MidiStreamView* midi_view();

        void set_height();
        void set_samples_per_pixel (double spu);
        void set_colors();

        void update_range();

        void add_note(NoteBase*);
        void update_note (NoteBase*);
        void remove_note (NoteBase*);

        void clear_events();

private:

        MidiGhostRegion::GhostEvent* find_event (NoteBase*);

        typedef std::list<MidiGhostRegion::GhostEvent*> EventList;
        EventList events;
        EventList::iterator _optimization_iterator;
};

#endif /* __ardour_gtk_ghost_region_h__ */