midi_streamview.h

Go to the documentation of this file.

/*
    Copyright (C) 2001, 2006 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_midi_streamview_h__
#define __ardour_midi_streamview_h__

#include <list>
#include <cmath>

#include "ardour/location.h"
#include "enums.h"
#include "streamview.h"
#include "time_axis_view_item.h"
#include "route_time_axis.h"

namespace Gdk {
        class Color;
}

namespace ARDOUR {
        class Crossfade;
        class MidiModel;
        class MidiRegion;
        class Route;
        class Source;
        struct PeakData;
}

namespace ArdourCanvas {
        class LineSet;
}

class PublicEditor;
class Selectable;
class MidiTimeAxisView;
class MidiRegionView;
class RegionSelection;
class CrossfadeView;
class Selection;

class MidiStreamView : public StreamView
{
  public:
        MidiStreamView (MidiTimeAxisView&);
        ~MidiStreamView ();

        void set_selected_regionviews (RegionSelection&);
        void get_inverted_selectables (Selection&, std::list<Selectable* >& results);

        enum VisibleNoteRange {
                FullRange,
                ContentsRange
        };

        Gtk::Adjustment note_range_adjustment;
        ArdourCanvas::Container* midi_underlay_group;

        void set_note_range(VisibleNoteRange r);

        inline uint8_t lowest_note()  const { return _lowest_note; }
        inline uint8_t highest_note() const { return _highest_note; }

        void update_note_range(uint8_t note_num);

        void redisplay_track ();

        inline double contents_height() const
        { return (child_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2); }

        inline double note_to_y(uint8_t note) const
                { return contents_height()
                        - (note + 1 - lowest_note()) * note_height() + 1; }

        uint8_t y_to_note(double y) const;

        inline double note_height() const
                { return contents_height() / (double)contents_note_range(); }

        inline uint8_t contents_note_range() const
                { return highest_note() - lowest_note() + 1; }

        sigc::signal<void> NoteRangeChanged;

        RegionView* create_region_view (boost::shared_ptr<ARDOUR::Region>, bool, bool);

        bool paste (ARDOUR::framepos_t pos, const Selection& selection, PasteContext& ctx);

        void apply_note_range(uint8_t lowest, uint8_t highest, bool to_region_views);

        void suspend_updates ();
        void resume_updates ();

  protected:
        void setup_rec_box ();
        void update_rec_box ();

  private:

        RegionView* add_region_view_internal (
                boost::shared_ptr<ARDOUR::Region>,
                bool wait_for_waves,
                bool recording = false);

        void display_region(MidiRegionView* region_view, bool load_model);
        void display_track (boost::shared_ptr<ARDOUR::Track> tr);

        void update_contents_height ();

        void draw_note_lines();
        bool update_data_note_range(uint8_t min, uint8_t max);
        void update_contents_metrics(boost::shared_ptr<ARDOUR::Region> r);

        void color_handler ();

        void note_range_adjustment_changed();
        void apply_note_range_to_regions ();

        bool                      _range_dirty;
        double                    _range_sum_cache;
        uint8_t                   _lowest_note;   
        uint8_t                   _highest_note;  
        uint8_t                   _data_note_min; 
        uint8_t                   _data_note_max; 
        ArdourCanvas::LineSet*    _note_lines;
        bool                      _updates_suspended;
};

#endif /* __ardour_midi_streamview_h__ */