midi_streamview.h

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/*
 * Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
 * Copyright (C) 2007 Doug McLain <doug@nostar.net>
 * Copyright (C) 2008-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2016-2017 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 __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 get_inverted_selectables (Selection&, std::list<Selectable* >& results);
        void get_regions_with_selected_data (RegionSelection&);
 
        enum VisibleNoteRange {
                FullRange,
                ContentsRange
        };
 
        Gtk::Adjustment note_range_adjustment;
 
        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 set_layer_display (LayerDisplay);
        //bool can_change_layer_display() const { return false; } // revert this change for now.  Although stacked view is weirdly implemented wrt the "scroomer", it is still necessary to be able to manage layered regions.
        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 (std::shared_ptr<ARDOUR::Region>, bool, bool);
 
        bool paste (Temporal::timepos_t const & 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 ();
 
        ArdourCanvas::Container* region_canvas () const { return _region_group; }
 
        void parameter_changed (std::string const &);
 
protected:
        void setup_rec_box ();
        void update_rec_box ();
 
        ArdourCanvas::Container* _region_group;
 
private:
 
        RegionView* add_region_view_internal (
                        std::shared_ptr<ARDOUR::Region>,
                        bool wait_for_waves,
                        bool recording = false);
 
        void display_region(MidiRegionView* region_view, bool load_model);
        void display_track (std::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(std::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__ */