streamview.h

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/*
 * Copyright (C) 2005-2019 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2005 Nick Mainsbridge <mainsbridge@gmail.com>
 * Copyright (C) 2005 Taybin Rutkin <taybin@taybin.com>
 * Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
 * Copyright (C) 2007-2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2007 Doug McLain <doug@nostar.net>
 * Copyright (C) 2015-2019 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 <list>
#include <cmath>
 
#include "pbd/signals.h"
 
#include "ardour/location.h"
 
#include "enums.h"
#include "selectable.h"
#include "time_axis_view_item.h"
#include "view_background.h"
 
namespace Gdk {
        class Color;
}
 
namespace ARDOUR {
        class Crossfade;
        class Region;
        class Route;
        class Source;
        class Track;
        struct PeakData;
}
 
namespace ArdourCanvas {
        class Rectangle;
        class Container;
}
 
struct RecBoxInfo {
        ArdourCanvas::Rectangle* rectangle;
        samplepos_t              start;
        ARDOUR::samplecnt_t      length;
};
 
class RouteTimeAxisView;
class RegionView;
class RegionSelection;
class CrossfadeView;
class Selection;
 
class StreamView : public PBD::ScopedConnectionList, public virtual ViewBackground, public SelectableOwner
{
public:
        virtual ~StreamView ();
 
        RouteTimeAxisView&       trackview()       { return _trackview; }
        const RouteTimeAxisView& trackview() const { return _trackview; }
 
        void attach ();
 
        void set_zoom_all();
 
        int height() const;
        int width() const;
        int contents_height() const {
                return child_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
        }
        int y_position () const;
 
        int set_position (gdouble x, gdouble y);
        virtual int set_height (double);
 
        virtual int set_samples_per_pixel (double);
        gdouble     get_samples_per_pixel () const { return _samples_per_pixel; }
 
        virtual void set_layer_display (LayerDisplay);
        virtual bool can_change_layer_display() const { return true; }
        LayerDisplay layer_display () const { return _layer_display; }
 
        virtual ArdourCanvas::Container* region_canvas () const { return _canvas_group; }
 
        enum ColorTarget {
                RegionColor,
                StreamBaseColor
        };
 
        void     apply_color (uint32_t, ColorTarget t);
        void     apply_color (Gdk::Color const &, ColorTarget t);
 
        uint32_t     num_selected_regionviews () const;
 
        RegionView*  find_view (std::shared_ptr<const ARDOUR::Region>);
        void         foreach_regionview (sigc::slot<void,RegionView*> slot);
        void         foreach_selected_regionview (sigc::slot<void,RegionView*> slot);
 
        void set_selected_regionviews (RegionSelection&);
        void _get_selectables (Temporal::timepos_t const &, Temporal::timepos_t const &, double, double, std::list<Selectable* >&, bool within);
        void get_inverted_selectables (Selection&, std::list<Selectable* >& results);
        void get_regionviews_at_or_after (Temporal::timepos_t const &, RegionSelection&);
 
        virtual void update_contents_metrics(std::shared_ptr<ARDOUR::Region>) {}
 
        void add_region_view (std::weak_ptr<ARDOUR::Region>);
 
        void region_layered (RegionView*);
        virtual void update_contents_height ();
 
        virtual void redisplay_track () = 0;
        double child_height () const;
        ARDOUR::layer_t layers () const { return _layers; }
 
        virtual RegionView* create_region_view (std::shared_ptr<ARDOUR::Region>, bool, bool) {
                return 0;
        }
 
        void check_record_layers (std::shared_ptr<ARDOUR::Region>, ARDOUR::samplepos_t);
 
        virtual void playlist_layered (std::weak_ptr<ARDOUR::Track>);
        void update_coverage_frame ();
 
        sigc::signal<void, RegionView*> RegionViewAdded;
        sigc::signal<void> RegionViewRemoved;
        sigc::signal<void> ContentsHeightChanged;
 
        virtual void parameter_changed (std::string const &);
 
protected:
        StreamView (RouteTimeAxisView&, ArdourCanvas::Container* canvas_group = 0);
 
        void transport_changed();
        void transport_looped();
        void rec_enable_changed();
        void sess_rec_enable_changed();
        void create_rec_box(samplepos_t sample_pos, double width);
        void cleanup_rec_box ();
 
        virtual void setup_rec_box () = 0;
        virtual void update_rec_box ();
 
        virtual RegionView* add_region_view_internal (std::shared_ptr<ARDOUR::Region>,
                      bool wait_for_waves, bool recording = false) = 0;
        virtual void remove_region_view (std::weak_ptr<ARDOUR::Region> );
 
        void         display_track (std::shared_ptr<ARDOUR::Track>);
        virtual void undisplay_track ();
        void layer_regions ();
 
        void playlist_switched (std::weak_ptr<ARDOUR::Track>);
 
        virtual void color_handler () = 0;
 
        RouteTimeAxisView&       _trackview;
        ArdourCanvas::Container* _canvas_group;
        ArdourCanvas::Rectangle*  canvas_rect; /* frame around the whole thing */
 
        typedef std::list<RegionView* > RegionViewList;
        RegionViewList region_views;
 
        double _samples_per_pixel;
 
        sigc::connection        screen_update_connection;
        std::vector<RecBoxInfo> rec_rects;
        std::list< std::pair<std::shared_ptr<ARDOUR::Region>,RegionView* > > rec_regions;
        bool                    rec_updating;
        bool                    rec_active;
 
        uint32_t stream_base_color; 
 
        PBD::ScopedConnectionList playlist_connections;
        PBD::ScopedConnection playlist_switched_connection;
 
        ARDOUR::layer_t _layers;
        LayerDisplay    _layer_display;
 
        double _height;
 
        PBD::ScopedConnectionList rec_data_ready_connections;
        samplepos_t               last_rec_data_sample;
 
        /* When recording, the session time at which a new layer must be created for the region
           being recorded, or max_samplepos if not applicable.
        */
        samplepos_t _new_rec_layer_time;
        void setup_new_rec_layer_time (std::shared_ptr<ARDOUR::Region>);
};