velocity_display.h

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/*
 * Copyright (C) 2007-2014 David Robillard <d@drobilla.net>
 * Copyright (C) 2009-2010 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2009-2017 Paul Davis <paul@linuxaudiosystems.com>
 *
 * 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 <sigc++/trackable.h>
 
#include "canvas/rectangle.h"
#include "canvas/poly_line.h"
 
#include "gtkmm2ext/colors.h"
 
#include "ghost_event.h"
 
namespace ArdourCanvas {
        class Container;
        class Lollipop;
        class Rectangle;
}
 
class EditingContext;
class MidiViewBackground;
class MidiView;
class NoteBase;
 
class VelocityDisplay : virtual public sigc::trackable
{
  public:
        VelocityDisplay (EditingContext&, MidiViewBackground&, MidiView&, ArdourCanvas::Rectangle& base_rect, GhostEvent::EventList& el, Gtkmm2ext::Color oc);
        virtual ~VelocityDisplay ();
 
        void hide ();
        void show ();
 
        void redisplay();
        void add_note(NoteBase*);
 
        void update_note (NoteBase*);
 
        void update_ghost_event (GhostEvent*);
        void color_ghost_event (GhostEvent*);
        void update_note (GhostEvent* gev) { update_ghost_event (gev); }
        void update_hit (GhostEvent* gev)  { update_ghost_event (gev); }
 
        virtual void remove_note (NoteBase*) = 0;
        void note_selected (NoteBase*);
        void clear ();
 
        void set_colors ();
        void drag_lolli (ArdourCanvas::Lollipop* l, GdkEventMotion* ev);
 
        int y_position_to_velocity (double y) const;
 
        void set_sensitive (bool yn);
        bool sensitive () const;
 
        bool line_draw_motion (ArdourCanvas::Duple const & d, ArdourCanvas::Rectangle const & r, double last_x);
        bool line_extended (ArdourCanvas::Duple const & from, ArdourCanvas::Duple const & to, ArdourCanvas::Rectangle const & r, double last_x);
 
        void start_line_drag ();
        void end_line_drag (bool did_change);
 
        ArdourCanvas::Rectangle& base_item() { return base; }
        MidiView& midi_view() const { return view; }
 
  protected:
        virtual bool lollevent (GdkEvent*, GhostEvent*) = 0;
 
        EditingContext& editing_context;
        MidiViewBackground& bg;
        MidiView& view;
        ArdourCanvas::Rectangle& base;
        GhostEvent::EventList& events;
        Gtkmm2ext::Color _outline;
        bool dragging;
        ArdourCanvas::PolyLine* dragging_line;
        int last_drag_x;
        bool drag_did_change;
        bool selected;
        GhostEvent::EventList::iterator _optimization_iterator;
        bool _sensitive;
        sigc::connection base_connection;
 
        virtual bool base_event (GdkEvent*) = 0;
        void set_size_and_position (GhostEvent&);
        void lollis_close_to_x (int x, double distance, std::vector<GhostEvent*>& events);
        void lollis_between (int x0, int x1, std::vector<GhostEvent*>& events);
        void desensitize_lollis ();
        void sensitize_lollis ();
};