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marker.h

/*
    Copyright (C) 2001 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 __gtk_ardour_marker_h__
#define __gtk_ardour_marker_h__

#include <string>
#include <glib.h>
#include <ardour/ardour.h>
#include <pbd/destructible.h>

#include <libgnomecanvasmm/pixbuf.h>

#include "canvas.h"

namespace ARDOUR {
      class TempoSection;
      class MeterSection;
}

class PublicEditor;

class Marker : public PBD::Destructible
{
  public:
      enum Type {
            Mark,
            Tempo,
            Meter,
            Start,
            End,
            LoopStart,
            LoopEnd,
            PunchIn,
            PunchOut
      };


      Marker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text, Type, 
            nframes_t frame = 0, bool handle_events = true);

      virtual ~Marker ();

      ArdourCanvas::Item& the_item() const;

      void add_line (ArdourCanvas::Group*, double y_origin, double initial_height);
      void show_line ();
      void hide_line ();
      void set_line_vpos (double y_origin, double height);

      void set_position (nframes_t);
      void set_name (const string&);
      void set_color_rgba (uint32_t rgba);
      
      nframes64_t position() const { return frame_position; }

      ArdourCanvas::Group * get_parent() { return _parent; }
      void reparent (ArdourCanvas::Group & parent);
      
      void hide ();
      void show ();

      Type type () { return _type; }

  protected:
      PublicEditor& editor;

      Pango::FontDescription* name_font;

      ArdourCanvas::Group * _parent;
      ArdourCanvas::Group *group;
      ArdourCanvas::Polygon *mark;
      ArdourCanvas::Pixbuf *name_pixbuf;
      ArdourCanvas::Points *points;
      ArdourCanvas::SimpleLine *line;
      ArdourCanvas::Points *line_points;

      double        unit_position;
      nframes64_t   frame_position;
      unsigned char shift; /* should be double, but its always small and integral */
      Type          _type;
      int           name_height;
      std::string   _annotation;

      void reposition ();
      void color_handler ();
};

class TempoMarker : public Marker
{
  public:
        TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text, ARDOUR::TempoSection&);
      ~TempoMarker ();

      ARDOUR::TempoSection& tempo() const { return _tempo; }

  private:
      ARDOUR::TempoSection& _tempo;
};

class MeterMarker : public Marker
{
  public:
        MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text, ARDOUR::MeterSection&);
      ~MeterMarker ();

      ARDOUR::MeterSection& meter() const { return _meter; }

  private:
      ARDOUR::MeterSection& _meter;
};

#endif /* __gtk_ardour_marker_h__ */

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