gtk2_ardour/marker.h

   1 /*
   2     Copyright (C) 2001 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef __gtk_ardour_marker_h__
  21 #define __gtk_ardour_marker_h__
  22
  23 #include <string>
  24 #include <glib.h>
  25
  26 #include <libgnomecanvasmm/pixbuf.h>
  27 #include <sigc++/signal.h>
  28
  29 #include "ardour/ardour.h"
  30 #include "pbd/signals.h"
  31
  32 #include "canvas.h"
  33
  34 namespace ARDOUR {
  35         class TempoSection;
  36         class MeterSection;
  37 }
  38
  39 class PublicEditor;
  40
  41 class Marker : public sigc::trackable
  42 {
  43   public:
  44         enum Type {
  45                 Mark,
  46                 Tempo,
  47                 Meter,
  48                 Start, ///< session start
  49                 End,   ///< session end
  50                 LoopStart,
  51                 LoopEnd,
  52                 PunchIn,
  53                 PunchOut
  54         };
  55
  56
  57         Marker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const std::string& text, Type,
  58                 nframes_t frame = 0, bool handle_events = true);
  59
  60         virtual ~Marker ();
  61
  62         static PBD::Signal1<void,Marker*> CatchDeletion;
  63
  64         ArdourCanvas::Item& the_item() const;
  65
  66         void add_line (ArdourCanvas::Group*, double y_origin, double initial_height);
  67         void show_line ();
  68         void hide_line ();
  69         void set_line_vpos (double y_origin, double height);
  70
  71         void set_position (nframes64_t);
  72         void set_name (const std::string&);
  73         void set_color_rgba (uint32_t rgba);
  74
  75         nframes64_t position() const { return frame_position; }
  76
  77         ArdourCanvas::Group * get_parent() { return _parent; }
  78         void reparent (ArdourCanvas::Group & parent);
  79
  80         void hide ();
  81         void show ();
  82
  83         Type type () { return _type; }
  84
  85   protected:
  86         PublicEditor& editor;
  87
  88         Pango::FontDescription* name_font;
  89
  90         ArdourCanvas::Group * _parent;
  91         ArdourCanvas::Group *group;
  92         ArdourCanvas::Polygon *mark;
  93         ArdourCanvas::Pixbuf *name_pixbuf;
  94         ArdourCanvas::Points *points;
  95         ArdourCanvas::SimpleLine *line;
  96         ArdourCanvas::Points *line_points;
  97
  98         double        unit_position;
  99         nframes64_t   frame_position;
 100         unsigned char shift; /* should be double, but its always small and integral */
 101         Type          _type;
 102         int           name_height;
 103
 104         void reposition ();
 105 };
 106
 107 class TempoMarker : public Marker
 108 {
 109   public:
 110         TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const std::string& text, ARDOUR::TempoSection&);
 111         ~TempoMarker ();
 112
 113         ARDOUR::TempoSection& tempo() const { return _tempo; }
 114
 115   private:
 116         ARDOUR::TempoSection& _tempo;
 117 };
 118
 119 class MeterMarker : public Marker
 120 {
 121   public:
 122         MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const std::string& text, ARDOUR::MeterSection&);
 123         ~MeterMarker ();
 124
 125         ARDOUR::MeterSection& meter() const { return _meter; }
 126
 127   private:
 128         ARDOUR::MeterSection& _meter;
 129 };
 130
 131 #endif /* __gtk_ardour_marker_h__ */