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                 SessionStart, ///< session start
  49                 SessionEnd,   ///< session end
  50                 RangeStart,
  51                 RangeEnd,
  52                 LoopStart,
  53                 LoopEnd,
  54                 PunchIn,
  55                 PunchOut
  56         };
  57
  58
  59         Marker (PublicEditor& editor, ArdourCanvas::Group &, guint32 rgba, const std::string& text, Type,
  60                 framepos_t frame = 0, bool handle_events = true);
  61
  62         virtual ~Marker ();
  63
  64         static PBD::Signal1<void,Marker*> CatchDeletion;
  65
  66         ArdourCanvas::Item& the_item() const;
  67
  68         void set_selected (bool);
  69         void set_show_line (bool);
  70         void canvas_height_set (double);
  71
  72         void set_position (framepos_t);
  73         void set_name (const std::string&);
  74         void set_color_rgba (uint32_t rgba);
  75         void setup_line ();
  76
  77         framepos_t position() const { return frame_position; }
  78
  79         ArdourCanvas::Group * get_parent() { return _parent; }
  80         void reparent (ArdourCanvas::Group & parent);
  81
  82         void hide ();
  83         void show ();
  84
  85         Type type () { return _type; }
  86
  87         void set_left_label_limit (double);
  88         void set_right_label_limit (double);
  89
  90         std::string name () const {
  91                 return _name;
  92         }
  93
  94         bool label_on_left () const;
  95
  96   protected:
  97         PublicEditor& editor;
  98
  99         Pango::FontDescription name_font;
 100
 101         ArdourCanvas::Group* _parent;
 102         ArdourCanvas::Group *group;
 103         ArdourCanvas::Polygon *mark;
 104         ArdourCanvas::Pixbuf *name_pixbuf;
 105         ArdourCanvas::Points *points;
 106         ArdourCanvas::SimpleLine* _line;
 107         ArdourCanvas::Points *line_points;
 108         ArdourCanvas::SimpleRect* _name_background;
 109
 110         std::string  _name;
 111         double        unit_position;
 112         framepos_t    frame_position;
 113         double       _shift;
 114         Type         _type;
 115         int           name_height;
 116         bool         _selected;
 117         bool         _shown;
 118         bool         _line_shown;
 119         double       _canvas_height;
 120         uint32_t     _color;
 121         double       _left_label_limit; ///< the number of pixels available to the left of this marker for a label
 122         double       _right_label_limit; ///< the number of pixels available to the right of this marker for a label
 123         double       _label_offset;
 124
 125         void reposition ();
 126         void setup_line_x ();
 127         void setup_name_display ();
 128
 129 private:
 130         /* disallow copy construction */
 131         Marker (Marker const &);
 132         Marker & operator= (Marker const &);
 133 };
 134
 135 class TempoMarker : public Marker
 136 {
 137   public:
 138         TempoMarker (PublicEditor& editor, ArdourCanvas::Group &, guint32 rgba, const std::string& text, ARDOUR::TempoSection&);
 139         ~TempoMarker ();
 140
 141         ARDOUR::TempoSection& tempo() const { return _tempo; }
 142
 143   private:
 144         ARDOUR::TempoSection& _tempo;
 145 };
 146
 147 class MeterMarker : public Marker
 148 {
 149   public:
 150         MeterMarker (PublicEditor& editor, ArdourCanvas::Group &, guint32 rgba, const std::string& text, ARDOUR::MeterSection&);
 151         ~MeterMarker ();
 152
 153         ARDOUR::MeterSection& meter() const { return _meter; }
 154
 155   private:
 156         ARDOUR::MeterSection& _meter;
 157 };
 158
 159 #endif /* __gtk_ardour_marker_h__ */