gtk2_ardour/piano_roll_header.h

   1 /*
   2     Copyright (C) 2008 Paul Davis
   3     Author: Audan Holland ??
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #ifndef __ardour_piano_roll_header_h__
  21 #define __ardour_piano_roll_header_h__
  22
  23 #include "ardour/types.h"
  24
  25 #include <gtkmm/drawingarea.h>
  26
  27 namespace ARDOUR {
  28         class MidiTrack;
  29 }
  30
  31 class MidiTimeAxisView;
  32 class MidiStreamView;
  33
  34 class PianoRollHeader : public Gtk::DrawingArea {
  35 public:
  36         PianoRollHeader(MidiStreamView&);
  37
  38         bool on_expose_event (GdkEventExpose*);
  39         bool on_motion_notify_event (GdkEventMotion*);
  40         bool on_button_press_event (GdkEventButton*);
  41         bool on_button_release_event (GdkEventButton*);
  42         bool on_scroll_event (GdkEventScroll*);
  43         bool on_enter_notify_event (GdkEventCrossing*);
  44         bool on_leave_notify_event (GdkEventCrossing*);
  45
  46         void on_size_request(Gtk::Requisition*);
  47         void on_size_allocate(Gtk::Allocation& a);
  48
  49         void note_range_changed();
  50
  51         struct Color {
  52                 Color();
  53                 Color(double _r, double _g, double _b);
  54                 inline void set(const Color& c);
  55
  56                 double r;
  57                 double g;
  58                 double b;
  59         };
  60
  61         sigc::signal<void,uint8_t> AddNoteSelection;
  62         sigc::signal<void,uint8_t> ToggleNoteSelection;
  63         sigc::signal<void,uint8_t> ExtendNoteSelection;
  64
  65 private:
  66         static Color white;
  67         static Color white_highlight;
  68         static Color white_shade_light;
  69         static Color white_shade_dark;
  70         static Color black;
  71         static Color black_highlight;
  72         static Color black_shade_light;
  73         static Color black_shade_dark;
  74
  75         PianoRollHeader(const PianoRollHeader&);
  76
  77         enum ItemType {
  78                 BLACK_SEPARATOR,
  79                 BLACK_MIDDLE_SEPARATOR,
  80                 BLACK,
  81                 WHITE_SEPARATOR,
  82                 WHITE_RECT,
  83                 WHITE_CF,
  84                 WHITE_EB,
  85                 WHITE_DGA
  86         };
  87
  88         void invalidate_note_range(int lowest, int highest);
  89
  90         void get_path(ItemType, int note, double x[], double y[]);
  91
  92         void send_note_on(uint8_t note);
  93         void send_note_off(uint8_t note);
  94
  95         MidiStreamView& _view;
  96
  97         uint8_t _event[3];
  98
  99         Cairo::RefPtr<Cairo::Context> cc;
 100         bool _active_notes[128];
 101         uint8_t _highlighted_note;
 102         uint8_t _clicked_note;
 103         double _grab_y;
 104         bool _dragging;
 105
 106         double _note_height;
 107         double _black_note_width;
 108 };
 109
 110 #endif /* __ardour_piano_roll_header_h__ */