gtk2_ardour/midi_channel_selector.h

   1 #ifndef __ardour_ui_midi_channel_selector_h__
   2 #define __ardour_ui_midi_channel_selector_h__
   3
   4 #include "boost/shared_ptr.hpp"
   5 #include "gtkmm/table.h"
   6 #include "sigc++/trackable.h"
   7 #include "gtkmm/button.h"
   8 #include "gtkmm/togglebutton.h"
   9 #include "gtkmm/label.h"
  10 #include <set>
  11
  12 class MidiChannelSelector : public Gtk::Table
  13 {
  14 public:
  15         MidiChannelSelector(int no_rows = 4, int no_columns = 4, int start_row = 0, int start_column = 0);
  16         virtual ~MidiChannelSelector() = 0;
  17
  18 protected:
  19         virtual void button_toggled(Gtk::ToggleButton *button, uint8_t button_nr) = 0;
  20         Gtk::Label        _button_labels[4][4];
  21         Gtk::ToggleButton _buttons[4][4];
  22         int               _recursion_counter;
  23 };
  24
  25 class SingleMidiChannelSelector : public MidiChannelSelector
  26 {
  27 public:
  28         SingleMidiChannelSelector(uint8_t active_channel = 0);
  29
  30         const uint8_t get_active_channel() const { return _active_channel; }
  31
  32         sigc::signal<void, uint8_t> channel_selected;
  33
  34 protected:
  35         virtual void button_toggled(Gtk::ToggleButton *button, uint8_t button_nr);
  36
  37         Gtk::ToggleButton* _last_active_button;
  38         uint8_t            _active_channel;
  39 };
  40
  41 class MidiMultipleChannelSelector : public MidiChannelSelector
  42 {
  43 public:
  44         MidiMultipleChannelSelector(uint16_t initial_selection = 0xFFFF, int8_t force_channel = -1);
  45         virtual ~MidiMultipleChannelSelector();
  46
  47         /**
  48          * @return each bit in the returned word represents a midi channel, eg.
  49          *         bit 0 represents channel 0 and bit 15 represents channel 15
  50          *
  51          */
  52         const uint16_t get_selected_channels() const;
  53         void set_selected_channels(uint16_t selected_channels);
  54
  55         sigc::signal<void, uint16_t> selection_changed;
  56         sigc::signal<void, int8_t>   force_channel_changed;
  57
  58         const int8_t get_force_channel() const;
  59         void set_force_channel(int8_t force_channel);
  60 protected:
  61         enum Mode {
  62                 FILTERING_MULTIPLE_CHANNELS,
  63                 FORCING_SINGLE_CHANNEL
  64         };
  65
  66         Mode _mode;
  67
  68         virtual void button_toggled(Gtk::ToggleButton *button, uint8_t button_nr);
  69         void force_channels_button_toggled();
  70
  71         void select_all(bool on);
  72         void invert_selection(void);
  73
  74         Gtk::Button            _select_all;
  75         Gtk::Button            _select_none;
  76         Gtk::Button            _invert_selection;
  77         Gtk::ToggleButton      _force_channel;
  78 };
  79
  80 #endif /*__ardour_ui_midi_channel_selector_h__*/