code.delx.au - virtualtones/blob - instrument.h

   1 // instrument.h - An instrument widget
   2 // Written by James Bunton <james@delx.net.au>
   3 // Licensed under the GPL, see COPYING.txt for more details
   4
   5
   6 #ifndef INSTRUMENT_H
   7 #define INSTRUMENT_H
   8
   9 #include <qwidget.h>
  10 #include <qevent.h>
  11 #include <qpixmap.h>
  12 #include <qpainter.h>
  13 #include <qmessagebox.h>
  14
  15
  16 #if QT_VERSION < 300
  17 #define setPaletteBackgroundPixmap setBackgroundPixmap
  18 #endif
  19
  20
  21 class Instrument : public QWidget
  22 {
  23 Q_OBJECT
  24         public:
  25                 Instrument(QWidget *parent);
  26                 ~Instrument();
  27
  28                 bool setNoteStart(int note);
  29                 int getNoteStart();
  30
  31         public slots:
  32                 void setStartOctave(int octave); // Middle C is in octave 5
  33                 void displayHelp();
  34
  35         protected:
  36                 virtual QString generateHelp()=0;
  37                 void focusOutEvent(QFocusEvent *);
  38                 bool event(QEvent *e);
  39                 QString midi2string(int num);
  40                 bool checkSharp(int num);
  41                 int noteStart;
  42
  43         private:
  44                 // The base midi notes
  45                 QString midnotes[12];
  46
  47                 // Make the function pure virtual
  48                 virtual void emitSounds()=0;
  49
  50         signals:
  51                 void playNote(int, int, int); // Note number, volume, length
  52                 void stopNote(int); // Note number
  53 };
  54
  55
  56
  57 #endif