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  | 
//=========================================================
//  MusE
//  Linux Music Editor
//    software synthesizer helper library
//    $Id: gui.h,v 1.5 2005/05/11 14:18:48 wschweer Exp $
//
//  (C) Copyright 2004 Werner Schweer (ws@seh.de)
//=========================================================
#ifndef __SYNTH_GUI_H__
#define __SYNTH_GUI_H__
#include "midievent.h"
const int EVENT_FIFO_SIZE = 256;
class QWidget;
//---------------------------------------------------------
//   MessGui
//    manage IO from synti-GUI to Host
//---------------------------------------------------------
class MessGui {
      int writeFd;
      // Event Fifo  synti -> GUI
      MidiEvent rFifo[EVENT_FIFO_SIZE];
      volatile int rFifoSize;
      int rFifoWindex;
      int rFifoRindex;
      // Event Fifo  GUI -> synti
      MidiEvent wFifo[EVENT_FIFO_SIZE];
      volatile int wFifoSize;
      int wFifoWindex;
      int wFifoRindex;
   protected:
      int readFd;
      void readMessage();
      void sendEvent(const MidiEvent& ev);
      void sendController(int ch, int idx, int val);
      void sendSysex(unsigned char*, int);
      virtual void processEvent(const MidiEvent&) {};
   public:
      MessGui();
      virtual ~MessGui();
      void writeEvent(const MidiEvent&);
      int fifoSize() const { return wFifoSize; }
      MidiEvent readEvent();
      };
//---------------------------------------------------------
//   SynthGuiCtrl
//---------------------------------------------------------
struct SynthGuiCtrl  {
      enum EditorType { SLIDER, SWITCH, COMBOBOX };
      QWidget* editor;
      QWidget* label;
      EditorType type;
      SynthGuiCtrl() {}
      SynthGuiCtrl(QWidget* w, QWidget* l, const EditorType t)
         : editor(w), label(l), type(t) {}
      };
#endif
 
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