Event.h

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#ifndef FCAM_EVENT_H
#define FCAM_EVENT_H


#include "Time.h"
#include <pthread.h>
#include <queue>
#include <string>

namespace FCam {

    class EventGenerator;
    
    class Event {
      public:
        EventGenerator *creator; 
    int type;                
    union {                  
        int iData;           

        float fData;         
    };                       
    Time time;               
    
    std::string description() const; 
    
    enum {Error = 0,               
          Warning,                 
          FocusPressed,            
          FocusReleased,           
          ShutterPressed,          
          ShutterReleased,         
          N900LensClosed = 10000,  
          N900LensOpened,          
          N900SlideOpened,         
          N900SlideClosed,         
          F2LensRemoved = 20000,   
          F2LensInstalled,         
          F2ZoomChanged,           
          F2FocusChanged           
    };
    };
    
    class EventGenerator {
      public:
    virtual std::string getEventString(const Event &) const;

      protected:
    
    void postEvent(Event);
    
      private:
    // The actual global event queue and a mutex for synchronizing
    // access to it
    static std::queue<Event> _eventQueue;
    static pthread_mutex_t _eventQueueMutex;
    
    // this function is allowed to access the event queue
    friend bool getNextEvent(Event *);
    };
    
    
    bool getNextEvent(Event *);
    
}

#endif

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