finalcut/src/fobject.h

// File: fobject.h
// Provides: class FObject
//
//  Base class
//  ══════════
//
// ▕▔▔▔▔▔▔▔▔▔▏
// ▕ FObject ▏
// ▕▁▁▁▁▁▁▁▁▁▏

#ifndef _FOBJECT_H
#define _FOBJECT_H

#include <sys/time.h> // need for gettimeofday
#include <cstdlib>
#include <list>
#include <vector>

#include "fevent.h"


#define null NULL

typedef unsigned char  uChar;
typedef unsigned int   uInt;
typedef unsigned long  uLong;
typedef unsigned char  uInt8;
typedef unsigned short uInt16;
typedef unsigned int   uInt32;
typedef u_int64_t      uInt64;

typedef signed int   sInt;
typedef signed long  sLong;
typedef signed char  sInt8;
typedef signed short sInt16;
typedef signed int   sInt32;
typedef int64_t      sInt64;

typedef long double  lDouble;

//----------------------------------------------------------------------
// class FObject
//----------------------------------------------------------------------

#pragma pack(push)
#pragma pack(1)

class FObject
{
 public:
   typedef std::list<FObject*> object_list;

   struct timer_data
   {
     int       id;
     timeval   interval;
     timeval   timeout;
     FObject*  object;
   };
   typedef std::vector<timer_data> TimerList;
   static TimerList* timer_list;

 private:
   FObject*     parentObj;
   object_list  children_list;
   bool         has_parent;
   static bool  modify_timer;
   friend class FApplication;

 public:
   explicit FObject (FObject* = 0);
   virtual ~FObject();
   virtual const char* getClassName() const;

   FObject*     getParent() const;
   bool         hasParent() const;
   void         removeParent();
   object_list  getChildren() const;
   bool         hasChildren() const;
   void         addChild (FObject*);
   void         delChild (FObject*);
   int          numOfChildren() const;
   static void  getCurrentTime (timeval&);
   int          addTimer (int interval);
   bool         delTimer (int id);
   bool         delAllTimer();
   virtual bool event (FEvent*);

 protected:
   virtual void onTimer (FTimerEvent*);

 private:
   FObject (const FObject&);
   FObject& operator = (const FObject&);
};

#pragma pack(pop)

//----------------------------------------------------------------------
inline const char* FObject::getClassName() const
{ return "FObject"; }

//----------------------------------------------------------------------
inline FObject* FObject::getParent() const
{ return parentObj; }

//----------------------------------------------------------------------
inline bool FObject::hasParent() const
{ return has_parent; }

//----------------------------------------------------------------------
inline void FObject::removeParent()
{ parentObj = 0; }

//----------------------------------------------------------------------
inline FObject::object_list FObject::getChildren() const
{ return children_list; }

//----------------------------------------------------------------------
inline bool FObject::hasChildren() const
{ return bool( ! children_list.empty() ); }

//----------------------------------------------------------------------
inline int FObject::numOfChildren() const
{ return int(children_list.size()); }


//----------------------------------------------------------------------
// Operator functions for timeval
//----------------------------------------------------------------------

static inline timeval operator + (const timeval& t1, const timeval& t2)
{
  timeval tmp;
  tmp.tv_sec = t1.tv_sec + t2.tv_sec;
  if ( (tmp.tv_usec = t1.tv_usec + t2.tv_usec) >= 1000000 )
  {
    tmp.tv_sec++;
    tmp.tv_usec -= 1000000;
  }
  return tmp;
}

//----------------------------------------------------------------------
static inline timeval operator - (const timeval& t1, const timeval& t2)
{
  timeval tmp;
  tmp.tv_sec = t1.tv_sec - t2.tv_sec;
  if ( (tmp.tv_usec = t1.tv_usec - t2.tv_usec) < 0 )
  {
    tmp.tv_sec--;
    tmp.tv_usec += 1000000;
  }
  return tmp;
}

//----------------------------------------------------------------------
static inline timeval& operator += (timeval& t1, const timeval& t2)
{
  t1.tv_sec += t2.tv_sec;
  if ( (t1.tv_usec += t2.tv_usec) >= 1000000 )
  {
    t1.tv_sec++;
    t1.tv_usec -= 1000000;
  }
  return t1;
}

//----------------------------------------------------------------------
static inline bool operator < (const timeval& t1, const timeval& t2)
{
  return (t1.tv_sec < t2.tv_sec)
      || (t1.tv_sec == t2.tv_sec && t1.tv_usec < t2.tv_usec);
}

#endif  // _FOBJECT_H