timer.hh

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// Timer.hh for Blackbox - An X11 Window Manager
// Copyright (c) 1997 - 1999 Brad Hughes ([e-mail])
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#ifndef   __Timer_hh
#define   __Timer_hh

#if HAVE_CONFIG_H
#   include "config.h"
#endif /* HAVE_CONFIG_H */

#ifdef    TIME_WITH_SYS_TIME
#  include <sys/time.h>
#  include <time.h>
#else // !TIME_WITH_SYS_TIME
#  ifdef    HAVE_SYS_TIME_H
#    include <sys/time.h>
#  else // !HAVE_SYS_TIME_H
#    include <time.h>
#  endif // HAVE_SYS_TIME_H
#endif // TIME_WITH_SYS_TIME

// forward declaration
class BTimer;
class TimeoutHandler;

#include "BaseDisplay.hh"


class TimeoutHandler
{
public:
	virtual void timeout(void) = 0;
};


class BTimer
{
	friend class BaseDisplay;
private:
	BaseDisplay *display;
	TimeoutHandler *handler;
	int timing, once;

	timeval _start, _timeout;


protected:
	void fireTimeout(void);


public:
	BTimer(BaseDisplay *, TimeoutHandler *);
	virtual ~BTimer(void);

	inline const int &isTiming(void) const
	{
		return timing;
	}
	inline const int &doOnce(void) const
	{
		return once;
	}

	inline const timeval &getTimeout(void) const
	{
		return _timeout;
	}
	inline const timeval &getStartTime(void) const
	{
		return _start;
	}

	inline void fireOnce(int o)
	{
		once = o;
	}

	void setTimeout(long);
	void setTimeout(timeval);
	void start(void);
	void stop(void);
	void reset(void);
};


#endif // __Timer_hh