129 lines
3.8 KiB
C++
129 lines
3.8 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: delayevent.hxx,v $
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*
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* $Revision: 1.4 $
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*
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* last change: $Author: rt $ $Date: 2005-09-07 21:08:40 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef _SLIDESHOW_DELAYEVENT_HXX
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#define _SLIDESHOW_DELAYEVENT_HXX
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#include <event.hxx>
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namespace presentation
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{
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namespace internal
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{
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/** Event, which delays the functor call the given amount of time
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@tpl Functor
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Functor to call after given timeout
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@attention
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This class might generate circular dependencies, since it
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has no means to release shared_ptrs maybe contained in the
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Functor
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*/
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template< typename Functor > class Delay : public Event
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{
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public:
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Delay( const Functor& rFunctor,
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double nTimeout ) :
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maFunctor( rFunctor ),
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mnTimeout( nTimeout ),
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mbWasFired( false )
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{
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}
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virtual bool fire()
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{
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if( isCharged() )
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{
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mbWasFired = true;
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maFunctor();
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}
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return true;
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}
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virtual bool isCharged() const
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{
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return !mbWasFired;
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}
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virtual double getActivationTime( double nCurrentTime ) const
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{
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return nCurrentTime + mnTimeout;
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}
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virtual void dispose()
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{
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}
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private:
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Functor maFunctor;
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double mnTimeout;
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bool mbWasFired;
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};
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/** Generate delay event
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@param rFunctor
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Functor to call when the event fires.
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@param nTimeout
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Timeout in seconds, to wait until functor is called.
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@return generated delay event
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*/
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template< typename Functor > EventSharedPtr makeDelay( const Functor& rFunctor,
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double nTimeout )
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{
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return EventSharedPtr( new Delay< Functor >(rFunctor, nTimeout) );
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}
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/** Generate immediate event
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@param rFunctor
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Functor to call when the event fires.
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@return generated immediate event.
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*/
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template< typename Functor > EventSharedPtr makeEvent( const Functor& rFunctor )
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{
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return EventSharedPtr( new Delay< Functor >(rFunctor, 0.0) );
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}
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}
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}
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#endif /* _SLIDESHOW_DELAYEVENT_HXX */
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