1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir #ifndef INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX 28*cdf0e10cSrcweir #define INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX 29*cdf0e10cSrcweir 30*cdf0e10cSrcweir #include <canvas/elapsedtime.hxx> 31*cdf0e10cSrcweir 32*cdf0e10cSrcweir #include "event.hxx" 33*cdf0e10cSrcweir #include "activitiesqueue.hxx" 34*cdf0e10cSrcweir 35*cdf0e10cSrcweir #include <boost/bind.hpp> 36*cdf0e10cSrcweir #include <boost/noncopyable.hpp> 37*cdf0e10cSrcweir 38*cdf0e10cSrcweir namespace slideshow { 39*cdf0e10cSrcweir namespace internal { 40*cdf0e10cSrcweir 41*cdf0e10cSrcweir /** Little helper class, used to set Activities active again 42*cdf0e10cSrcweir after some sleep period. 43*cdf0e10cSrcweir 44*cdf0e10cSrcweir Clients can use this class to schedule wakeup events at 45*cdf0e10cSrcweir the EventQueue, to avoid busy-waiting for the next 46*cdf0e10cSrcweir discrete time instant. 47*cdf0e10cSrcweir */ 48*cdf0e10cSrcweir class WakeupEvent : public Event, 49*cdf0e10cSrcweir private ::boost::noncopyable 50*cdf0e10cSrcweir { 51*cdf0e10cSrcweir public: 52*cdf0e10cSrcweir WakeupEvent( 53*cdf0e10cSrcweir ::boost::shared_ptr< ::canvas::tools::ElapsedTime > const& pTimeBase, 54*cdf0e10cSrcweir ActivitiesQueue & rActivityQueue ); 55*cdf0e10cSrcweir 56*cdf0e10cSrcweir virtual void dispose(); 57*cdf0e10cSrcweir virtual bool fire(); 58*cdf0e10cSrcweir virtual bool isCharged() const; 59*cdf0e10cSrcweir virtual double getActivationTime( double nCurrentTime ) const; 60*cdf0e10cSrcweir 61*cdf0e10cSrcweir /// Start the internal timer 62*cdf0e10cSrcweir void start(); 63*cdf0e10cSrcweir 64*cdf0e10cSrcweir /** Set the next timeout this object should generate. 65*cdf0e10cSrcweir 66*cdf0e10cSrcweir @param nextTime 67*cdf0e10cSrcweir Absolute time, measured from the last start() call, 68*cdf0e10cSrcweir when this event should wakeup the Activity again. If 69*cdf0e10cSrcweir your time is relative, simply call start() just before 70*cdf0e10cSrcweir every setNextTimeout() call. 71*cdf0e10cSrcweir */ 72*cdf0e10cSrcweir void setNextTimeout( double nextTime ); 73*cdf0e10cSrcweir 74*cdf0e10cSrcweir /** Set activity to wakeup. 75*cdf0e10cSrcweir 76*cdf0e10cSrcweir The activity given here will be reinserted into the 77*cdf0e10cSrcweir ActivitiesQueue, once the timeout is reached. 78*cdf0e10cSrcweir */ 79*cdf0e10cSrcweir void setActivity( const ActivitySharedPtr& rActivity ); 80*cdf0e10cSrcweir 81*cdf0e10cSrcweir private: 82*cdf0e10cSrcweir ::canvas::tools::ElapsedTime maTimer; 83*cdf0e10cSrcweir double mnNextTime; 84*cdf0e10cSrcweir ActivitySharedPtr mpActivity; 85*cdf0e10cSrcweir ActivitiesQueue& mrActivityQueue; 86*cdf0e10cSrcweir }; 87*cdf0e10cSrcweir 88*cdf0e10cSrcweir typedef ::boost::shared_ptr< WakeupEvent > WakeupEventSharedPtr; 89*cdf0e10cSrcweir 90*cdf0e10cSrcweir } // namespace internal 91*cdf0e10cSrcweir } // namespace presentation 92*cdf0e10cSrcweir 93*cdf0e10cSrcweir #endif /* INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX */ 94