93 lines
3 KiB
C++
93 lines
3 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org 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
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX
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#define INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX
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#include <canvas/elapsedtime.hxx>
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#include "event.hxx"
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#include "activitiesqueue.hxx"
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#include <boost/bind.hpp>
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#include <boost/noncopyable.hpp>
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namespace slideshow {
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namespace internal {
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/** Little helper class, used to set Activities active again
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after some sleep period.
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Clients can use this class to schedule wakeup events at
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the EventQueue, to avoid busy-waiting for the next
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discrete time instant.
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*/
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class WakeupEvent : public Event,
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private ::boost::noncopyable
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{
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public:
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WakeupEvent(
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::boost::shared_ptr< ::canvas::tools::ElapsedTime > const& pTimeBase,
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ActivitiesQueue & rActivityQueue );
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virtual void dispose();
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virtual bool fire();
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virtual bool isCharged() const;
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virtual double getActivationTime( double nCurrentTime ) const;
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/// Start the internal timer
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void start();
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/** Set the next timeout this object should generate.
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@param nextTime
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Absolute time, measured from the last start() call,
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when this event should wakeup the Activity again. If
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your time is relative, simply call start() just before
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every setNextTimeout() call.
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*/
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void setNextTimeout( double nextTime );
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/** Set activity to wakeup.
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The activity given here will be reinserted into the
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ActivitiesQueue, once the timeout is reached.
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*/
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void setActivity( const ActivitySharedPtr& rActivity );
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private:
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::canvas::tools::ElapsedTime maTimer;
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double mnNextTime;
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ActivitySharedPtr mpActivity;
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ActivitiesQueue& mrActivityQueue;
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};
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typedef ::boost::shared_ptr< WakeupEvent > WakeupEventSharedPtr;
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} // namespace internal
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} // namespace presentation
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#endif /* INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX */
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