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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: activitiesqueue.hxx,v $
*
* $Revision: 1.7 $
*
* last change: $Author: kz $ $Date: 2006-12-13 15:50:23 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef _SLIDESHOW_ACTIVITIESQUEUE_HXX
#define _SLIDESHOW_ACTIVITIESQUEUE_HXX
#include <deque>
#include "activity.hxx"
#include "unoviewcontainer.hxx"
#include "eventmultiplexer.hxx"
#include <canvas/elapsedtime.hxx>
#include <boost/shared_ptr.hpp>
#include <boost/utility.hpp> // for boost::noncopyable
/* Definition of ActivitiesQueue class */
namespace slideshow
{
namespace internal
{
/** This class handles the XSprite updates needed for
animations, such as moves, scales etc. You can add
activity objects to this class, which are called in a
round-robin fashion.
*/
class ActivitiesQueue : private ::boost::noncopyable
{
public:
/** Create an ActivitiesQueue.
@param pPresTimer
Pointer to global presentation timer. Used for
adjusting and holding global presentation time.
@param rEventMultiplexer
Handles screen updates for us, when a full round of
activities has been performed.
*/
ActivitiesQueue(
const ::boost::shared_ptr< ::canvas::tools::ElapsedTime >& pPresTimer,
EventMultiplexer& rEventMultiplexer );
~ActivitiesQueue();
/** Add the given activity to the queue.
*/
bool addActivity( const ActivitySharedPtr& pActivity );
/** Process the activities queue.
This method performs the smallest atomic processing
possible on the queue (typically, this means one
activity get processed).
*/
void process();
/** Query state of the queue
@return false, if queue is empty, true otherwise
*/
bool isEmpty() const;
/** Remove all pending activities from the queue.
*/
void clear();
/** Gets the queue's timer object.
*/
::boost::shared_ptr< ::canvas::tools::ElapsedTime > const &
getTimer() const { return mpTimer; }
private:
::boost::shared_ptr< ::canvas::tools::ElapsedTime > mpTimer;
typedef ::std::deque< ActivitySharedPtr > ActivityQueue;
ActivityQueue maCurrentActivitiesWaiting; // currently running
// activities, that still
// await processing for this
// round
ActivityQueue maCurrentActivitiesReinsert; // currently running
// activities, that are
// already processed for
// this round, and wants
// to be reinserted next
// round
EventMultiplexer& mrEventMultiplexer;
bool mbCurrentRoundNeedsScreenUpdate;
};
}
}
#endif /* _SLIDESHOW_ACTIVITIESQUEUE_HXX */
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