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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_SLIDESHOW_ACTIVITIESQUEUE_HXX
#define INCLUDED_SLIDESHOW_ACTIVITIESQUEUE_HXX
#include <deque>
#include "activity.hxx"
#include "unoviewcontainer.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.
*/
ActivitiesQueue(
const ::boost::shared_ptr< ::canvas::tools::ElapsedTime >& pPresTimer );
~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();
/** Call all dequeued activities' dequeued() method
*/
void processDequeued();
/** 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; }
/** returns number of all activities, waiting, reinserted and dequeued
*/
std::size_t size() const
{
return maCurrentActivitiesWaiting.size() + maCurrentActivitiesReinsert.size() + maDequeuedActivities.size();
}
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
ActivityQueue maDequeuedActivities; // This list collects all activities which did not request
// a reinsertion. After the screen update has been
// performed, those are notified via dequeued(). This
// facilitates cleanup actions taking place _after_ the
// current frame has been displayed.
};
}
}
#endif /* INCLUDED_SLIDESHOW_ACTIVITIESQUEUE_HXX */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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