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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: simplecontinuousactivitybase.hxx,v $
*
* $Revision: 1.7 $
*
* last change: $Author: obo $ $Date: 2007-07-17 14:46:14 $
*
* 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 INCLUDED_SLIDESHOW_SIMPLECONTINUOUSACTIVITYBASE_HXX
#define INCLUDED_SLIDESHOW_SIMPLECONTINUOUSACTIVITYBASE_HXX
#include "activitybase.hxx"
#include <canvas/elapsedtime.hxx>
namespace slideshow
{
namespace internal
{
/** Simple, continuous animation.
This class implements a simple, continuous animation
without considering repeats or acceleration on the
perform call. Only useful as a base class, you
probably want to use ContinuousActivityBase.
*/
class SimpleContinuousActivityBase : public ActivityBase
{
public:
SimpleContinuousActivityBase( const ActivityParameters& rParms );
virtual double calcTimeLag() const;
virtual bool perform();
protected:
/** Hook for derived classes
This method will be called from perform().
@param nSimpleTime
Simple animation time, without repeat,
acceleration or deceleration applied. This value
is always in the [0,1] range, the repeat is
accounted for with the nRepeatCount parameter.
@param nRepeatCount
Number of full repeats already performed
*/
virtual void simplePerform( double nSimpleTime, sal_uInt32 nRepeatCount ) const = 0;
virtual void startAnimation();
private:
/// Time elapsed since activity started
::canvas::tools::ElapsedTime maTimer;
/// Simple duration of activity
const double mnMinSimpleDuration;
/// Minimal number of frames to show (see ActivityParameters)
const sal_uInt32 mnMinNumberOfFrames;
/// Actual number of frames shown until now.
sal_uInt32 mnCurrPerformCalls;
};
}
}
#endif /* INCLUDED_SLIDESHOW_SIMPLECONTINUOUSACTIVITYBASE_HXX */
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