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libreoffice/slideshow/source/engine/activities/continuouskeytimeactivitybase.hxx
2010-10-28 15:50:10 +01:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_SLIDESHOW_CONTINUOUSKEYTIMEACTIVITYBASE_HXX
#define INCLUDED_SLIDESHOW_CONTINUOUSKEYTIMEACTIVITYBASE_HXX
#include "simplecontinuousactivitybase.hxx"
#include <basegfx/tools/keystoplerp.hxx>
#include <vector>
namespace slideshow
{
namespace internal
{
/** Interpolated, key-times animation.
This class implements an interpolated key-times
animation, with continuous time.
*/
class ContinuousKeyTimeActivityBase : public SimpleContinuousActivityBase
{
public:
ContinuousKeyTimeActivityBase( const ActivityParameters& rParms );
using SimpleContinuousActivityBase::perform;
/** Hook for derived classes
This method will be called from perform(), already
equipped with the modified time (nMinNumberOfFrames, repeat,
acceleration and deceleration taken into account).
@param nIndex
Current index of the key times/key values.
@param nFractionalIndex
Fractional value from the [0,1] range, specifying
the position between nIndex and nIndex+1.
@param nRepeatCount
Number of full repeats already performed
*/
virtual void perform( sal_uInt32 nIndex,
double nFractionalIndex,
sal_uInt32 nRepeatCount ) const = 0;
/// From SimpleContinuousActivityBase class
virtual void simplePerform( double nSimpleTime,
sal_uInt32 nRepeatCount ) const;
private:
const ::basegfx::tools::KeyStopLerp maLerper;
};
}
}
#endif /* INCLUDED_SLIDESHOW_CONTINUOUSKEYTIMEACTIVITYBASE_HXX */
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