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27 
28 #ifndef INCLUDED_SLIDESHOW_CONTINUOUSKEYTIMEACTIVITYBASE_HXX
29 #define INCLUDED_SLIDESHOW_CONTINUOUSKEYTIMEACTIVITYBASE_HXX
30 
31 #include "simplecontinuousactivitybase.hxx"
32 
33 #include <basegfx/tools/keystoplerp.hxx>
34 #include <vector>
35 
36 
37 namespace slideshow
38 {
39     namespace internal
40     {
41         /** Interpolated, key-times animation.
42 
43         	This class implements an interpolated key-times
44             animation, with continuous time.
45         */
46         class ContinuousKeyTimeActivityBase : public SimpleContinuousActivityBase
47         {
48         public:
49             ContinuousKeyTimeActivityBase( const ActivityParameters& rParms );
50 
51             using SimpleContinuousActivityBase::perform;
52 
53             /** Hook for derived classes
54 
55 	            This method will be called from perform(), already
56                 equipped with the modified time (nMinNumberOfFrames, repeat,
57                 acceleration and deceleration taken into account).
58 
59                 @param nIndex
60                 Current index of the key times/key values.
61 
62                 @param nFractionalIndex
63                 Fractional value from the [0,1] range, specifying
64                 the position between nIndex and nIndex+1.
65 
66                 @param nRepeatCount
67                 Number of full repeats already performed
68             */
69             virtual void perform( sal_uInt32	nIndex,
70                                   double 	   	nFractionalIndex,
71                                   sal_uInt32 	nRepeatCount ) const = 0;
72 
73             /// From SimpleContinuousActivityBase class
74             virtual void simplePerform( double 		nSimpleTime,
75                                         sal_uInt32 	nRepeatCount ) const;
76 
77         private:
78             const ::basegfx::tools::KeyStopLerp maLerper;
79         };
80     }
81 }
82 
83 #endif /* INCLUDED_SLIDESHOW_CONTINUOUSKEYTIMEACTIVITYBASE_HXX */
84