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21 
22 
23 
24 #ifndef INCLUDED_SLIDESHOW_COMBTRANSITION_HXX
25 #define INCLUDED_SLIDESHOW_COMBTRANSITION_HXX
26 
27 #include <basegfx/polygon/b2dpolypolygon.hxx>
28 #include "slidechangebase.hxx"
29 
30 namespace slideshow {
31 namespace internal {
32 
33 /** Comb transition class.
34 
35     This class provides a SlideChangeAnimation, showing a
36     comb-like effect (stripes of alternating push effects).
37 */
38 class CombTransition : public SlideChangeBase
39 {
40 public:
41     /** Create the comb transition effect.
42 
43         @param nNumStripes
44         Number of comb-like stripes to show in this effect
45     */
46     CombTransition( ::boost::optional<SlideSharedPtr> const & leavingSlide,
47                     const SlideSharedPtr&                     pEnteringSlide,
48                     const SoundPlayerSharedPtr&               pSoundPlayer,
49                     const UnoViewContainer&                   rViewContainer,
50                     ScreenUpdater&                            rScreenUpdater,
51                     EventMultiplexer&                         rEventMultiplexer,
52                     const ::basegfx::B2DVector&               rPushDirection,
53                     sal_Int32                                 nNumStripes );
54 
55     // NumberAnimation
56     virtual bool operator()( double x );
57 
58 private:
59     const ::basegfx::B2DVector maPushDirectionUnit;
60     sal_Int32                  mnNumStripes;
61 
62     void renderComb( double t, const ViewEntry& rViewEntry ) const;
63 };
64 
65 } // namespace internal
66 } // namespace presentation
67 
68 #endif /* INCLUDED_SLIDESHOW_COMBTRANSITION_HXX */
69