libreoffice/slideshow/source/engine/transitions/combtransition.hxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_TRANSITIONS_COMBTRANSITION_HXX
#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_TRANSITIONS_COMBTRANSITION_HXX

#include <basegfx/polygon/b2dpolypolygon.hxx>
#include "slidechangebase.hxx"

namespace slideshow {
namespace internal {

/** Comb transition class.

    This class provides a SlideChangeAnimation, showing a
    comb-like effect (stripes of alternating push effects).
*/
class CombTransition : public SlideChangeBase
{
public:
    /** Create the comb transition effect.

        @param nNumStripes
        Number of comb-like stripes to show in this effect
    */
    CombTransition( ::boost::optional<SlideSharedPtr> const & leavingSlide,
                    const SlideSharedPtr&                     pEnteringSlide,
                    const SoundPlayerSharedPtr&               pSoundPlayer,
                    const UnoViewContainer&                   rViewContainer,
                    ScreenUpdater&                            rScreenUpdater,
                    EventMultiplexer&                         rEventMultiplexer,
                    const ::basegfx::B2DVector&               rPushDirection,
                    sal_Int32                                 nNumStripes );

    // NumberAnimation
    virtual bool operator()( double x ) override;

private:
    const ::basegfx::B2DVector maPushDirectionUnit;
    sal_Int32 const            mnNumStripes;

    void renderComb( double t, const ViewEntry& rViewEntry ) const;
};

} // namespace internal
} // namespace presentation

#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_TRANSITIONS_COMBTRANSITION_HXX

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