xref: /aoo4110/main/slideshow/source/inc/slidebitmap.hxx (revision b1cdbd2c)

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#ifndef INCLUDED_SLIDESHOW_SLIDEBITMAP_HXX
#define INCLUDED_SLIDESHOW_SLIDEBITMAP_HXX

#include <com/sun/star/uno/Reference.hxx>
#include <cppcanvas/canvas.hxx>
#include <cppcanvas/bitmap.hxx>

#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>

#include <boost/shared_ptr.hpp>
#include <boost/noncopyable.hpp>

namespace com { namespace sun { namespace star { namespace rendering
{
    class XBitmap;
} } } }


/* Definition of SlideBitmap class */

namespace slideshow
{
    namespace internal
    {

        /** Little wrapper encapsulating an XBitmap

        	This is to insulate us from changes to the preferred
        	transport format for bitmaps (using a sole XBitmap here is
        	a hack, since it is not guaranteed to work, or to work
        	without data loss, across different canvases). And since
        	we don't want to revert to a VCL Bitmap here, have to wait
        	until basegfx bitmap tooling is ready.

            TODO(F2): Add support for Canvas-independent bitmaps
            here. Then, Slide::getInitialSlideBitmap and
            Slide::getFinalSlideBitmap must also be adapted (they no
            longer need a Canvas ptr, which is actually a hack now).
         */
        class SlideBitmap : private boost::noncopyable
        {
        public:
            SlideBitmap( const ::cppcanvas::BitmapSharedPtr& rBitmap );

            bool 				draw( const ::cppcanvas::CanvasSharedPtr& rCanvas ) const;
            ::basegfx::B2ISize 	getSize() const;
            ::basegfx::B2DPoint getOutputPos() const{return maOutputPos;}
            void				move( const ::basegfx::B2DPoint& rNewPos );
            void				clip( const ::basegfx::B2DPolyPolygon& rClipPoly );

            ::com::sun::star::uno::Reference<
                ::com::sun::star::rendering::XBitmap >    getXBitmap();

        private:
            ::basegfx::B2DPoint										maOutputPos;
            ::basegfx::B2DPolyPolygon								maClipPoly;

            // TODO(Q2): Remove UNO bitmap as the transport medium
            ::com::sun::star::uno::Reference<
                ::com::sun::star::rendering::XBitmap >		mxBitmap;
        };

        typedef ::boost::shared_ptr< SlideBitmap > SlideBitmapSharedPtr;
    }
}

#endif /* INCLUDED_SLIDESHOW_SLIDEBITMAP_HXX */