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#ifndef INCLUDED_SLIDESHOW_USERPAINTEVENTHANDLER_HXX
#define INCLUDED_SLIDESHOW_USERPAINTEVENTHANDLER_HXX

#include <boost/shared_ptr.hpp>

/* Definition of UserPaintEventHandler interface */

namespace slideshow
{
    namespace internal
    {
        class RGBColor;
        
        /** Interface for handling user paint state changes.

        	Classes implementing this interface can be added to an
        	EventMultiplexer object, and are called from there to
        	handle user paint events.
         */
        class UserPaintEventHandler
        {
        public:
            virtual ~UserPaintEventHandler() {}
            virtual bool colorChanged( RGBColor const& rUserColor ) = 0;
	    virtual bool widthChanged( double nUserStrokeWidth ) = 0;
	    virtual bool eraseAllInkChanged(bool const& rEraseAllInk) =0;
            virtual bool eraseInkWidthChanged(sal_Int32 rEraseInkSize) =0;
            virtual bool switchEraserMode() = 0;
            virtual bool switchPenMode() = 0;
            virtual bool disable() = 0;
        };

        typedef ::boost::shared_ptr< UserPaintEventHandler > UserPaintEventHandlerSharedPtr;

    }
}

#endif /* INCLUDED_SLIDESHOW_USERPAINTEVENTHANDLER_HXX */