Quelle  userpaintoverlay.hxx   Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX
#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX

#include <cppcanvas/canvasgraphic.hxx>

#include <rgbcolor.hxx>

#include <memory>
#include <vector>

/* Definition of UserPaintOverlay class */

namespace slideshow::internal
    {
        class EventMultiplexer;
        struct SlideShowContext;

        class PaintOverlayHandler;
        typedef ::std::shared_ptr< class UserPaintOverlay > UserPaintOverlaySharedPtr;
        typedef ::std::vector< ::cppcanvas::PolyPolygonSharedPtr> PolyPolygonVector;
        /** Slide overlay, which can be painted into by the user.

            This class registers itself at the EventMultiplexer,
            listening for mouse clicks and moves. When the mouse is
            dragged, a hand sketching in the selected color is shown.
        */
        class UserPaintOverlay
        {
        public:
            /** Create a UserPaintOverlay

                @param rStrokeColor
                Color to use for drawing

                @param nStrokeWidth
                Width of the stroked path
             */
            static UserPaintOverlaySharedPtr create( const RGBColor&          rStrokeColor,
                                                     double                   nStrokeWidth,
                                                     const SlideShowContext&  rContext,
                                                     PolyPolygonVector&&      rPolygons,
                                                     bool                     bActive);
            ~UserPaintOverlay();
            UserPaintOverlay(const UserPaintOverlay&) = delete;
            UserPaintOverlay& operator=(const UserPaintOverlay&) = delete;
            PolyPolygonVector const & getPolygons() const;
            void drawPolygons();

        private:
            UserPaintOverlay( const RGBColor&          rStrokeColor,
                              double                   nStrokeWidth,
                              const SlideShowContext&  rContext,
                              PolyPolygonVector&&     rPolygons,
                              bool                    bActive );

            ::std::shared_ptr<PaintOverlayHandler>    mpHandler;
            EventMultiplexer&                           mrMultiplexer;
        };

}

#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX

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