canvas.hxx

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#ifndef INCLUDED_CPPCANVAS_CANVAS_HXX
#define INCLUDED_CPPCANVAS_CANVAS_HXX
 
#include <com/sun/star/uno/Reference.hxx>
#include <memory>
 
namespace basegfx
{
    class B2DHomMatrix;
    class B2DPolyPolygon;
}
 
namespace com::sun::star::rendering
{
    class  XCanvas;
    struct ViewState;
}
 
 
/* Definition of BitmapCanvas */
 
namespace cppcanvas
{
    class PolyPolygon;
    class Canvas;
 
    // forward declaration, since tools::PolyPolygon also references Canvas
    typedef std::shared_ptr< PolyPolygon > PolyPolygonSharedPtr;
 
    // forward declaration, since cloneCanvas() also references Canvas
    typedef std::shared_ptr< Canvas > CanvasSharedPtr;
 
    class Canvas
    {
    public:
        static constexpr auto ANTIALIASING_EXTRA_SIZE=2;
 
        Canvas() = default;
        Canvas(Canvas const &) = default;
        Canvas(Canvas &&) = default;
        Canvas & operator =(Canvas const &) = default;
#if !(defined __GNUC__ && !defined __clang__ && __GNUC__ == 8) // bogus -Werror=virtual-move-assign
        Canvas & operator =(Canvas &&) = default;
#endif
 
        virtual ~Canvas() {}
 
        virtual void                             setTransformation( const ::basegfx::B2DHomMatrix& rMatrix ) = 0;
        virtual ::basegfx::B2DHomMatrix          getTransformation() const = 0;
 
        virtual void                             setClip( const ::basegfx::B2DPolyPolygon& rClipPoly ) = 0;
        virtual void                             setClip() = 0;
 
        virtual ::basegfx::B2DPolyPolygon const* getClip() const = 0;
 
        virtual CanvasSharedPtr                  clone() const = 0;
        virtual void                             clear() const = 0;
 
        // this should be considered private. if RTTI gets enabled
        // someday, remove that to a separate interface
        virtual css::uno::Reference<
            css::rendering::XCanvas >           getUNOCanvas() const = 0;
        virtual css::rendering::ViewState       getViewState() const = 0;
    };
 
}
 
#endif // INCLUDED_CPPCANVAS_CANVAS_HXX
 
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