include/cppcanvas/canvasgraphic.hxx

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  19
  20 #ifndef INCLUDED_CPPCANVAS_CANVASGRAPHIC_HXX
  21 #define INCLUDED_CPPCANVAS_CANVASGRAPHIC_HXX
  22
  23 #include <sal/types.h>
  24 #include <memory>
  25
  26 namespace basegfx
  27 {
  28     class B2DHomMatrix;
  29     class B2DPolyPolygon;
  30 }
  31
  32
  33 /* Definition of CanvasGraphic interface */
  34
  35 namespace cppcanvas
  36 {
  37     // forward declaration, since tools::PolyPolygon also derives from CanvasGraphic
  38     typedef std::shared_ptr< class PolyPolygon > PolyPolygonSharedPtr;
  39
  40
  41     /** This interface defines basic properties of
  42         objects that can be painted on a Canvas
  43      */
  44     class CanvasGraphic
  45     {
  46     public:
  47
  48         virtual ~CanvasGraphic() {}
  49
  50         /** Set object transformation matrix
  51          */
  52         virtual void                             setTransformation( const ::basegfx::B2DHomMatrix& rMatrix ) = 0;
  53
  54         /** Set object clipping polygon
  55          */
  56         virtual void                             setClip( const ::basegfx::B2DPolyPolygon& rClipPoly ) = 0;
  57         /** Clear object clipping polygon
  58          */
  59         virtual void                             setClip() = 0;
  60
  61         /** Set object composite mode
  62          * @see css::rendering::CompositeOperation
  63          */
  64         virtual void                             setCompositeOp( sal_Int8 aOp ) = 0;
  65
  66         /** Render to parent canvas
  67
  68             This method renders the content to the parent canvas,
  69             i.e. the canvas this object was constructed for.
  70
  71             @return whether the rendering finished successfully.
  72          */
  73         virtual bool draw() const = 0;
  74
  75     };
  76 }
  77
  78 #endif // INCLUDED_CPPCANVAS_CANVASGRAPHIC_HXX
  79
  80 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */