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      28                 :            : 
      29                 :            : #ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_TRANSFORMPRIMITIVE2D_HXX
      30                 :            : #define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_TRANSFORMPRIMITIVE2D_HXX
      31                 :            : 
      32                 :            : #include <drawinglayer/drawinglayerdllapi.h>
      33                 :            : 
      34                 :            : #include <drawinglayer/primitive2d/groupprimitive2d.hxx>
      35                 :            : #include <basegfx/matrix/b2dhommatrix.hxx>
      36                 :            : 
      37                 :            : //////////////////////////////////////////////////////////////////////////////
      38                 :            : 
      39                 :            : namespace drawinglayer
      40                 :            : {
      41                 :            :     namespace primitive2d
      42                 :            :     {
      43                 :            :         /** TransformPrimitive2D class
      44                 :            : 
      45                 :            :             This is one of the basic grouping primitives and it provides
      46                 :            :             embedding a sequence of primitives (a geometry) into a
      47                 :            :             transformation. All renderers have to handle this, usually by
      48                 :            :             building a current transformation stack (linear combination)
      49                 :            :             and applying this to all to-be-rendered geometry. If not handling
      50                 :            :             this, the output will be mostly wrong since this primitive is
      51                 :            :             widely used.
      52                 :            : 
      53                 :            :             It does transform by embedding an existing geometry into a
      54                 :            :             transformation as Child-content. This allows re-usage of the
      55                 :            :             refcounted Uno-Api primitives and their existung, buffered
      56                 :            :             decompositions.
      57                 :            : 
      58                 :            :             It could e.g. be used to show a single object geometry in 1000
      59                 :            :             different, transformed states without the need to create those
      60                 :            :             thousand primitive contents.
      61                 :            :          */
      62 [ +  - ][ -  + ]:       7912 :         class DRAWINGLAYER_DLLPUBLIC TransformPrimitive2D : public GroupPrimitive2D
      63                 :            :         {
      64                 :            :         private:
      65                 :            :             // the transformation to apply to the child geometry
      66                 :            :             basegfx::B2DHomMatrix                   maTransformation;
      67                 :            : 
      68                 :            :         public:
      69                 :            :             /// constructor
      70                 :            :             TransformPrimitive2D(
      71                 :            :                 const basegfx::B2DHomMatrix& rTransformation,
      72                 :            :                 const Primitive2DSequence& rChildren);
      73                 :            : 
      74                 :            :             /// data read access
      75                 :      24893 :             const basegfx::B2DHomMatrix& getTransformation() const { return maTransformation; }
      76                 :            : 
      77                 :            :             /// compare operator
      78                 :            :             virtual bool operator==(const BasePrimitive2D& rPrimitive) const;
      79                 :            : 
      80                 :            :             /// get range
      81                 :            :             virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const;
      82                 :            : 
      83                 :            :             /// provide unique ID
      84                 :            :             DeclPrimitrive2DIDBlock()
      85                 :            :         };
      86                 :            :     } // end of namespace primitive2d
      87                 :            : } // end of namespace drawinglayer
      88                 :            : 
      89                 :            : //////////////////////////////////////////////////////////////////////////////
      90                 :            : 
      91                 :            : #endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_TRANSFORMPRIMITIVE2D_HXX
      92                 :            : 
      93                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */