drawinglayer/source/primitive2d/discretebitmapprimitive2d.cxx

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  19
  20 #include <drawinglayer/primitive2d/discretebitmapprimitive2d.hxx>
  21 #include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
  22 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  23
  24
  25 namespace drawinglayer
  26 {
  27     namespace primitive2d
  28     {
  29         void DiscreteBitmapPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const
  30         {
  31             // use getViewTransformation() and getObjectTransformation() from
  32             // ObjectAndViewTransformationDependentPrimitive2D to create a BitmapPrimitive2D
  33             // with the correct mapping
  34
  35             if(!getBitmapEx().IsEmpty())
  36             {
  37                 // get discrete size
  38                 const Size& rSizePixel = getBitmapEx().GetSizePixel();
  39                 const basegfx::B2DVector aDiscreteSize(rSizePixel.Width(), rSizePixel.Height());
  40
  41                 // get inverse ViewTransformation
  42                 basegfx::B2DHomMatrix aInverseViewTransformation(getViewTransformation());
  43                 aInverseViewTransformation.invert();
  44
  45                 // get size and position in world coordinates
  46                 const basegfx::B2DVector aWorldSize(aInverseViewTransformation * aDiscreteSize);
  47                 const basegfx::B2DPoint  aWorldTopLeft(getObjectTransformation() * getTopLeft());
  48
  49                 // build object matrix in world coordinates so that the top-left
  50                 // position remains, but possible transformations (e.g. rotations)
  51                 // in the ObjectToView stack remain and get correctly applied
  52                 basegfx::B2DHomMatrix aObjectTransform;
  53
  54                 aObjectTransform.set(0, 0, aWorldSize.getX());
  55                 aObjectTransform.set(1, 1, aWorldSize.getY());
  56                 aObjectTransform.set(0, 2, aWorldTopLeft.getX());
  57                 aObjectTransform.set(1, 2, aWorldTopLeft.getY());
  58
  59                 // get inverse ObjectTransformation
  60                 basegfx::B2DHomMatrix aInverseObjectTransformation(getObjectTransformation());
  61                 aInverseObjectTransformation.invert();
  62
  63                 // transform to object coordinate system
  64                 aObjectTransform = aInverseObjectTransformation * aObjectTransform;
  65
  66                 // create BitmapPrimitive2D with now object-local coordinate data
  67                 rContainer.push_back(new BitmapPrimitive2D(getBitmapEx(), aObjectTransform));
  68             }
  69         }
  70
  71         DiscreteBitmapPrimitive2D::DiscreteBitmapPrimitive2D(
  72             const BitmapEx& rBitmapEx,
  73             const basegfx::B2DPoint& rTopLeft)
  74         :   ObjectAndViewTransformationDependentPrimitive2D(),
  75             maBitmapEx(rBitmapEx),
  76             maTopLeft(rTopLeft)
  77         {
  78         }
  79
  80         bool DiscreteBitmapPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
  81         {
  82             if(ObjectAndViewTransformationDependentPrimitive2D::operator==(rPrimitive))
  83             {
  84                 const DiscreteBitmapPrimitive2D& rCompare = static_cast<const DiscreteBitmapPrimitive2D&>(rPrimitive);
  85
  86                 return (getBitmapEx() == rCompare.getBitmapEx()
  87                     && getTopLeft() == rCompare.getTopLeft());
  88             }
  89
  90             return false;
  91         }
  92
  93         // provide unique ID
  94         ImplPrimitive2DIDBlock(DiscreteBitmapPrimitive2D, PRIMITIVE2D_ID_DISCRETEBITMAPPRIMITIVE2D)
  95
  96     } // end of namespace primitive2d
  97 } // end of namespace drawinglayer
  98
  99 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */