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
  26 namespace drawinglayer
  27 {
  28     namespace primitive2d
  29     {
  30         Primitive2DSequence DiscreteBitmapPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
  31         {
  32             // use getViewTransformation() and getObjectTransformation() from
  33             // ObjectAndViewTransformationDependentPrimitive2D to create a BitmapPrimitive2D
  34             // with the correct mapping
  35             Primitive2DSequence xRetval;
  36
  37             if(!getBitmapEx().IsEmpty())
  38             {
  39                 // get discrete size
  40                 const Size& rSizePixel = getBitmapEx().GetSizePixel();
  41                 const basegfx::B2DVector aDiscreteSize(rSizePixel.Width(), rSizePixel.Height());
  42
  43                 // get inverse ViewTransformation
  44                 basegfx::B2DHomMatrix aInverseViewTransformation(getViewTransformation());
  45                 aInverseViewTransformation.invert();
  46
  47                 // get size and position in world coordinates
  48                 const basegfx::B2DVector aWorldSize(aInverseViewTransformation * aDiscreteSize);
  49                 const basegfx::B2DPoint  aWorldTopLeft(getObjectTransformation() * getTopLeft());
  50
  51                 // build object matrix in world coordinates so that the top-left
  52                 // position remains, but eventual transformations (e.g. rotations)
  53                 // in the ObjectToView stack remain and get correctly applied
  54                 basegfx::B2DHomMatrix aObjectTransform;
  55
  56                 aObjectTransform.set(0, 0, aWorldSize.getX());
  57                 aObjectTransform.set(1, 1, aWorldSize.getY());
  58                 aObjectTransform.set(0, 2, aWorldTopLeft.getX());
  59                 aObjectTransform.set(1, 2, aWorldTopLeft.getY());
  60
  61                 // get inverse ObjectTransformation
  62                 basegfx::B2DHomMatrix aInverseObjectTransformation(getObjectTransformation());
  63                 aInverseObjectTransformation.invert();
  64
  65                 // transform to object coordinate system
  66                 aObjectTransform = aInverseObjectTransformation * aObjectTransform;
  67
  68                 // create BitmapPrimitive2D with now object-local coordinate data
  69                 const Primitive2DReference xRef(new BitmapPrimitive2D(getBitmapEx(), aObjectTransform));
  70                 xRetval = Primitive2DSequence(&xRef, 1);
  71             }
  72
  73             return xRetval;
  74         }
  75
  76         DiscreteBitmapPrimitive2D::DiscreteBitmapPrimitive2D(
  77             const BitmapEx& rBitmapEx,
  78             const basegfx::B2DPoint& rTopLeft)
  79         :   ObjectAndViewTransformationDependentPrimitive2D(),
  80             maBitmapEx(rBitmapEx),
  81             maTopLeft(rTopLeft)
  82         {
  83         }
  84
  85         bool DiscreteBitmapPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
  86         {
  87             if(ObjectAndViewTransformationDependentPrimitive2D::operator==(rPrimitive))
  88             {
  89                 const DiscreteBitmapPrimitive2D& rCompare = (DiscreteBitmapPrimitive2D&)rPrimitive;
  90
  91                 return (getBitmapEx() == rCompare.getBitmapEx()
  92                     && getTopLeft() == rCompare.getTopLeft());
  93             }
  94
  95             return false;
  96         }
  97
  98         // provide unique ID
  99         ImplPrimitive2DIDBlock(DiscreteBitmapPrimitive2D, PRIMITIVE2D_ID_DISCRETEBITMAPPRIMITIVE2D)
 100
 101     } // end of namespace primitive2d
 102 } // end of namespace drawinglayer
 103
 104 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */