discretebitmapprimitive2d.cxx

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#include <drawinglayer/primitive2d/discretebitmapprimitive2d.hxx>
#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <toolkit/helper/vclunohelper.hxx>
 
 
namespace drawinglayer::primitive2d
{
        void DiscreteBitmapPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            // use getViewTransformation() and getObjectTransformation() from
            // ObjectAndViewTransformationDependentPrimitive2D to create a BitmapPrimitive2D
            // with the correct mapping
 
            if(getBitmapEx().IsEmpty())
                return;
 
            // get discrete size
            const Size& rSizePixel = getBitmapEx().GetSizePixel();
            const basegfx::B2DVector aDiscreteSize(rSizePixel.Width(), rSizePixel.Height());
 
            // get inverse ViewTransformation
            basegfx::B2DHomMatrix aInverseViewTransformation(getViewTransformation());
            aInverseViewTransformation.invert();
 
            // get size and position in world coordinates
            const basegfx::B2DVector aWorldSize(aInverseViewTransformation * aDiscreteSize);
            const basegfx::B2DPoint  aWorldTopLeft(getObjectTransformation() * getTopLeft());
 
            // build object matrix in world coordinates so that the top-left
            // position remains, but possible transformations (e.g. rotations)
            // in the ObjectToView stack remain and get correctly applied
            basegfx::B2DHomMatrix aObjectTransform;
 
            aObjectTransform.set(0, 0, aWorldSize.getX());
            aObjectTransform.set(1, 1, aWorldSize.getY());
            aObjectTransform.set(0, 2, aWorldTopLeft.getX());
            aObjectTransform.set(1, 2, aWorldTopLeft.getY());
 
            // get inverse ObjectTransformation
            basegfx::B2DHomMatrix aInverseObjectTransformation(getObjectTransformation());
            aInverseObjectTransformation.invert();
 
            // transform to object coordinate system
            aObjectTransform = aInverseObjectTransformation * aObjectTransform;
 
            // create BitmapPrimitive2D with now object-local coordinate data
            rContainer.push_back(
                new BitmapPrimitive2D(
                    getBitmapEx(),
                    aObjectTransform));
        }
 
        DiscreteBitmapPrimitive2D::DiscreteBitmapPrimitive2D(
            const BitmapEx& rBitmapEx,
            const basegfx::B2DPoint& rTopLeft)
        :   maBitmapEx(rBitmapEx),
            maTopLeft(rTopLeft)
        {
        }
 
        bool DiscreteBitmapPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
        {
            if(ObjectAndViewTransformationDependentPrimitive2D::operator==(rPrimitive))
            {
                const DiscreteBitmapPrimitive2D& rCompare = static_cast<const DiscreteBitmapPrimitive2D&>(rPrimitive);
 
                return (getBitmapEx() == rCompare.getBitmapEx()
                    && getTopLeft() == rCompare.getTopLeft());
            }
 
            return false;
        }
 
        // provide unique ID
        sal_uInt32 DiscreteBitmapPrimitive2D::getPrimitive2DID() const
        {
            return PRIMITIVE2D_ID_DISCRETEBITMAPPRIMITIVE2D;
        }
 
} // end of namespace
 
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