xref: /aoo4110/main/drawinglayer/source/primitive2d/discretebitmapprimitive2d.cxx (revision b1cdbd2c)

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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"

#include <drawinglayer/primitive2d/discretebitmapprimitive2d.hxx>
#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace primitive2d
	{
		Primitive2DSequence DiscreteBitmapPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
		{
			// use getViewTransformation() and getObjectTransformation() from
			// ObjectAndViewTransformationDependentPrimitive2D to create a BitmapPrimitive2D
			// with the correct mapping
			Primitive2DSequence xRetval;

			if(!getBitmapEx().IsEmpty())
			{
				// 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 eventual 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
				const Primitive2DReference xRef(new BitmapPrimitive2D(getBitmapEx(), aObjectTransform));
				xRetval = Primitive2DSequence(&xRef, 1);
			}

			return xRetval;
		}

		DiscreteBitmapPrimitive2D::DiscreteBitmapPrimitive2D(
			const BitmapEx& rBitmapEx,
			const basegfx::B2DPoint& rTopLeft)
		:	ObjectAndViewTransformationDependentPrimitive2D(),
			maBitmapEx(rBitmapEx),
			maTopLeft(rTopLeft)
		{
		}

		bool DiscreteBitmapPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
		{
			if(ObjectAndViewTransformationDependentPrimitive2D::operator==(rPrimitive))
			{
				const DiscreteBitmapPrimitive2D& rCompare = (DiscreteBitmapPrimitive2D&)rPrimitive;

				return (getBitmapEx() == rCompare.getBitmapEx()
					&& getTopLeft() == rCompare.getTopLeft());
			}

			return false;
		}

		// provide unique ID
		ImplPrimitrive2DIDBlock(DiscreteBitmapPrimitive2D, PRIMITIVE2D_ID_DISCRETEBITMAPPRIMITIVE2D)

	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////
// eof