discreteshadowprimitive2d.cxx

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#include <drawinglayer/primitive2d/discreteshadowprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <osl/diagnose.h>
#include <toolkit/helper/vclunohelper.hxx>
 
 
namespace drawinglayer::primitive2d
{
        DiscreteShadow::DiscreteShadow(const BitmapEx& rBitmapEx)
        :   maBitmapEx(rBitmapEx)
        {
            maBitmapEx.Invert(); // convert transparency to alpha
            const Size& rBitmapSize = getBitmapEx().GetSizePixel();
 
            if(rBitmapSize.Width() != rBitmapSize.Height() || rBitmapSize.Width() < 7)
            {
                OSL_ENSURE(false, "DiscreteShadowPrimitive2D: wrong bitmap format (!)");
                maBitmapEx = BitmapEx();
            }
        }
 
        const BitmapEx& DiscreteShadow::getTopLeft() const
        {
            if(maTopLeft.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maTopLeft = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maTopLeft.Crop(
                    ::tools::Rectangle(Point(0, 0), Size((nQuarter * 2) + 1, (nQuarter * 2) + 1)));
            }
 
            return maTopLeft;
        }
 
        const BitmapEx& DiscreteShadow::getTop() const
        {
            if(maTop.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maTop = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maTop.Crop(
                    ::tools::Rectangle(Point((nQuarter * 2) + 1, 0), Size(1, nQuarter)));
            }
 
            return maTop;
        }
 
        const BitmapEx& DiscreteShadow::getTopRight() const
        {
            if(maTopRight.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maTopRight = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maTopRight.Crop(
                    ::tools::Rectangle(Point((nQuarter * 2) + 2, 0), Size((nQuarter * 2) + 1, (nQuarter * 2) + 1)));
            }
 
            return maTopRight;
        }
 
        const BitmapEx& DiscreteShadow::getRight() const
        {
            if(maRight.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maRight = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maRight.Crop(
                    ::tools::Rectangle(Point((nQuarter * 3) + 3, (nQuarter * 2) + 1), Size(nQuarter, 1)));
            }
 
            return maRight;
        }
 
        const BitmapEx& DiscreteShadow::getBottomRight() const
        {
            if(maBottomRight.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maBottomRight = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maBottomRight.Crop(
                    ::tools::Rectangle(Point((nQuarter * 2) + 2, (nQuarter * 2) + 2), Size((nQuarter * 2) + 1, (nQuarter * 2) + 1)));
            }
 
            return maBottomRight;
        }
 
        const BitmapEx& DiscreteShadow::getBottom() const
        {
            if(maBottom.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maBottom = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maBottom.Crop(
                    ::tools::Rectangle(Point((nQuarter * 2) + 1, (nQuarter * 3) + 3), Size(1, nQuarter)));
            }
 
            return maBottom;
        }
 
        const BitmapEx& DiscreteShadow::getBottomLeft() const
        {
            if(maBottomLeft.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maBottomLeft = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maBottomLeft.Crop(
                    ::tools::Rectangle(Point(0, (nQuarter * 2) + 2), Size((nQuarter * 2) + 1, (nQuarter * 2) + 1)));
            }
 
            return maBottomLeft;
        }
 
        const BitmapEx& DiscreteShadow::getLeft() const
        {
            if(maLeft.IsEmpty())
            {
                const sal_Int32 nQuarter((getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const_cast< DiscreteShadow* >(this)->maLeft = getBitmapEx();
                const_cast< DiscreteShadow* >(this)->maLeft.Crop(
                    ::tools::Rectangle(Point(0, (nQuarter * 2) + 1), Size(nQuarter, 1)));
            }
 
            return maLeft;
        }
 
} // end of namespace
 
 
namespace drawinglayer::primitive2d
{
        void DiscreteShadowPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            Primitive2DContainer xRetval;
 
            if(getDiscreteShadow().getBitmapEx().IsEmpty())
                return;
 
            const sal_Int32 nQuarter((getDiscreteShadow().getBitmapEx().GetSizePixel().Width() - 3) >> 2);
            const basegfx::B2DVector aScale(getTransform() * basegfx::B2DVector(1.0, 1.0));
            const double fSingleX(getDiscreteUnit() / aScale.getX());
            const double fSingleY(getDiscreteUnit() / aScale.getY());
            const double fBorderX(fSingleX * nQuarter);
            const double fBorderY(fSingleY * nQuarter);
            const double fBigLenX((fBorderX * 2.0) + fSingleX);
            const double fBigLenY((fBorderY * 2.0) + fSingleY);
 
            xRetval.resize(8);
 
            // TopLeft
            xRetval[0] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getTopLeft(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        fBigLenX,
                        fBigLenY,
                        -fBorderX,
                        -fBorderY)));
 
            // Top
            xRetval[1] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getTop(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        1.0 - (2.0 * (fBorderX + fSingleX)) + fSingleX,
                        fBorderY,
                        fBorderX + fSingleX,
                        -fBorderY)));
 
            // TopRight
            xRetval[2] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getTopRight(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        fBigLenX,
                        fBigLenY,
                        1.0 - fBorderX,
                        -fBorderY)));
 
            // Right
            xRetval[3] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getRight(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        fBorderX,
                        1.0 - (2.0 * (fBorderY + fSingleY)) + fSingleY,
                        1.0 + fSingleX,
                        fBorderY + fSingleY)));
 
            // BottomRight
            xRetval[4] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getBottomRight(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        fBigLenX,
                        fBigLenY,
                        1.0 - (fBorderX + fSingleX) + fSingleX,
                        1.0 - (fBorderY + fSingleY) + fSingleY)));
 
            // Bottom
            xRetval[5] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getBottom(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        1.0 - (2.0 * (fBorderX + fSingleX)) + fSingleX,
                        fBorderY,
                        fBorderX + fSingleX,
                        1.0 + fSingleY)));
 
            // BottomLeft
            xRetval[6] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getBottomLeft(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        fBigLenX,
                        fBigLenY,
                        -fBorderX,
                        1.0 - fBorderY)));
 
            // Left
            xRetval[7] = Primitive2DReference(
                new BitmapPrimitive2D(
                    getDiscreteShadow().getLeft(),
                    basegfx::utils::createScaleTranslateB2DHomMatrix(
                        fBorderX,
                        1.0 - (2.0 * (fBorderY + fSingleY)) + fSingleY,
                        -fBorderX,
                        fBorderY + fSingleY)));
 
            // put all in object transformation to get to target positions
            rContainer.push_back(
                new TransformPrimitive2D(
                    getTransform(),
                    std::move(xRetval)));
        }
 
        DiscreteShadowPrimitive2D::DiscreteShadowPrimitive2D(
            const basegfx::B2DHomMatrix& rTransform,
            const DiscreteShadow& rDiscreteShadow)
        :   maTransform(rTransform),
            maDiscreteShadow(rDiscreteShadow)
        {
        }
 
        bool DiscreteShadowPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
        {
            if(DiscreteMetricDependentPrimitive2D::operator==(rPrimitive))
            {
                const DiscreteShadowPrimitive2D& rCompare = static_cast<const DiscreteShadowPrimitive2D&>(rPrimitive);
 
                return (getTransform() == rCompare.getTransform()
                    && getDiscreteShadow() == rCompare.getDiscreteShadow());
            }
 
            return false;
        }
 
        basegfx::B2DRange DiscreteShadowPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
        {
            if(getDiscreteShadow().getBitmapEx().IsEmpty())
            {
                // no graphics without valid bitmap definition
                return basegfx::B2DRange();
            }
            else
            {
                // prepare normal objectrange
                basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
                aRetval.transform(getTransform());
 
                // extract discrete shadow size and grow
                const basegfx::B2DVector aScale(rViewInformation.getViewTransformation() * basegfx::B2DVector(1.0, 1.0));
                const sal_Int32 nQuarter((getDiscreteShadow().getBitmapEx().GetSizePixel().Width() - 3) >> 2);
                const double fGrowX((1.0 / aScale.getX()) * nQuarter);
                const double fGrowY((1.0 / aScale.getY()) * nQuarter);
                aRetval.grow(std::max(fGrowX, fGrowY));
 
                return aRetval;
            }
        }
 
        // provide unique ID
        sal_uInt32 DiscreteShadowPrimitive2D::getPrimitive2DID() const
        {
            return PRIMITIVE2D_ID_DISCRETESHADOWPRIMITIVE2D;
        }
 
} // end of namespace
 
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