metafileprimitive2d.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <drawinglayer/primitive2d/metafileprimitive2d.hxx>
#include <utility>
#include <wmfemfhelper.hxx>
 
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
#include <vcl/canvastools.hxx>
 
using namespace com::sun::star;
 
namespace drawinglayer::primitive2d
{
        void MetafilePrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const
        {
            // Interpret the Metafile and get the content. There should be only one target, as in the start condition,
            // but iterating will be the right thing to do when some push/pop is not closed
            Primitive2DContainer xRetval(wmfemfhelper::interpretMetafile(getMetaFile(), rViewInformation));
 
            if(!xRetval.empty())
            {
                // get target size
                const ::tools::Rectangle aMtfTarget(getMetaFile().GetPrefMapMode().GetOrigin(), getMetaFile().GetPrefSize());
                const basegfx::B2DRange aMtfRange(vcl::unotools::b2DRectangleFromRectangle(aMtfTarget));
 
                // tdf#113197 get content range and check if we have an overlap with
                // defined target range (aMtfRange)
                if (!aMtfRange.isEmpty())
                {
                    const basegfx::B2DRange aContentRange(xRetval.getB2DRange(rViewInformation));
 
                    // also test equal since isInside gives also true for equal
                    if (!aMtfRange.equal(aContentRange) && !aMtfRange.isInside(aContentRange))
                    {
                        // contentRange is partly larger than aMtfRange (stuff sticks
                        // outside), clipping is needed
                        const drawinglayer::primitive2d::Primitive2DReference xMask(
                            new drawinglayer::primitive2d::MaskPrimitive2D(
                                basegfx::B2DPolyPolygon(
                                    basegfx::utils::createPolygonFromRect(
                                        aMtfRange)),
                                std::move(xRetval)));
 
                        xRetval = drawinglayer::primitive2d::Primitive2DContainer{ xMask };
                    }
                }
 
                // create transformation
                basegfx::B2DHomMatrix aAdaptedTransform;
 
                aAdaptedTransform.translate(-aMtfTarget.Left(), -aMtfTarget.Top());
                aAdaptedTransform.scale(
                    aMtfTarget.getOpenWidth() ? 1.0 / aMtfTarget.getOpenWidth() : 1.0,
                    aMtfTarget.getOpenHeight() ? 1.0 / aMtfTarget.getOpenHeight() : 1.0);
                aAdaptedTransform = getTransform() * aAdaptedTransform;
 
                // embed to target transformation
                const Primitive2DReference aEmbeddedTransform(
                    new TransformPrimitive2D(
                        aAdaptedTransform,
                        std::move(xRetval)));
 
                xRetval = Primitive2DContainer { aEmbeddedTransform };
            }
 
            rContainer.append(std::move(xRetval));
        }
 
        MetafilePrimitive2D::MetafilePrimitive2D(
            basegfx::B2DHomMatrix aMetaFileTransform,
            const GDIMetaFile& rMetaFile)
        :   maMetaFileTransform(std::move(aMetaFileTransform)),
            maMetaFile(rMetaFile)
        {
        }
 
        bool MetafilePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
        {
            if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
            {
                const MetafilePrimitive2D& rCompare = static_cast<const MetafilePrimitive2D&>(rPrimitive);
 
                return (getTransform() == rCompare.getTransform()
                    && getMetaFile() == rCompare.getMetaFile());
            }
 
            return false;
        }
 
        basegfx::B2DRange MetafilePrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            // use own implementation to quickly answer the getB2DRange question. The
            // MetafilePrimitive2D assumes that all geometry is inside of the shape. If
            // this is not the case (i have already seen some wrong Metafiles) it should
            // be embedded to a MaskPrimitive2D
            basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
            aRetval.transform(getTransform());
 
            return aRetval;
        }
 
        // from MetafileAccessor
        void MetafilePrimitive2D::accessMetafile(GDIMetaFile& rTargetMetafile) const
        {
            rTargetMetafile = maMetaFile;
        }
 
        // provide unique ID
        sal_uInt32 MetafilePrimitive2D::getPrimitive2DID() const
        {
            return PRIMITIVE2D_ID_METAFILEPRIMITIVE2D;
        }
 
} // end of namespace
 
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