drawinglayer/source/primitive2d/metafileprimitive2d.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  18  */
  19
  20 #include <drawinglayer/primitive2d/metafileprimitive2d.hxx>
  21 #include <utility>
  22 #include <wmfemfhelper.hxx>
  23
  24 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  25 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  26 #include <basegfx/polygon/b2dpolygontools.hxx>
  27 #include <drawinglayer/primitive2d/maskprimitive2d.hxx>
  28 #include <vcl/canvastools.hxx>
  29
  30 using namespace com::sun::star;
  31
  32 namespace drawinglayer::primitive2d
  33 {
  34         Primitive2DReference MetafilePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
  35         {
  36             // Interpret the Metafile and get the content. There should be only one target, as in the start condition,
  37             // but iterating will be the right thing to do when some push/pop is not closed
  38             Primitive2DContainer xRetval(wmfemfhelper::interpretMetafile(getMetaFile(), rViewInformation));
  39
  40             if(xRetval.empty())
  41                 return nullptr;
  42
  43             // get target size
  44             const ::tools::Rectangle aMtfTarget(getMetaFile().GetPrefMapMode().GetOrigin(), getMetaFile().GetPrefSize());
  45             const basegfx::B2DRange aMtfRange(vcl::unotools::b2DRectangleFromRectangle(aMtfTarget));
  46
  47             // tdf#113197 get content range and check if we have an overlap with
  48             // defined target range (aMtfRange)
  49             if (!aMtfRange.isEmpty())
  50             {
  51                 const basegfx::B2DRange aContentRange(xRetval.getB2DRange(rViewInformation));
  52
  53                 // also test equal since isInside gives also true for equal
  54                 if (!aMtfRange.equal(aContentRange) && !aMtfRange.isInside(aContentRange))
  55                 {
  56                     // contentRange is partly larger than aMtfRange (stuff sticks
  57                     // outside), clipping is needed
  58                     const drawinglayer::primitive2d::Primitive2DReference xMask(
  59                         new drawinglayer::primitive2d::MaskPrimitive2D(
  60                             basegfx::B2DPolyPolygon(
  61                                 basegfx::utils::createPolygonFromRect(
  62                                     aMtfRange)),
  63                             std::move(xRetval)));
  64
  65                     xRetval = drawinglayer::primitive2d::Primitive2DContainer{ xMask };
  66                 }
  67             }
  68
  69             // create transformation
  70             basegfx::B2DHomMatrix aAdaptedTransform;
  71
  72             aAdaptedTransform.translate(-aMtfTarget.Left(), -aMtfTarget.Top());
  73             aAdaptedTransform.scale(
  74                 aMtfTarget.getOpenWidth() ? 1.0 / aMtfTarget.getOpenWidth() : 1.0,
  75                 aMtfTarget.getOpenHeight() ? 1.0 / aMtfTarget.getOpenHeight() : 1.0);
  76             aAdaptedTransform = getTransform() * aAdaptedTransform;
  77
  78             // embed to target transformation
  79             const Primitive2DReference aEmbeddedTransform(
  80                 new TransformPrimitive2D(
  81                     aAdaptedTransform,
  82                     std::move(xRetval)));
  83
  84             return aEmbeddedTransform;
  85         }
  86
  87         MetafilePrimitive2D::MetafilePrimitive2D(
  88             basegfx::B2DHomMatrix aMetaFileTransform,
  89             const GDIMetaFile& rMetaFile)
  90         :   maMetaFileTransform(std::move(aMetaFileTransform)),
  91             maMetaFile(rMetaFile)
  92         {
  93             // activate callback to flush buffered decomposition content
  94             setCallbackSeconds(20);
  95         }
  96
  97         bool MetafilePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
  98         {
  99             if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
 100             {
 101                 const MetafilePrimitive2D& rCompare = static_cast<const MetafilePrimitive2D&>(rPrimitive);
 102
 103                 return (getTransform() == rCompare.getTransform()
 104                     && getMetaFile() == rCompare.getMetaFile());
 105             }
 106
 107             return false;
 108         }
 109
 110         basegfx::B2DRange MetafilePrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
 111         {
 112             // use own implementation to quickly answer the getB2DRange question. The
 113             // MetafilePrimitive2D assumes that all geometry is inside of the shape. If
 114             // this is not the case (i have already seen some wrong Metafiles) it should
 115             // be embedded to a MaskPrimitive2D
 116             basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
 117             aRetval.transform(getTransform());
 118
 119             return aRetval;
 120         }
 121
 122         // from MetafileAccessor
 123         void MetafilePrimitive2D::accessMetafile(GDIMetaFile& rTargetMetafile) const
 124         {
 125             rTargetMetafile = maMetaFile;
 126         }
 127
 128         // provide unique ID
 129         sal_uInt32 MetafilePrimitive2D::getPrimitive2DID() const
 130         {
 131             return PRIMITIVE2D_ID_METAFILEPRIMITIVE2D;
 132         }
 133
 134 } // end of namespace
 135
 136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */