include/drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx

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  19
  20 #pragma once
  21
  22 #include <drawinglayer/drawinglayerdllapi.h>
  23
  24 #include <drawinglayer/primitive2d/groupprimitive2d.hxx>
  25
  26
  27 namespace drawinglayer::primitive2d
  28 {
  29         // This primitive is used to represent geometry for non-visible objects,
  30         // e.g. a PresObj's outline. To still be able to use primitives for HitTest
  31         // functionality, the 2d decompositions will produce an as much as possible
  32         // simplified line geometry encapsulated in this primitive when there is no
  33         // line geometry. In a further enhanced version this may change to 'if neither
  34         // filled nor lines' creation criteria. The whole primitive decomposes to nothing,
  35         // so no one not knowing it will be influenced. Only helper processors for hit test
  36         // (and maybe BoundRect extractors) will use it and its children subcontent.
  37         class DRAWINGLAYER_DLLPUBLIC HiddenGeometryPrimitive2D final : public GroupPrimitive2D
  38         {
  39         public:
  40             explicit HiddenGeometryPrimitive2D(Primitive2DContainer&& aChildren);
  41
  42             // despite returning an empty decomposition since it's no visualisation data,
  43             // range calculation is intended to use hidden geometry, so
  44             // the local implementation will return the children's range
  45             virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
  46
  47             /// local decomposition. Implementation will return empty Primitive2DSequence
  48             virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
  49
  50             // provide unique ID
  51             virtual sal_uInt32 getPrimitive2DID() const override;
  52         };
  53 } // end of namespace drawinglayer::primitive2d
  54
  55
  56 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */