hiddengeometryprimitive2d.hxx

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#pragma once
 
#include <drawinglayer/drawinglayerdllapi.h>
 
#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
 
 
namespace drawinglayer::primitive2d
{
        // This primitive is used to represent geometry for non-visible objects,
        // e.g. a PresObj's outline. To still be able to use primitives for HitTest
        // functionality, the 2d decompositions will produce an as much as possible
        // simplified line geometry encapsulated in this primitive when there is no
        // line geometry. In a further enhanced version this may change to 'if neither
        // filled nor lines' creation criteria. The whole primitive decomposes to nothing,
        // so no one not knowing it will be influenced. Only helper processors for hit test
        // (and maybe BoundRect extractors) will use it and its children subcontent.
        class DRAWINGLAYER_DLLPUBLIC HiddenGeometryPrimitive2D final : public GroupPrimitive2D
        {
        public:
            explicit HiddenGeometryPrimitive2D(Primitive2DContainer&& aChildren);
 
            // despite returning an empty decomposition since it's no visualisation data,
            // range calculation is intended to use hidden geometry, so
            // the local implementation will return the children's range
            virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
 
            virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
 
            // provide unique ID
            virtual sal_uInt32 getPrimitive2DID() const override;
        };
} // end of namespace drawinglayer::primitive2d
 
 
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