include/drawinglayer/processor2d/hittestprocessor2d.hxx

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  19
  20 #ifndef INCLUDED_DRAWINGLAYER_PROCESSOR2D_HITTESTPROCESSOR2D_HXX
  21 #define INCLUDED_DRAWINGLAYER_PROCESSOR2D_HITTESTPROCESSOR2D_HXX
  22
  23 #include <drawinglayer/drawinglayerdllapi.h>
  24 #include <drawinglayer/primitive2d/Primitive2DContainer.hxx>
  25 #include <drawinglayer/processor2d/baseprocessor2d.hxx>
  26
  27 namespace basegfx { class B2DPolygon; }
  28 namespace basegfx { class B2DPolyPolygon; }
  29 namespace drawinglayer::primitive2d { class ScenePrimitive2D; }
  30
  31 namespace drawinglayer::processor2d
  32     {
  33         /** HitTestProcessor2D class
  34
  35             This processor implements a HitTest with the fed primitives,
  36             given tolerance and extras
  37          */
  38         class DRAWINGLAYER_DLLPUBLIC HitTestProcessor2D final : public BaseProcessor2D
  39         {
  40         private:
  41             /// discrete HitTest position
  42             basegfx::B2DPoint           maDiscreteHitPosition;
  43
  44             /// discrete HitTolerance
  45             basegfx::B2DVector          maDiscreteHitTolerancePerAxis;
  46
  47             /// stack of HitPrimitives, taken care of during HitTest run
  48             primitive2d::Primitive2DContainer        maHitStack;
  49
  50             /// flag if HitStack shall be collected as part of the result, default is false
  51             bool                        mbCollectHitStack : 1;
  52
  53             /// Boolean to flag if a hit was found. If yes, fast exit is taken
  54             bool                        mbHit : 1;
  55
  56             /// flag to concentrate on text hits only
  57             bool                        mbHitTextOnly : 1;
  58
  59             /// tooling methods
  60             void processBasePrimitive2D(const primitive2d::BasePrimitive2D& rCandidate) override;
  61             bool checkHairlineHitWithTolerance(
  62                 const basegfx::B2DPolygon& rPolygon,
  63                 const basegfx::B2DVector& rDiscreteHitTolerancePerAxis) const;
  64             bool checkFillHitWithTolerance(
  65                 const basegfx::B2DPolyPolygon& rPolyPolygon,
  66                 const basegfx::B2DVector& rDiscreteHitTolerancePerAxis) const;
  67             void check3DHit(const primitive2d::ScenePrimitive2D& rCandidate);
  68
  69         public:
  70             HitTestProcessor2D(
  71                 const geometry::ViewInformation2D& rViewInformation,
  72                 const basegfx::B2DPoint& rLogicHitPosition,
  73                 const basegfx::B2DVector& rLogicHitTolerancePerAxis,
  74                 bool bHitTextOnly);
  75             virtual ~HitTestProcessor2D() override;
  76
  77             /// switch on collecting primitives for a found hit on maHitStack, default is off
  78             void collectHitStack(bool bCollect) { mbCollectHitStack = bCollect; }
  79
  80             /// get HitStack of primitives, first is the one that created the hit, last is the
  81             /// top-most
  82             const primitive2d::Primitive2DContainer& getHitStack() const { return maHitStack; }
  83
  84             /// data read access
  85             const basegfx::B2DPoint& getDiscreteHitPosition() const { return maDiscreteHitPosition; }
  86             const basegfx::B2DVector& getDiscreteHitTolerance() const { return maDiscreteHitTolerancePerAxis; }
  87             bool getCollectHitStack() const { return mbCollectHitStack; }
  88             bool getHit() const { return mbHit; }
  89             bool getHitTextOnly() const { return mbHitTextOnly; }
  90         };
  91
  92 } // end of namespace drawinglayer::processor2d
  93
  94 #endif // INCLUDED_DRAWINGLAYER_PROCESSOR2D_HITTESTPROCESSOR2D_HXX
  95
  96 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */