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
  25 #include <drawinglayer/processor2d/baseprocessor2d.hxx>
  26
  27 namespace basegfx { class B2DPolygon; }
  28 namespace basegfx { class B2DPolyPolygon; }
  29 namespace drawinglayer { namespace primitive2d { class ScenePrimitive2D; }}
  30
  31 namespace drawinglayer
  32 {
  33     namespace processor2d
  34     {
  35         /** HitTestProcessor2D class
  36
  37             This processor implements a HitTest with the feeded primitives,
  38             given tolerance and extras
  39          */
  40         class DRAWINGLAYER_DLLPUBLIC HitTestProcessor2D : public BaseProcessor2D
  41         {
  42         private:
  43             /// discrete HitTest position
  44             basegfx::B2DPoint           maDiscreteHitPosition;
  45
  46             /// discrete HitTolerance
  47             double                      mfDiscreteHitTolerance;
  48
  49             /// stack of HitPrimitives, taken care of during HitTest run
  50             primitive2d::Primitive2DContainer        maHitStack;
  51
  52             /// flag if HitStack shall be collected as part of the result, default is false
  53             bool                        mbCollectHitStack : 1;
  54
  55             /// Boolean to flag if a hit was found. If yes, fast exit is taken
  56             bool                        mbHit : 1;
  57
  58             /// flag to concentrate on text hits only
  59             bool                        mbHitTextOnly : 1;
  60
  61             /// tooling methods
  62             void processBasePrimitive2D(const primitive2d::BasePrimitive2D& rCandidate) override;
  63             bool checkHairlineHitWithTolerance(
  64                 const basegfx::B2DPolygon& rPolygon,
  65                 double fDiscreteHitTolerance) const;
  66             bool checkFillHitWithTolerance(
  67                 const basegfx::B2DPolyPolygon& rPolyPolygon,
  68                 double fDiscreteHitTolerance) const;
  69             void check3DHit(const primitive2d::ScenePrimitive2D& rCandidate);
  70
  71         public:
  72             HitTestProcessor2D(
  73                 const geometry::ViewInformation2D& rViewInformation,
  74                 const basegfx::B2DPoint& rLogicHitPosition,
  75                 double fLogicHitTolerance,
  76                 bool bHitTextOnly);
  77             virtual ~HitTestProcessor2D() override;
  78
  79             /// switch on collecting primitives for a found hit on maHitStack, default is off
  80             void collectHitStack(bool bCollect) { mbCollectHitStack = bCollect; }
  81
  82             /// get HitStack of primitives, first is the one that created the hit, last is the
  83             /// top-most
  84             const primitive2d::Primitive2DContainer& getHitStack() const { return maHitStack; }
  85
  86             /// data read access
  87             const basegfx::B2DPoint& getDiscreteHitPosition() const { return maDiscreteHitPosition; }
  88             double getDiscreteHitTolerance() const { return mfDiscreteHitTolerance; }
  89             bool getCollectHitStack() const { return mbCollectHitStack; }
  90             bool getHit() const { return mbHit; }
  91             bool getHitTextOnly() const { return mbHitTextOnly; }
  92         };
  93     } // end of namespace processor2d
  94 } // end of namespace drawinglayer
  95
  96 #endif // INCLUDED_DRAWINGLAYER_PROCESSOR2D_HITTESTPROCESSOR2D_HXX
  97
  98 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */