include/drawinglayer/primitive2d/glowprimitive2d.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  19
  20 #pragma once
  21
  22 #include <drawinglayer/drawinglayerdllapi.h>
  23
  24 #include <drawinglayer/primitive2d/BufferedDecompositionGroupPrimitive2D.hxx>
  25 #include <tools/color.hxx>
  26
  27 namespace drawinglayer::primitive2d
  28 {
  29 class DRAWINGLAYER_DLLPUBLIC GlowPrimitive2D final : public BufferedDecompositionGroupPrimitive2D
  30 {
  31 private:
  32     /// the Glow color to which all geometry is to be forced; includes alpha
  33     Color maGlowColor;
  34
  35     /// the Glow size, in logical units (100ths of mm)
  36     double mfGlowRadius;
  37
  38     /// last used DiscreteGlowRadius and ClippedRange
  39     double mfLastDiscreteGlowRadius;
  40     basegfx::B2DRange maLastClippedRange;
  41
  42     /// helpers
  43     bool prepareValuesAndcheckValidity(basegfx::B2DRange& rRange, basegfx::B2DRange& rClippedRange,
  44                                        basegfx::B2DVector& rDiscreteSize,
  45                                        double& rfDiscreteGlowRadius,
  46                                        const geometry::ViewInformation2D& rViewInformation) const;
  47
  48 protected:
  49     /** method which is to be used to implement the local decomposition of a 2D primitive. */
  50     virtual void
  51     create2DDecomposition(Primitive2DContainer& rContainer,
  52                           const geometry::ViewInformation2D& rViewInformation) const override;
  53
  54 public:
  55     /// constructor
  56     GlowPrimitive2D(const Color& rGlowColor, double fRadius, Primitive2DContainer&& rChildren);
  57
  58     /// data read access
  59     const Color& getGlowColor() const { return maGlowColor; }
  60     double getGlowRadius() const { return mfGlowRadius; }
  61
  62     /// compare operator
  63     virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
  64
  65     /// get range
  66     virtual basegfx::B2DRange
  67     getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
  68
  69     /// The default implementation will return an empty sequence
  70     virtual void
  71     get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor,
  72                        const geometry::ViewInformation2D& rViewInformation) const override;
  73
  74     /// provide unique ID
  75     virtual sal_uInt32 getPrimitive2DID() const override;
  76 };
  77 } // end of namespace drawinglayer::primitive2d
  78
  79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */