vcl/inc/bitmap/BitmapScaleConvolutionFilter.hxx

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  19
  20 #ifndef VCL_INC_BITMAP_BITMAPSCALECONVOLUTIONFILTER_HXX
  21 #define VCL_INC_BITMAP_BITMAPSCALECONVOLUTIONFILTER_HXX
  22
  23 #include <vcl/BitmapFilter.hxx>
  24
  25 #include <ResampleKernel.hxx>
  26
  27 namespace vcl
  28 {
  29 class BitmapScaleConvolutionFilter : public BitmapFilter
  30 {
  31 protected:
  32     BitmapScaleConvolutionFilter(const double& rScaleX, const double& rScaleY,
  33                                  std::unique_ptr<Kernel> pKernel)
  34         : mxKernel(std::move(pKernel))
  35         , mrScaleX(rScaleX)
  36         , mrScaleY(rScaleY)
  37     {
  38     }
  39
  40     virtual BitmapEx execute(BitmapEx const& rBitmap) const override;
  41
  42 private:
  43     std::unique_ptr<Kernel> mxKernel;
  44     double mrScaleX;
  45     double mrScaleY;
  46 };
  47
  48 class VCL_DLLPUBLIC BitmapScaleBilinearFilter final : public BitmapScaleConvolutionFilter
  49 {
  50 public:
  51     BitmapScaleBilinearFilter(const double& rScaleX, const double& rScaleY)
  52         : BitmapScaleConvolutionFilter(rScaleX, rScaleY, std::make_unique<BilinearKernel>())
  53     {
  54     }
  55 };
  56
  57 class VCL_DLLPUBLIC BitmapScaleBicubicFilter final : public BitmapScaleConvolutionFilter
  58 {
  59 public:
  60     BitmapScaleBicubicFilter(const double& rScaleX, const double& rScaleY)
  61         : BitmapScaleConvolutionFilter(rScaleX, rScaleY, std::make_unique<BicubicKernel>())
  62     {
  63     }
  64 };
  65
  66 class VCL_DLLPUBLIC BitmapScaleLanczos3Filter final : public BitmapScaleConvolutionFilter
  67 {
  68 public:
  69     BitmapScaleLanczos3Filter(const double& rScaleX, const double& rScaleY)
  70         : BitmapScaleConvolutionFilter(rScaleX, rScaleY, std::make_unique<Lanczos3Kernel>())
  71     {
  72     }
  73 };
  74 }
  75
  76 #endif // VCL_INC_BITMAPSCALECONVOLUTIONFILTER_HXX
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */