vcl/inc/BitmapScaleConvolutionFilter.hxx

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