BitmapScaleConvolutionFilter.hxx

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#ifndef VCL_INC_BITMAP_BITMAPSCALECONVOLUTIONFILTER_HXX
#define VCL_INC_BITMAP_BITMAPSCALECONVOLUTIONFILTER_HXX
 
#include <vcl/BitmapFilter.hxx>
 
#include <ResampleKernel.hxx>
 
namespace vcl
{
class BitmapScaleConvolutionFilter : public BitmapFilter
{
protected:
    BitmapScaleConvolutionFilter(const double& rScaleX, const double& rScaleY,
                                 std::unique_ptr<Kernel> pKernel)
        : mxKernel(std::move(pKernel))
        , mrScaleX(rScaleX)
        , mrScaleY(rScaleY)
    {
    }
 
    virtual BitmapEx execute(BitmapEx const& rBitmap) const override;
 
private:
    std::unique_ptr<Kernel> mxKernel;
    double mrScaleX;
    double mrScaleY;
};
 
class VCL_DLLPUBLIC BitmapScaleBilinearFilter final : public BitmapScaleConvolutionFilter
{
public:
    BitmapScaleBilinearFilter(const double& rScaleX, const double& rScaleY)
        : BitmapScaleConvolutionFilter(rScaleX, rScaleY, std::make_unique<BilinearKernel>())
    {
    }
};
 
class VCL_DLLPUBLIC BitmapScaleBicubicFilter final : public BitmapScaleConvolutionFilter
{
public:
    BitmapScaleBicubicFilter(const double& rScaleX, const double& rScaleY)
        : BitmapScaleConvolutionFilter(rScaleX, rScaleY, std::make_unique<BicubicKernel>())
    {
    }
};
 
class VCL_DLLPUBLIC BitmapScaleLanczos3Filter final : public BitmapScaleConvolutionFilter
{
public:
    BitmapScaleLanczos3Filter(const double& rScaleX, const double& rScaleY)
        : BitmapScaleConvolutionFilter(rScaleX, rScaleY, std::make_unique<Lanczos3Kernel>())
    {
    }
};
}
 
#endif // VCL_INC_BITMAPSCALECONVOLUTIONFILTER_HXX
 
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