nr-filter-convolve-matrix.h

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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_NR_FILTER_CONVOLVE_MATRIX_H
#define SEEN_NR_FILTER_CONVOLVE_MATRIX_H
 
/*
 * feConvolveMatrix filter primitive renderer
 *
 * Authors:
 *   Felipe Corrêa da Silva Sanches <juca@members.fsf.org>
 *
 * Copyright (C) 2007 authors
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
 
#include "display/nr-filter-primitive.h"
#include <vector>
 
namespace Inkscape {
namespace Filters {
 
class FilterSlot;
 
enum FilterConvolveMatrixEdgeMode
{
    CONVOLVEMATRIX_EDGEMODE_DUPLICATE,
    CONVOLVEMATRIX_EDGEMODE_WRAP,
    CONVOLVEMATRIX_EDGEMODE_NONE,
    CONVOLVEMATRIX_EDGEMODE_ENDTYPE
};
 
class FilterConvolveMatrix : public FilterPrimitive
{
public:
    FilterConvolveMatrix();
    ~FilterConvolveMatrix() override;
 
    void render_cairo(FilterSlot &slot) const override;
    void area_enlarge(Geom::IntRect &area, Geom::Affine const &trans) const override;
    double complexity(Geom::Affine const &ctm) const override;
 
    void set_targetY(int coord);
    void set_targetX(int coord);
    void set_orderY(int coord);
    void set_orderX(int coord);
    void set_kernelMatrix(std::vector<gdouble> km);
    void set_bias(double b);
    void set_divisor(double d);
    void set_edgeMode(FilterConvolveMatrixEdgeMode mode);
    void set_preserveAlpha(bool pa);
 
    Glib::ustring name() const override { return Glib::ustring("Convolve Matrix"); }
 
private:
    std::vector<double> kernelMatrix;
    int targetX, targetY;
    int orderX, orderY;
    double divisor, bias;
    FilterConvolveMatrixEdgeMode edgeMode;
    bool preserveAlpha;
};
 
} // namespace Filters
} // namespace Inkscape
 
#endif // SEEN_NR_FILTER_CONVOLVE_MATRIX_H
/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
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