nr-filter-colormatrix.h

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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_NR_FILTER_COLOR_MATRIX_H
#define SEEN_NR_FILTER_COLOR_MATRIX_H
 
/*
 * feColorMatrix 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 <vector>
#include <2geom/forward.h>
#include "display/nr-filter-primitive.h"
 
typedef unsigned int guint32;
typedef signed int gint32;
 
namespace Inkscape {
namespace Filters {
 
class FilterSlot;
 
enum FilterColorMatrixType
{
    COLORMATRIX_MATRIX,
    COLORMATRIX_SATURATE,
    COLORMATRIX_HUEROTATE,
    COLORMATRIX_LUMINANCETOALPHA,
    COLORMATRIX_ENDTYPE
};
 
class FilterColorMatrix : public FilterPrimitive
{
public:
    FilterColorMatrix();
    ~FilterColorMatrix() override;
 
    void render_cairo(FilterSlot &slot) const override;
    bool can_handle_affine(Geom::Affine const &) const override;
    double complexity(Geom::Affine const &ctm) const override;
 
    virtual void set_type(FilterColorMatrixType type);
    virtual void set_value(double value);
    virtual void set_values(std::vector<double> const &values);
 
    Glib::ustring name() const override { return Glib::ustring("Color Matrix"); }
 
public:
    struct ColorMatrixMatrix
    {
        ColorMatrixMatrix(std::vector<double> const &values);
        guint32 operator()(guint32 in) const;
    private:
        gint32 _v[20];
    };
 
private:
    std::vector<double> values;
    double value;
    FilterColorMatrixType type;
};
 
} // namespace Filters
} // namespace Inkscape
 
#endif // SEEN_NR_FILTER_COLOR_MATRIX_H
/*
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  End:
*/
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