nr-filter-gaussian.h

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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_NR_FILTER_GAUSSIAN_H
#define SEEN_NR_FILTER_GAUSSIAN_H
 
/*
 * Gaussian blur renderer
 *
 * Authors:
 *   Niko Kiirala <niko@kiirala.com>
 *   bulia byak
 *   Jasper van de Gronde <th.v.d.gronde@hccnet.nl>
 *
 * Copyright (C) 2006 authors
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
 
#include <2geom/forward.h>
#include "display/nr-filter-primitive.h"
 
enum
{
    BLUR_QUALITY_BEST = 2,
    BLUR_QUALITY_BETTER = 1,
    BLUR_QUALITY_NORMAL = 0,
    BLUR_QUALITY_WORSE = -1,
    BLUR_QUALITY_WORST = -2
};
 
namespace Inkscape {
namespace Filters {
 
class FilterGaussian : public FilterPrimitive
{
public:
    FilterGaussian();
    ~FilterGaussian() override;
 
    void render_cairo(FilterSlot &slot) const override;
    void area_enlarge(Geom::IntRect &area, Geom::Affine const &m) const override;
    bool can_handle_affine(Geom::Affine const &m) const override;
    double complexity(Geom::Affine const &ctm) const override;
 
    void set_deviation(double deviation);
 
    void set_deviation(double x, double y);
 
    Glib::ustring name() const override { return Glib::ustring("Gaussian Blur"); }
 
private:
    double _deviation_x;
    double _deviation_y;
};
 
} // namespace Filters
} // namespace Inkscape
 
#endif // SEEN_NR_FILTER_GAUSSIAN_H
/*
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  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
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  End:
*/
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