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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_NR_FILTER_BLEND_H
#define SEEN_NR_FILTER_BLEND_H
/*
* SVG feBlend renderer
*
* "This filter composites two objects together using commonly used
* imaging software blending modes. It performs a pixel-wise combination
* of two input images."
* http://www.w3.org/TR/SVG11/filters.html#feBlend
*
* Authors:
* Niko Kiirala <niko@kiirala.com>
*
* Copyright (C) 2007 authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <set>
#include "display/nr-filter-primitive.h"
namespace Inkscape {
namespace Filters {
enum FilterBlendMode {
BLEND_NORMAL,
BLEND_MULTIPLY,
BLEND_SCREEN,
BLEND_DARKEN,
BLEND_LIGHTEN,
// New in CSS Compositing and Blending Level 1
BLEND_OVERLAY,
BLEND_COLORDODGE,
BLEND_COLORBURN,
BLEND_HARDLIGHT,
BLEND_SOFTLIGHT,
BLEND_DIFFERENCE,
BLEND_EXCLUSION,
BLEND_HUE,
BLEND_SATURATION,
BLEND_COLOR,
BLEND_LUMINOSITY,
BLEND_ENDMODE,
};
class FilterBlend : public FilterPrimitive {
public:
FilterBlend();
static FilterPrimitive *create();
~FilterBlend() override;
void render_cairo(FilterSlot &slot) override;
bool can_handle_affine(Geom::Affine const &) override;
double complexity(Geom::Affine const &ctm) override;
bool uses_background() override;
void set_input(int slot) override;
void set_input(int input, int slot) override;
void set_mode(FilterBlendMode mode);
Glib::ustring name() override { return Glib::ustring("Blend"); }
private:
static const std::set<FilterBlendMode> _valid_modes;
FilterBlendMode _blend_mode;
int _input2;
};
} /* namespace Filters */
} /* namespace Inkscape */
#endif /* __NR_FILTER_BLEND_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:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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