nr-filter-blend.h revision cfed8dd91c0f5615fdcafa903781b0ad3d9759e5
#ifndef __NR_FILTER_BLEND_H__
#define __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, read the file 'COPYING' for more information
*/
#include "display/nr-filter-primitive.h"
#include "display/nr-filter-slot.h"
#include "libnr/nr-matrix.h"
namespace NR {
enum FilterBlendMode {
BLEND_NORMAL,
BLEND_MULTIPLY,
BLEND_SCREEN,
BLEND_DARKEN,
BLEND_LIGHTEN
};
class FilterBlend : public FilterPrimitive {
public:
FilterBlend();
static FilterPrimitive *create();
virtual ~FilterBlend();
virtual int render(FilterSlot &slot, Matrix const &trans);
virtual void set_input(int slot);
virtual void set_input(int input, int slot);
void set_mode(FilterBlendMode mode);
private:
FilterBlendMode _blend_mode;
int _input2;
};
} /* namespace NR */
#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:
*/
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