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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_SP_FILTER_PRIMITIVE_H
#define SEEN_SP_FILTER_PRIMITIVE_H
/** \file
* Document level base class for all SVG filter primitives.
*/
/*
* Authors:
* Hugo Rodrigues <haa.rodrigues@gmail.com>
* Niko Kiirala <niko@kiirala.com>
*
* Copyright (C) 2006,2007 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "2geom/rect.h"
#include "../sp-object.h"
#include "../sp-dimensions.h"
#define SP_FILTER_PRIMITIVE(obj) (dynamic_cast<SPFilterPrimitive*>((SPObject*)obj))
#define SP_IS_FILTER_PRIMITIVE(obj) (dynamic_cast<const SPFilterPrimitive*>((SPObject*)obj) != NULL)
namespace Inkscape {
namespace Filters {
class Filter;
class FilterPrimitive;
} }
class SPFilterPrimitive : public SPObject, public SPDimensions {
public:
SPFilterPrimitive();
~SPFilterPrimitive() override;
int image_in, image_out;
protected:
void build(SPDocument* doc, Inkscape::XML::Node* repr) override;
void release() override;
void set(SPAttr key, char const* value) override;
void update(SPCtx* ctx, unsigned int flags) override;
Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, unsigned int flags) override;
public:
virtual void build_renderer(Inkscape::Filters::Filter* filter) = 0;
/* Calculate the filter's effect on the region */
virtual Geom::Rect calculate_region(Geom::Rect region);
/* Return true if the object should be allowed to use this filter */
virtual bool valid_for(SPObject const *obj) const {
// This is used by feImage to stop infinate loops.
return true;
};
/* Common initialization for filter primitives */
void renderer_common(Inkscape::Filters::FilterPrimitive *nr_prim);
int name_previous_out();
int read_in(char const *name);
int read_result(char const *name);
};
#endif
/*
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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