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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_PROTRUSIONS_H__
#define SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_PROTRUSIONS_H__
/* Change the 'PROTRUSIONS' above to be your file name */
/*
* Copyright (C) 2008 Authors:
* Ted Gould <ted@gould.cx>
* Copyright (C) 2011 Authors:
* Ivan Louette (filters)
* Nicolas Dufour (UI) <nicoduf@yahoo.fr>
*
* Protrusion filters
* Snow
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
/* ^^^ Change the copyright to be you and your e-mail address ^^^ */
#include "filter.h"
#include "extension/internal/clear-n_.h"
#include "extension/system.h"
#include "extension/extension.h"
namespace Inkscape {
namespace Extension {
namespace Internal {
namespace Filter {
/**
\brief Custom predefined Snow filter.
Snow has fallen on object.
*/
class Snow : public Inkscape::Extension::Internal::Filter::Filter {
protected:
gchar const * get_filter_text (Inkscape::Extension::Extension * ext) override;
public:
Snow ( ) : Filter() { };
~Snow ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
public:
static void init () {
// clang-format off
Inkscape::Extension::build_from_mem(
"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
"<name>" N_("Snow Crest") "</name>\n"
"<id>org.inkscape.effect.filter.snow</id>\n"
"<param name=\"drift\" gui-text=\"" N_("Drift Size") "\" type=\"float\" appearance=\"full\" min=\"0.0\" max=\"20.0\">3.5</param>\n"
"<effect>\n"
"<object-type>all</object-type>\n"
"<effects-menu>\n"
"<submenu name=\"" N_("Filters") "\">\n"
"<submenu name=\"Protrusions\"/>\n"
"</submenu>\n"
"</effects-menu>\n"
"<menu-tip>" N_("Snow has fallen on object") "</menu-tip>\n"
"</effect>\n"
"</inkscape-extension>\n", new Snow());
// clang-format on
};
};
gchar const *
Snow::get_filter_text (Inkscape::Extension::Extension * ext)
{
if (_filter != nullptr) g_free((void *)_filter);
std::ostringstream drift;
drift << ext->get_param_float("drift");
// clang-format off
_filter = g_strdup_printf(
"<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" style=\"color-interpolation-filters:sRGB;\" inkscape:label=\"Snow\">\n"
"<feConvolveMatrix order=\"3 3\" kernelMatrix=\"1 1 1 0 0 0 -1 -1 -1\" preserveAlpha=\"false\" divisor=\"3\"/>\n"
"<feMorphology operator=\"dilate\" radius=\"1 %s\"/>\n"
"<feGaussianBlur stdDeviation=\"1.6270889487870621\" result=\"result0\"/>\n"
"<feColorMatrix values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0\" result=\"result1\"/>\n"
"<feOffset dx=\"0\" dy=\"1\" result=\"result5\"/>\n"
"<feDiffuseLighting in=\"result0\" diffuseConstant=\"2.2613065326633168\" surfaceScale=\"1\">\n"
"<feDistantLight azimuth=\"225\" elevation=\"32\"/>\n"
"</feDiffuseLighting>\n"
"<feComposite in2=\"result1\" operator=\"in\" result=\"result2\"/>\n"
"<feColorMatrix values=\"0.4 0 0 0 0.6 0 0.4 0 0 0.6 0 0 0 0 1 0 0 0 1 0\" result=\"result4\"/>\n"
"<feComposite in2=\"result5\" in=\"result4\"/>\n"
"<feComposite in2=\"SourceGraphic\"/>\n"
"</filter>\n", drift.str().c_str());
// clang-format on
return _filter;
}; /* Snow filter */
}; /* namespace Filter */
}; /* namespace Internal */
}; /* namespace Extension */
}; /* namespace Inkscape */
/* Change the 'PROTRUSIONS' below to be your file name */
#endif /* SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_PROTRUSIONS_H__ */
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