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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_SHADOWS_H__
#define SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_SHADOWS_H__
/* Change the 'SHADOWS' above to be your file name */
/*
* Copyright (C) 2013 Authors:
* Ivan Louette (filters)
* Nicolas Dufour (UI) <nicoduf@yahoo.fr>
*
* Shadow filters
* Drop shadow
*
* 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 Drop shadow filter.
Colorizable Drop shadow.
Filter's parameters:
* Blur radius (0.->200., default 3) -> blur (stdDeviation)
* Horizontal offset (-50.->50., default 6.0) -> offset (dx)
* Vertical offset (-50.->50., default 6.0) -> offset (dy)
* Blur type (enum, default outer) ->
outer = composite1 (operator="in"), composite2 (operator="over", in1="SourceGraphic", in2="offset")
inner = composite1 (operator="out"), composite2 (operator="atop", in1="offset", in2="SourceGraphic")
innercut = composite1 (operator="in"), composite2 (operator="out", in1="offset", in2="SourceGraphic")
outercut = composite1 (operator="out"), composite2 (operator="in", in1="SourceGraphic", in2="offset")
shadow = composite1 (operator="out"), composite2 (operator="atop", in1="offset", in2="offset")
* Color (guint, default 0,0,0,127) -> flood (flood-opacity, flood-color)
* Use object's color (boolean, default false) -> composite1 (in1, in2)
*/
class ColorizableDropShadow : public Inkscape::Extension::Internal::Filter::Filter {
protected:
gchar const * get_filter_text (Inkscape::Extension::Extension * ext) override;
public:
ColorizableDropShadow ( ) : Filter() { };
~ColorizableDropShadow ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
static void init () {
// clang-format off
Inkscape::Extension::build_from_mem(
"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
"<name>" N_("Drop Shadow") "</name>\n"
"<id>org.inkscape.effect.filter.ColorDropShadow</id>\n"
"<param name=\"tab\" type=\"notebook\">\n"
"<page name=\"optionstab\" gui-text=\"" N_("Options") "\">\n"
"<param name=\"blur\" gui-text=\"" N_("Blur radius (px)") "\" type=\"float\" appearance=\"full\" min=\"0.0\" max=\"200.0\">3.0</param>\n"
"<param name=\"xoffset\" gui-text=\"" N_("Horizontal offset (px)") "\" type=\"float\" appearance=\"full\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
"<param name=\"yoffset\" gui-text=\"" N_("Vertical offset (px)") "\" type=\"float\" appearance=\"full\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
"<param name=\"type\" gui-text=\"" N_("Shadow type:") "\" type=\"optiongroup\" appearance=\"combo\" >\n"
"<option value=\"outer\">" N_("Outer") "</option>\n"
"<option value=\"inner\">" N_("Inner") "</option>\n"
"<option value=\"outercut\">" N_("Outer cutout") "</option>\n"
"<option value=\"innercut\">" N_("Inner cutout") "</option>\n"
"<option value=\"shadow\">" N_("Shadow only") "</option>\n"
"</param>\n"
"</page>\n"
"<page name=\"coltab\" gui-text=\"" N_("Blur color") "\">\n"
"<param name=\"color\" gui-text=\"" N_("Color") "\" type=\"color\">127</param>\n"
"<param name=\"objcolor\" gui-text=\"" N_("Use object's color") "\" type=\"bool\" >false</param>\n"
"</page>\n"
"</param>\n"
"<effect>\n"
"<object-type>all</object-type>\n"
"<effects-menu>\n"
"<submenu name=\"" N_("Filters") "\">\n"
"<submenu name=\"" N_("Shadows and Glows") "\"/>\n"
"</submenu>\n"
"</effects-menu>\n"
"<menu-tip>" N_("Colorizable Drop shadow") "</menu-tip>\n"
"</effect>\n"
"</inkscape-extension>\n", new ColorizableDropShadow());
// clang-format on
};
};
gchar const *
ColorizableDropShadow::get_filter_text (Inkscape::Extension::Extension * ext)
{
if (_filter != nullptr) g_free((void *)_filter);
std::ostringstream blur;
std::ostringstream a;
std::ostringstream r;
std::ostringstream g;
std::ostringstream b;
std::ostringstream x;
std::ostringstream y;
std::ostringstream comp1in1;
std::ostringstream comp1in2;
std::ostringstream comp1op;
std::ostringstream comp2in1;
std::ostringstream comp2in2;
std::ostringstream comp2op;
const gchar *type = ext->get_param_optiongroup("type");
guint32 color = ext->get_param_color("color");
blur << ext->get_param_float("blur");
x << ext->get_param_float("xoffset");
y << ext->get_param_float("yoffset");
a << (color & 0xff) / 255.0F;
r << ((color >> 24) & 0xff);
g << ((color >> 16) & 0xff);
b << ((color >> 8) & 0xff);
// Select object or user-defined color
if ((g_ascii_strcasecmp("innercut", type) == 0)) {
if (ext->get_param_bool("objcolor")) {
comp2in1 << "SourceGraphic";
comp2in2 << "offset";
} else {
comp2in1 << "offset";
comp2in2 << "SourceGraphic";
}
} else {
if (ext->get_param_bool("objcolor")) {
comp1in1 << "SourceGraphic";
comp1in2 << "flood";
} else {
comp1in1 << "flood";
comp1in2 << "SourceGraphic";
}
}
// Shadow mode
if ((g_ascii_strcasecmp("outer", type) == 0)) {
comp1op << "in";
comp2op << "over";
comp2in1 << "SourceGraphic";
comp2in2 << "offset";
} else if ((g_ascii_strcasecmp("inner", type) == 0)) {
comp1op << "out";
comp2op << "atop";
comp2in1 << "offset";
comp2in2 << "SourceGraphic";
} else if ((g_ascii_strcasecmp("outercut", type) == 0)) {
comp1op << "in";
comp2op << "out";
comp2in1 << "offset";
comp2in2 << "SourceGraphic";
} else if ((g_ascii_strcasecmp("innercut", type) == 0)){
comp1op << "out";
comp1in1 << "flood";
comp1in2 << "SourceGraphic";
comp2op << "in";
} else { //shadow
comp1op << "in";
comp2op << "atop";
comp2in1 << "offset";
comp2in2 << "offset";
}
// clang-format off
_filter = g_strdup_printf(
"<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" style=\"color-interpolation-filters:sRGB;\" inkscape:label=\"Drop Shadow\">\n"
"<feFlood flood-opacity=\"%s\" flood-color=\"rgb(%s,%s,%s)\" result=\"flood\" />\n"
"<feComposite in=\"%s\" in2=\"%s\" operator=\"%s\" result=\"composite1\" />\n"
"<feGaussianBlur in=\"composite1\" stdDeviation=\"%s\" result=\"blur\" />\n"
"<feOffset dx=\"%s\" dy=\"%s\" result=\"offset\" />\n"
"<feComposite in=\"%s\" in2=\"%s\" operator=\"%s\" result=\"composite2\" />\n"
"</filter>\n", a.str().c_str(), r.str().c_str(), g.str().c_str(), b.str().c_str(),
comp1in1.str().c_str(), comp1in2.str().c_str(), comp1op.str().c_str(),
blur.str().c_str(), x.str().c_str(), y.str().c_str(),
comp2in1.str().c_str(), comp2in2.str().c_str(), comp2op.str().c_str());
// clang-format on
return _filter;
}; /* Drop shadow filter */
}; /* namespace Filter */
}; /* namespace Internal */
}; /* namespace Extension */
}; /* namespace Inkscape */
/* Change the 'SHADOWS' below to be your file name */
#endif /* SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_SHADOWS_H__ */
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