textures.h

Go to the documentation of this file.

// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_TEXTURES_H__
#define SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_TEXTURES_H__
/* Change the 'TEXTURES' above to be your file name */
 
/*
 * Copyright (C) 2011 Authors:
 *   Ivan Louette (filters)
 *   Nicolas Dufour (UI) <nicoduf@yahoo.fr>
 *
 * Protrusion filters
 *   Ink blot
 *
 * 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 {
 
 
class InkBlot : public Inkscape::Extension::Internal::Filter::Filter {
protected:
    gchar const * get_filter_text (Inkscape::Extension::Extension * ext) override;
 
public:
    InkBlot ( ) : Filter() { };
    ~InkBlot ( ) 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_("Ink Blot") "</name>\n"
              "<id>org.inkscape.effect.filter.InkBlot</id>\n"
              "<param name=\"type\" gui-text=\"" N_("Turbulence type:") "\" type=\"optiongroup\" appearance=\"combo\">\n"
                "<option value=\"fractalNoise\">Fractal noise</option>\n"
                "<option value=\"turbulence\">Turbulence</option>\n"
              "</param>\n"
              "<param name=\"freq\" gui-text=\"" N_("Frequency:") "\" type=\"float\" appearance=\"full\" precision=\"2\" min=\"0.01\" max=\"100.00\">4</param>\n"
              "<param name=\"complexity\" gui-text=\"" N_("Complexity:") "\" type=\"int\" appearance=\"full\" min=\"1\" max=\"5\">3</param>\n"
              "<param name=\"variation\" gui-text=\"" N_("Variation:") "\" type=\"int\" appearance=\"full\" min=\"0\" max=\"100\">0</param>\n"
              "<param name=\"hblur\" gui-text=\"" N_("Horizontal inlay:") "\" type=\"float\" appearance=\"full\" precision=\"2\" min=\"0.01\" max=\"30.00\">10</param>\n"
              "<param name=\"vblur\" gui-text=\"" N_("Vertical inlay:") "\" type=\"float\" appearance=\"full\" precision=\"2\" min=\"0.01\" max=\"30.00\">10</param>\n"
              "<param name=\"displacement\" gui-text=\"" N_("Displacement:") "\" type=\"float\" appearance=\"full\" precision=\"2\" min=\"0.\" max=\"100.00\">50</param>\n"
              "<param name=\"blend\" gui-text=\"" N_("Blend:") "\" type=\"float\" appearance=\"full\" precision=\"2\" min=\"0.01\" max=\"30.00\">5</param>\n"
              "<param name=\"stroke\" gui-text=\"" N_("Stroke:") "\" type=\"optiongroup\" appearance=\"combo\">\n"
                "<option value=\"over\">" N_("Wide") "</option>\n"
                "<option value=\"atop\">" N_("Normal") "</option>\n"
                "<option value=\"in\">" N_("Narrow") "</option>\n"
                "<option value=\"xor\">" N_("Overlapping") "</option>\n"
                "<option value=\"out\">" N_("External") "</option>\n"
                "<option value=\"arithmetic\">" N_("Custom") "</option>\n"
              "</param>\n"
              "<label appearance=\"header\">" N_("Custom stroke options") "</label>\n"
                "<param name=\"k1\" gui-text=\"" N_("k1:") "\" type=\"float\" indent=\"1\" appearance=\"full\" precision=\"2\" min=\"-10.\" max=\"10.\">1.5</param>\n"
                "<param name=\"k2\" gui-text=\"" N_("k2:") "\" type=\"float\" indent=\"1\" appearance=\"full\" precision=\"2\" min=\"-10.\" max=\"10.\">-0.25</param>\n"
                "<param name=\"k3\" gui-text=\"" N_("k3:") "\" type=\"float\" indent=\"1\" appearance=\"full\" precision=\"2\" min=\"-10.\" max=\"10.\">0.5</param>\n"
              "<effect>\n"
                "<object-type>all</object-type>\n"
                "<effects-menu>\n"
                  "<submenu name=\"" N_("Filters") "\">\n"
                     "<submenu name=\"Textures\"/>\n"
                  "</submenu>\n"
                "</effects-menu>\n"
                "<menu-tip>" N_("Inkblot on tissue or rough paper") "</menu-tip>\n"
              "</effect>\n"
            "</inkscape-extension>\n", std::make_unique<InkBlot>());
        // clang-format on
    };
 
};
 
gchar const *
InkBlot::get_filter_text (Inkscape::Extension::Extension * ext)
{
    if (_filter != nullptr) g_free((void *)_filter);
 
    std::ostringstream type;
    std::ostringstream freq;
    std::ostringstream complexity;
    std::ostringstream variation;
    std::ostringstream hblur;
    std::ostringstream vblur;
    std::ostringstream displacement;
    std::ostringstream blend;
    std::ostringstream stroke;
    std::ostringstream custom;
 
    type << ext->get_param_optiongroup("type");
    freq << ext->get_param_float("freq") / 100;
    complexity << ext->get_param_int("complexity");
    variation << ext->get_param_int("variation");
    hblur << ext->get_param_float("hblur");
    vblur << ext->get_param_float("vblur");
    displacement << ext->get_param_float("displacement");
    blend << ext->get_param_float("blend");
 
    const gchar *ope = ext->get_param_optiongroup("stroke");
    if (g_ascii_strcasecmp("arithmetic", ope) == 0) {
        custom << "k1=\"" << ext->get_param_float("k1") << "\" k2=\"" << ext->get_param_float("k2") << "\" k3=\"" << ext->get_param_float("k3") << "\"";
    } else {
        custom << "";
    }
 
    stroke << ext->get_param_optiongroup("stroke");
 
    // clang-format off
    _filter = g_strdup_printf(
        "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" style=\"color-interpolation-filters:sRGB;\" x=\"-0.15\" width=\"1.3\" y=\"-0.15\" height=\"1.3\" inkscape:label=\"Ink Blot\" >\n"
          "<feGaussianBlur in=\"SourceGraphic\" stdDeviation=\"%s %s\" result=\"blur1\" />\n"
          "<feTurbulence type=\"%s\" baseFrequency=\"%s\" numOctaves=\"%s\" seed=\"%s\" result=\"turbulence\" />\n"
          "<feDisplacementMap in=\"blur1\" in2=\"turbulence\" xChannelSelector=\"R\" yChannelSelector=\"G\" scale=\"%s\" result=\"map\" />\n"
          "<feGaussianBlur in=\"map\" stdDeviation=\"%s\" result=\"blur2\" />\n"
          "<feComposite in=\"blur2\" in2=\"map\" %s operator=\"%s\" result=\"composite\" />\n"
        "</filter>\n", hblur.str().c_str(), vblur.str().c_str(), type.str().c_str(),
                       freq.str().c_str(), complexity.str().c_str(), variation.str().c_str(),
                       displacement.str().c_str(), blend.str().c_str(),
                       custom.str().c_str(), stroke.str().c_str() );
    // clang-format on
 
    return _filter;
 
}; /* Ink Blot filter */
 
 
}; /* namespace Filter */
}; /* namespace Internal */
}; /* namespace Extension */
}; /* namespace Inkscape */
 
/* Change the 'TEXTURES' below to be your file name */
#endif /* SEEN_INKSCAPE_EXTENSION_INTERNAL_FILTER_TEXTURES_H__ */