Filters. New custom predefined cross-smooth filter (very experimental...).

[inkscape.git] / src / extension / internal / filter / morphology.h

diff --git a/src/extension/internal/filter/morphology.h b/src/extension/internal/filter/morphology.h
new file mode 100644 (file)
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+++ b/src/extension/internal/filter/morphology.h
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+#ifndef __INKSCAPE_EXTENSION_INTERNAL_FILTER_MORPHOLOGY_H__
+#define __INKSCAPE_EXTENSION_INTERNAL_FILTER_MORPHOLOGY_H__
+/* Change the 'MORPHOLOGY' above to be your file name */
+
+/*
+ * Copyright (C) 2010 Authors:
+ *   Ivan Louette (filters)
+ *   Nicolas Dufour (UI) <nicoduf@yahoo.fr>
+ *
+ * Released under GNU GPL, 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 Crosssmooth filter.
+    
+    Smooth the outside of shapes and pictures.
+
+    Filter's parameters:
+    * Type (enum, default "Smooth all") ->
+        Smooth all = composite (in="colormatrix", in2="colormatrix")
+        Smooth edges = composite (in="SourceGraphic", in2="colormatrix")
+    * Blur (0.01->10., default 5.) -> blur (stdDeviation)
+    * Spreading (1->100, default 20) -> colormatrix (value n-1)
+    * Erosion (0->-100, default -15) -> colormatrix (value n)
+*/
+
+class Crosssmooth : public Inkscape::Extension::Internal::Filter::Filter {
+protected:
+       virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
+
+public:
+       Crosssmooth ( ) : Filter() { };
+       virtual ~Crosssmooth ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
+
+       static void init (void) {
+               Inkscape::Extension::build_from_mem(
+                       "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
+                               "<name>" N_("Cross-smooth, custom -EXP-") "</name>\n"
+                               "<id>org.inkscape.effect.filter.Crosssmooth</id>\n"
+                        "<param name=\"type\" gui-text=\"" N_("Type:") "\" type=\"enum\">\n"
+                            "<_item value=\"all\">Smooth all</_item>\n"
+                            "<_item value=\"edges\">Smooth edges</_item>\n"
+                        "</param>\n"
+                        "<param name=\"blur\" gui-text=\"" N_("Blur:") "\" type=\"float\" min=\"0.01\" max=\"10\">5</param>\n"
+                        "<param name=\"spreading\" gui-text=\"" N_("Spreading:") "\" type=\"int\" min=\"1\" max=\"100\">20</param>\n"
+                        "<param name=\"erosion\" gui-text=\"" N_("Erosion:") "\" type=\"int\" min=\"-100\" max=\"0\">-15</param>\n"
+                               "<effect>\n"
+                                       "<object-type>all</object-type>\n"
+                                       "<effects-menu>\n"
+                                               "<submenu name=\"" N_("Filters") "\">\n"
+                                               "<submenu name=\"" N_("Experimental") "\"/>\n"
+                             "</submenu>\n"
+                                       "</effects-menu>\n"
+                                       "<menu-tip>" N_("Smooth the outside of shapes and pictures without altering their contents") "</menu-tip>\n"
+                               "</effect>\n"
+                       "</inkscape-extension>\n", new Crosssmooth());
+       };
+
+};
+
+gchar const *
+Crosssmooth::get_filter_text (Inkscape::Extension::Extension * ext)
+{
+       if (_filter != NULL) g_free((void *)_filter);
+
+    std::ostringstream blur;
+    std::ostringstream spreading;
+    std::ostringstream erosion;
+    std::ostringstream cin;
+
+    blur << ext->get_param_float("blur");
+    spreading << ext->get_param_int("spreading");
+    erosion << ext->get_param_int("erosion");
+
+    const gchar *type = ext->get_param_enum("type");
+    if((g_ascii_strcasecmp("all", type) == 0)) {
+        cin << "colormatrix";
+    } else {
+        cin << "SourceGraphic";
+    }
+    
+       _filter = g_strdup_printf(
+               "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Cross-smooth, custom -EXP-\">\n"
+        "<feGaussianBlur stdDeviation=\"%s\" result=\"blur\" />\n"
+        "<feColorMatrix in=\"blur\" values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 %s %s \" result=\"colormatrix\" />\n"
+        "<feComposite in=\"%s\" in2=\"colormatrix\" operator=\"in\" />\n"
+        "</filter>\n", blur.str().c_str(), spreading.str().c_str(), erosion.str().c_str(), cin.str().c_str());
+
+       return _filter;
+}; /* Crosssmooth filter */
+
+}; /* namespace Filter */
+}; /* namespace Internal */
+}; /* namespace Extension */
+}; /* namespace Inkscape */
+
+/* Change the 'COLOR' below to be your file name */
+#endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_MORPHOLOGY_H__ */