1 #ifndef __INKSCAPE_EXTENSION_INTERNAL_FILTER_EXPERIMENTAL_H__
2 #define __INKSCAPE_EXTENSION_INTERNAL_FILTER_EXPERIMENTAL_H__
3 /* Change the 'EXPERIMENTAL' above to be your file name */
5 /*
6 * Copyright (C) 2010 Authors:
7 * Ivan Louette (filters)
8 * Nicolas Dufour (UI) <nicoduf@yahoo.fr>
9 *
10 * Released under GNU GPL, read the file 'COPYING' for more information
11 */
12 /* ^^^ Change the copyright to be you and your e-mail address ^^^ */
14 #include "filter.h"
16 #include "extension/internal/clear-n_.h"
17 #include "extension/system.h"
18 #include "extension/extension.h"
20 namespace Inkscape {
21 namespace Extension {
22 namespace Internal {
23 namespace Filter {
25 class Posterize : public Inkscape::Extension::Internal::Filter::Filter {
26 protected:
27 virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
29 public:
30 Posterize ( ) : Filter() { };
31 virtual ~Posterize ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
33 static void init (void) {
34 Inkscape::Extension::build_from_mem(
35 "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
36 "<name>" N_("Posterize, custom -EXP-") "</name>\n"
37 "<id>org.inkscape.effect.filter.Posterize</id>\n"
38 "<param name=\"type\" gui-text=\"" N_("Type:") "\" type=\"enum\">\n"
39 "<_item value=\"normal\">Normal</_item>\n"
40 "<_item value=\"contrasted\">Contrasted</_item>\n"
41 "</param>\n"
42 "<param name=\"level\" gui-text=\"" N_("Level:") "\" type=\"int\" min=\"1\" max=\"10\">3</param>\n"
43 "<effect>\n"
44 "<object-type>all</object-type>\n"
45 "<effects-menu>\n"
46 "<submenu name=\"" N_("Filters") "\">\n"
47 "<submenu name=\"" N_("Experimental") "\"/>\n"
48 "</submenu>\n"
49 "</effects-menu>\n"
50 "<menu-tip>" N_("Change colors to a two colors palette") "</menu-tip>\n"
51 "</effect>\n"
52 "</inkscape-extension>\n", new Posterize());
53 };
55 };
57 gchar const *
58 Posterize::get_filter_text (Inkscape::Extension::Extension * ext)
59 {
60 if (_filter != NULL) g_free((void *)_filter);
62 std::ostringstream transf;
64 int level = ext->get_param_int("level") + 1;
65 const gchar *type = ext->get_param_enum("type");
66 float val = 0.0;
67 transf << "0";
68 for ( int step = 1 ; step <= level ; step++ ) {
69 val = (float) step / level;
70 transf << " " << val;
71 if((g_ascii_strcasecmp("contrasted", type) == 0)) {
72 transf << " " << (val - ((float) 1 / (3 * level))) << " " << (val + ((float) 1 / (2 * level)));
73 }
74 }
75 transf << " 1";
77 _filter = g_strdup_printf(
78 "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Posterize, custom -EXP-\">\n"
79 "<feGaussianBlur stdDeviation=\"1.5\" result=\"result3\" />\n"
80 "<feGaussianBlur stdDeviation=\"1.5\" in=\"SourceGraphic\" result=\"result4\" />\n"
81 "<feBlend in2=\"result3\" blend=\"normal\" mode=\"lighten\" />\n"
82 "<feComponentTransfer result=\"result1\">\n"
83 "<feFuncR type=\"discrete\" tableValues=\"%s\" />\n"
84 "<feFuncG type=\"discrete\" tableValues=\"%s\" />\n"
85 "<feFuncB type=\"discrete\" tableValues=\"%s\" />\n"
86 "</feComponentTransfer>\n"
87 "<feColorMatrix type=\"saturate\" values=\"1\" />\n"
88 "<feGaussianBlur stdDeviation=\"0.01\" />\n"
89 "<feComposite in2=\"SourceGraphic\" operator=\"atop\" result=\"result2\" />\n"
90 "</filter>\n", transf.str().c_str(), transf.str().c_str(), transf.str().c_str());
92 return _filter;
93 };
94 }; /* namespace Filter */
95 }; /* namespace Internal */
96 }; /* namespace Extension */
97 }; /* namespace Inkscape */
99 /* Change the 'COLOR' below to be your file name */
100 #endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_EXPERIMENTAL_H__ */