src/extension/internal/filter/snow.h

   1 #ifndef __INKSCAPE_EXTENSION_INTERNAL_FILTER_SNOW_H__
   2 #define __INKSCAPE_EXTENSION_INTERNAL_FILTER_SNOW_H__
   3 /* Change the 'SNOW' above to be your file name */
   4
   5 /*
   6  * Copyright (C) 2008 Authors:
   7  *   Ted Gould <ted@gould.cx>
   8  *
   9  * Released under GNU GPL, read the file 'COPYING' for more information
  10  */
  11 /* ^^^ Change the copyright to be you and your e-mail address ^^^ */
  12
  13 #include "filter.h"
  14
  15 namespace Inkscape {
  16 namespace Extension {
  17 namespace Internal {
  18 namespace Filter {
  19
  20 class Snow : public Inkscape::Extension::Internal::Filter::Filter {
  21 protected:
  22         virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
  23
  24 public:
  25         Snow ( ) : Filter() { };
  26         virtual ~Snow ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
  27
  28 public:
  29         static void init (void) {
  30                 Inkscape::Extension::build_from_mem(
  31                         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
  32                                 "<name>" N_("Snow") "</name>\n"
  33                                 "<id>org.inkscape.effect.filter.snow</id>\n"
  34                                 "<param name=\"drift\" gui-text=\"" N_("Drift Size") "\" type=\"float\" min=\"0.0\" max=\"20.0\">3.5</param>\n"
  35                                 "<effect>\n"
  36                                         "<object-type>all</object-type>\n"
  37                                         "<effects-menu>\n"
  38                                                 "<submenu name=\"" N_("Filters") "\">\n"
  39                                                 "<submenu name=\"Shadows and Glows\"/>\n"
  40                               "</submenu>\n"
  41                                         "</effects-menu>\n"
  42                                         "<menu-tip>" N_("Snow has fallen on object") "</menu-tip>\n"
  43                                 "</effect>\n"
  44                         "</inkscape-extension>\n", new Snow());
  45         };
  46
  47 };
  48
  49 gchar const *
  50 Snow::get_filter_text (Inkscape::Extension::Extension * ext)
  51 {
  52         if (_filter != NULL) g_free((void *)_filter);
  53
  54         float drift = ext->get_param_float("drift");
  55
  56         _filter = g_strdup_printf(
  57                                 "<filter>\n"
  58                                         "<feConvolveMatrix order=\"3 3\" kernelMatrix=\"1 1 1 0 0 0 -1 -1 -1\" preserveAlpha=\"false\" divisor=\"3\"/>\n"
  59                                         "<feMorphology operator=\"dilate\" radius=\"1 %f\"/>\n"
  60                                         "<feGaussianBlur stdDeviation=\"1.6270889487870621\" result=\"result0\"/>\n"
  61                                         "<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"
  62                                         "<feOffset dx=\"0\" dy=\"1\" result=\"result5\"/>\n"
  63                                         "<feDiffuseLighting in=\"result0\" diffuseConstant=\"2.2613065326633168\" surfaceScale=\"1\">\n"
  64                                           "<feDistantLight azimuth=\"225\" elevation=\"32\"/>\n"
  65                                         "</feDiffuseLighting>\n"
  66                                         "<feComposite in2=\"result1\" operator=\"in\" result=\"result2\"/>\n"
  67                                         "<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"
  68                                         "<feComposite in2=\"result5\" in=\"result4\"/>\n"
  69                                         "<feComposite in2=\"SourceGraphic\"/>\n"
  70                                 "</filter>\n", drift);
  71
  72         return _filter;
  73 };
  74
  75 }; /* namespace Filter */
  76 }; /* namespace Internal */
  77 }; /* namespace Extension */
  78 }; /* namespace Inkscape */
  79
  80 /* Change the 'SNOW' below to be your file name */
  81 #endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_SNOW_H__ */