src/extension/internal/filter/drop-shadow.h

   1 #ifndef __INKSCAPE_EXTENSION_INTERNAL_FILTER_DROP_SHADOW_H__
   2 #define __INKSCAPE_EXTENSION_INTERNAL_FILTER_DROP_SHADOW_H__
   3 /* Change the 'DROP_SHADOW' 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 #include "extension/internal/clear-n_.h"
  16 #include "extension/system.h"
  17 #include "extension/extension.h"
  18
  19 namespace Inkscape {
  20 namespace Extension {
  21 namespace Internal {
  22 namespace Filter {
  23
  24 class DropShadow : public Inkscape::Extension::Internal::Filter::Filter {
  25 protected:
  26         virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
  27
  28 public:
  29         DropShadow ( ) : Filter() { };
  30         virtual ~DropShadow ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
  31
  32         static void init (void) {
  33                 Inkscape::Extension::build_from_mem(
  34                         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
  35                                 "<name>" N_("Drop Shadow") "</name>\n"
  36                                 "<id>org.inkscape.effect.filter.drop-shadow</id>\n"
  37                                 "<param name=\"blur\" gui-text=\"" N_("Blur radius, px") "\" type=\"float\" min=\"0.0\" max=\"200.0\">2.0</param>\n"
  38                                 "<param name=\"opacity\" gui-text=\"" N_("Opacity, %") "\" type=\"float\" min=\"0.0\" max=\"100.0\">50</param>\n"
  39                                 "<param name=\"xoffset\" gui-text=\"" N_("Horizontal offset, px") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">4.0</param>\n"
  40                                 "<param name=\"yoffset\" gui-text=\"" N_("Vertical offset, px") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">4.0</param>\n"
  41                                 "<effect>\n"
  42                                         "<object-type>all</object-type>\n"
  43                                         "<effects-menu>\n"
  44                                                 "<submenu name=\"" N_("Filters") "\" >\n"
  45                                                 "<submenu name=\"" N_("Shadows and Glows") "\"/>\n"
  46                               "</submenu>\n"
  47                                         "</effects-menu>\n"
  48                                         "<menu-tip>" N_("Black, blurred drop shadow") "</menu-tip>\n"
  49                                 "</effect>\n"
  50                         "</inkscape-extension>\n", new DropShadow());
  51         };
  52
  53 };
  54
  55 gchar const *
  56 DropShadow::get_filter_text (Inkscape::Extension::Extension * ext)
  57 {
  58         if (_filter != NULL) g_free((void *)_filter);
  59
  60         float blur = ext->get_param_float("blur");
  61         float opacity = ext->get_param_float("opacity") / 100;
  62         float x = ext->get_param_float("xoffset");
  63         float y = ext->get_param_float("yoffset");
  64
  65         _filter = g_strdup_printf(
  66                 "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" inkscape:label=\"Drop shadow\" width=\"1.5\" height=\"1.5\" x=\"-.25\" y=\"-.25\">\n"
  67                         "<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"%f\" result=\"blur\"/>\n"
  68                         "<feColorMatrix result=\"bluralpha\" type=\"matrix\" values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 %f 0 \" />\n"
  69                         "<feOffset in=\"bluralpha\" dx=\"%f\" dy=\"%f\" result=\"offsetBlur\"/>\n"
  70                         "<feMerge>\n"
  71                                 "<feMergeNode in=\"offsetBlur\"/>\n"
  72                                 "<feMergeNode in=\"SourceGraphic\"/>\n"
  73                         "</feMerge>\n"
  74                 "</filter>\n", blur, opacity, x, y);
  75
  76         return _filter;
  77 };
  78
  79 class DropGlow : public Inkscape::Extension::Internal::Filter::Filter {
  80 protected:
  81         virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
  82
  83 public:
  84         DropGlow ( ) : Filter() { };
  85         virtual ~DropGlow ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
  86
  87         static void init (void) {
  88                 Inkscape::Extension::build_from_mem(
  89                         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
  90                                 "<name>" N_("Drop Glow") "</name>\n"
  91                                 "<id>org.inkscape.effect.filter.drop-glow</id>\n"
  92                                 "<param name=\"blur\" gui-text=\"" N_("Blur radius, px") "\" type=\"float\" min=\"0.0\" max=\"200.0\">2.0</param>\n"
  93                                 "<param name=\"opacity\" gui-text=\"" N_("Opacity, %") "\" type=\"float\" min=\"0.0\" max=\"100.0\">50</param>\n"
  94                                 "<param name=\"xoffset\" gui-text=\"" N_("Horizontal offset, px") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">4.0</param>\n"
  95                                 "<param name=\"yoffset\" gui-text=\"" N_("Vertical offset, px") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">4.0</param>\n"
  96                                 "<effect>\n"
  97                                         "<object-type>all</object-type>\n"
  98                                         "<effects-menu>\n"
  99                                                 "<submenu name=\"" N_("Filters") "\">\n"
 100                                                 "<submenu name=\"" N_("Shadows and Glows") "\"/>\n"
 101                               "</submenu>\n"
 102                                         "</effects-menu>\n"
 103                                         "<menu-tip>" N_("White, blurred drop glow") "</menu-tip>\n"
 104                                 "</effect>\n"
 105                         "</inkscape-extension>\n", new DropGlow());
 106         };
 107
 108 };
 109
 110 gchar const *
 111 DropGlow::get_filter_text (Inkscape::Extension::Extension * ext)
 112 {
 113         if (_filter != NULL) g_free((void *)_filter);
 114
 115         float blur = ext->get_param_float("blur");
 116         float opacity = ext->get_param_float("opacity") / 100;
 117         float x = ext->get_param_float("xoffset");
 118         float y = ext->get_param_float("yoffset");
 119
 120         _filter = g_strdup_printf(
 121                 "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" inkscape:label=\"Drop shadow\" width=\"1.5\" height=\"1.5\" x=\"-.25\" y=\"-.25\">\n"
 122                         "<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"%f\" result=\"blur\"/>\n"
 123                         "<feColorMatrix result=\"bluralpha\" type=\"matrix\" values=\"-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 %f 0 \" />\n"
 124                         "<feOffset in=\"bluralpha\" dx=\"%f\" dy=\"%f\" result=\"offsetBlur\"/>\n"
 125                         "<feMerge>\n"
 126                                 "<feMergeNode in=\"offsetBlur\"/>\n"
 127                                 "<feMergeNode in=\"SourceGraphic\"/>\n"
 128                         "</feMerge>\n"
 129                 "</filter>\n", blur, opacity, x, y);
 130
 131         return _filter;
 132 };
 133
 134 }; /* namespace Filter */
 135 }; /* namespace Internal */
 136 }; /* namespace Extension */
 137 }; /* namespace Inkscape */
 138
 139 /* Change the 'DROP_SHADOW' below to be your file name */
 140 #endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_DROP_SHADOW_H__ */