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         std::ostringstream blur;
  61         std::ostringstream opacity;
  62         std::ostringstream x;
  63         std::ostringstream y;
  64
  65         blur << ext->get_param_float("blur");
  66         opacity << ext->get_param_float("opacity") / 100;
  67         x << ext->get_param_float("xoffset");
  68         y << ext->get_param_float("yoffset");
  69
  70         _filter = g_strdup_printf(
  71                 "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" inkscape:label=\"Drop shadow\" width=\"1.5\" height=\"1.5\" x=\"-.25\" y=\"-.25\">\n"
  72                         "<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"%s\" result=\"blur\"/>\n"
  73                         "<feColorMatrix result=\"bluralpha\" type=\"matrix\" values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 %s 0 \" />\n"
  74                         "<feOffset in=\"bluralpha\" dx=\"%s\" dy=\"%s\" result=\"offsetBlur\"/>\n"
  75                         "<feMerge>\n"
  76                                 "<feMergeNode in=\"offsetBlur\"/>\n"
  77                                 "<feMergeNode in=\"SourceGraphic\"/>\n"
  78                         "</feMerge>\n"
  79                 "</filter>\n", blur.str().c_str(), opacity.str().c_str(), x.str().c_str(), y.str().c_str());
  80
  81         return _filter;
  82 };
  83
  84 class DropGlow : public Inkscape::Extension::Internal::Filter::Filter {
  85 protected:
  86         virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
  87
  88 public:
  89         DropGlow ( ) : Filter() { };
  90         virtual ~DropGlow ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
  91
  92         static void init (void) {
  93                 Inkscape::Extension::build_from_mem(
  94                         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
  95                                 "<name>" N_("Drop Glow") "</name>\n"
  96                                 "<id>org.inkscape.effect.filter.drop-glow</id>\n"
  97                                 "<param name=\"blur\" gui-text=\"" N_("Blur radius (px):") "\" type=\"float\" min=\"0.0\" max=\"200.0\">2.0</param>\n"
  98                                 "<param name=\"opacity\" gui-text=\"" N_("Opacity (%):") "\" type=\"float\" min=\"0.0\" max=\"100.0\">50</param>\n"
  99                                 "<param name=\"xoffset\" gui-text=\"" N_("Horizontal offset (px):") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">4.0</param>\n"
 100                                 "<param name=\"yoffset\" gui-text=\"" N_("Vertical offset (px):") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">4.0</param>\n"
 101                                 "<effect>\n"
 102                                         "<object-type>all</object-type>\n"
 103                                         "<effects-menu>\n"
 104                                                 "<submenu name=\"" N_("Filters") "\">\n"
 105                                                 "<submenu name=\"" N_("Shadows and Glows") "\"/>\n"
 106                               "</submenu>\n"
 107                                         "</effects-menu>\n"
 108                                         "<menu-tip>" N_("White, blurred drop glow") "</menu-tip>\n"
 109                                 "</effect>\n"
 110                         "</inkscape-extension>\n", new DropGlow());
 111         };
 112
 113 };
 114
 115 gchar const *
 116 DropGlow::get_filter_text (Inkscape::Extension::Extension * ext)
 117 {
 118         if (_filter != NULL) g_free((void *)_filter);
 119
 120         std::ostringstream blur;
 121         std::ostringstream opacity;
 122         std::ostringstream x;
 123         std::ostringstream y;
 124
 125         blur << ext->get_param_float("blur");
 126         opacity << ext->get_param_float("opacity") / 100;
 127         x << ext->get_param_float("xoffset");
 128         y << ext->get_param_float("yoffset");
 129
 130         _filter = g_strdup_printf(
 131                 "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" inkscape:label=\"Drop shadow\" width=\"1.5\" height=\"1.5\" x=\"-.25\" y=\"-.25\">\n"
 132                         "<feGaussianBlur in=\"SourceAlpha\" stdDeviation=\"%s\" result=\"blur\"/>\n"
 133                         "<feColorMatrix result=\"bluralpha\" type=\"matrix\" values=\"-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 %s 0 \" />\n"
 134                         "<feOffset in=\"bluralpha\" dx=\"%s\" dy=\"%s\" result=\"offsetBlur\"/>\n"
 135                         "<feMerge>\n"
 136                                 "<feMergeNode in=\"offsetBlur\"/>\n"
 137                                 "<feMergeNode in=\"SourceGraphic\"/>\n"
 138                         "</feMerge>\n"
 139                 "</filter>\n", blur.str().c_str(), opacity.str().c_str(), x.str().c_str(), y.str().c_str());
 140
 141         return _filter;
 142 };
 143
 144 class ColorizableDropShadow : public Inkscape::Extension::Internal::Filter::Filter {
 145 protected:
 146         virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
 147
 148 public:
 149         ColorizableDropShadow ( ) : Filter() { };
 150         virtual ~ColorizableDropShadow ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
 151
 152         static void init (void) {
 153                 Inkscape::Extension::build_from_mem(
 154                         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
 155                                 "<name>" N_("Drop shadow, color") "</name>\n"
 156                                 "<id>org.inkscape.effect.filter.colorizable-drop-shadow</id>\n"
 157                                 "<param name=\"blur\" gui-text=\"" N_("Blur radius (px):") "\" type=\"float\" min=\"0.0\" max=\"200.0\">3.0</param>\n"
 158                                 "<param name=\"xoffset\" gui-text=\"" N_("Horizontal offset (px):") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
 159                                 "<param name=\"yoffset\" gui-text=\"" N_("Vertical offset (px):") "\" type=\"float\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
 160                                 "<param name=\"color\" gui-text=\"" N_("Color") "\" type=\"color\">127</param>\n"
 161                                 "<effect>\n"
 162                                         "<object-type>all</object-type>\n"
 163                                         "<effects-menu>\n"
 164                                                 "<submenu name=\"" N_("Filters") "\">\n"
 165                                                 "<submenu name=\"" N_("Experimental") "\"/>\n"
 166                               "</submenu>\n"
 167                                         "</effects-menu>\n"
 168                                         "<menu-tip>" N_("Colorizable Drop shadow") "</menu-tip>\n"
 169                                 "</effect>\n"
 170                         "</inkscape-extension>\n", new ColorizableDropShadow());
 171         };
 172
 173 };
 174
 175 gchar const *
 176 ColorizableDropShadow::get_filter_text (Inkscape::Extension::Extension * ext)
 177 {
 178         if (_filter != NULL) g_free((void *)_filter);
 179
 180     std::ostringstream blur;
 181     std::ostringstream a;
 182     std::ostringstream r;
 183     std::ostringstream g;
 184     std::ostringstream b;
 185     std::ostringstream x;
 186     std::ostringstream y;
 187
 188     guint32 color = ext->get_param_color("color");
 189
 190     blur << ext->get_param_float("blur");
 191     x << ext->get_param_float("xoffset");
 192     y << ext->get_param_float("yoffset");
 193     a << (color & 0xff) / 255.0F;
 194     r << ((color >> 24) & 0xff);
 195     g << ((color >> 16) & 0xff);
 196     b << ((color >>  8) & 0xff);
 197
 198         _filter = g_strdup_printf(
 199                 "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1.2\" width=\"1.2\" y=\"-0.1\" x=\"-0.1\" inkscape:label=\"Drop shadow, color\">\n"
 200                         "<feFlood flood-opacity=\"%s\" result=\"flood\" flood-color=\"rgb(%s,%s,%s)\" />\n"
 201                         "<feComposite in2=\"SourceGraphic\" in=\"flood\" result=\"composite\" operator=\"in\" />\n"
 202                         "<feGaussianBlur result=\"blur\" stdDeviation=\"%s\" in=\"composite\" />\n"
 203                         "<feOffset result=\"offsetBlur\" dx=\"%s\" dy=\"%s\" />\n"
 204                 "<feComposite in2=\"offsetBlur\" in=\"SourceGraphic\" operator=\"over\" result=\"compositeBlur\" />\n"
 205                 "</filter>\n", a.str().c_str(), r.str().c_str(), g.str().c_str(), b.str().c_str(), blur.str().c_str(), x.str().c_str(), y.str().c_str());
 206
 207         return _filter;
 208 };
 209 }; /* namespace Filter */
 210 }; /* namespace Internal */
 211 }; /* namespace Extension */
 212 }; /* namespace Inkscape */
 213
 214 /* Change the 'DROP_SHADOW' below to be your file name */
 215 #endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_DROP_SHADOW_H__ */