Filters. New Edge detect custom filter and new options for the Drop shadow filter.

(bzr r10388)

3 files changed, 189 insertions, 20 deletions

diff --git a/src/extension/internal/filter/filter-all.cpp b/src/extension/internal/filter/filter-all.cpp
index 280dc9563..6ee849925 100755
--- a/src/extension/internal/filter/filter-all.cpp
+++ b/src/extension/internal/filter/filter-all.cpp
@@ -11,6 +11,7 @@
 #include "abc.h"
 #include "color.h"
 #include "drop-shadow.h"
+#include "image.h"
 #include "morphology.h"
 #include "shadows.h"
 #include "snow.h"
@@ -57,6 +58,9 @@ Filter::filters_all (void )
     Solarize::init();
     Tritone::init();
 
+    // Image
+    EdgeDetect::init();
+
     // Morphology
     Crosssmooth::init();
 
diff --git a/src/extension/internal/filter/image.h b/src/extension/internal/filter/image.h
new file mode 100644
index 000000000..480e836bd
--- /dev/null
+++ b/src/extension/internal/filter/image.h
@@ -0,0 +1,113 @@
+#ifndef __INKSCAPE_EXTENSION_INTERNAL_FILTER_IMAGE_H__
+#define __INKSCAPE_EXTENSION_INTERNAL_FILTER_IMAGE_H__
+/* Change the 'IMAGE' above to be your file name */
+
+/*
+ * Copyright (C) 2011 Authors:
+ *   Ivan Louette (filters)
+ *   Nicolas Dufour (UI) <nicoduf@yahoo.fr>
+ *
+ * Image filters
+ *   Edge detect
+ *
+ * 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 Edge detect filter.
+    
+    Detect color edges in object.
+
+    Filter's parameters:
+    * Detection type (enum, default Full) -> convolve (kernelMatrix)
+    * Level (0.01->10., default 1.) -> convolve (divisor)
+    * Inverted (boolean, default false) -> convolve (bias)
+*/
+class EdgeDetect : public Inkscape::Extension::Internal::Filter::Filter {
+protected:
+    virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
+
+public:
+    EdgeDetect ( ) : Filter() { };
+    virtual ~EdgeDetect ( ) { 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_("Edge detect, custom (Image)") "</name>\n"
+              "<id>org.inkscape.effect.filter.EdgeDetect</id>\n"
+              "<param name=\"type\" gui-text=\"" N_("Detect:") "\" type=\"enum\" >\n"
+                "<_item value=\"all\">All</_item>\n"
+                "<_item value=\"vertical\">Vertical lines</_item>\n"
+                "<_item value=\"horizontal\">Horizontal lines</_item>\n"
+              "</param>\n"
+              "<param name=\"level\" gui-text=\"" N_("Level:") "\" type=\"float\" appearance=\"full\" min=\"0.01\" max=\"10.0\">1.0</param>\n"
+              "<param name=\"inverted\" gui-text=\"" N_("Invert colors") "\" type=\"boolean\" >false</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_("Detect color edges in object") "</menu-tip>\n"
+              "</effect>\n"
+            "</inkscape-extension>\n", new EdgeDetect());
+    };
+
+};
+
+gchar const *
+EdgeDetect::get_filter_text (Inkscape::Extension::Extension * ext)
+{
+    if (_filter != NULL) g_free((void *)_filter);
+
+    std::ostringstream matrix;
+    std::ostringstream inverted;
+    std::ostringstream level;
+    
+    const gchar *type = ext->get_param_enum("type");
+
+    level << ext->get_param_float("level");
+    
+    if ((g_ascii_strcasecmp("vertical", type) == 0)) {
+        matrix << "0 0 0 1 -2 1 0 0 0";
+    } else if ((g_ascii_strcasecmp("horizontal", type) == 0)) {
+        matrix << "0 1 0 0 -2 0 0 1 0";
+    } else {
+        matrix << "1 1 1 1 -8 1 1 1 1";
+    }
+    
+    if (ext->get_param_bool("inverted")) {
+        inverted << "1";
+    } else {
+        inverted << "0";
+    }
+    
+    _filter = g_strdup_printf(
+        "<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=\"Edge detect, custom\">\n"
+          "<feConvolveMatrix in=\"SourceGraphic\" kernelMatrix=\"%s\" order=\"3 3\" bias=\"%s\" divisor=\"%s\" targetX=\"1\" targetY=\"1\" preserveAlpha=\"true\" result=\"convolve\" />\n"
+        "</filter>\n", matrix.str().c_str(), inverted.str().c_str(), level.str().c_str());
+
+    return _filter;
+};
+
+}; /* namespace Filter */
+}; /* namespace Internal */
+}; /* namespace Extension */
+}; /* namespace Inkscape */
+
+/* Change the 'IMAGE' below to be your file name */
+#endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_IMAGE_H__ */
diff --git a/src/extension/internal/filter/shadows.h b/src/extension/internal/filter/shadows.h
index e29092ae9..e775d8398 100644
--- a/src/extension/internal/filter/shadows.h
+++ b/src/extension/internal/filter/shadows.h
@@ -7,7 +7,7 @@
  *   Ivan Louette (filters)
  *   Nicolas Dufour (UI) <nicoduf@yahoo.fr>
  *
- * Color filters
+ * Shadow filters
  *   Drop shadow
  *
  * Released under GNU GPL, read the file 'COPYING' for more information
@@ -34,7 +34,12 @@ namespace Filter {
     * Blur radius (0.->200., default 3) -> blur (stdDeviation)
     * Horizontal offset (-50.->50., default 6.0) -> offset (dx)
     * Vertical offset (-50.->50., default 6.0) -> offset (dy)
+    * Blur type (enum, default outer) ->
+        outer = composite1 (operator="in"), composite2 (operator="over", in1="SourceGraphic", in2="offset")
+        inner = composite1 (operator="out"), composite2 (operator="atop", in1="offset", in2="SourceGraphic")
+        cutout = composite1 (operator="in"), composite2 (operator="out", in1="offset", in2="SourceGraphic")
     * Color (guint, default 0,0,0,127) -> flood (flood-opacity, flood-color)
+    * Use object's color (boolean, default false) -> composite1 (in1, in2)
 */
 class ColorizableDropShadow : public Inkscape::Extension::Internal::Filter::Filter {
 protected:
@@ -47,21 +52,33 @@ public:
     static void init (void) {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
-                "<name>" N_("Drop shadow, custom (Shadows and Glows)") "</name>\n"
-                "<id>org.inkscape.effect.filter.ColorDropShadow</id>\n"
-                "<param name=\"blur\" gui-text=\"" N_("Blur radius (px):") "\" type=\"float\" appearance=\"full\" min=\"0.0\" max=\"200.0\">3.0</param>\n"
-                "<param name=\"xoffset\" gui-text=\"" N_("Horizontal offset (px):") "\" type=\"float\" appearance=\"full\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
-                "<param name=\"yoffset\" gui-text=\"" N_("Vertical offset (px):") "\" type=\"float\" appearance=\"full\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
-                "<param name=\"color\" gui-text=\"" N_("Color") "\" type=\"color\">127</param>\n"
-                "<effect>\n"
-                    "<object-type>all</object-type>\n"
-                    "<effects-menu>\n"
-                        "<submenu name=\"" N_("Filters") "\">\n"
-                           "<submenu name=\"" N_("Experimental") "\"/>\n"
+              "<name>" N_("Drop shadow, custom (Shadows and Glows)") "</name>\n"
+              "<id>org.inkscape.effect.filter.ColorDropShadow</id>\n"
+              "<param name=\"tab\" type=\"notebook\">\n"
+                "<page name=\"optionstab\" _gui-text=\"Options\">\n"
+                  "<param name=\"blur\" gui-text=\"" N_("Blur radius (px):") "\" type=\"float\" appearance=\"full\" min=\"0.0\" max=\"200.0\">3.0</param>\n"
+                  "<param name=\"xoffset\" gui-text=\"" N_("Horizontal offset (px):") "\" type=\"float\" appearance=\"full\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
+                  "<param name=\"yoffset\" gui-text=\"" N_("Vertical offset (px):") "\" type=\"float\" appearance=\"full\" min=\"-50.0\" max=\"50.0\">6.0</param>\n"
+                  "<param name=\"type\" gui-text=\"" N_("Blur type:") "\" type=\"enum\" >\n"
+                    "<_item value=\"outer\">Outer</_item>\n"
+                    "<_item value=\"inner\">Inner</_item>\n"
+                    "<_item value=\"cutout\">Cutout</_item>\n"
+                  "</param>\n"
+                "</page>\n"
+                "<page name=\"coltab\" _gui-text=\"Blur color\">\n"
+                  "<param name=\"color\" gui-text=\"" N_("Color") "\" type=\"color\">127</param>\n"
+                  "<param name=\"objcolor\" gui-text=\"" N_("Use object's color") "\" type=\"boolean\" >false</param>\n"
+                "</page>\n"
+              "</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_("Colorizable Drop shadow") "</menu-tip>\n"
-                "</effect>\n"
+                "</effects-menu>\n"
+              "<menu-tip>" N_("Colorizable Drop shadow") "</menu-tip>\n"
+              "</effect>\n"
             "</inkscape-extension>\n", new ColorizableDropShadow());
     };
 
@@ -79,9 +96,15 @@ ColorizableDropShadow::get_filter_text (Inkscape::Extension::Extension * ext)
     std::ostringstream b;
     std::ostringstream x;
     std::ostringstream y;
-
+    std::ostringstream comp1in1;
+    std::ostringstream comp1in2;
+    std::ostringstream comp1op;
+    std::ostringstream comp2in1;
+    std::ostringstream comp2in2;
+    std::ostringstream comp2op;
+    
+    const gchar *type = ext->get_param_enum("type");
     guint32 color = ext->get_param_color("color");
-
     blur << ext->get_param_float("blur");
     x << ext->get_param_float("xoffset");
     y << ext->get_param_float("yoffset");
@@ -90,14 +113,43 @@ ColorizableDropShadow::get_filter_text (Inkscape::Extension::Extension * ext)
     g << ((color >> 16) & 0xff);
     b << ((color >>  8) & 0xff);
 
+    if (ext->get_param_bool("objcolor")) {
+        comp1in1 << "SourceGraphic";
+        comp1in2 << "flood";
+    } else {
+        comp1in1 << "flood";
+        comp1in2 << "SourceGraphic";
+    }
+
+    if ((g_ascii_strcasecmp("outer", type) == 0)) {
+        comp1op << "in";
+        comp2op << "over";
+        comp2in1 << "SourceGraphic";
+        comp2in2 << "offset";
+    } else if ((g_ascii_strcasecmp("inner", type) == 0)) {
+        comp1op << "out";
+        comp2op << "atop";
+        comp2in1 << "offset";
+        comp2in2 << "SourceGraphic";
+    } else {
+        comp1op << "in";
+        comp2op << "out";
+        comp2in1 << "offset";
+        comp2in2 << "SourceGraphic";
+    }
+    
+    
     _filter = g_strdup_printf(
         "<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, custom\">\n"
           "<feFlood flood-opacity=\"%s\" flood-color=\"rgb(%s,%s,%s)\" result=\"flood\" />\n"
-          "<feComposite in=\"flood\" in2=\"SourceGraphic\" operator=\"in\" result=\"composite1\" />\n"
+          "<feComposite in=\"%s\" in2=\"%s\" operator=\"%s\" result=\"composite1\" />\n"
           "<feGaussianBlur in=\"composite1\" stdDeviation=\"%s\" result=\"blur\" />\n"
           "<feOffset dx=\"%s\" dy=\"%s\" result=\"offset\" />\n"
-          "<feComposite in=\"SourceGraphic\" in2=\"offset\" operator=\"over\" result=\"composite2\" />\n"
-        "</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());
+          "<feComposite in=\"%s\" in2=\"%s\" operator=\"%s\" result=\"composite2\" />\n"
+        "</filter>\n", a.str().c_str(), r.str().c_str(), g.str().c_str(), b.str().c_str(),
+                       comp1in1.str().c_str(), comp1in2.str().c_str(), comp1op.str().c_str(),
+                       blur.str().c_str(), x.str().c_str(), y.str().c_str(),
+                       comp2in1.str().c_str(), comp2in2.str().c_str(), comp2op.str().c_str());
 
     return _filter;
 };