From fe0a749f3f5f5db0795efe3e43a8c390bec44cc3 Mon Sep 17 00:00:00 2001
From: JazzyNico <nicoduf@yahoo.fr>
Date: Sun, 12 Sep 2010 14:17:52 +0200
Subject: [PATCH] Filters. New customizable Bicolorizer filter (experimental).

---
 src/extension/internal/filter/color.h        | 115 +++++++++++++++++++
 src/extension/internal/filter/filter-all.cpp |   2 +
 2 files changed, 117 insertions(+)
 create mode 100644 src/extension/internal/filter/color.h

diff --git a/src/extension/internal/filter/color.h b/src/extension/internal/filter/color.h
new file mode 100644
index 000000000..4fd60aab8
--- /dev/null
+++ b/src/extension/internal/filter/color.h
@@ -0,0 +1,115 @@
+#ifndef __INKSCAPE_EXTENSION_INTERNAL_FILTER_COLOR_H__
+#define __INKSCAPE_EXTENSION_INTERNAL_FILTER_COLOR_H__
+/* Change the 'COLOR' above to be your file name */
+
+/*
+ * Copyright (C) 2010 Authors:
+ *   Ivan Louette (filters)
+ *   Nicolas Dufour (UI) <nicoduf@yahoo.fr>
+ *
+ * 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 {
+
+class Bicolorizer : public Inkscape::Extension::Internal::Filter::Filter {
+protected:
+	virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
+
+public:
+	Bicolorizer ( ) : Filter() { };
+	virtual ~Bicolorizer ( ) { 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_("Bicolorizer -EXP-") "</name>\n"
+				"<id>org.inkscape.effect.filter.bicolorizer</id>\n"
+// Using color widgets in tabs makes Inkscape crash...
+//	            "<param name=\"tab\" type=\"notebook\">\n"
+//                    "<page name=\"Color1\" _gui-text=\"Color 1\">\n"
+                        "<_param name=\"header1\" type=\"groupheader\">Color 1</_param>\n"
+				        "<param name=\"color1\" gui-text=\"" N_("Color 1") "\" type=\"color\">1946122495</param>\n"
+//                    "</page>\n"
+//                    "<page name=\"Color2\" _gui-text=\"Color 2\">\n"
+                        "<_param name=\"header2\" type=\"groupheader\">Color 2</_param>\n"
+				        "<param name=\"color2\" gui-text=\"" N_("Color 2") "\" type=\"color\">367387135</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_("Color") "\"/>\n"
+			      "</submenu>\n"
+					"</effects-menu>\n"
+					"<menu-tip>" N_("Change colors to a two colors palette") "</menu-tip>\n"
+				"</effect>\n"
+			"</inkscape-extension>\n", new Bicolorizer());
+	};
+
+};
+
+gchar const *
+Bicolorizer::get_filter_text (Inkscape::Extension::Extension * ext)
+{
+	if (_filter != NULL) g_free((void *)_filter);
+
+    std::ostringstream a1;
+    std::ostringstream r1;
+    std::ostringstream g1;
+    std::ostringstream b1;
+    std::ostringstream a2;
+    std::ostringstream r2;
+    std::ostringstream g2;
+    std::ostringstream b2;
+
+    guint32 color1 = ext->get_param_color("color1");
+    guint32 color2 = ext->get_param_color("color2");
+    a1 << (color1 & 0xff) / 255.0F;
+    r1 << ((color1 >> 24) & 0xff);
+    g1 << ((color1 >> 16) & 0xff);
+    b1 << ((color1 >>  8) & 0xff);
+    a2 << (color2 & 0xff) / 255.0F;
+    r2 << ((color2 >> 24) & 0xff);
+    g2 << ((color2 >> 16) & 0xff);
+    b2 << ((color2 >>  8) & 0xff);
+
+	_filter = g_strdup_printf(
+		"<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Bicolorizer -EXP-\">\n"
+            "<feColorMatrix result=\"fbSourceGraphic\" type=\"luminanceToAlpha\" />\n"
+            "<feFlood flood-opacity=\"%s\" in=\"fbSourceGraphic\" result=\"result1\" flood-color=\"rgb(%s,%s,%s)\" />\n"
+            "<feColorMatrix values=\"0\" result=\"result7\" type=\"hueRotate\" />\n"
+            "<feColorMatrix values=\"1\" type=\"saturate\" result=\"result8\" />\n"
+            "<feComposite result=\"result2\" operator=\"out\" in=\"result8\" in2=\"fbSourceGraphic\" />\n"
+            "<feComposite k2=\"1\" result=\"fbSourceGraphic\" operator=\"arithmetic\" in2=\"SourceGraphic\" />\n"
+            "<feFlood flood-opacity=\"%s\" in=\"fbSourceGraphic\" result=\"result2\" flood-color=\"rgb(%s,%s,%s)\" />\n"
+            "<feColorMatrix result=\"result3\" values=\"0\" type=\"hueRotate\" />\n"
+            "<feColorMatrix values=\"1\" result=\"result9\" type=\"saturate\" />\n"
+            "<feMerge result=\"result5\">\n"
+                "<feMergeNode in=\"result9\" />\n"
+                "<feMergeNode in=\"fbSourceGraphic\" />\n"
+            "</feMerge>\n"
+            "<feBlend result=\"result6\" mode=\"normal\" blend=\"normal\" in2=\"fbSourceGraphic\" />\n"
+            "<feComposite result=\"result6\" operator=\"in\" in2=\"SourceGraphic\" />\n"
+        "</filter>\n", a1.str().c_str(), r1.str().c_str(), g1.str().c_str(), b1.str().c_str(), a2.str().c_str(), r2.str().c_str(), g2.str().c_str(), b2.str().c_str());
+
+	return _filter;
+};
+}; /* namespace Filter */
+}; /* namespace Internal */
+}; /* namespace Extension */
+}; /* namespace Inkscape */
+
+/* Change the 'COLOR' below to be your file name */
+#endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_COLOR_H__ */
diff --git a/src/extension/internal/filter/filter-all.cpp b/src/extension/internal/filter/filter-all.cpp
index 6d61501fb..de683ba83 100644
--- a/src/extension/internal/filter/filter-all.cpp
+++ b/src/extension/internal/filter/filter-all.cpp
@@ -8,6 +8,7 @@
 #include "filter.h"
 
 /* Put your filter here */
+#include "color.h"
 #include "drop-shadow.h"
 #include "snow.h"
 
@@ -21,6 +22,7 @@ void
 Filter::filters_all (void )
 {
 	// Here come the filters which are coded in C++ in order to present a parameters dialog
+    Bicolorizer::init();
 	DropShadow::init();
 	DropGlow::init();
     ColorizableDropShadow::init();
-- 
2.30.2