From c77aac3c8ee0b53e85610e2cf708c3cee7422981 Mon Sep 17 00:00:00 2001
From: JazzyNico <nicoduf@yahoo.fr>
Date: Sun, 14 Feb 2010 10:46:42 +0100
Subject: [PATCH] Extensions. New black and white color extension.

---
 share/extensions/Makefile.am             |  2 ++
 share/extensions/color_blackandwhite.inx | 17 +++++++++++++++++
 share/extensions/color_blackandwhite.py  | 17 +++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 share/extensions/color_blackandwhite.inx
 create mode 100644 share/extensions/color_blackandwhite.py

diff --git a/share/extensions/Makefile.am b/share/extensions/Makefile.am
index 110522895..c40ba1c87 100644
--- a/share/extensions/Makefile.am
+++ b/share/extensions/Makefile.am
@@ -18,6 +18,7 @@ extensions = \
 	addnodes.py \
 	bezmisc.py \
 	chardataeffect.py\
+	color_blackandwhite.py\
 	color_brighter.py\
 	color_custom.py\
 	color_darker.py\
@@ -154,6 +155,7 @@ modules = \
 	cdt_input.inx \
 	cgm_input.inx \
 	cmx_input.inx \
+	color_blackandwhite.inx\
 	color_brighter.inx\
 	color_custom.inx \
 	color_darker.inx\
diff --git a/share/extensions/color_blackandwhite.inx b/share/extensions/color_blackandwhite.inx
new file mode 100644
index 000000000..8432ab2d3
--- /dev/null
+++ b/share/extensions/color_blackandwhite.inx
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+	<_name>Black and White</_name>
+	<id>org.inkscape.color.blackandwhite</id>
+	<dependency type="executable" location="extensions">coloreffect.py</dependency>
+	<dependency type="executable" location="extensions">color_blackandwhite.py</dependency>
+	<dependency type="executable" location="extensions">simplestyle.py</dependency>
+	<effect>
+		<object-type>all</object-type>
+		<effects-menu>
+			<submenu _name="Color"/>
+		</effects-menu>
+	</effect>
+	<script>
+		<command reldir="extensions" interpreter="python">color_blackandwhite.py</command>
+	</script>
+</inkscape-extension>
diff --git a/share/extensions/color_blackandwhite.py b/share/extensions/color_blackandwhite.py
new file mode 100644
index 000000000..c11b2a127
--- /dev/null
+++ b/share/extensions/color_blackandwhite.py
@@ -0,0 +1,17 @@
+import coloreffect,sys
+
+class C(coloreffect.ColorEffect):
+  def colmod(self,r,g,b):
+    #ITU-R Recommendation BT.709
+    #l = 0.2125 * r + 0.7154 * g + 0.0721 * b
+    #NTSC and PAL
+    l = 0.299 * r + 0.587 * g + 0.114 * b
+    if l > 127:
+       ig = 255
+    else:
+       ig = 0
+    #coloreffect.debug('gs '+hex(r)+' '+hex(g)+' '+hex(b)+'%02x%02x%02x' % (ig,ig,ig))
+    return '%02x%02x%02x' % (ig,ig,ig)
+
+c = C()
+c.affect()
-- 
2.30.2