color effects

(bzr r1953)

28 files changed, 494 insertions, 2 deletions

diff --git a/share/extensions/Makefile.am b/share/extensions/Makefile.am
index 33afbd014..bc0c0b49f 100644
--- a/share/extensions/Makefile.am
+++ b/share/extensions/Makefile.am
@@ -63,7 +63,22 @@ extensions = \
 	webbrowser_reportabug.py \
 	webbrowser_svgspec.py \
 	webbrowser_commandline.py \
-	webbrowser_faq.py
+	webbrowser_faq.py\
+	color_custom.py\
+	color_desaturate.py\
+	coloreffect.py\
+	color_grayscale.py\
+	color_brighter.py\
+	color_darker.py\
+	color_keepblue.py\
+	color_keepgreen.py\
+	color_keepred.py\
+	color_negative.py\
+	color_removeblue.py\
+	color_removegreen.py\
+	color_removered.py\
+	color_rgbbarrel.py
+
 
 otherstuff = \
     aisvg.xslt
@@ -124,7 +139,20 @@ modules = \
 	inkscape_help_reportabug.inx \
 	inkscape_help_svgspec.inx \
 	inkscape_help_commandline.inx \
-	inkscape_help_faq.inx
+	inkscape_help_faq.inx\
+	color_brighter.inx\
+	color_darker.inx\
+	color_desaturate.inx\
+	color_grayscale.inx\
+	color_negative.inx\
+	color_keepblue.inx\
+	color_keepgreen.inx\
+	color_keepred.inx\
+	color_removeblue.inx\
+	color_removegreen.inx\
+	color_removered.inx\
+	color_rgbbarrel.inx\
+	color_custom.inx 
 
 
 extension_SCRIPTS = \
diff --git a/share/extensions/color_brighter.inx b/share/extensions/color_brighter.inx
new file mode 100644
index 000000000..adc34410d
--- /dev/null
+++ b/share/extensions/color_brighter.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Brighter</_name>

+	<id>com.kaioa.brighter</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_brighter.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_brighter.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_brighter.py b/share/extensions/color_brighter.py
new file mode 100644
index 000000000..d7a52ee70
--- /dev/null
+++ b/share/extensions/color_brighter.py
@@ -0,0 +1,24 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    FACTOR=0.9
+   

+    i=int(1.0/(1.0-FACTOR))

+    if r==0 and g==0 and b==0:

+      return '%02x%02x%02x' % (i,i,i)

+    if r>0 and r<i:

+      r=i

+    if g>0 and g<i:

+      g=i

+    if b>0 and b<i:

+      b=i;

+

+    r=min(int(round((r/FACTOR))), 255)

+    g=min(int(round((g/FACTOR))), 255)

+    b=min(int(round((b/FACTOR))), 255)

+   

+    return '%02x%02x%02x' % (r,g,b)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_custom.inx b/share/extensions/color_custom.inx
new file mode 100644
index 000000000..8ba2cd520
--- /dev/null
+++ b/share/extensions/color_custom.inx
@@ -0,0 +1,19 @@
+<inkscape-extension>

+	<_name>Custom</_name>

+	<id>com.kaioa.zcustom</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_custom.py</dependency>

+	<dependency type="executable" location="extensions">simplestyle.py</dependency>

+	<param name="r" type="string" _gui-text="Red Function">r</param>

+	<param name="g" type="string" _gui-text="Green Function">g</param>

+	<param name="b" type="string" _gui-text="Blue Function">b</param>

+	<effect>

+		<object-type>all</object-type>

+		<effects-menu>

+			<submenu _name="Color"/>

+		</effects-menu>

+	</effect>

+	<script>

+		<command reldir="extensions" interpreter="python">color_custom.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_custom.py b/share/extensions/color_custom.py
new file mode 100644
index 000000000..b3daced30
--- /dev/null
+++ b/share/extensions/color_custom.py
@@ -0,0 +1,31 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def __init__(self):

+    coloreffect.ColorEffect.__init__(self)

+    self.OptionParser.add_option("--r", action="store", type="string", dest="rFunction", default="r",help="red channel function")

+    self.OptionParser.add_option("--g", action="store", type="string", dest="gFunction", default="g",help="green channel function")

+    self.OptionParser.add_option("--b", action="store", type="string", dest="bFunction", default="b",help="blue channel function")

+  def normalize(self, v):

+    if v<0:

+      return 0.0

+    if v>1:

+      return 1.0

+    return v

+  def colmod(self,_r,_g,_b):

+    r=float(_r)/255

+    g=float(_g)/255

+    b=float(_b)/255

+    #coloreffect.debug('I: %f %f %f' % (r,g,b))

+    r=eval(self.options.rFunction)

+    g=eval(self.options.gFunction)

+    b=eval(self.options.bFunction)

+    #coloreffect.debug('E: %f %f %f' % (r,g,b))

+    r=self.normalize(r)

+    g=self.normalize(g)

+    b=self.normalize(b)

+    #coloreffect.debug('N: %f %f %f' % (r,g,b))

+    return '%02x%02x%02x' % (int(round(r*255)),int(round(g*255)),int(round(b*255)))

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_darker.inx b/share/extensions/color_darker.inx
new file mode 100644
index 000000000..aa937adc1
--- /dev/null
+++ b/share/extensions/color_darker.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Darker</_name>

+	<id>com.kaioa.darker</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_darker.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_darker.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_darker.py b/share/extensions/color_darker.py
new file mode 100644
index 000000000..ce8899444
--- /dev/null
+++ b/share/extensions/color_darker.py
@@ -0,0 +1,12 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    FACTOR=0.9
+    r=int(round(max(r*FACTOR,0)))

+    g=int(round(max(g*FACTOR,0)))

+    b=int(round(max(b*FACTOR,0)))

+    return '%02x%02x%02x' % (r,g,b)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_desaturate.inx b/share/extensions/color_desaturate.inx
new file mode 100644
index 000000000..2aa6c0201
--- /dev/null
+++ b/share/extensions/color_desaturate.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Desaturate</_name>

+	<id>com.kaioa.desaturate</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_desaturate.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_desaturate.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_desaturate.py b/share/extensions/color_desaturate.py
new file mode 100644
index 000000000..efdf2658a
--- /dev/null
+++ b/share/extensions/color_desaturate.py
@@ -0,0 +1,10 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    l = (max(r,g,b)+min(r,g,b))/2

+    ig=int(round(l))

+    return '%02x%02x%02x' % (ig,ig,ig)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_grayscale.inx b/share/extensions/color_grayscale.inx
new file mode 100644
index 000000000..495a3aa18
--- /dev/null
+++ b/share/extensions/color_grayscale.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Grayscale</_name>

+	<id>com.kaioa.grayscale</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_grayscale.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_grayscale.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_grayscale.py b/share/extensions/color_grayscale.py
new file mode 100644
index 000000000..e8c44459a
--- /dev/null
+++ b/share/extensions/color_grayscale.py
@@ -0,0 +1,14 @@
+import coloreffect

+

+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

+    ig=int(round(l))

+    #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()
\ No newline at end of file
diff --git a/share/extensions/color_keepblue.inx b/share/extensions/color_keepblue.inx
new file mode 100644
index 000000000..900f5558b
--- /dev/null
+++ b/share/extensions/color_keepblue.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Keep Blue</_name>

+	<id>com.kaioa.keepblue</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_keepblue.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_keepblue.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_keepblue.py b/share/extensions/color_keepblue.py
new file mode 100644
index 000000000..205a87947
--- /dev/null
+++ b/share/extensions/color_keepblue.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (0,0,b)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_keepgreen.inx b/share/extensions/color_keepgreen.inx
new file mode 100644
index 000000000..0ee1dddd0
--- /dev/null
+++ b/share/extensions/color_keepgreen.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Keep Green</_name>

+	<id>com.kaioa.keepgreen</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_keepgreen.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_keepgreen.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_keepgreen.py b/share/extensions/color_keepgreen.py
new file mode 100644
index 000000000..3da5e451b
--- /dev/null
+++ b/share/extensions/color_keepgreen.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (0,g,0)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_keepred.inx b/share/extensions/color_keepred.inx
new file mode 100644
index 000000000..824fa2bc4
--- /dev/null
+++ b/share/extensions/color_keepred.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Keep Red</_name>

+	<id>com.kaioa.keepred</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_keepred.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_keepred.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_keepred.py b/share/extensions/color_keepred.py
new file mode 100644
index 000000000..662e521e0
--- /dev/null
+++ b/share/extensions/color_keepred.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (r,0,0)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_negative.inx b/share/extensions/color_negative.inx
new file mode 100644
index 000000000..7dc73c3cc
--- /dev/null
+++ b/share/extensions/color_negative.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Negative</_name>

+	<id>com.kaioa.negative</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_negative.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_negative.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_negative.py b/share/extensions/color_negative.py
new file mode 100644
index 000000000..0fb2fcecb
--- /dev/null
+++ b/share/extensions/color_negative.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (255-r,255-g,255-b)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_removeblue.inx b/share/extensions/color_removeblue.inx
new file mode 100644
index 000000000..2dadb5a53
--- /dev/null
+++ b/share/extensions/color_removeblue.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Remove Blue</_name>

+	<id>com.kaioa.removeblue</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_removeblue.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_removeblue.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_removeblue.py b/share/extensions/color_removeblue.py
new file mode 100644
index 000000000..90d3fe7c2
--- /dev/null
+++ b/share/extensions/color_removeblue.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (r,g,0)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_removegreen.inx b/share/extensions/color_removegreen.inx
new file mode 100644
index 000000000..13ea8666b
--- /dev/null
+++ b/share/extensions/color_removegreen.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Remove Green</_name>

+	<id>com.kaioa.removegreen</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_removegreen.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_removegreen.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_removegreen.py b/share/extensions/color_removegreen.py
new file mode 100644
index 000000000..87722df54
--- /dev/null
+++ b/share/extensions/color_removegreen.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (r,0,b)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_removered.inx b/share/extensions/color_removered.inx
new file mode 100644
index 000000000..ef74410d7
--- /dev/null
+++ b/share/extensions/color_removered.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>Remove Red</_name>

+	<id>com.kaioa.removered</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_removered.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_removered.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_removered.py b/share/extensions/color_removered.py
new file mode 100644
index 000000000..54d071e3f
--- /dev/null
+++ b/share/extensions/color_removered.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (0,g,b)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/color_rgbbarrel.inx b/share/extensions/color_rgbbarrel.inx
new file mode 100644
index 000000000..a676dae85
--- /dev/null
+++ b/share/extensions/color_rgbbarrel.inx
@@ -0,0 +1,16 @@
+<inkscape-extension>

+	<_name>RGB Barrel</_name>

+	<id>com.kaioa.rgbbarrel</id>

+	<dependency type="executable" location="extensions">coloreffect.py</dependency>

+	<dependency type="executable" location="extensions">color_rgbbarrel.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_rgbbarrel.py</command>

+	</script>

+</inkscape-extension>
\ No newline at end of file
diff --git a/share/extensions/color_rgbbarrel.py b/share/extensions/color_rgbbarrel.py
new file mode 100644
index 000000000..41a0a4e1b
--- /dev/null
+++ b/share/extensions/color_rgbbarrel.py
@@ -0,0 +1,8 @@
+import coloreffect

+

+class C(coloreffect.ColorEffect):

+  def colmod(self,r,g,b):

+    return '%02x%02x%02x' % (b,r,g)

+

+c = C()

+c.affect()
\ No newline at end of file
diff --git a/share/extensions/coloreffect.py b/share/extensions/coloreffect.py
new file mode 100644
index 000000000..214495502
--- /dev/null
+++ b/share/extensions/coloreffect.py
@@ -0,0 +1,98 @@
+#!/usr/bin/env python 

+'''

+Copyright (C) 2006 Jos Hirth, kaioa.com

+

+This program is free software; you can redistribute it and/or modify

+it under the terms of the GNU General Public License as published by

+the Free Software Foundation; either version 2 of the License, or

+(at your option) any later version.

+

+This program is distributed in the hope that it will be useful,

+but WITHOUT ANY WARRANTY; without even the implied warranty of

+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+GNU General Public License for more details.

+

+You should have received a copy of the GNU General Public License

+along with this program; if not, write to the Free Software

+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

+'''

+import sys, copy, optparse, simplestyle, inkex

+

+import xml.xpath

+

+color_props_fill=('fill:','stop-color:','flood-color:','lighting-color:')

+color_props_stroke=('stroke:',)

+color_props = color_props_fill + color_props_stroke

+

+class ColorEffect(inkex.Effect):

+  def __init__(self):

+    inkex.Effect.__init__(self,use_minidom=True)

+

+  def effect(self):

+    if len(self.selected)==0:

+      self.getAttribs(self.document)

+    else:

+      for id,node in self.selected.iteritems():

+        self.getAttribs(node)

+

+  def getAttribs(self,node):

+    self.changeStyle(node)

+    if node.hasChildNodes():

+      childs=node.childNodes

+      for child in childs:

+        self.getAttribs(child)

+  

+  def changeStyle(self,node):

+    if node.hasAttributes():

+      style=node.getAttribute('style') # fixme: this will break for presentation attributes!

+      if style!='':

+        #inkex.debug('old style:'+style)

+        styles=style.split(';')

+        for i in range(len(styles)):

+          for c in range(len(color_props)):

+            if styles[i].startswith(color_props[c]):

+              styles[i]=color_props[c]+self.process_prop(styles[i][len(color_props[c]):])

+        #inkex.debug('new style:'+';'.join(styles))

+        node.setAttribute('style',';'.join(styles))

+  '''

+  def changeStyle(self,node):

+    if node.hasAttributes():

+      sa=node.getAttribute('style')

+      if sa!='':

+        debug(sa)

+        styles=simplestyle.parseStyle(sa)

+        for c in range(len(colortags)):

+          if colortags[c] in styles.keys():

+            styles[colortags[c]]=self.process_prop(styles[colortags[c]])

+        node.setAttribute('style',simplestyle.formatStyle(styles))

+  '''        

+  def process_prop(self,col):

+    #debug('got:'+col)

+    if simplestyle.isColor(col):

+      c=simplestyle.parseColor(col)

+      col='#'+self.colmod(c[0],c[1],c[2])

+      #debug('made:'+col)

+    if col.startswith('url(#'):

+	id = col[len('url(#'):col.find(')')]

+	#inkex.debug('ID:' + id )

+	path = '//*[@id="%s"]' % id

+	for node in xml.xpath.Evaluate(path,self.document):

+	  self.process_gradient(node)

+    return col

+

+  def process_gradient(self, node):

+    self.changeStyle(node)

+    if node.hasChildNodes():

+      for child in node.childNodes:

+        self.process_gradient(child)

+    if node.hasAttributes():				

+      href=node.getAttribute('xlink:href')

+      if href.startswith('#'):

+        id = href[len('#'):len(href)]

+        #inkex.debug('ID:' + id )

+        path = '//*[@id="%s"]' % id

+        for node in xml.xpath.Evaluate(path,self.document):

+          self.process_gradient(node)

+ 

+  def colmod(self,r,g,b):

+    pass