Index: measure.inx
===================================================================
--- measure.inx	(revision 13513)
+++ measure.inx	(working copy)
@@ -3,7 +3,10 @@
     <id>com.njhurst.filter.measure_length</id>
 	<dependency type="executable" location="extensions">measure.py</dependency>
 	<dependency type="executable" location="extensions">inkex.py</dependency>
-	<param name="fontsize" type="string" _gui-text="Font size">10</param>
+	<param name="fontsize" type="string" _gui-text="Font size [pt]">12</param>
+	<param name="unit" type="string" _gui-text="Unit {m|cm|mm|in|px|pt}">mm</param>
+	<param name="offset" type="string" _gui-text="Offset [px]">-6</param>
+	<param name="precision" type="string" _gui-text="Precision">2</param>
     <effect>
 		<object-type>path</object-type>
                 <effects-menu>
Index: measure.py
===================================================================
--- measure.py	(revision 13513)
+++ measure.py	(working copy)
@@ -1,5 +1,10 @@
 #!/usr/bin/env python 
 '''
+This extension module can measure arbitrary path and object length
+It adds a text to the selected path containing the length in a
+given unit.
+
+Copyright (C) 2006 Georg Wiora
 Copyright (C) 2006 Nathan Hurst
 Copyright (C) 2005 Aaron Spike, aaron@ekips.org
 
@@ -17,7 +22,9 @@
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 '''
-import inkex, simplestyle, simplepath,sys,cubicsuperpath, bezmisc
+import inkex, simplestyle, simplepath,sys,cubicsuperpath, bezmisc, locale
+# Set current system locale
+locale.setlocale(locale.LC_ALL, '')
 
 def numsegs(csp):
     return sum([len(p)-1 for p in csp])
@@ -66,8 +73,16 @@
                         help="Size of node label numbers")    
         self.OptionParser.add_option("-o", "--offset",
                         action="store", type="string", 
-                        dest="offset", default="-4",
+                        dest="offset", default="-6",
                         help="The distance above the curve")    
+        self.OptionParser.add_option("-u", "--unit",
+                        action="store", type="string", 
+                        dest="unit", default="mm",
+                        help="The unit of the measurement")
+        self.OptionParser.add_option("-p", "--precision",
+                        action="store", type="string", 
+                        dest="precision", default="2",
+                        help="Number of significant digits after decimal point")
     def effect(self):
         for id, node in self.selected.iteritems():
             if node.tagName == 'path':
@@ -84,20 +99,40 @@
                 p = cubicsuperpath.parsePath(node.attributes.getNamedItem('d').value)
                 num = 1
                 slengths, stotal = csplength(p)
-                self.addTextOnPath(self.group,0, 0,str(stotal), id, self.options.offset)
+                ''' Wio: Umrechnung in unit '''
+                if self.options.unit=="mm":
+                    factor=0.2822219  # px->mm
+                elif self.options.unit=="pt":
+                    factor=0.80       # px->pt
+                elif self.options.unit=="cm":
+                    factor=0.02822219 # px->cm
+                elif self.options.unit=="m":
+                    factor=0.0002822219 # px->m
+                elif self.options.unit=="in":
+                    factor=0.2822219/25.4 # px->in
+                else :
+                    ''' Default unit is px'''
+                    factor=1
+                    self.options.unit="px"
+                
+                # Format the length as string
+                lenstr = locale.format("%(len)10."+str(self.options.precision)+"f",{'len':stotal*factor}).strip()
+                self.addTextOnPath(self.group,0, 0,lenstr+' '+self.options.unit, id, self.options.offset)
 
 
     def addTextOnPath(self,node,x,y,text, id,dy=0):
                 new = self.document.createElement('svg:text')
                 tp = self.document.createElement('svg:textPath')
-                s = {'font-size': self.options.fontsize, 'fill-opacity': '1.0', 'stroke': 'none',
+                s = {'text-align': 'center', 'vertical-align': 'bottom', 
+                    'font-size': self.options.fontsize,
+                    'fill-opacity': '1.0', 'stroke': 'none',
                     'font-weight': 'normal', 'font-style': 'normal', 'fill': '#000000'}
                 new.setAttribute('style', simplestyle.formatStyle(s))
                 new.setAttribute('x', str(x))
                 new.setAttribute('y', str(y))
                 tp.setAttributeNS('http://www.w3.org/1999/xlink','xlink:href', '#'+id)
                 tp.setAttribute('startOffset', "50%")
-                #tp.setAttribute('dy', dy) # dubious merit
+                tp.setAttribute('dy', dy) # dubious merit
                 new.appendChild(tp)
                 tp.appendChild(self.document.createTextNode(str(text)))
                 node.appendChild(new)