SF.net SVN: matplotlib: [3756] trunk/matplotlib/lib/matplotlib/mathtext.py

[<md...@us...>]

Revision: 3756
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=3756&view=rev
Author:   mdboom
Date:     2007-08-30 06:51:10 -0700 (Thu, 30 Aug 2007)

Log Message:
-----------
Reduce Ps files sizes when using mathtext

Modified Paths:
--------------
    trunk/matplotlib/lib/matplotlib/mathtext.py

Modified: trunk/matplotlib/lib/matplotlib/mathtext.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/mathtext.py	2007-08-30 13:41:52 UTC (rev 3755)
+++ trunk/matplotlib/lib/matplotlib/mathtext.py	2007-08-30 13:51:10 UTC (rev 3756)
@@ -315,6 +315,7 @@
 class MathtextBackendPs(MathtextBackend):
     def __init__(self):
         self.pswriter = StringIO()
+        self.lastfont = None
 
     def render_glyph(self, ox, oy, info):
         oy = self.height - oy + info.offset
@@ -322,12 +323,15 @@
         fontsize        = info.fontsize
         symbol_name     = info.symbol_name
 
-        # TODO: Optimize out the font changes
-        
-        ps = """/%(postscript_name)s findfont
+        if (postscript_name, fontsize) != self.lastfont:
+            ps = """/%(postscript_name)s findfont
 %(fontsize)s scalefont
 setfont
-%(ox)f %(oy)f moveto
+""" % locals()
+            self.lastfont = postscript_name, fontsize
+            self.pswriter.write(ps)
+        
+        ps = """%(ox)f %(oy)f moveto
 /%(symbol_name)s glyphshow\n
 """ % locals()
         self.pswriter.write(ps)


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