SF.net SVN: matplotlib:[8412] trunk/matplotlib/lib/matplotlib/backends/ backend_cairo.py

[<ef...@us...>]

Revision: 8412
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8412&view=rev
Author:   efiring
Date:     2010-06-11 08:09:25 +0000 (Fri, 11 Jun 2010)

Log Message:
-----------
[3014606] fix set_alpha in backend_cairo

Modified Paths:
--------------
    trunk/matplotlib/lib/matplotlib/backends/backend_cairo.py

Modified: trunk/matplotlib/lib/matplotlib/backends/backend_cairo.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_cairo.py	2010-06-11 07:23:54 UTC (rev 8411)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_cairo.py	2010-06-11 08:09:25 UTC (rev 8412)
@@ -140,8 +140,8 @@
 
 
     def draw_path(self, gc, path, transform, rgbFace=None):
-        if len(path.vertices) > 18980:   
-            raise ValueError("The Cairo backend can not draw paths longer than 18980 points.")   
+        if len(path.vertices) > 18980:
+            raise ValueError("The Cairo backend can not draw paths longer than 18980 points.")
 
         ctx = gc.ctx
 
@@ -315,9 +315,10 @@
 
 
     def set_alpha(self, alpha):
-        self._alpha = alpha
+        GraphicsContextBase.set_alpha(self, alpha)
+        _alpha = self.get_alpha()
         rgb = self._rgb
-        self.ctx.set_source_rgba (rgb[0], rgb[1], rgb[2], alpha)
+        self.ctx.set_source_rgba (rgb[0], rgb[1], rgb[2], _alpha)
 
 
     #def set_antialiased(self, b):


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