SF.net SVN: matplotlib: [5112] trunk/matplotlib/lib/matplotlib/backends/ backend_mixed.py

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

Revision: 5112
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5112&view=rev
Author:   mdboom
Date:     2008-05-05 08:13:23 -0700 (Mon, 05 May 2008)

Log Message:
-----------
Allow "start_rasterizing"/"stop_rasterizing" to be nested.

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

Modified: trunk/matplotlib/lib/matplotlib/backends/backend_mixed.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_mixed.py	2008-05-05 15:12:29 UTC (rev 5111)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_mixed.py	2008-05-05 15:13:23 UTC (rev 5112)
@@ -36,7 +36,7 @@
         self._vector_renderer = vector_renderer
 
         self._raster_renderer = None
-        self._rasterizing = False
+        self._rasterizing = 0
 
         self._set_current_renderer(vector_renderer)
 
@@ -65,11 +65,11 @@
         If start_rasterizing is called multiple times before
         stop_rasterizing is called, this method has no effect.
         """
-        if not self._rasterizing:
+        if self._rasterizing == 0:
             self._raster_renderer = self._raster_renderer_class(
                 self._width*self.dpi, self._height*self.dpi, self.dpi)
             self._set_current_renderer(self._raster_renderer)
-            self._rasterizing = True
+        self._rasterizing += 1
 
     def stop_rasterizing(self):
         """
@@ -80,7 +80,8 @@
         If stop_rasterizing is called multiple times before
         start_rasterizing is called, this method has no effect.
         """
-        if self._rasterizing:
+        self._rasterizing -= 1
+        if self._rasterizing == 0:
             self._set_current_renderer(self._vector_renderer)
 
             width, height = self._width * self.dpi, self._height * self.dpi


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