Fix misnamed things in PDF backend.

QuLogic · QuLogic · commit 862b747432f8 · 2016-11-08T22:56:39.000-05:00
Doesn't change anything; just makes it consistent with what it actually
is.

Also, remove comment about DPI-dependence, because hatching should not
be DPI dependent.
diff --git a/lib/matplotlib/backends/backend_pdf.py b/lib/matplotlib/backends/backend_pdf.py
@@ -1141,12 +1141,12 @@ def alphaState(self, alpha):
     def hatchPattern(self, hatch_style):
         # The colors may come in as numpy arrays, which aren't hashable
         if hatch_style is not None:
-            face, edge, hatch = hatch_style
-            if face is not None:
-                face = tuple(face)
+            edge, face, hatch = hatch_style
             if edge is not None:
                 edge = tuple(edge)
-            hatch_style = (face, edge, hatch)
+            if face is not None:
+                face = tuple(face)
+            hatch_style = (edge, face, hatch)
 
         pattern = self.hatchPatterns.get(hatch_style, None)
         if pattern is not None:
@@ -1184,8 +1184,6 @@ def writeHatches(self):
 
             self.output(rcParams['hatch.linewidth'], Op.setlinewidth)
 
-            # TODO: We could make this dpi-dependent, but that would be
-            # an API change
             self.output(*self.pathOperations(
                 Path.hatch(path),
                 Affine2D().scale(sidelen),
