Fix callbacks accumulating bug by using a ScaledTranslation rather

mdboom · mdboom · commit 514be139fdbe · 2008-06-06T16:57:06.000Z
than a callback on dpi change.
Fix ScaledTranslation.__repr__
(Thanks Stan West for tracking down and fixing these issues).

svn path=/trunk/matplotlib/; revision=5412
diff --git a/lib/matplotlib/axes.py b/lib/matplotlib/axes.py
@@ -827,8 +827,8 @@ def cla(self):
         props = font_manager.FontProperties(size=rcParams['axes.titlesize'])
 
 
-        self.titleOffsetTrans = mtransforms.Affine2D().translate(
-            0.0, 5.0*self.figure.dpi/72.)
+        self.titleOffsetTrans = mtransforms.ScaledTranslation(
+            0.0, 5.0 / 72.0, self.figure.dpi_scale_trans)
         self.title =  mtext.Text(
             x=0.5, y=1.0, text='',
             fontproperties=props,
@@ -859,16 +859,6 @@ def cla(self):
         self.xaxis.set_clip_path(self.axesPatch)
         self.yaxis.set_clip_path(self.axesPatch)
 
-        self.titleOffsetTrans.clear().translate(
-            0.0, 5.0*self.figure.dpi/72.)
-
-        def on_dpi_change(fig):
-            self.titleOffsetTrans.clear().translate(
-                0.0, 5.0*fig.dpi/72.)
-
-        self.figure.callbacks.connect('dpi_changed', on_dpi_change)
-
-
 
     def clear(self):
         'clear the axes'
diff --git a/lib/matplotlib/transforms.py b/lib/matplotlib/transforms.py
@@ -2043,7 +2043,7 @@ def __init__(self, xt, yt, scale_trans):
         self._inverted = None
 
     def __repr__(self):
-        return "ScaledTranslation(%s)" % (self._t)
+        return "ScaledTranslation(%s)" % (self._t,)
     __str__ = __repr__
 
     def get_matrix(self):
