Avoid using private APIs in examples.

anntzer · anntzer · commit efafd31f252c · 2018-07-18T13:48:53.000+02:00
Most fixes are trivial, except the removal of the call to
_update_patch_transform() in widgets/menu.py: this is OK because calling
Rectangle.draw() will itself call _update_patch_transform() via
get_patch_transform().
diff --git a/examples/specialty_plots/radar_chart.py b/examples/specialty_plots/radar_chart.py
@@ -90,7 +90,7 @@ def _gen_axes_patch(self):
 
         def _gen_axes_spines(self):
             if frame == 'circle':
-                return PolarAxes._gen_axes_spines(self)
+                return super()._gen_axes_spines()
             # The following is a hack to get the spines (i.e. the axes frame)
             # to draw correctly for a polygon frame.
 
diff --git a/examples/text_labels_and_annotations/demo_text_path.py b/examples/text_labels_and_annotations/demo_text_path.py
@@ -66,9 +66,7 @@ def draw(self, renderer=None):
 
     ax = plt.subplot(211)
 
-    from matplotlib._png import read_png
-    fn = get_sample_data("grace_hopper.png", asfileobj=False)
-    arr = read_png(fn)
+    arr = plt.imread(get_sample_data("grace_hopper.png"))
 
     text_path = TextPath((0, 0), "!?", size=150)
     p = PathClippedImagePatch(text_path, arr, ec="k",
diff --git a/examples/text_labels_and_annotations/rainbow_text.py b/examples/text_labels_and_annotations/rainbow_text.py
@@ -48,15 +48,17 @@ def rainbow_text(x, y, strings, colors, ax=None, **kw):
         text = ax.text(x, y, s + " ", color=c, transform=t, **kw)
         text.draw(canvas.get_renderer())
         ex = text.get_window_extent()
-        t = transforms.offset_copy(text._transform, x=ex.width, units='dots')
+        t = transforms.offset_copy(
+            text.get_transform(), x=ex.width, units='dots')
 
     # vertical version
     for s, c in zip(strings, colors):
         text = ax.text(x, y, s + " ", color=c, transform=t,
                        rotation=90, va='bottom', ha='center', **kw)
         text.draw(canvas.get_renderer())
         ex = text.get_window_extent()
-        t = transforms.offset_copy(text._transform, y=ex.height, units='dots')
+        t = transforms.offset_copy(
+            text.get_transform(), y=ex.height, units='dots')
 
 
 rainbow_text(0, 0, "all unicorns poop rainbows ! ! !".split(),
diff --git a/examples/widgets/menu.py b/examples/widgets/menu.py
@@ -89,7 +89,6 @@ def set_extent(self, x, y, w, h):
         self.label.ox = x + self.padx
         self.label.oy = y - self.depth + self.pady/2.
 
-        self.rect._update_patch_transform()
         self.hover = False
 
     def draw(self, renderer):
