fix some mistakes

lib/matplotlib/_tight_layout.py

@@ -201,6 +201,7 @@ def auto_adjust_subplotpars(
 def get_renderer(fig):
     fig._get_cached_renderer()
 
+
 def get_subplotspec_list(axes_list, grid_spec=None):
     """
     Return a list of subplotspec from the given list of axes.

lib/matplotlib/figure.py

@@ -1567,14 +1567,6 @@ def get_default_bbox_extra_artists(self):
                 bbox_artists.extend(ax.get_default_bbox_extra_artists())
         return bbox_artists
 
-    def _get_cached_renderer(self):
-        if self._cachedRenderer is not None:
-            return self._cachedRenderer
-        elif hasattr(self.canvas, 'get_renderer'):
-            return self.canvas.get_renderer()
-        else:
-            return _get_renderer(self)
-
     def get_tightbbox(self, renderer=None, bbox_extra_artists=None):
         """
         Return a (tight) bounding box of the figure *in inches*.
@@ -2014,6 +2006,9 @@ def dpi(self):
     def dpi(self, value):
         self._parent.dpi = value
 
+    def _get_cached_renderer(self):
+        return self._parent._get_cached_renderer()
+
     def _redo_transform_rel_fig(self, bbox=None):
         """
         Make the transSubfigure bbox relative to Figure transform.
@@ -2441,6 +2436,14 @@ def axes(self):
 
     get_axes = axes.fget
 
+    def _get_cached_renderer(self):
+        if self._cachedRenderer is not None:
+            return self._cachedRenderer
+        elif hasattr(self.canvas, 'get_renderer'):
+            return self.canvas.get_renderer()
+        else:
+            return _get_renderer(self)
+
     def _get_dpi(self):
         return self._dpi
 
@@ -2885,7 +2888,7 @@ def draw_without_rendering(self):
         Draw the figure with no output.  Useful to get the final size of
         artists that require a draw before their size is known (e.g. text).
         """
-        renderer = self._get_cached_renderer()
+        renderer = _get_renderer(self)
         with renderer._draw_disabled():
             self.draw(renderer)
 

lib/matplotlib/layout_engine.py

@@ -22,8 +22,6 @@
 from matplotlib._constrained_layout import do_constrained_layout
 from matplotlib._tight_layout import (get_subplotspec_list,
                                       get_tight_layout_figure)
-# from matplotlib.backend_bases import _get_renderer
-from matplotlib._tight_layout import get_renderer
 
 
 class LayoutEngine:

lib/matplotlib/offsetbox.py

@@ -1552,7 +1552,8 @@ def on_motion(self, evt):
             self.update_offset(dx, dy)
             if self._use_blit:
                 self.canvas.restore_region(self.background)
-                self.ref_artist.draw(self.ref_artist.figure._get_cached_renderer())
+                self.ref_artist.draw(
+                    self.ref_artist.figure._get_cached_renderer())
                 self.canvas.blit()
             else:
                 self.canvas.draw()
@@ -1567,7 +1568,8 @@ def on_pick(self, evt):
                 self.canvas.draw()
                 self.background = \
                     self.canvas.copy_from_bbox(self.ref_artist.figure.bbox)
-                self.ref_artist.draw(self.ref_artist.figure._get_cached_renderer())
+                self.ref_artist.draw(
+                    self.ref_artist.figure._get_cached_renderer())
                 self.canvas.blit()
             self._c1 = self.canvas.callbacks._connect_picklable(
                 "motion_notify_event", self.on_motion)

lib/matplotlib/widgets.py

@@ -1930,7 +1930,8 @@ def ignore(self, event):
 
     def update(self):
         """Draw using blit() or draw_idle(), depending on ``self.useblit``."""
-        if not self.ax.get_visible() or self.ax.figure._get_cached_renderer() is None:
+        if (not self.ax.get_visible() or
+                self.ax.figure._get_cached_renderer() is None):
             return False
         if self.useblit:
             if self.background is not None: