Don't set zoom/pan cursor for non-navigatable axes.

Zoom/pan cannot be used e.g. on colorbars, which are "non-navigatable".
So don't set the zoom/pan cursor when the mouse is over them, either.

Author: anntzer

lib/matplotlib/backend_bases.py

@@ -2976,7 +2976,7 @@ def _update_cursor(self, event):
         """
         Update the cursor after a mouse move event or a tool (de)activation.
         """
-        if self.mode and event.inaxes:
+        if self.mode and event.inaxes and event.inaxes.get_navigate():
             if (self.mode == _Mode.ZOOM
                     and self._lastCursor != cursors.SELECT_REGION):
                 self.set_cursor(cursors.SELECT_REGION)

lib/matplotlib/backend_tools.py

@@ -262,7 +262,8 @@ def _add_tool_cbk(self, event):
     def _set_cursor_cbk(self, event):
         if not event:
             return
-        if self._current_tool and getattr(event, "inaxes", None):
+        if (self._current_tool and getattr(event, "inaxes", None)
+                and event.inaxes.get_navigate()):
             if self._last_cursor != self._current_tool.cursor:
                 self.set_cursor(self._current_tool.cursor)
                 self._last_cursor = self._current_tool.cursor