autosummary: respect py:currentclass when looking up Python objects

This makes autosummary directives inside classes to work properly.

sphinx/ext/autosummary/__init__.py

@@ -171,7 +171,7 @@ class Autosummary(Directive):
     """
     Pretty table containing short signatures and summaries of functions etc.
 
-    autosummary also generates a (hidden) toctree:: node.
+    autosummary can also optionally generate a hidden toctree:: node.
     """
 
     required_arguments = 0
@@ -232,10 +232,18 @@ class Autosummary(Directive):
         env = self.state.document.settings.env
 
         prefixes = ['']
+
         currmodule = env.temp_data.get('py:module')
         if currmodule:
             prefixes.insert(0, currmodule)
 
+        currclass = env.temp_data.get('py:class')
+        if currclass:
+            if currmodule:
+                prefixes.insert(0, currmodule + "." + currclass)
+            else:
+                prefixes.insert(0, currclass)
+
         items = []
 
         max_item_chars = 50

tests/root/autosummary.txt

@@ -5,3 +5,27 @@ Autosummary test
    :toctree: generated
 
    sphinx.application.TemplateBridge
+
+.. currentmodule:: sphinx.application
+
+.. autoclass:: TemplateBridge
+
+   Basic test
+
+   .. autosummary::
+
+      render                    -- some ignored stuff goes here
+      render_string             More ignored stuff
+
+   Test with tildes
+
+   .. autosummary::
+
+      ~TemplateBridge.render
+      ~TemplateBridge.render_string
+
+   Methods:
+
+  .. automethod:: render
+
+  .. automethod:: render_string