FIX: resizable was resizing in all directions (qt)

item.resizable should resize along the item's group non-layout direction, but in Qt it was resizing in all directions instead

traitsui/item.py

@@ -147,7 +147,7 @@ class Item ( ViewSubElement ):
     # Additional editor traits to be set if default traits editor to be used:
     editor_args = Dict
 
-    # Should the item use extra space along its Group's layout axis? If set to
+    # Should the item use extra space along its Group's non-layout axis? If set to
     # True, the widget expands to fill any extra space that is available in the
     # display. If set to True for more than one item in the same View, any extra
     # space is divided between them. If set to False, the widget uses only

traitsui/qt4/editor.py

@@ -371,18 +371,20 @@ def set_size_policy(self, direction, resizable, springy, stretch):
         policy = self.control.sizePolicy()
 
         if direction == QtGui.QBoxLayout.LeftToRight:
-            policy.setHorizontalStretch(stretch)
             if springy:
+                policy.setHorizontalStretch(stretch)
                 policy.setHorizontalPolicy(QtGui.QSizePolicy.Expanding)
-            if resizable :
+            if resizable:
+                policy.setVerticalStretch(stretch)
                 policy.setVerticalPolicy(QtGui.QSizePolicy.Expanding)
 
-        else:
-            policy.setVerticalStretch(stretch)
-            if resizable :
-                policy.setHorizontalPolicy(QtGui.QSizePolicy.Expanding)
-            if springy :
+        else: # TopToBottom
+            if springy:
+                policy.setVerticalStretch(stretch)
                 policy.setVerticalPolicy(QtGui.QSizePolicy.Expanding)
+            if resizable:
+                policy.setHorizontalStretch(stretch)
+                policy.setHorizontalPolicy(QtGui.QSizePolicy.Expanding)
 
         self.control.setSizePolicy(policy)