Call tips are now positioned more intelligently: if a call tip below the current line would be outside the screen, it is positioned above the line instead.

IPython/frontend/qt/console/call_tip_widget.py

@@ -98,6 +98,7 b' class CallTipWidget(QtGui.QLabel):'
     def show_tip(self, tip):
         """ Attempts to show the specified tip at the current cursor location.
         """
+        # Attempt to find the cursor position at which to show the call tip.
         text_edit = self.parent()
         document = text_edit.document()
         cursor = text_edit.textCursor()
@@ -106,12 +107,22 b' class CallTipWidget(QtGui.QLabel):'
                                                          forward=False)
         if self._start_position == -1:
             return False
-    
-        point = text_edit.cursorRect(cursor).bottomRight()
-        point = text_edit.mapToGlobal(point)
-        self.move(point)
+
+        # Set the text and resize the widget accordingly.
         self.setText(tip)
         self.resize(self.sizeHint())
+    
+        # Locate and show the widget. Place the tip below the current line
+        # unless it would be off the screen. In that case, place it above
+        # the current line.
+        cursor_rect = text_edit.cursorRect(cursor)
+        screen_rect = QtGui.qApp.desktop().screenGeometry(text_edit)
+        point = text_edit.mapToGlobal(cursor_rect.bottomRight())
+        tip_height = self.size().height()
+        if point.y() + tip_height > screen_rect.height():
+            point = text_edit.mapToGlobal(cursor_rect.topRight())
+            point.setY(point.y() - tip_height)
+        self.move(point)
         self.show()
         return True