Move mouse move handling to ConsoleWidget.eventFilter

Bradly Froehle pointed out my original implementation broke selecting
text and suggested moving the link tooltip handling to eventFilter.

The current version doesn't report that it handled the mouse move
message, I think this may be better as in addition to showing
the tool tip you can still select text inside the linkable object.

(Its always been a problem to select some chunk of link text in
gnome-terminal as their link handling overrides the other mouse
selecting functionality)

IPython/frontend/qt/console/console_widget.py

@@ -434,6 +434,16 b' class ConsoleWidget(LoggingConfigurable, QtGui.QWidget):'
                 obj == self._page_control:
             self._page_control.repaint()
             return True
+
+        elif etype == QtCore.QEvent.MouseMove:
+            anchor = self._control.anchorAt(event.pos())
+            if len(anchor) == 0:
+                self._anchor = None
+                QtGui.QToolTip.hideText()
+            elif anchor != self._anchor:
+                self._anchor = anchor
+                QtGui.QToolTip.showText(event.globalPos(), self._anchor)
+
         return super(ConsoleWidget, self).eventFilter(obj, event)
 
     #---------------------------------------------------------------------------
@@ -1031,7 +1041,6 b' class ConsoleWidget(LoggingConfigurable, QtGui.QWidget):'
             control = QtGui.QTextEdit()
             control.setAcceptRichText(False)
             control.setMouseTracking(True)
-            control.mouseMoveEvent = self.mouseMoveEvent
 
         # Install event filters. The filter on the viewport is needed for
         # mouse events and drag events.
@@ -1736,18 +1745,6 b' class ConsoleWidget(LoggingConfigurable, QtGui.QWidget):'
         else:
             self.input_buffer = ''
 
-    def mouseMoveEvent(self, event):
-        """ Show tooltip if the mouse is hovering over an anchor
-        """
-        pos = event.pos()
-        anchor = self._control.anchorAt(pos)
-        if len(anchor) == 0:
-            self._anchor = None
-            QtGui.QToolTip.hideText()
-        elif anchor != self._anchor:
-            self._anchor = anchor
-            QtGui.QToolTip.showText(pos, self._anchor)
-
     def _page(self, text, html=False):
         """ Displays text using the pager if it exceeds the height of the
         viewport.